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Remove internal SHA1 implementation, not needed now.

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git-svn-id: https://cryptsetup.googlecode.com/svn/trunk@82 36d66b0a-2a48-0410-832c-cd162a569da5
This commit is contained in:
Milan Broz
2009-07-30 15:01:22 +00:00
parent 88bdb609a8
commit 1a10c59b97
10 changed files with 3 additions and 699 deletions
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1
ChangeLog
View File

@@ -6,6 +6,7 @@
* Switch PBKDF2 from internal SHA1 to libgcrypt, make hash algorithm not hardcoded to SHA1 here.
* Add required parameters for changing hash used in LUKS key setup scheme.
* Do not export simple XOR helper now used only inside AF functions.
* Completely remove internal SHA1 implementanion code, not needed anymore.
2009-07-28 Milan Broz <mbroz@redhat.com>
* Pad luks header to 512 sector size.

9
luks/Makefile.am
View File

@@ -2,7 +2,7 @@ moduledir = $(libdir)/cryptsetup
noinst_LTLIBRARIES = libluks.la
libluks_la_CFLAGS = -I $(top_srcdir)/luks/sha -Wall
libluks_la_CFLAGS = -Wall
libluks_la_SOURCES = \
af.c \
@@ -11,11 +11,6 @@ libluks_la_SOURCES = \
keyencryption.c \
hexprint.c \
random.c \
sha/sha1.c \
sha/hmac_sha1.h \
sha/hmac.h \
sha/hmac_sha1.c \
sha/sha1.h \
pbkdf.h \
random.h \
af.h \
@@ -26,7 +21,7 @@ INCLUDES = -D_GNU_SOURCE \
-D_FILE_OFFSET_BITS=64 \
-I$(top_srcdir)/lib
EXTRA_DIST = sha/hmac.c testing/fileDiffer.py testing/compatimage.bz2
EXTRA_DIST = testing/fileDiffer.py testing/compatimage.bz2
ORIG_IMG = /tmp/luks-test-orig
IMG = /tmp/luks-test

1
luks/af.c
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@@ -26,7 +26,6 @@
#include <netinet/in.h>
#include <errno.h>
#include <gcrypt.h>
#include "sha1.h"
#include "random.h"
static void XORblock(char const *src1, char const *src2, char *dst, size_t n)

1
luks/keymanage.c
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@@ -33,7 +33,6 @@
#include "luks.h"
#include "af.h"
#include "pbkdf.h"
#include "sha1.h"
#include "random.h"
#include <uuid/uuid.h>
#include <../lib/internal.h>

