Commit 24c5e226 authored by SHIVAM SOOD's avatar SHIVAM SOOD

Complete

parent f8fc9ca1
// gcc program1.c -o program1 -lssl
#include <stdio.h>
#include <string.h>
#include <openssl/md5.h>
int main()
{
unsigned char digest[MD5_DIGEST_LENGTH];
char string[] = "happy";
MD5((unsigned char*)&string, strlen(string), (unsigned char*)&digest);
char mdString[33];
for(int i = 0; i < 16; i++)
sprintf(&mdString[i*2], "%02x", (unsigned int)digest[i]);
printf("md5 digest: %s\n", mdString);
return 0;
}
\ No newline at end of file
Office Order
Permission granted to Agent Z for procument of 100 desktop computers for the organization.
- Gabbar
hello how are you whats up dude Z to enter high security area
import sys
import hashlib as hashl
f1 = open("doc1.txt", "r+", encoding = 'utf-8')
f2 = open("doc2.txt", "r+", encoding = 'utf-8')
L = str(f1.read())
M = str(f2.read())
Listofhashes = []
for i in range(10):
#hd1 = hashl.md5(L)
hd1 = hashl.md5(L.encode('utf-8'))
s = str(hd1.hexdigest())[:2]
Listofhashes.append(s)
L = L + " "
d = 0
print(Listofhashes)
while True:
d+=1
hd2 = hashl.md5(M.encode('utf-8'))
z= str( hd2.hexdigest())[:2]
print(z)
if z in Listofhashes:
print(d)
break
M = M + " "
\ No newline at end of file
import sys
import hashlib as hashl
f1 = open("doc1.txt", "r+", encoding = 'utf-8')
f2 = open("doc2.txt", "r+", encoding = 'utf-8')
L = str(f1.read())
M = str(f2.read())
hd1 = hashl.md5(L.encode('utf-8'))
hd2 = hashl.md5(M.encode('utf-8'))
d = 0
test =str(hd1.hexdigest())[:2]
print(test)
while True:
L = L + " "
hd2 = hashl.md5(L.encode('utf-8'))
d+=1
Y = str(hd2.hexdigest())[:2]
if Y == test:
print(d)
break
Prac 1 - freq analysis
sed 's/old/new/g' file_name > outfile
sed -i 's/old/new/g' file_name //For updating in new file
Prac 2- vigenere
prac3- openssl
AES encrytpion
openssl enc -aes-128-cbc -e -in plain.txt -out cipher.bin -K 00112233445566778889aabbccddeeff -iv 0102030405060708;
Open Encrypted image file:
head -c 54 plain.bmp > header" ; "tail -c +55 cipher.bmp > body" ; "cat header body > new.bmp"
AES Decryption
openssl aes-128-cbc -d -in cipher.bin -out plain.txt -K 00112233445566778889aabbccddeeff -iv 0102030405060708;
DES encryption
openssl enc -des-ecb -K e0e0e0e0f1f1f1f1 -in mesg.plain -out mesg.enc
DES encryption
openssl des-ecb -d -K e0e0e0e0f1f1f1f1 -in mesg.plain -out mesg.enc
prac4-
enc - symmetric cipher routines
SYNOPSIS
openssl enc -ciphername [-in filename] [-out filename] [-pass arg] [-e]
[-d] [-a/-base64] [-A] [-k password] [-kfile filename] [-K key] [-iv
IV] [-S salt] [-salt] [-nosalt] [-z] [-md] [-p] [-P] [-bufsize number]
[-nopad] [-debug] [-none] [-engine id]
aes-[128|192|256]-cbc 128/192/256 bit AES in CBC mode
aes-[128|192|256] Alias for aes-[128|192|256]-cbc
aes-[128|192|256]-cfb 128/192/256 bit AES in 128 bit CFB mode
aes-[128|192|256]-cfb1 128/192/256 bit AES in 1 bit CFB mode
aes-[128|192|256]-cfb8 128/192/256 bit AES in 8 bit CFB mode
aes-[128|192|256]-ecb 128/192/256 bit AES in ECB mode
aes-[128|192|256]-ofb 128/192/256 bit AES in OFB mode
OPTIONS
-in filename
the input filename, standard input by default.
-out filename
the output filename, standard output by default.
-salt
use a salt in the key derivation routines. This is the default.
-nosalt
don't use a salt in the key derivation routines. This option SHOULD
NOT be used except for test purposes or compatibility with ancient
versions of OpenSSL and SSLeay.
-e encrypt the input data: this is the default.
-d decrypt the input data.
-base64
same as -a
-A if the -a option is set then base64 process the data on one line.
-k password
the password to derive the key from. This is for compatibility with
previous versions of OpenSSL. Superseded by the -pass argument.
-K key
the actual key to use: this must be represented as a string
comprised only of hex digits. If only the key is specified, the IV
must additionally specified using the -iv option. When both a key
and a password are specified, the key given with the -K option will
be used and the IV generated from the password will be taken. It
probably does not make much sense to specify both key and password.
