home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
OS/2 Shareware BBS: 10 Tools
/
10-Tools.zip
/
crypl200.zip
/
LIB_MD5.C
< prev
next >
Wrap
Text File
|
1996-09-29
|
6KB
|
194 lines
/****************************************************************************
* *
* cryptlib MD5 Hash Routines *
* Copyright Peter Gutmann 1992-1996 *
* *
****************************************************************************/
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "crypt.h"
#ifdef INC_ALL
#include "md5.h"
#else
#include "hash/md5.h"
#endif /* Compiler-specific includes */
/****************************************************************************
* *
* MD5 Self-test Routines *
* *
****************************************************************************/
/* Test the MD5 output against the test vectors given in RFC 1321 */
void md5HashBuffer( void *hashInfo, BYTE *outBuffer, BYTE *inBuffer,
int length, const HASH_STATE hashState );
static struct {
char *data; /* Data to hash */
int length; /* Length of data */
BYTE digest[ MD5_DIGESTSIZE ]; /* Digest of data */
} digestValues[] = {
{ "", 0,
{ 0xD4, 0x1D, 0x8C, 0xD9, 0x8F, 0x00, 0xB2, 0x04,
0xE9, 0x80, 0x09, 0x98, 0xEC, 0xF8, 0x42, 0x7E } },
{ "a", 1,
{ 0x0C, 0xC1, 0x75, 0xB9, 0xC0, 0xF1, 0xB6, 0xA8,
0x31, 0xC3, 0x99, 0xE2, 0x69, 0x77, 0x26, 0x61 } },
{ "abc", 3,
{ 0x90, 0x01, 0x50, 0x98, 0x3C, 0xD2, 0x4F, 0xB0,
0xD6, 0x96, 0x3F, 0x7D, 0x28, 0xE1, 0x7F, 0x72 } },
{ "message digest", 14,
{ 0xF9, 0x6B, 0x69, 0x7D, 0x7C, 0xB7, 0x93, 0x8D,
0x52, 0x5A, 0x2F, 0x31, 0xAA, 0xF1, 0x61, 0xD0 } },
{ "abcdefghijklmnopqrstuvwxyz", 26,
{ 0xC3, 0xFC, 0xD3, 0xD7, 0x61, 0x92, 0xE4, 0x00,
0x7D, 0xFB, 0x49, 0x6C, 0xCA, 0x67, 0xE1, 0x3B } },
{ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", 62,
{ 0xD1, 0x74, 0xAB, 0x98, 0xD2, 0x77, 0xD9, 0xF5,
0xA5, 0x61, 0x1C, 0x2C, 0x9F, 0x41, 0x9D, 0x9F } },
{ "12345678901234567890123456789012345678901234567890123456789012345678901234567890", 80,
{ 0x57, 0xED, 0xF4, 0xA2, 0x2B, 0xE3, 0xC9, 0x55,
0xAC, 0x49, 0xDA, 0x2E, 0x21, 0x07, 0xB6, 0x7A } },
{ NULL, 0, { 0 } }
};
int md5SelfTest( void )
{
BYTE digest[ MD5_DIGESTSIZE ];
int i;
/* Test MD5 against the test vectors given in RFC 1320 */
for( i = 0; digestValues[ i ].data != NULL; i++ )
{
md5HashBuffer( NULL, digest, ( BYTE * ) digestValues[ i ].data,
digestValues[ i ].length, HASH_ALL );
if( memcmp( digest, digestValues[ i ].digest, MD5_DIGESTSIZE ) )
return( CRYPT_SELFTEST );
}
return( CRYPT_OK );
}
/****************************************************************************
* *
* Init/Shutdown Routines *
* *
****************************************************************************/
/* Perform auxiliary init and shutdown actions on an encryption context */
int md5Init( CRYPT_INFO *cryptInfo )
{
int status;
/* Allocate memory for the MD5 context within the encryption context */
if( cryptInfo->privateData != NULL )
return( CRYPT_INITED );
if( ( status = secureMalloc( &cryptInfo->privateData, sizeof( MD5_INFO ) ) ) != CRYPT_OK )
return( status );
md5Initial( ( MD5_INFO * ) cryptInfo->privateData );
return( CRYPT_OK );
}
int md5End( CRYPT_INFO *cryptInfo )
{
/* Free any allocated memory */
secureFree( &cryptInfo->privateData );
return( CRYPT_OK );
}
/****************************************************************************
* *
* MD5 Hash Routines *
* *
****************************************************************************/
/* Hash data using MD5 */
int md5Hash( CRYPT_INFO *cryptInfo, BYTE *buffer, int noBytes )
{
MD5_INFO *md5Info = ( MD5_INFO * ) cryptInfo->privateData;
/* If we've already called md5Final(), we can't continue */
if( md5Info->done )
return( CRYPT_COMPLETE );
if( !noBytes )
md5Final( md5Info );
else
md5Update( md5Info, buffer, noBytes );
return( CRYPT_OK );
}
/* Retrieve the hash value */
int md5GetData( CRYPT_INFO *cryptInfo, BYTE *buffer )
{
MD5_INFO *md5Info = ( MD5_INFO * ) cryptInfo->privateData;
int i;
/* Extract the digest into the memory buffer */
for( i = 0; i < MD5_DIGESTSIZE / 4; i++ )
{
mputLLong( buffer, md5Info->digest[ i ] );
}
return( ( md5Info->done ) ? CRYPT_OK : CRYPT_INCOMPLETE );
}
/* Internal API: Hash a single block of memory without the overhead of
creating an encryption context */
void md5HashBuffer( void *hashInfo, BYTE *outBuffer, BYTE *inBuffer,
int length, const HASH_STATE hashState )
{
MD5_INFO *md5Info = ( MD5_INFO * ) hashInfo, md5InfoBuffer;
int i;
/* If the user has left it up to us to allocate the hash context buffer,
use the internal buffer */
if( md5Info == NULL )
md5Info = &md5InfoBuffer;
if( hashState == HASH_ALL )
{
md5Initial( md5Info );
md5Update( md5Info, inBuffer, length );
md5Final( md5Info );
for( i = 0; i < MD5_DIGESTSIZE / 4; i++ )
{
mputLLong( outBuffer, md5Info->digest[ i ] );
}
}
else
switch( hashState )
{
case HASH_START:
md5Initial( md5Info );
/* Drop through */
case HASH_CONTINUE:
md5Update( md5Info, inBuffer, length );
break;
case HASH_END:
md5Update( md5Info, inBuffer, length );
md5Final( md5Info );
for( i = 0; i < MD5_DIGESTSIZE / 4; i++ )
{
mputLLong( outBuffer, md5Info->digest[ i ] );
}
}
/* Clean up */
zeroise( &md5InfoBuffer, sizeof( MD5_INFO ) );
}