145
luks/sha/hmac.c
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@@ -1,145 +0,0 @@
/*
---------------------------------------------------------------------------
Copyright (c) 2002, Dr Brian Gladman, Worcester, UK. All rights reserved.
LICENSE TERMS
The free distribution and use of this software in both source and binary
form is allowed (with or without changes) provided that:
1. distributions of this source code include the above copyright
notice, this list of conditions and the following disclaimer;
2. distributions in binary form include the above copyright
notice, this list of conditions and the following disclaimer
in the documentation and/or other associated materials;
3. the copyright holder's name is not used to endorse products
built using this software without specific written permission.
ALTERNATIVELY, provided that this notice is retained in full, this product
may be distributed under the terms of the GNU General Public License (GPL),
in which case the provisions of the GPL apply INSTEAD OF those given above.
DISCLAIMER
This software is provided 'as is' with no explicit or implied warranties
in respect of its properties, including, but not limited to, correctness
and/or fitness for purpose.
---------------------------------------------------------------------------
Issue Date: 26/08/2003
This is an implementation of HMAC, the FIPS standard keyed hash function
*/
#include <netinet/in.h>
#include "hmac.h"
#if defined(__cplusplus)
extern "C"
{
#endif
/* initialise the HMAC context to zero */
void hmac_sha_begin(hmac_ctx cx[1])
{
memset(cx, 0, sizeof(hmac_ctx));
}
/* input the HMAC key (can be called multiple times) */
int hmac_sha_key(const unsigned char key[], size_t key_len, hmac_ctx cx[1])
{
if(cx->klen == HMAC_IN_DATA) /* error if further key input */
return HMAC_BAD_MODE; /* is attempted in data mode */
if(cx->klen + key_len > HASH_INPUT_SIZE) /* if the key has to be hashed */
{
if(cx->klen <= HASH_INPUT_SIZE) /* if the hash has not yet been */
{ /* started, initialise it and */
sha_begin(cx->ctx); /* hash stored key characters */
sha_hash(cx->key, cx->klen, cx->ctx);
}
sha_hash(key, key_len, cx->ctx); /* hash long key data into hash */
}
else /* otherwise store key data */
memcpy(cx->key + cx->klen, key, key_len);
cx->klen += key_len; /* update the key length count */
return HMAC_OK;
}
/* input the HMAC data (can be called multiple times) - */
/* note that this call terminates the key input phase */
void hmac_sha_data(const unsigned char data[], size_t data_len, hmac_ctx cx[1])
{ unsigned int i;
if(cx->klen != HMAC_IN_DATA) /* if not yet in data phase */
{
if(cx->klen > HASH_INPUT_SIZE) /* if key is being hashed */
{ /* complete the hash and */
sha_end(cx->key, cx->ctx); /* store the result as the */
cx->klen = HASH_OUTPUT_SIZE; /* key and set new length */
}
/* pad the key if necessary */
memset(cx->key + cx->klen, 0, HASH_INPUT_SIZE - cx->klen);
/* xor ipad into key value */
for(i = 0; i < (HASH_INPUT_SIZE >> 2); ++i)
((uint32_t*)cx->key)[i] ^= 0x36363636;
/* and start hash operation */
sha_begin(cx->ctx);
sha_hash(cx->key, HASH_INPUT_SIZE, cx->ctx);
/* mark as now in data mode */
cx->klen = HMAC_IN_DATA;
}
/* hash the data (if any) */
if(data_len)
sha_hash(data, data_len, cx->ctx);
}
/* compute and output the MAC value */
void hmac_sha_end(unsigned char mac[], size_t mac_len, hmac_ctx cx[1])
{ unsigned char dig[HASH_OUTPUT_SIZE];
unsigned int i;
/* if no data has been entered perform a null data phase */
if(cx->klen != HMAC_IN_DATA)
hmac_sha_data((const unsigned char*)0, 0, cx);
sha_end(dig, cx->ctx); /* complete the inner hash */
/* set outer key value using opad and removing ipad */
for(i = 0; i < (HASH_INPUT_SIZE >> 2); ++i)
((uint32_t*)cx->key)[i] ^= 0x36363636 ^ 0x5c5c5c5c;
/* perform the outer hash operation */
sha_begin(cx->ctx);
sha_hash(cx->key, HASH_INPUT_SIZE, cx->ctx);
sha_hash(dig, HASH_OUTPUT_SIZE, cx->ctx);
sha_end(dig, cx->ctx);
/* output the hash value */
for(i = 0; i < mac_len; ++i)
mac[i] = dig[i];
}
/* 'do it all in one go' subroutine */
void hmac_sha(const unsigned char key[], size_t key_len,
const unsigned char data[], size_t data_len,
unsigned char mac[], size_t mac_len)
{ hmac_ctx cx[1];
hmac_sha_begin(cx);
hmac_sha_key(key, key_len, cx);
hmac_sha_data(data, data_len, cx);
hmac_sha_end(mac, mac_len, cx);
}
#if defined(__cplusplus)
}
#endif