-iv IV
the actual IV to use: this must be represented as a string
comprised only of hex digits. When only the key is specified using
the -K option, the IV must explicitly be defined. When a password
is being specified using one of the other options, the IV is
generated from this password.
-p print out the key and IV used.
-P print out the key and IV used then immediately exit: don't do any
encryption or decryption.
-bufsize number
set the buffer size for I/O
-nopad
disable standard block padding
-debug
debug the BIOs used for I/O.
-z Compress or decompress clear text using zlib before encryption or
after decryption. This option exists only if OpenSSL with compiled
with zlib or zlib-dynamic option.
-none
Use NULL cipher (no encryption or decryption of input).
-a base64 process the data. This means that if encryption is taking
place the data is base64 encoded after encryption. If decryption is
set then the input data is base64 decoded before being decrypted.
NOTES
The program can be called either as openssl ciphername or openssl enc
-ciphername. But the first form doesn't work with engine-provided
ciphers, because this form is processed before the configuration file
is read and any ENGINEs loaded.
Engines which provide entirely new encryption algorithms (such as
ccgost engine which provides gost89 algorithm) should be configured in
the configuration file. Engines, specified in the command line using
-engine options can only be used for hadrware-assisted implementations
of ciphers, which are supported by OpenSSL core or other engine,
specified in the configuration file.
When enc command lists supported ciphers, ciphers provided by engines,
specified in the configuration files are listed too.
A password will be prompted for to derive the key and IV if necessary.
The -salt option should ALWAYS be used if the key is being derived from
a password unless you want compatibility with previous versions of
OpenSSL and SSLeay.
Without the -salt option it is possible to perform efficient dictionary
attacks on the password and to attack stream cipher encrypted data. The
reason for this is that without the salt the same password always
generates the same encryption key. When the salt is being used the
first eight bytes of the encrypted data are reserved for the salt: it
is generated at random when encrypting a file and read from the
encrypted file when it is decrypted.
Some of the ciphers do not have large keys and others have security
implications if not used correctly. A beginner is advised to just use a
strong block cipher in CBC mode such as bf or des3.
All the block ciphers normally use PKCS#5 padding also known as
standard block padding: this allows a rudimentary integrity or password
check to be performed. However since the chance of random data passing
the test is better than 1 in 256 it isn't a very good test.
If padding is disabled then the input data must be a multiple of the
cipher block length.
All RC2 ciphers have the same key and effective key length.
Blowfish and RC5 algorithms use a 128 bit key.
SUPPORTED CIPHERS
Note that some of these ciphers can be disabled at compile time and
some are available only if an appropriate engine is configured in the
configuration file. The output of the enc command run with unsupported
options (for example openssl enc -help) includes a list of ciphers,
supported by your versesion of OpenSSL, including ones provided by
configured engines.
The enc program does not support authenticated encryption modes like
CCM and GCM. The utility does not store or retrieve the authentication
tag.
base64 Base 64
bf-cbc Blowfish in CBC mode
bf Alias for bf-cbc
bf-cfb Blowfish in CFB mode
bf-ecb Blowfish in ECB mode
bf-ofb Blowfish in OFB mode
cast-cbc CAST in CBC mode
cast Alias for cast-cbc
cast5-cbc CAST5 in CBC mode
cast5-cfb CAST5 in CFB mode
cast5-ecb CAST5 in ECB mode
cast5-ofb CAST5 in OFB mode
des-cbc DES in CBC mode
des Alias for des-cbc
des-cfb DES in CBC mode
des-ofb DES in OFB mode
des-ecb DES in ECB mode
des-ede-cbc Two key triple DES EDE in CBC mode
des-ede Two key triple DES EDE in ECB mode
des-ede-cfb Two key triple DES EDE in CFB mode
des-ede-ofb Two key triple DES EDE in OFB mode
des-ede3-cbc Three key triple DES EDE in CBC mode
des-ede3 Three key triple DES EDE in ECB mode
des3 Alias for des-ede3-cbc
des-ede3-cfb Three key triple DES EDE CFB mode
des-ede3-ofb Three key triple DES EDE in OFB mode
desx DESX algorithm.
