Hashing functions from Marko Kreen <marko@l-t.ee>

contrib/Makefile

-# $Header: /cvsroot/pgsql/contrib/Makefile,v 1.8 2000/09/18 20:11:34 petere Exp $
+# $Header: /cvsroot/pgsql/contrib/Makefile,v 1.9 2000/10/31 13:11:28 petere Exp $
 
 subdir = contrib
 top_builddir = ..
@@ -17,6 +17,7 @@ WANTED_DIRS =	array		\
 		noupdate	\
 		pg_dumplo	\
 		pgbench		\
+		pgcrypto	\
 		soundex		\
 		spi		\
 		string		\

contrib/pgcrypto/Makefile

+#
+# $Header: /cvsroot/pgsql/contrib/pgcrypto/Makefile,v 1.1 2000/10/31 13:11:28 petere Exp $
+#
+
+subdir = contrib/pgcrypto
+top_builddir = ../..
+include $(top_builddir)/src/Makefile.global
+
+# either 'builtin', 'mhash', 'openssl', 'krb5'
+cryptolib = builtin
+
+##########################
+
+ifeq ($(cryptolib), builtin)
+SRCS= md5.c sha1.c internal.c
+endif
+
+ifeq ($(cryptolib), openssl)
+cryptoinc := -I/usr/include/openssl
+cryptolib := -lcrypto
+SRCS = openssl.c
+endif
+
+ifeq ($(cryptolib), mhash)
+cryptoinc=
+cryptolib=-lmhash
+SRCS=mhash.c
+endif
+
+ifeq ($(cryptolib), krb5)
+cryptoinc=-I/usr/include
+cryptolib=-ldes
+SRCS=krb.c
+endif
+
+NAME	:= pgcrypto
+SRCS	+= pgcrypto.c
+OBJS	:= $(SRCS:.c=.o)
+SO_MAJOR_VERSION = 0
+SO_MINOR_VERSION = 1
+
+override CPPFLAGS	+= -I$(srcdir) $(cryptoinc)
+
+all: all-lib $(NAME).sql
+
+include $(top_srcdir)/src/Makefile.shlib
+
+$(NAME).sql: $(NAME).sql.in
+	sed 's,@MODULE_FILENAME@,$(libdir)/contrib/pgcrypto$(DLSUFFIX),g' $< >$@
+
+install: all installdirs
+	$(INSTALL_SHLIB) $(shlib)	$(DESTDIR)$(libdir)/contrib/pgcrypto$(DLSUFFIX)
+	$(INSTALL_DATA) $(NAME).sql	$(DESTDIR)$(datadir)/contrib/$(NAME).sql
+	$(INSTALL_DATA) README.$(NAME)	$(DESTDIR)$(docdir)/contrib/README.$(NAME)
+
+installdirs:
+	$(mkinstalldirs) $(libdir)/contrib $(datadir)/contrib $(docdir)/contrib
+
+uninstall: uninstall-lib
+	rm -f $(DESTDIR)$(libdir)/contrib/pgcrypto$(DLSUFFIX) $(datadir)/contrib/$(NAME).sql $(docdir)/contrib/README.$(NAME)
+
+clean distclean maintainer-clean: clean-lib
+	rm -f $(OBJS) $(NAME).sql

contrib/pgcrypto/README.pgcrypto

+
+DESCRIPTION
+
+  Here is a implementation of crypto hashes for PostgreSQL.
+  It exports 2 functions to SQL level:
+
+    digest(data::text, hash_name::text)
+	which returns hexadecimal coded hash over data by
+	specified algorithm. eg
+
+	> select digest('blah', 'sha1');
+	5bf1fd927dfb8679496a2e6cf00cbe50c1c87145
+
+    digest_exists(hash_name::text)::bool
+	which reports if particular hash type exists.
+
+  If any of arguments are NULL they return NULL.
+
+HASHES
+
+  For choosing library you must edit Makefile.
+
+  standalone (default):
+	MD5, SHA1
+
+	(the code is from KAME project.  Actually I hate code
+	duplication, but I also want to quarantee that MD5 and
+	SHA1 exist)
+
+  mhash (0.8.1):
+	MD5, SHA1, CRC32, CRC32B, GOST, TIGER, RIPEMD160,
+	HAVAL(256,224,192,160,128)
+
+  openssl:
+	MD5, SHA1, RIPEMD160, MD2
+
+  kerberos5 (heimdal):
+	MD5, SHA1
+
+