101
luks/sha/hmac.h
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@@ -1,101 +0,0 @@
/*
---------------------------------------------------------------------------
Copyright (c) 2002, Dr Brian Gladman, Worcester, UK. All rights reserved.
LICENSE TERMS
The free distribution and use of this software in both source and binary
form is allowed (with or without changes) provided that:
1. distributions of this source code include the above copyright
notice, this list of conditions and the following disclaimer;
2. distributions in binary form include the above copyright
notice, this list of conditions and the following disclaimer
in the documentation and/or other associated materials;
3. the copyright holder's name is not used to endorse products
built using this software without specific written permission.
ALTERNATIVELY, provided that this notice is retained in full, this product
may be distributed under the terms of the GNU General Public License (GPL),
in which case the provisions of the GPL apply INSTEAD OF those given above.
DISCLAIMER
This software is provided 'as is' with no explicit or implied warranties
in respect of its properties, including, but not limited to, correctness
and/or fitness for purpose.
---------------------------------------------------------------------------
Issue Date: 26/08/2003
This is an implementation of HMAC, the FIPS standard keyed hash function
*/
#ifndef _HMAC_H
#define _HMAC_H
#include <memory.h>
#if defined(__cplusplus)
extern "C"
{
#endif
#if !defined(USE_SHA1) && !defined(USE_SHA256)
#error define USE_SHA1 or USE_SHA256 to set the HMAC hash algorithm
#endif
#ifdef USE_SHA1
#include "sha1.h"
#define HASH_INPUT_SIZE SHA1_BLOCK_SIZE
#define HASH_OUTPUT_SIZE SHA1_DIGEST_SIZE
#define sha_ctx sha1_ctx
#define sha_begin sha1_begin
#define sha_hash sha1_hash
#define sha_end sha1_end
#endif
#ifdef USE_SHA256
#include "sha2.h"
#define HASH_INPUT_SIZE SHA256_BLOCK_SIZE
#define HASH_OUTPUT_SIZE SHA256_DIGEST_SIZE
#define sha_ctx sha256_ctx
#define sha_begin sha256_begin
#define sha_hash sha256_hash
#define sha_end sha256_end
#endif
#define HMAC_OK 0
#define HMAC_BAD_MODE -1
#define HMAC_IN_DATA 0xffffffff
typedef struct
{ unsigned char key[HASH_INPUT_SIZE];
sha_ctx ctx[1];
unsigned long klen;
} hmac_ctx;
void hmac_sha_begin(hmac_ctx cx[1]);
int hmac_sha_key(const unsigned char key[], size_t key_len, hmac_ctx cx[1]);
void hmac_sha_data(const unsigned char data[], size_t data_len, hmac_ctx cx[1]);
void hmac_sha_end(unsigned char mac[], size_t mac_len, hmac_ctx cx[1]);
void hmac_sha(const unsigned char key[], size_t key_len,
const unsigned char data[], size_t data_len,
unsigned char mac[], size_t mac_len);
#if defined(__cplusplus)
}
#endif
#endif

2
luks/sha/hmac_sha1.c
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@@ -1,2 +0,0 @@
#define USE_SHA1
#include "hmac.c"

2
luks/sha/hmac_sha1.h
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@@ -1,2 +0,0 @@
#define USE_SHA1
#include "hmac.h"