gost89 GOST 28147-89 in CFB mode (provided by ccgost engine)
gost89-cnt `GOST 28147-89 in CNT mode (provided by ccgost engine)
idea-cbc IDEA algorithm in CBC mode
idea same as idea-cbc
idea-cfb IDEA in CFB mode
idea-ecb IDEA in ECB mode
idea-ofb IDEA in OFB mode
rc2-cbc 128 bit RC2 in CBC mode
rc2 Alias for rc2-cbc
rc2-cfb 128 bit RC2 in CFB mode
rc2-ecb 128 bit RC2 in ECB mode
rc2-ofb 128 bit RC2 in OFB mode
rc2-64-cbc 64 bit RC2 in CBC mode
rc2-40-cbc 40 bit RC2 in CBC mode
rc4 128 bit RC4
rc4-64 64 bit RC4
rc4-40 40 bit RC4
rc5-cbc RC5 cipher in CBC mode
rc5 Alias for rc5-cbc
rc5-cfb RC5 cipher in CFB mode
rc5-ecb RC5 cipher in ECB mode
rc5-ofb RC5 cipher in OFB mode
EXAMPLES
Just base64 encode a binary file:
openssl base64 -in file.bin -out file.b64
Decode the same file
openssl base64 -d -in file.b64 -out file.bin
Encrypt a file using triple DES in CBC mode using a prompted password:
openssl des3 -salt -in file.txt -out file.des3
Decrypt a file using a supplied password:
openssl des3 -d -salt -in file.des3 -out file.txt -k mypassword
Encrypt a file then base64 encode it (so it can be sent via mail for
example) using Blowfish in CBC mode:
openssl bf -a -salt -in file.txt -out file.bf
Base64 decode a file then decrypt it:
openssl bf -d -salt -a -in file.bf -out file.txt
Decrypt some data using a supplied 40 bit RC4 key:
openssl rc4-40 -in file.rc4 -out file.txt -K 0102030405
BUGS
The -A option when used with large files doesn't work properly.
There should be an option to allow an iteration count to be included.
The enc program only supports a fixed number of algorithms with certain
parameters. So if, for example, you want to use RC2 with a 76 bit key
or RC4 with an 84 bit key you can't use this program.
1.0.2g 2016-03-01 ENC(1SSL)
import sys
dict_char = {}
with open(sys.argv[1], 'r') as f:
for line in f:
for c in line:
if c not in dict_char.keys():
dict_char[c] = 1
else:
dict_char[c] += 1
l = sorted( dict_char.items(), key = lambda key_val : (key_val[1], key_val[0]) , reverse=True)
for items in l:
print(str(items[0]) + ' '+str(items[1]))
#print(dict_char)
Office Order
Permission granted to Agent Z for procument of 100 desktop computers for the organization.
- Gabbar
hello how are you whats up dude Z to enter high security area
import sys
import hashlib as hashl
f1 = open("doc1.txt", "r+", encoding = 'utf-8')
f2 = open("doc2.txt", "r+", encoding = 'utf-8')
L = str(f1.read())
M = str(f2.read())
Listofhashes = []
for i in range(10):
#hd1 = hashl.md5(L)
hd1 = hashl.md5(L.encode('utf-8'))
s = str(hd1.hexdigest())[:2]
Listofhashes.append(s)
L = L + " "
d = 0
print(Listofhashes)
while True:
d+=1
hd2 = hashl.md5(M.encode('utf-8'))
z= str( hd2.hexdigest())[:2]
print(z)
if z in Listofhashes:
print(d)
break
M = M + " "
\ No newline at end of file
import sys
import hashlib as hashl
f1 = open("doc1.txt", "r+", encoding = 'utf-8')
f2 = open("doc2.txt", "r+", encoding = 'utf-8')
L = str(f1.read())
M = str(f2.read())
hd1 = hashl.md5(L.encode('utf-8'))
hd2 = hashl.md5(M.encode('utf-8'))
d = 0
test =str(hd1.hexdigest())[:2]
print(test)
while True:
L = L + " "
hd2 = hashl.md5(L.encode('utf-8'))
d+=1
Y = str(hd2.hexdigest())[:2]
if Y == test:
print(d)
break
openssl command [ command_opts ] [ command_args ]
openssl [ list-standard-commands | list-message-digest-commands | list-
cipher-commands | list-cipher-algorithms | list-message-digest-
algorithms | list-public-key-algorithms]
openssl no-XXX [ arbitrary options ]
dgst Message Digest Calculation.
dhparam Generation and Management of Diffie-Hellman Parameters.
Superseded by genpkey and pkeyparam
genpkey Generation of Private Key or Parameters.
passwd Generation of hashed passwords.
rand Generate pseudo-random bytes.
x509 X.509 Certificate Data Management.
MESSAGE DIGEST COMMANDS
md2 MD2 Digest
md5 MD5 Digest
mdc2 MDC2 Digest
rmd160 RMD-160 Digest
sha SHA Digest
sha1 SHA-1 Digest
sha224 SHA-224 Digest
sha256 SHA-256 Digest
sha384 SHA-384 Digest
sha512 SHA-512 Digest
ENCODING AND CIPHER COMMANDS
base64 Base64 Encoding
bf bf-cbc bf-cfb bf-ecb bf-ofb
Blowfish Cipher
cast cast-cbc
CAST Cipher
cast5-cbc cast5-cfb cast5-ecb cast5-ofb
CAST5 Cipher
des des-cbc des-cfb des-ecb des-ede des-ede-cbc des-ede-cfb des-ede-ofb
des-ofb
DES Cipher
des3 desx des-ede3 des-ede3-cbc des-ede3-cfb des-ede3-ofb
Triple-DES Cipher
idea idea-cbc idea-cfb idea-ecb idea-ofb
IDEA Cipher
rc2 rc2-cbc rc2-cfb rc2-ecb rc2-ofb
RC2 Cipher
rc4 RC4 Cipher
rc5 rc5-cbc rc5-cfb rc5-ecb rc5-ofb
RC5 Cipher
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