Added strong collision

week5/helper-files/break.sh

 a=""
 b="efbc"
+iter=0
+a=$(openssl dgst -md5 doc2.txt | awk '{print $2}' | cut -c1-4)
 until [ "$a" == "$b" ];do
-    sed -i 's\$\ \' doc2.txt
+    iter=$(($iter+1))
+    sed -i 's\$\ \' doc1.txt
     a=$(openssl dgst -md5 doc2.txt | awk '{print $2}' | cut -c1-4)
-done
\ No newline at end of file
+done
+echo $iter
\ No newline at end of file

week5/helper-files/break_strong.sh

+hash=""
+origHash=()
+iter=1
+until [ "$iter" == 10 ];do
+    filename="doc1"$(($iter+1))".txt"
+    inputfile="doc1"$iter".txt"
+    sed 's/\(.\)/\0 /g' "$inputfile" >  "$filename"
+    hash=$(openssl dgst -md5 "$filename" | awk '{print $2}' | cut -c1-4)
+    origHash+=($hash)
+    iter=$(($iter+1))
+done
+echo "${origHash[*]}"
+# a=$(openssl dgst -md5 doc2.txt | awk '{print $2}' | cut -c1-4)
+containsElement () {
+  local e match="$1"
+  shift
+  for e; do [[ "$e" == "$match" ]] && return 0; done
+  return 1
+}
+iter=0
+val=1
+until [ "$val" == 0 ];do
+    iter=$(($iter+1))
+    sed -i 's\$\ \' doc1.txt
+    hash=$(openssl dgst -md5 doc2.txt | awk '{print $2}' | cut -c1-4)
+    containsElement "$hash" "${origHash[@]}"
+    val=$?
+done
+echo $iter

week5/helper-files/doc11.txt

+Office Order
+
+Permission granted to Agent Z for procument of 100 desktop computers for the organization.
+
+- Gabbar

week5/helper-files/doc110.txt

+O                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               f                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               f                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               i                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               c                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               e                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               O                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               r                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               d                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               e                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               r                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
+
+P                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               e                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               r                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               m                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               i                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               s                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               s                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               i                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               o                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               g                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               r                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               a                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               t                                                                                                                                                                                                                                                                                                                                      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                                                                                                                                                                                                                                       o                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               A                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               g                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               e                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               t                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               Z                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               f                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               o                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               r                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               p                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               r                                                                                                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                                                                                                                                                                                                                                                                                                                                                                                                                                                      u                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               m                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               e                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               t                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               o                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               f                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               d                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               e                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               s                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               k                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               t                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               o                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               p                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            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                                                                                                                                                                                                          m                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               p                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               u                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               t                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               e                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               r                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               s                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               f                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               o                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               r                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               t                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               h                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               e                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               o                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               r                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               g                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               a                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               i                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               z                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               a                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               t                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               i                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               o                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               .                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
+
+-                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               G                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               a                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               b                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               b                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               a                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               r                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

week5/helper-files/doc12.txt

+O f f i c e   O r d e r 
+
+P e r m i s s i o n   g r a n t e d   t o   A g e n t   Z   f o r   p r o c u m e n t   o f   1 0 0   d e s k t o p   c o m p u t e r s   f o r   t h e   o r g a n i z a t i o n . 
+
+-   G a b b a r 

week5/helper-files/doc13.txt

+O   f   f   i   c   e       O   r   d   e   r   
+
+P   e   r   m   i   s   s   i   o   n       g   r   a   n   t   e   d       t   o       A   g   e   n   t       Z       f   o   r       p   r   o   c   u   m   e   n   t       o   f       1   0   0       d   e   s   k   t   o   p       c   o   m   p   u   t   e   r   s       f   o   r       t   h   e       o   r   g   a   n   i   z   a   t   i   o   n   .   
+
+-       G   a   b   b   a   r   