355
luks/sha/sha1.c
View File

@@ -1,355 +0,0 @@
/*
---------------------------------------------------------------------------
Copyright (c) 2002, Dr Brian Gladman, Worcester, UK. All rights reserved.
LICENSE TERMS
The free distribution and use of this software in both source and binary
form is allowed (with or without changes) provided that:
1. distributions of this source code include the above copyright
notice, this list of conditions and the following disclaimer;
2. distributions in binary form include the above copyright
notice, this list of conditions and the following disclaimer
in the documentation and/or other associated materials;
3. the copyright holder's name is not used to endorse products
built using this software without specific written permission.
ALTERNATIVELY, provided that this notice is retained in full, this product
may be distributed under the terms of the GNU General Public License (GPL),
in which case the provisions of the GPL apply INSTEAD OF those given above.
DISCLAIMER
This software is provided 'as is' with no explicit or implied warranties
in respect of its properties, including, but not limited to, correctness
and/or fitness for purpose.
---------------------------------------------------------------------------
Issue Date: 16/01/2004
This is a byte oriented version of SHA1 that operates on arrays of bytes
stored in memory. It runs at 22 cycles per byte on a Pentium P4 processor
*/
#include <string.h> /* for memcpy() etc. */
#include <stdlib.h> /* for _lrotl with VC++ */
#include "sha1.h"
#if defined(__cplusplus)
extern "C"
{
#endif
/*
To obtain the highest speed on processors with 32-bit words, this code
needs to determine the order in which bytes are packed into such words.
The following block of code is an attempt to capture the most obvious
ways in which various environemnts specify their endian definitions.
It may well fail, in which case the definitions will need to be set by
editing at the points marked **** EDIT HERE IF NECESSARY **** below.
*/
/* PLATFORM SPECIFIC INCLUDES */
#define BRG_LITTLE_ENDIAN 1234 /* byte 0 is least significant (i386) */
#define BRG_BIG_ENDIAN 4321 /* byte 0 is most significant (mc68k) */
#if defined(__GNUC__) || defined(__GNU_LIBRARY__)
# if defined(__FreeBSD__) || defined(__OpenBSD__)
# include <sys/endian.h>
# elif defined( BSD ) && ( BSD >= 199103 )
# include <machine/endian.h>
# elif defined(__APPLE__)
# if defined(__BIG_ENDIAN__) && !defined( BIG_ENDIAN )
# define BIG_ENDIAN
# elif defined(__LITTLE_ENDIAN__) && !defined( LITTLE_ENDIAN )
# define LITTLE_ENDIAN
# endif
# else
# include <endian.h>
# if !defined(__BEOS__)
# include <byteswap.h>
# endif
# endif
#endif
#if !defined(PLATFORM_BYTE_ORDER)
# if defined(LITTLE_ENDIAN) || defined(BIG_ENDIAN)
# if defined(LITTLE_ENDIAN) && !defined(BIG_ENDIAN)
# define PLATFORM_BYTE_ORDER BRG_LITTLE_ENDIAN
# elif !defined(LITTLE_ENDIAN) && defined(BIG_ENDIAN)
# define PLATFORM_BYTE_ORDER BRG_BIG_ENDIAN
# elif defined(BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN)
# define PLATFORM_BYTE_ORDER BRG_LITTLE_ENDIAN
# elif defined(BYTE_ORDER) && (BYTE_ORDER == BIG_ENDIAN)
# define PLATFORM_BYTE_ORDER BRG_BIG_ENDIAN
# endif
# elif defined(_LITTLE_ENDIAN) || defined(_BIG_ENDIAN)
# if defined(_LITTLE_ENDIAN) && !defined(_BIG_ENDIAN)
# define PLATFORM_BYTE_ORDER BRG_LITTLE_ENDIAN
# elif !defined(_LITTLE_ENDIAN) && defined(_BIG_ENDIAN)
# define PLATFORM_BYTE_ORDER BRG_BIG_ENDIAN
# elif defined(_BYTE_ORDER) && (_BYTE_ORDER == _LITTLE_ENDIAN)
# define PLATFORM_BYTE_ORDER BRG_LITTLE_ENDIAN
# elif defined(_BYTE_ORDER) && (_BYTE_ORDER == _BIG_ENDIAN)
# define PLATFORM_BYTE_ORDER BRG_BIG_ENDIAN
# endif
# elif defined(__LITTLE_ENDIAN__) || defined(__BIG_ENDIAN__)
# if defined(__LITTLE_ENDIAN__) && !defined(__BIG_ENDIAN__)
# define PLATFORM_BYTE_ORDER BRG_LITTLE_ENDIAN
# elif !defined(__LITTLE_ENDIAN__) && defined(__BIG_ENDIAN__)
# define PLATFORM_BYTE_ORDER BRG_BIG_ENDIAN
# elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __LITTLE_ENDIAN__)
# define PLATFORM_BYTE_ORDER BRG_LITTLE_ENDIAN
# elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __BIG_ENDIAN__)
# define PLATFORM_BYTE_ORDER BRG_BIG_ENDIAN
# endif
# endif
#endif