contrib/pgcrypto/internal.c

+/*
+ * internal.c
+ *		Wrapper for builtin functions
+ * 
+ * Copyright (c) 2000 Marko Kreen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: internal.c,v 1.1 2000/10/31 13:11:28 petere Exp $
+ */
+
+#include <postgres.h>
+
+#include "pgcrypto.h"
+
+#include "md5.h"
+#include "sha1.h"
+
+#ifndef MD5_DIGEST_LENGTH
+#define MD5_DIGEST_LENGTH 16
+#endif
+
+#ifndef SHA1_DIGEST_LENGTH
+#ifdef SHA1_RESULTLEN
+#define SHA1_DIGEST_LENGTH SHA1_RESULTLEN
+#else
+#define SHA1_DIGEST_LENGTH 20
+#endif
+#endif
+
+static uint
+pg_md5_len(pg_digest *h);
+static uint8 *
+pg_md5_digest(pg_digest *h, uint8 *src, uint len, uint8 *buf);
+
+static uint
+pg_sha1_len(pg_digest *h);
+static uint8 *
+pg_sha1_digest(pg_digest *h, uint8 *src, uint len, uint8 *buf);
+
+static pg_digest
+int_digest_list [] = {
+	{ "md5", pg_md5_len, pg_md5_digest, {0}},
+	{ "sha1", pg_sha1_len, pg_sha1_digest, {0}},
+	{ NULL, NULL, NULL, {0}}
+};
+
+static uint
+pg_md5_len(pg_digest *h) {
+	return MD5_DIGEST_LENGTH;
+}
+
+static uint8 *
+pg_md5_digest(pg_digest *h, uint8 *src, uint len, uint8 *buf)
+{
+	MD5_CTX ctx;
+
+	MD5Init(&ctx);
+	MD5Update(&ctx, src, len);
+	MD5Final(buf, &ctx);
+
+	return buf;
+}
+
+static uint
+pg_sha1_len(pg_digest *h) {
+	return SHA1_DIGEST_LENGTH;
+}
+
+static uint8 *
+pg_sha1_digest(pg_digest *h, uint8 *src, uint len, uint8 *buf)
+{
+	SHA1_CTX ctx;
+
+	SHA1Init(&ctx);
+	SHA1Update(&ctx, src, len);
+	SHA1Final(buf, &ctx);
+	
+	return buf;
+}
+
+
+pg_digest *
+pg_find_digest(pg_digest *h, char *name)
+{
+	pg_digest *p;
+
+	for (p = int_digest_list; p->name; p++)
+		if (!strcasecmp(p->name, name))
+			return p;
+	return NULL;
+}
+
+

contrib/pgcrypto/krb.c

+/*
+ * krb.c
+ *		Wrapper for Kerberos5 libdes SHA1/MD5.
+ * 
+ * Copyright (c) 2000 Marko Kreen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * 
+ * NOTES
+ *	It is possible that this works with other SHA1/MD5
+ *	implementations too.
+ *
+ * $Id: krb.c,v 1.1 2000/10/31 13:11:28 petere Exp $
+ */
+
+#include <postgres.h>
+
+#include "pgcrypto.h"
+
+#include <md5.h>
+#include <sha.h>
+
+#ifndef MD5_DIGEST_LENGTH
+#define MD5_DIGEST_LENGTH 16
+#endif
+
+#ifndef SHA1_DIGEST_LENGTH
+#ifdef SHA1_RESULTLEN
+#define SHA1_DIGEST_LENGTH SHA1_RESULTLEN
+#else
+#define SHA1_DIGEST_LENGTH 20
+#endif
+#endif
+
+static uint
+pg_md5_len(pg_digest *h);
+static uint8 *
+pg_md5_digest(pg_digest *h, uint8 *src, uint len, uint8 *buf);
+
+static uint
+pg_sha1_len(pg_digest *h);
+static uint8 *
+pg_sha1_digest(pg_digest *h, uint8 *src, uint len, uint8 *buf);
+
+static pg_digest
+int_digest_list [] = {
+	{ "md5", pg_md5_len, pg_md5_digest, {0}},
+	{ "sha1", pg_sha1_len, pg_sha1_digest, {0}},
+	{ NULL, NULL, NULL, {0}}
+};
+
+static uint
+pg_md5_len(pg_digest *h) {
+	return MD5_DIGEST_LENGTH;
+}
+
+static uint8 *
+pg_md5_digest(pg_digest *h, uint8 *src, uint len, uint8 *buf)
+{
+	MD5_CTX ctx;
+
+	MD5Init(&ctx);
+	MD5Update(&ctx, src, len);
+	MD5Final(buf, &ctx);
+
+	return buf;
+}
+
+static uint
+pg_sha1_len(pg_digest *h) {
+	return SHA1_DIGEST_LENGTH;
+}
+
+static uint8 *
+pg_sha1_digest(pg_digest *h, uint8 *src, uint len, uint8 *buf)
+{
+	SHA1_CTX ctx;
+
+	SHA1Init(&ctx);
+	SHA1Update(&ctx, src, len);
+	SHA1Final(buf, &ctx);
+	
+	return buf;
+}
+
+
+pg_digest *
+pg_find_digest(pg_digest *h, char *name)
+{
+	pg_digest *p;
+
+	for (p = int_digest_list; p->name; p++)
+		if (!strcasecmp(p->name, name))
+			return p;
+	return NULL;
+}
+
+