week5/helper-files/doc14.txt

+O       f       f       i       c       e               O       r       d       e       r       
+
+P       e       r       m       i       s       s       i       o       n               g       r       a       n       t       e       d               t       o               A       g       e       n       t               Z               f       o       r               p       r       o       c       u       m       e       n       t               o       f               1       0       0               d       e       s       k       t       o       p               c       o       m       p       u       t       e       r       s               f       o       r               t       h       e               o       r       g       a       n       i       z       a       t       i       o       n       .       
+
+-               G       a       b       b       a       r       

week5/helper-files/doc15.txt

+O               f               f               i               c               e                               O               r               d               e               r               
+
+P               e               r               m               i               s               s               i               o               n                               g               r               a               n               t               e               d                               t               o                               A               g               e               n               t                               Z                               f               o               r                               p               r               o               c               u               m               e               n               t                               o               f                               1               0               0                               d               e               s               k               t               o               p                               c               o               m               p               u               t               e               r               s                               f               o               r                               t               h               e                               o               r               g               a               n               i               z               a               t               i               o               n               .               
+
+-                               G               a               b               b               a               r               

week5/helper-files/doc16.txt

+O                               f                               f                               i                               c                               e                                                               O                               r                               d                               e                               r                               
+
+P                               e                               r                               m                               i                               s                               s                               i                               o                               n                                                               g                               r                               a                               n                               t                               e                               d                                                               t                               o                                                               A                               g                               e                               n                               t                                                               Z                                                               f                               o                               r                                                               p                               r                               o                               c                               u                               m                               e                               n                               t                                                               o                               f                                                               1                               0                               0                                                               d                               e                               s                               k                               t                               o                               p                                                               c                               o                               m                               p                               u                               t                               e                               r                               s                                                               f                               o                               r                                                               t                               h                               e                                                               o                               r                               g                               a                               n                               i                               z                               a                               t                               i                               o                               n                               .                               
+
+-                                                               G                               a                               b                               b                               a                               r                               

week5/helper-files/doc17.txt

+O                                                               f                                                               f                                                               i                                                               c                                                               e                                                                                                                               O                                                               r                                                               d                                                               e                                                               r                                                               
+
+P                                                               e                                                               r                                                               m                                                               i                                                               s                                                               s                                                               i                                                               o                                                               n                                                                                                                               g                                                               r                                                               a                                                               n                                                               t                                                               e                                                               d                                                                                                                               t                                                               o                                                                                                                               A                                                               g                                                               e                                                               n                                                               t                                                                                                                               Z                                                                                                                               f                                                               o                                                               r                                                                                                                               p                                                               r                                                               o                                                               c                                                               u                                                               m                                                               e                                                               n                                                               t                                                                                                                               o                                                               f                                                                                                                               1                                                               0                                                               0                                                                                                                               d                                                               e                                                               s                                                               k                                                               t                                                               o                                                               p                                                                                                                               c                                                               o                                                               m                                                               p                                                               u                                                               t                                                               e                                                               r                                                               s                                                                                                                               f                                                               o                                                               r                                                                                                                               t                                                               h                                                               e                                                                                                                               o                                                               r                                                               g                                                               a                                                               n                                                               i                                                               z                                                               a                                                               t                                                               i                                                               o                                                               n                                                               .                                                               
+
+-                                                                                                                               G                                                               a                                                               b                                                               b                                                               a                                                               r                                                               