/* if the platform is still unknown, try to find its byte order */
/* from commonly used machine defines */
#if !defined(PLATFORM_BYTE_ORDER)
#if defined( __alpha__ ) || defined( __alpha ) || defined( i386 ) || \
defined( __i386__ ) || defined( _M_I86 ) || defined( _M_IX86 ) || \
defined( __OS2__ ) || defined( sun386 ) || defined( __TURBOC__ ) || \
defined( vax ) || defined( vms ) || defined( VMS ) || \
defined( __VMS )
# define PLATFORM_BYTE_ORDER BRG_LITTLE_ENDIAN
#elif defined( AMIGA ) || defined( applec ) || defined( __AS400__ ) || \
defined( _CRAY ) || defined( __hppa ) || defined( __hp9000 ) || \
defined( ibm370 ) || defined( mc68000 ) || defined( m68k ) || \
defined( __MRC__ ) || defined( __MVS__ ) || defined( __MWERKS__ ) || \
defined( sparc ) || defined( __sparc) || defined( SYMANTEC_C ) || \
defined( __TANDEM ) || defined( THINK_C ) || defined( __VMCMS__ )
# define PLATFORM_BYTE_ORDER BRG_BIG_ENDIAN
#elif 0 /* **** EDIT HERE IF NECESSARY **** */
# define PLATFORM_BYTE_ORDER BRG_LITTLE_ENDIAN
#elif 0 /* **** EDIT HERE IF NECESSARY **** */
# define PLATFORM_BYTE_ORDER BRG_BIG_ENDIAN
#else
# error Please edit sha1.c (line 134 or 136) to set the platform byte order
#endif
#endif
#ifdef _MSC_VER
#pragma intrinsic(memcpy)
#endif
#if 0 && defined(_MSC_VER)
#define rotl32 _lrotl
#define rotr32 _lrotr
#else
#define rotl32(x,n) (((x) << n) | ((x) >> (32 - n)))
#define rotr32(x,n) (((x) >> n) | ((x) << (32 - n)))
#endif
#if !defined(bswap_32)
#define bswap_32(x) (rotr32((x), 24) & 0x00ff00ff | rotr32((x), 8) & 0xff00ff00)
#endif
#if (PLATFORM_BYTE_ORDER == BRG_LITTLE_ENDIAN)
#define SWAP_BYTES
#else
#undef SWAP_BYTES
#endif
#if defined(SWAP_BYTES)
#define bsw_32(p,n) \
{ int _i = (n); while(_i--) ((sha1_32t*)p)[_i] = bswap_32(((sha1_32t*)p)[_i]); }
#else
#define bsw_32(p,n)
#endif
#define SHA1_MASK (SHA1_BLOCK_SIZE - 1)
#if 0
#define ch(x,y,z) (((x) & (y)) ^ (~(x) & (z)))
#define parity(x,y,z) ((x) ^ (y) ^ (z))
#define maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
#else /* Discovered by Rich Schroeppel and Colin Plumb */
#define ch(x,y,z) ((z) ^ ((x) & ((y) ^ (z))))
#define parity(x,y,z) ((x) ^ (y) ^ (z))
#define maj(x,y,z) (((x) & (y)) | ((z) & ((x) ^ (y))))
#endif
/* Compile 64 bytes of hash data into SHA1 context. Note */
/* that this routine assumes that the byte order in the */
/* ctx->wbuf[] at this point is in such an order that low */
/* address bytes in the ORIGINAL byte stream in this buffer */
/* will go to the high end of 32-bit words on BOTH big and */
/* little endian systems */
#ifdef ARRAY
#define q(v,n) v[n]
#else
#define q(v,n) v##n
#endif
#define one_cycle(v,a,b,c,d,e,f,k,h) \
q(v,e) += rotr32(q(v,a),27) + \
f(q(v,b),q(v,c),q(v,d)) + k + h; \
q(v,b) = rotr32(q(v,b), 2)
#define five_cycle(v,f,k,i) \
one_cycle(v, 0,1,2,3,4, f,k,hf(i )); \
one_cycle(v, 4,0,1,2,3, f,k,hf(i+1)); \
one_cycle(v, 3,4,0,1,2, f,k,hf(i+2)); \
one_cycle(v, 2,3,4,0,1, f,k,hf(i+3)); \
one_cycle(v, 1,2,3,4,0, f,k,hf(i+4))
void sha1_compile(sha1_ctx ctx[1])
{ sha1_32t *w = ctx->wbuf;
#ifdef ARRAY
sha1_32t v[5];
memcpy(v, ctx->hash, 5 * sizeof(sha1_32t));
#else
sha1_32t v0, v1, v2, v3, v4;
v0 = ctx->hash[0]; v1 = ctx->hash[1];
v2 = ctx->hash[2]; v3 = ctx->hash[3];
v4 = ctx->hash[4];
#endif
#define hf(i) w[i]
five_cycle(v, ch, 0x5a827999, 0);
five_cycle(v, ch, 0x5a827999, 5);
five_cycle(v, ch, 0x5a827999, 10);