contrib/pgcrypto/md5.h

+/*	$KAME: md5.h,v 1.3 2000/02/22 14:01:18 itojun Exp $	*/
+
+/*
+ * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _NETINET6_MD5_H_
+#define _NETINET6_MD5_H_
+
+#define MD5_BUFLEN	64
+
+typedef struct {
+	union {
+		u_int32_t	md5_state32[4];
+		u_int8_t	md5_state8[16];
+	} md5_st;
+
+#define md5_sta		md5_st.md5_state32[0]
+#define md5_stb		md5_st.md5_state32[1]
+#define md5_stc		md5_st.md5_state32[2]
+#define md5_std		md5_st.md5_state32[3]
+#define md5_st8		md5_st.md5_state8
+
+	union {
+		u_int64_t	md5_count64;
+		u_int8_t	md5_count8[8];
+	} md5_count;
+#define md5_n	md5_count.md5_count64
+#define md5_n8	md5_count.md5_count8
+
+	u_int	md5_i;
+	u_int8_t	md5_buf[MD5_BUFLEN];
+} md5_ctxt;
+
+extern void md5_init __P((md5_ctxt *));
+extern void md5_loop __P((md5_ctxt *, u_int8_t *, u_int));
+extern void md5_pad __P((md5_ctxt *));
+extern void md5_result __P((u_int8_t *, md5_ctxt *));
+
+/* compatibility */
+#define MD5_CTX		md5_ctxt
+#define MD5Init(x)	md5_init((x))
+#define MD5Update(x, y, z)	md5_loop((x), (y), (z))
+#define MD5Final(x, y) \
+do {				\
+	md5_pad((y));		\
+	md5_result((x), (y));	\
+} while (0)
+
+#endif /* ! _NETINET6_MD5_H_*/

contrib/pgcrypto/mhash.c

+/*
+ * mhash.c
+ *		Wrapper for mhash library.
+ * 
+ * Copyright (c) 2000 Marko Kreen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: mhash.c,v 1.1 2000/10/31 13:11:28 petere Exp $
+ */
+
+#include <postgres.h>
+#include "pgcrypto.h"
+
+#include <mhash.h>
+
+static uint
+pg_mhash_len(pg_digest *hash);
+static uint8 *
+pg_mhash_digest(pg_digest *hash, uint8 *src,
+		uint len, uint8 *buf);
+
+static uint
+pg_mhash_len(pg_digest *h) {
+	return mhash_get_block_size(h->misc.code);
+}
+
+static uint8 *
+pg_mhash_digest(pg_digest *h, uint8 *src, uint len, uint8 *dst)
+{
+	uint8 *res;
+	
+	MHASH mh = mhash_init(h->misc.code);
+	mhash(mh, src, len);
+	res = mhash_end(mh);
+	
+	memcpy(dst, res, mhash_get_block_size(h->misc.code));
+	mhash_free(res);
+	
+	return dst;
+}
+
+pg_digest *
+pg_find_digest(pg_digest *h, char *name)
+{
+	size_t hnum, i, b;
+	char *mname;
+	
+	hnum = mhash_count();
+	for (i = 0; i <= hnum; i++) {
+		mname = mhash_get_hash_name(i);
+		if (mname == NULL)
+			continue;
+		b = strcasecmp(name, mname);
+		free(mname);
+		if (!b) {
+			h->name = mhash_get_hash_name(i);
+			h->length = pg_mhash_len;
+			h->digest = pg_mhash_digest;
+			h->misc.code = i;
+			return h;
+		}
+	}
+	return NULL;
+}
+