week5/helper-files/doc18.txt

+O                                                                                                                               f                                                                                                                               f                                                                                                                               i                                                                                                                               c                                                                                                                               e                                                                                                                                                                                                                                                               O                                                                                                                               r                                                                                                                               d                                                                                                                               e                                                                                                                               r                                                                                                                               
+
+P                                                                                                                               e                                                                                                                               r                                                                                                                               m                                                                                                                               i                                                                                                                               s                                                                                                                               s                                                                                                                               i                                                                                                                               o                                                                                                                               n                                                                                                                                                                                                                                                               g                                                                                                                               r                                                                                                                               a                                                                                                                               n                                                                                                                               t                                                                                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                                                                      e                                                                                                                               n                                                                                                                               t                                                                                                                                                                                                                                                               Z                                                                                                                                                                                                                                                               f                                                                                                                               o                                                                                                                               r                                                                                                                                                                                                                                                               p                                                                                                                               r                                                                                                                               o                                                                                                                               c                                                                                                                               u                                                                                                                               m                                                                                                                               e                                                                                                                               n                                                                                                                               t                                                                                                                                                                                                                                                               o                                                                                                                               f                                                                                                                                                                                                                                                    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                                                                                                                              o                                                                                                                               n                                                                                                                               .                                                                                                                               
+
+-                                                                                                                                                                                                                                                               G                                                                                                                               a                                                                                                                               b                                                                                                                               b                                                                                                                               a                                                                                                                               r                                                                                                                               

week5/helper-files/doc19.txt

+O                                                                                                                                                                                                                                                               f                                                                                                                                                                                                                                                               f                                                                                                                                                                                                                                                               i                                                                                                                                                                                                                                                               c                                                                                                                                                                                                                                                               e                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               O                                                                                                                                                                                                                                                               r                                                                                                                                                                                                                                                               d                                                                                                                                                                                                                                                               e                                                                                                                                                                                                                                                               r                                                                                                                                                                                                                                                               
+
+P                                                                                                                                                                                                                                                               e                                                                                                                                                                                                                                                               r                                                                                                                                                                                                                                                               m                                                                                                                                                                                                                                                               i                                                                                                                                                                                                                                                               s                                                                                                                                                                                                                                                               s                                                                                                                                                                                                                                                               i                                                                                                                                                                                                                                                               o                                                                                                                                                                                                                                                               n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               g                                                                                                                                                                                                                                                               r                                                                                                                                                                                                                                                               a                                                                                                                                                                                                                                                               n                                                                                                                                                                                                                                                               t                                                                                                                                                                                                                                                               e                                                                                                                                                                                                                                                               d                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               t                                                                                                                                                                                                                                                               o                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               A                                                                                                                                                                                                                                                               g                                                                                                                                                                                                                                                               e                                                                                                                                                                                                                                                               n                                                                                                                                                                                                                                                               t                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               Z                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               f                                                                                                                                                                                                                                                               o                                                                                                                                                                                                                                                               r                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               p                                                                                                                                                                                                                                                               r                                               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                                                                                                                                                                                                                                                              o                                                                                                                                                                                                                                                               f                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               1                                                                                                                                                                                                                                                               0                                                                                                                                                                                                                                                               0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               d                                                                                                                                                                                                                                                               e                                                                                                                                                                                                                                                               s                                                                                                                                                                                                                                                               k                                                                                                                                                                                                                                                               t                                                                                                                                                                                                                                                               o                                                                                                                                                                                                                                                               p                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               c                                                                                                                                                                                                                                                               o                                                                                                                                                                                                                                                               m                                                                                                                                                                                                                                                               p                                                                                                                                                                                                                                                               u                                                                                                                                                                                                                                                               t                                                                                                                                                                                                                                                               e                                                                                                                                                                                                                                                               r                                                                                                                       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                                                                                                                                                                                      e                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               o                                                                                                                                                                                                                                                               r                                                                                                                                                                                                                                                               g                                                                                                                                                                                                                                                               a                                                                                                                                                                                                                                                               n                                                                                                                                                                                                                                                               i                           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                                                                                                                                                                                                                                                           o                                                                                                                                                                                                                                                               n                                                                                                                                                                                                                                                               .                                                                                                                                                                                                                                                               
+
+-                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               G                                                                                                                                                                                                                                                               a                                                                                                                                                                                                                                                               b                                                                                                                                                                                                                                                               b                                                                                                                                                                                                                                                               a                                                                                                                                                                                                                                                               r