one_cycle(v,0,1,2,3,4, ch, 0x5a827999, hf(15)); \
#undef hf
#define hf(i) (w[(i) & 15] = rotl32( \
w[((i) + 13) & 15] ^ w[((i) + 8) & 15] \
^ w[((i) + 2) & 15] ^ w[(i) & 15], 1))
one_cycle(v,4,0,1,2,3, ch, 0x5a827999, hf(16));
one_cycle(v,3,4,0,1,2, ch, 0x5a827999, hf(17));
one_cycle(v,2,3,4,0,1, ch, 0x5a827999, hf(18));
one_cycle(v,1,2,3,4,0, ch, 0x5a827999, hf(19));
five_cycle(v, parity, 0x6ed9eba1, 20);
five_cycle(v, parity, 0x6ed9eba1, 25);
five_cycle(v, parity, 0x6ed9eba1, 30);
five_cycle(v, parity, 0x6ed9eba1, 35);
five_cycle(v, maj, 0x8f1bbcdc, 40);
five_cycle(v, maj, 0x8f1bbcdc, 45);
five_cycle(v, maj, 0x8f1bbcdc, 50);
five_cycle(v, maj, 0x8f1bbcdc, 55);
five_cycle(v, parity, 0xca62c1d6, 60);
five_cycle(v, parity, 0xca62c1d6, 65);
five_cycle(v, parity, 0xca62c1d6, 70);
five_cycle(v, parity, 0xca62c1d6, 75);
#ifdef ARRAY
ctx->hash[0] += v[0]; ctx->hash[1] += v[1];
ctx->hash[2] += v[2]; ctx->hash[3] += v[3];
ctx->hash[4] += v[4];
#else
ctx->hash[0] += v0; ctx->hash[1] += v1;
ctx->hash[2] += v2; ctx->hash[3] += v3;
ctx->hash[4] += v4;
#endif
}
void sha1_begin(sha1_ctx ctx[1])
{
ctx->count[0] = ctx->count[1] = 0;
ctx->hash[0] = 0x67452301;
ctx->hash[1] = 0xefcdab89;
ctx->hash[2] = 0x98badcfe;
ctx->hash[3] = 0x10325476;
ctx->hash[4] = 0xc3d2e1f0;
}
/* SHA1 hash data in an array of bytes into hash buffer and */
/* call the hash_compile function as required. */
void sha1_hash(const unsigned char data[], size_t len, sha1_ctx ctx[1])
{ sha1_32t pos = (sha1_32t)(ctx->count[0] & SHA1_MASK),
space = SHA1_BLOCK_SIZE - pos;
const unsigned char *sp = data;
if((ctx->count[0] += len) < len)
++(ctx->count[1]);
while(len >= space) /* tranfer whole blocks if possible */
{
memcpy(((unsigned char*)ctx->wbuf) + pos, sp, space);
sp += space; len -= space; space = SHA1_BLOCK_SIZE; pos = 0;
bsw_32(ctx->wbuf, SHA1_BLOCK_SIZE >> 2);
sha1_compile(ctx);
}
memcpy(((unsigned char*)ctx->wbuf) + pos, sp, len);
}
/* SHA1 final padding and digest calculation */
void sha1_end(unsigned char hval[], sha1_ctx ctx[1])
{ sha1_32t i = (sha1_32t)(ctx->count[0] & SHA1_MASK);
/* put bytes in the buffer in an order in which references to */
/* 32-bit words will put bytes with lower addresses into the */
/* top of 32 bit words on BOTH big and little endian machines */
bsw_32(ctx->wbuf, (i + 3) >> 2);
/* we now need to mask valid bytes and add the padding which is */
/* a single 1 bit and as many zero bits as necessary. Note that */
/* we can always add the first padding byte here because the */
/* buffer always has at least one empty slot */
ctx->wbuf[i >> 2] &= 0xffffff80 << 8 * (~i & 3);
ctx->wbuf[i >> 2] |= 0x00000080 << 8 * (~i & 3);
/* we need 9 or more empty positions, one for the padding byte */
/* (above) and eight for the length count. If there is not */
/* enough space, pad and empty the buffer */
if(i > SHA1_BLOCK_SIZE - 9)
{
if(i < 60) ctx->wbuf[15] = 0;
sha1_compile(ctx);
i = 0;
}
else /* compute a word index for the empty buffer positions */
i = (i >> 2) + 1;
while(i < 14) /* and zero pad all but last two positions */
ctx->wbuf[i++] = 0;
/* the following 32-bit length fields are assembled in the */
/* wrong byte order on little endian machines but this is */
/* corrected later since they are only ever used as 32-bit */
/* word values. */
ctx->wbuf[14] = (ctx->count[1] << 3) | (ctx->count[0] >> 29);
ctx->wbuf[15] = ctx->count[0] << 3;
sha1_compile(ctx);
/* extract the hash value as bytes in case the hash buffer is */
/* misaligned for 32-bit words */
for(i = 0; i < SHA1_DIGEST_SIZE; ++i)
hval[i] = (unsigned char)(ctx->hash[i >> 2] >> (8 * (~i & 3)));
}
void sha1(unsigned char hval[], const unsigned char data[], size_t len)
{ sha1_ctx cx[1];
sha1_begin(cx); sha1_hash(data, len, cx); sha1_end(hval, cx);
}
#if defined(__cplusplus)
}
#endif