contrib/pgcrypto/openssl.c

+/*
+ * openssl.c
+ *		Wrapper for OpenSSL library.
+ * 
+ * Copyright (c) 2000 Marko Kreen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: openssl.c,v 1.1 2000/10/31 13:11:28 petere Exp $
+ */
+
+#include <postgres.h>
+#include "pgcrypto.h"
+
+#include <evp.h>
+
+static uint
+pg_ossl_len(pg_digest *h);
+static uint8 *
+pg_ossl_digest(pg_digest *h, uint8 *src, uint len, uint8 *buf);
+
+static uint
+pg_ossl_len(pg_digest *h) {
+	return EVP_MD_size((EVP_MD*)h->misc.ptr);
+}
+
+static uint8 *
+pg_ossl_digest(pg_digest *h, uint8 *src, uint len, uint8 *buf)
+{
+	EVP_MD *md = (EVP_MD*)h->misc.ptr;
+	EVP_MD_CTX ctx;
+
+	EVP_DigestInit(&ctx, md);
+	EVP_DigestUpdate(&ctx, src, len);
+	EVP_DigestFinal(&ctx, buf, NULL);
+	
+	return buf;
+}
+
+static int pg_openssl_initialized = 0;
+
+pg_digest *
+pg_find_digest(pg_digest *h, char *name)
+{
+	const EVP_MD *md;
+
+	if (!pg_openssl_initialized) {
+		OpenSSL_add_all_digests();
+		pg_openssl_initialized = 1;
+	}
+	
+	md = EVP_get_digestbyname(name);
+	if (md == NULL)
+		return NULL;
+	
+	h->name = name;
+	h->length = pg_ossl_len;
+	h->digest = pg_ossl_digest;
+	h->misc.ptr = (void*)md;
+	
+	return h;
+}
+
+

contrib/pgcrypto/pgcrypto.c

+/*
+ * pgcrypto.c
+ *		Cryptographic digests for PostgreSQL.
+ * 
+ * Copyright (c) 2000 Marko Kreen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: pgcrypto.c,v 1.1 2000/10/31 13:11:28 petere Exp $
+ */
+
+#include <postgres.h>
+#include <utils/builtins.h>
+
+#include "pgcrypto.h"
+
+/*
+ * maximum length of digest for internal buffers
+ */
+#define MAX_DIGEST_LENGTH	128
+
+/*
+ * NAMEDATALEN is used for hash names
+ */
+#if NAMEDATALEN < 16
+#error "NAMEDATALEN < 16: too small"
+#endif
+
+
+/* exported functions */
+Datum digest(PG_FUNCTION_ARGS);
+Datum digest_exists(PG_FUNCTION_ARGS);
+
+/* private stuff */
+static char *
+to_hex(uint8 *src, uint len, char *dst);
+static pg_digest *
+find_digest(pg_digest *hbuf, text *name, int silent);
+
+
+/* SQL function: hash(text, text) returns text */
+Datum
+digest(PG_FUNCTION_ARGS)
+{
+	text *arg;
+	text *name;
+	uint8 *p, buf[MAX_DIGEST_LENGTH];
+	uint len, hlen;
+	pg_digest *h, _hbuf;
+	text *res;
+	
+	if (PG_ARGISNULL(0) || PG_ARGISNULL(1))
+		PG_RETURN_NULL();
+	
+	name = PG_GETARG_TEXT_P(1);	
+	h = find_digest(&_hbuf, name, 0); /* will give error if fails */
+
+	hlen = h->length(h);
+	if (hlen > MAX_DIGEST_LENGTH)
+		elog(ERROR, "Hash length overflow: %d", hlen);
+	
+	res = (text *)palloc(hlen*2 + VARHDRSZ);
+	VARATT_SIZEP(res) = hlen*2 + VARHDRSZ;
+	
+	arg = PG_GETARG_TEXT_P(0);
+	len = VARSIZE(arg) - VARHDRSZ;
+	
+	p = h->digest(h, VARDATA(arg), len, buf);
+	to_hex(p, hlen, VARDATA(res));
+	
+	PG_FREE_IF_COPY(arg, 0);
+	PG_FREE_IF_COPY(name, 0);	// unnecessary i guess
+	
+	PG_RETURN_TEXT_P(res);
+}
+
+/* check if given hash exists */
+Datum
+digest_exists(PG_FUNCTION_ARGS)
+{
+	text *name;
+	pg_digest _hbuf, *res;
+
+	if (PG_ARGISNULL(0))
+		PG_RETURN_NULL();
+	
+	name = PG_GETARG_TEXT_P(0);
+	
+	res = find_digest(&_hbuf, name, 1);
+	
+	PG_FREE_IF_COPY(name, 0);	// unnecessary i guess
+
+	if (res != NULL)
+		PG_RETURN_BOOL(true);
+	PG_RETURN_BOOL(false);
+}
+
+static pg_digest *
+find_digest(pg_digest *hbuf, text *name, int silent)
+{
+	pg_digest *p;
+	char buf[NAMEDATALEN];
+	uint len;
+	
+	len = VARSIZE(name) - VARHDRSZ;
+	if (len >= NAMEDATALEN) {
+		if (silent)
+			return NULL;
+		elog(ERROR, "Hash type does not exist (name too long)");
+	}
+		
+	memcpy(buf, VARDATA(name), len);
+	buf[len] = 0;
+	
+	p = pg_find_digest(hbuf, buf);
+
+	if (p == NULL && !silent)
+		elog(ERROR, "Hash type does not exist: '%s'", buf);
+	return p;
+}
+
+static unsigned char *hextbl = "0123456789abcdef";
+
+/* dumps binary to hex...  Note that it does not null-terminate  */
+static char *
+to_hex(uint8 *buf, uint len, char *dst)
+{
+	uint i;
+	for (i = 0; i < len; i++) {
+		dst[i*2] = hextbl[(buf[i] >> 4) & 0xF];
+		dst[i*2 + 1] = hextbl[buf[i] & 0xF];
+	}
+	return dst;
+}
+

contrib/pgcrypto/pgcrypto.h

+/*
+ * pgcrypto.h
+ *		Header file for pgcrypto.
+ * 
+ * Copyright (c) 2000 Marko Kreen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: pgcrypto.h,v 1.1 2000/10/31 13:11:28 petere Exp $
+ */
+
+#ifndef _PG_CRYPTO_H
+#define _PG_CRYPTO_H
+
+#include <sys/types.h>
+
+typedef struct _pg_digest pg_digest;
+struct _pg_digest {
+	char *name;
+	uint (*length)(pg_digest *h);
+	uint8 *(*digest)(pg_digest *h, uint8 *data,
+			uint dlen, uint8 *buf);
+	/* private */
+	union {
+		uint code;
+		const void *ptr;
+	} misc;
+};
+
+extern pg_digest *pg_find_digest(pg_digest *hbuf, char *name);
+
+#endif

contrib/pgcrypto/pgcrypto.sql.in

+
+-- drop function digest(text, text);
+-- drop function digest_exists(text);
+
+CREATE FUNCTION digest(text, text) RETURNS text
+  AS '@MODULE_FILENAME@',
+  'digest' LANGUAGE 'newC';
+
+CREATE FUNCTION digest_exists(text) RETURNS bool
+  AS '@MODULE_FILENAME@',
+  'digest_exists' LANGUAGE 'newC';
+