85
luks/sha/sha1.h
View File

@@ -1,85 +0,0 @@
/*
---------------------------------------------------------------------------
Copyright (c) 2002, Dr Brian Gladman, Worcester, UK. All rights reserved.
LICENSE TERMS
The free distribution and use of this software in both source and binary
form is allowed (with or without changes) provided that:
1. distributions of this source code include the above copyright
notice, this list of conditions and the following disclaimer;
2. distributions in binary form include the above copyright
notice, this list of conditions and the following disclaimer
in the documentation and/or other associated materials;
3. the copyright holder's name is not used to endorse products
built using this software without specific written permission.
ALTERNATIVELY, provided that this notice is retained in full, this product
may be distributed under the terms of the GNU General Public License (GPL),
in which case the provisions of the GPL apply INSTEAD OF those given above.
DISCLAIMER
This software is provided 'as is' with no explicit or implied warranties
in respect of its properties, including, but not limited to, correctness
and/or fitness for purpose.
---------------------------------------------------------------------------
Issue Date: 26/08/2003
*/
#ifndef _SHA1_H
#define _SHA1_H
#include <stddef.h>
#include <limits.h>
#define SHA1_BLOCK_SIZE 64
#define SHA1_DIGEST_SIZE 20
#if defined(__cplusplus)
extern "C"
{
#endif
/* define an unsigned 32-bit type */
#if defined(_MSC_VER)
typedef unsigned long sha1_32t;
#elif defined(ULONG_MAX) && ULONG_MAX == 0xfffffffful
typedef unsigned long sha1_32t;
#elif defined(UINT_MAX) && UINT_MAX == 0xffffffff
typedef unsigned int sha1_32t;
#else
# error Please define sha1_32t as an unsigned 32 bit type in sha1.h
#endif
/* type to hold the SHA256 context */
typedef struct
{ sha1_32t count[2];
sha1_32t hash[5];
sha1_32t wbuf[16];
} sha1_ctx;
/* Note that these prototypes are the same for both bit and */
/* byte oriented implementations. However the length fields */
/* are in bytes or bits as appropriate for the version used */
/* and bit sequences are input as arrays of bytes in which */
/* bit sequences run from the most to the least significant */
/* end of each byte */
void sha1_compile(sha1_ctx ctx[1]);
void sha1_begin(sha1_ctx ctx[1]);
void sha1_hash(const unsigned char data[], size_t len, sha1_ctx ctx[1]);
void sha1_end(unsigned char hval[], sha1_ctx ctx[1]);
void sha1(unsigned char hval[], const unsigned char data[], size_t len);
#if defined(__cplusplus)
}
#endif
#endif