contrib/pgcrypto/sha1.c

+/*	$KAME: sha1.c,v 1.3 2000/02/22 14:01:18 itojun Exp $	*/
+
+/*
+ * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+/*
+ * FIPS pub 180-1: Secure Hash Algorithm (SHA-1)
+ * based on: http://csrc.nist.gov/fips/fip180-1.txt
+ * implemented by Jun-ichiro itojun Itoh <itojun@itojun.org>
+ */
+
+#include <postgres.h>
+#include "pgcrypto.h"
+
+#include "sha1.h"
+
+/* sanity check */
+#if BYTE_ORDER != BIG_ENDIAN
+# if BYTE_ORDER != LITTLE_ENDIAN
+#  define unsupported 1
+# endif
+#endif
+
+#ifndef unsupported
+
+/* constant table */
+static u_int32_t _K[] = { 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xca62c1d6 };
+#define	K(t)	_K[(t) / 20]
+
+#define	F0(b, c, d)	(((b) & (c)) | ((~(b)) & (d)))
+#define	F1(b, c, d)	(((b) ^ (c)) ^ (d))
+#define	F2(b, c, d)	(((b) & (c)) | ((b) & (d)) | ((c) & (d)))
+#define	F3(b, c, d)	(((b) ^ (c)) ^ (d))
+
+#define	S(n, x)		(((x) << (n)) | ((x) >> (32 - n)))
+
+#define	H(n)	(ctxt->h.b32[(n)])
+#define	COUNT	(ctxt->count)
+#define	BCOUNT	(ctxt->c.b64[0] / 8)
+#define	W(n)	(ctxt->m.b32[(n)])
+
+#define	PUTBYTE(x)	{ \
+	ctxt->m.b8[(COUNT % 64)] = (x);		\
+	COUNT++;				\
+	COUNT %= 64;				\
+	ctxt->c.b64[0] += 8;			\
+	if (COUNT % 64 == 0)			\
+		sha1_step(ctxt);		\
+     }
+
+#define	PUTPAD(x)	{ \
+	ctxt->m.b8[(COUNT % 64)] = (x);		\
+	COUNT++;				\
+	COUNT %= 64;				\
+	if (COUNT % 64 == 0)			\
+		sha1_step(ctxt);		\
+     }
+
+static void sha1_step __P((struct sha1_ctxt *));
+
+static void
+sha1_step(ctxt)
+	struct sha1_ctxt *ctxt;
+{
+	u_int32_t	a, b, c, d, e;
+	size_t t, s;
+	u_int32_t	tmp;
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+	struct sha1_ctxt tctxt;
+	bcopy(&ctxt->m.b8[0], &tctxt.m.b8[0], 64);
+	ctxt->m.b8[0] = tctxt.m.b8[3]; ctxt->m.b8[1] = tctxt.m.b8[2];
+	ctxt->m.b8[2] = tctxt.m.b8[1]; ctxt->m.b8[3] = tctxt.m.b8[0];
+	ctxt->m.b8[4] = tctxt.m.b8[7]; ctxt->m.b8[5] = tctxt.m.b8[6];
+	ctxt->m.b8[6] = tctxt.m.b8[5]; ctxt->m.b8[7] = tctxt.m.b8[4];
+	ctxt->m.b8[8] = tctxt.m.b8[11]; ctxt->m.b8[9] = tctxt.m.b8[10];
+	ctxt->m.b8[10] = tctxt.m.b8[9]; ctxt->m.b8[11] = tctxt.m.b8[8];
+	ctxt->m.b8[12] = tctxt.m.b8[15]; ctxt->m.b8[13] = tctxt.m.b8[14];
+	ctxt->m.b8[14] = tctxt.m.b8[13]; ctxt->m.b8[15] = tctxt.m.b8[12];
+	ctxt->m.b8[16] = tctxt.m.b8[19]; ctxt->m.b8[17] = tctxt.m.b8[18];
+	ctxt->m.b8[18] = tctxt.m.b8[17]; ctxt->m.b8[19] = tctxt.m.b8[16];
+	ctxt->m.b8[20] = tctxt.m.b8[23]; ctxt->m.b8[21] = tctxt.m.b8[22];
+	ctxt->m.b8[22] = tctxt.m.b8[21]; ctxt->m.b8[23] = tctxt.m.b8[20];
+	ctxt->m.b8[24] = tctxt.m.b8[27]; ctxt->m.b8[25] = tctxt.m.b8[26];
+	ctxt->m.b8[26] = tctxt.m.b8[25]; ctxt->m.b8[27] = tctxt.m.b8[24];
+	ctxt->m.b8[28] = tctxt.m.b8[31]; ctxt->m.b8[29] = tctxt.m.b8[30];
+	ctxt->m.b8[30] = tctxt.m.b8[29]; ctxt->m.b8[31] = tctxt.m.b8[28];
+	ctxt->m.b8[32] = tctxt.m.b8[35]; ctxt->m.b8[33] = tctxt.m.b8[34];
+	ctxt->m.b8[34] = tctxt.m.b8[33]; ctxt->m.b8[35] = tctxt.m.b8[32];
+	ctxt->m.b8[36] = tctxt.m.b8[39]; ctxt->m.b8[37] = tctxt.m.b8[38];
+	ctxt->m.b8[38] = tctxt.m.b8[37]; ctxt->m.b8[39] = tctxt.m.b8[36];
+	ctxt->m.b8[40] = tctxt.m.b8[43]; ctxt->m.b8[41] = tctxt.m.b8[42];
+	ctxt->m.b8[42] = tctxt.m.b8[41]; ctxt->m.b8[43] = tctxt.m.b8[40];
+	ctxt->m.b8[44] = tctxt.m.b8[47]; ctxt->m.b8[45] = tctxt.m.b8[46];
+	ctxt->m.b8[46] = tctxt.m.b8[45]; ctxt->m.b8[47] = tctxt.m.b8[44];
+	ctxt->m.b8[48] = tctxt.m.b8[51]; ctxt->m.b8[49] = tctxt.m.b8[50];
+	ctxt->m.b8[50] = tctxt.m.b8[49]; ctxt->m.b8[51] = tctxt.m.b8[48];
+	ctxt->m.b8[52] = tctxt.m.b8[55]; ctxt->m.b8[53] = tctxt.m.b8[54];
+	ctxt->m.b8[54] = tctxt.m.b8[53]; ctxt->m.b8[55] = tctxt.m.b8[52];
+	ctxt->m.b8[56] = tctxt.m.b8[59]; ctxt->m.b8[57] = tctxt.m.b8[58];
+	ctxt->m.b8[58] = tctxt.m.b8[57]; ctxt->m.b8[59] = tctxt.m.b8[56];
+	ctxt->m.b8[60] = tctxt.m.b8[63]; ctxt->m.b8[61] = tctxt.m.b8[62];
+	ctxt->m.b8[62] = tctxt.m.b8[61]; ctxt->m.b8[63] = tctxt.m.b8[60];
+#endif
+
+	a = H(0); b = H(1); c = H(2); d = H(3); e = H(4);
+
+	for (t = 0; t < 20; t++) {
+		s = t & 0x0f;
+		if (t >= 16) {
+			W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^ W((s+2) & 0x0f) ^ W(s));
+		}
+		tmp = S(5, a) + F0(b, c, d) + e + W(s) + K(t);
+		e = d; d = c; c = S(30, b); b = a; a = tmp;
+	}
+	for (t = 20; t < 40; t++) {
+		s = t & 0x0f;
+		W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^ W((s+2) & 0x0f) ^ W(s));
+		tmp = S(5, a) + F1(b, c, d) + e + W(s) + K(t);
+		e = d; d = c; c = S(30, b); b = a; a = tmp;
+	}
+	for (t = 40; t < 60; t++) {
+		s = t & 0x0f;
+		W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^ W((s+2) & 0x0f) ^ W(s));
+		tmp = S(5, a) + F2(b, c, d) + e + W(s) + K(t);
+		e = d; d = c; c = S(30, b); b = a; a = tmp;
+	}
+	for (t = 60; t < 80; t++) {
+		s = t & 0x0f;
+		W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^ W((s+2) & 0x0f) ^ W(s));
+		tmp = S(5, a) + F3(b, c, d) + e + W(s) + K(t);
+		e = d; d = c; c = S(30, b); b = a; a = tmp;
+	}
+
+	H(0) = H(0) + a;
+	H(1) = H(1) + b;
+	H(2) = H(2) + c;
+	H(3) = H(3) + d;
+	H(4) = H(4) + e;
+
+	bzero(&ctxt->m.b8[0], 64);
+}
+
+/*------------------------------------------------------------*/
+
+void
+sha1_init(ctxt)
+	struct sha1_ctxt *ctxt;
+{
+	bzero(ctxt, sizeof(struct sha1_ctxt));
+	H(0) = 0x67452301;
+	H(1) = 0xefcdab89;
+	H(2) = 0x98badcfe;
+	H(3) = 0x10325476;
+	H(4) = 0xc3d2e1f0;
+}
+
+void
+sha1_pad(ctxt)
+	struct sha1_ctxt *ctxt;
+{
+	size_t padlen;		/*pad length in bytes*/
+	size_t padstart;
+
+	PUTPAD(0x80);
+
+	padstart = COUNT % 64;
+	padlen = 64 - padstart;
+	if (padlen < 8) {
+		bzero(&ctxt->m.b8[padstart], padlen);
+		COUNT += padlen;
+		COUNT %= 64;
+		sha1_step(ctxt);
+		padstart = COUNT % 64;	/* should be 0 */
+		padlen = 64 - padstart;	/* should be 64 */
+	}
+	bzero(&ctxt->m.b8[padstart], padlen - 8);
+	COUNT += (padlen - 8);
+	COUNT %= 64;
+#if BYTE_ORDER == BIG_ENDIAN
+	PUTPAD(ctxt->c.b8[0]); PUTPAD(ctxt->c.b8[1]);
+	PUTPAD(ctxt->c.b8[2]); PUTPAD(ctxt->c.b8[3]);
+	PUTPAD(ctxt->c.b8[4]); PUTPAD(ctxt->c.b8[5]);
+	PUTPAD(ctxt->c.b8[6]); PUTPAD(ctxt->c.b8[7]);
+#else
+	PUTPAD(ctxt->c.b8[7]); PUTPAD(ctxt->c.b8[6]);
+	PUTPAD(ctxt->c.b8[5]); PUTPAD(ctxt->c.b8[4]);
+	PUTPAD(ctxt->c.b8[3]); PUTPAD(ctxt->c.b8[2]);
+	PUTPAD(ctxt->c.b8[1]); PUTPAD(ctxt->c.b8[0]);
+#endif
+}
+
+void
+sha1_loop(ctxt, input0, len)
+	struct sha1_ctxt *ctxt;
+	const caddr_t input0;
+	size_t len;
+{
+	const u_int8_t *input;
+	size_t gaplen;
+	size_t gapstart;
+	size_t off;
+	size_t copysiz;
+
+	input = (const u_int8_t *)input0;
+	off = 0;
+
+	while (off < len) {
+		gapstart = COUNT % 64;
+		gaplen = 64 - gapstart;
+
+		copysiz = (gaplen < len - off) ? gaplen : len - off;
+		bcopy(&input[off], &ctxt->m.b8[gapstart], copysiz);
+		COUNT += copysiz;
+		COUNT %= 64;
+		ctxt->c.b64[0] += copysiz * 8;
+		if (COUNT % 64 == 0)
+			sha1_step(ctxt);
+		off += copysiz;
+	}
+}
+
+void
+sha1_result(ctxt, digest0)
+	struct sha1_ctxt *ctxt;
+	caddr_t digest0;
+{
+	u_int8_t *digest;
+
+	digest = (u_int8_t *)digest0;
+	sha1_pad(ctxt);
+#if BYTE_ORDER == BIG_ENDIAN
+	bcopy(&ctxt->h.b8[0], digest, 20);
+#else
+	digest[0] = ctxt->h.b8[3]; digest[1] = ctxt->h.b8[2];
+	digest[2] = ctxt->h.b8[1]; digest[3] = ctxt->h.b8[0];
+	digest[4] = ctxt->h.b8[7]; digest[5] = ctxt->h.b8[6];
+	digest[6] = ctxt->h.b8[5]; digest[7] = ctxt->h.b8[4];
+	digest[8] = ctxt->h.b8[11]; digest[9] = ctxt->h.b8[10];
+	digest[10] = ctxt->h.b8[9]; digest[11] = ctxt->h.b8[8];
+	digest[12] = ctxt->h.b8[15]; digest[13] = ctxt->h.b8[14];
+	digest[14] = ctxt->h.b8[13]; digest[15] = ctxt->h.b8[12];
+	digest[16] = ctxt->h.b8[19]; digest[17] = ctxt->h.b8[18];
+	digest[18] = ctxt->h.b8[17]; digest[19] = ctxt->h.b8[16];
+#endif
+}
+
+#endif /*unsupported*/

contrib/pgcrypto/sha1.h

+/*	$KAME: sha1.h,v 1.4 2000/02/22 14:01:18 itojun Exp $	*/
+
+/*
+ * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+/*
+ * FIPS pub 180-1: Secure Hash Algorithm (SHA-1)
+ * based on: http://csrc.nist.gov/fips/fip180-1.txt
+ * implemented by Jun-ichiro itojun Itoh <itojun@itojun.org>
+ */
+
+#ifndef _NETINET6_SHA1_H_
+#define _NETINET6_SHA1_H_
+
+struct sha1_ctxt {
+	union {
+		u_int8_t	b8[20];
+		u_int32_t	b32[5];
+	} h;
+	union {
+		u_int8_t	b8[8];
+		u_int64_t	b64[1];
+	} c;
+	union {
+		u_int8_t	b8[64];
+		u_int32_t	b32[16];
+	} m;
+	u_int8_t	count;
+};
+
+extern void sha1_init __P((struct sha1_ctxt *));
+extern void sha1_pad __P((struct sha1_ctxt *));
+extern void sha1_loop __P((struct sha1_ctxt *, const caddr_t, size_t));
+extern void sha1_result __P((struct sha1_ctxt *, caddr_t));
+
+/* compatibilty with other SHA1 source codes */
+typedef struct sha1_ctxt SHA1_CTX;
+#define SHA1Init(x)		sha1_init((x))
+#define SHA1Update(x, y, z)	sha1_loop((x), (y), (z))
+#define SHA1Final(x, y)		sha1_result((y), (x))
+
+#define	SHA1_RESULTLEN	(160/8)
+
+#endif /*_NETINET6_SHA1_H_*/