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Merge pull request #8278

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63c7f8b EPEE: Remove hmac-md5 (Jeffrey)
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luigi1111 2022-05-10 16:49:47 -05:00
commit 3f58b8938a
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93
contrib/epee/include/hmac-md5.h
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@ -1,93 +0,0 @@
/*
* libEtPan! -- a mail stuff library
*
* Copyright (C) 2001, 2005 - DINH Viet Hoa
* 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 libEtPan! 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 AUTHORS 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 AUTHORS 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.
*/
/* hmac-md5.h -- HMAC_MD5 functions
*/
/*
* $Id: hmac-md5.h,v 1.1.1.1 2005/03/18 20:17:28 zautrix Exp $
*/
#ifndef HMAC_MD5_H
#define HMAC_MD5_H 1
namespace md5
{
#define HMAC_MD5_SIZE 16
/* intermediate MD5 context */
typedef struct HMAC_MD5_CTX_s {
MD5_CTX ictx, octx;
} HMAC_MD5_CTX;
/* intermediate HMAC state
* values stored in network byte order (Big Endian)
*/
typedef struct HMAC_MD5_STATE_s {
UINT4 istate[4];
UINT4 ostate[4];
} HMAC_MD5_STATE;
/* One step hmac computation
*
* digest may be same as text or key
*/
void hmac_md5(const unsigned char *text, int text_len,
const unsigned char *key, int key_len,
unsigned char digest[HMAC_MD5_SIZE]);
/* create context from key
*/
void hmac_md5_init(HMAC_MD5_CTX *hmac,
const unsigned char *key, int key_len);
/* precalculate intermediate state from key
*/
void hmac_md5_precalc(HMAC_MD5_STATE *hmac,
const unsigned char *key, int key_len);
/* initialize context from intermediate state
*/
void hmac_md5_import(HMAC_MD5_CTX *hmac, HMAC_MD5_STATE *state);
#define hmac_md5_update(hmac, text, text_len) MD5Update(&(hmac)->ictx, (text), (text_len))
/* finish hmac from intermediate result. Intermediate result is zeroed.
*/
void hmac_md5_final(unsigned char digest[HMAC_MD5_SIZE],
HMAC_MD5_CTX *hmac);
}
#endif /* HMAC_MD5_H */

1
contrib/epee/include/md5_l.h
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@ -74,7 +74,6 @@ namespace md5
static void MD5Init(MD5_CTX * context);
static void MD5Update( MD5_CTX *context, const unsigned char *input, unsigned int inputLen );
static void MD5Final ( unsigned char digest[16], MD5_CTX *context );
static inline void hmac_md5(const unsigned char* text, int text_len, const unsigned char* key, int key_len, unsigned char *digest);
inline bool md5( unsigned char *input, int ilen, unsigned char output[16] )

208
contrib/epee/include/md5_l.inl
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@ -65,7 +65,6 @@ documentation and/or software.
#endif
#include "md5global.h"
#include "md5_l.h"
#include "hmac-md5.h"
namespace md5
{
@ -89,16 +88,6 @@ namespace md5
#define S43 15
#define S44 21
/*
static void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
static void Encode PROTO_LIST
((unsigned char *, UINT4 *, unsigned int));
static void Decode PROTO_LIST
((UINT4 *, unsigned char *, unsigned int));
static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
*/
static void MD5_memcpy (POINTER output, POINTER input, unsigned int len)
{
unsigned int i;
@ -107,17 +96,6 @@ namespace md5
output[i] = input[i];
}
/* Note: Replace "for loop" with standard memset if possible.
*/
static void MD5_memset (POINTER output, int value, unsigned int len)
{
unsigned int i;
for (i = 0; i < len; i++)
((char *)output)[i] = (char)value;
}
static void MD5Transform (UINT4 state[4], unsigned char block[64]);
static unsigned char* PADDING()
@ -371,190 +349,4 @@ namespace md5
*/
memwipe ((POINTER)x, sizeof (x));
}
/* Note: Replace "for loop" with standard memcpy if possible.
*/
inline
void hmac_md5_init(HMAC_MD5_CTX *hmac,
const unsigned char *key,
int key_len)
{
unsigned char k_ipad[65]; /* inner padding -
* key XORd with ipad
*/
unsigned char k_opad[65]; /* outer padding -
* key XORd with opad
*/
unsigned char tk[16];
int i;
/* if key is longer than 64 bytes reset it to key=MD5(key) */
if (key_len > 64) {
MD5_CTX tctx;
MD5Init(&tctx);
MD5Update(&tctx, key, key_len);
MD5Final(tk, &tctx);
key = tk;
key_len = 16;
}
/*
* the HMAC_MD5 transform looks like:
*
* MD5(K XOR opad, MD5(K XOR ipad, text))
*
* where K is an n byte key
* ipad is the byte 0x36 repeated 64 times
* opad is the byte 0x5c repeated 64 times
* and text is the data being protected
*/
/* start out by storing key in pads */
MD5_memset(k_ipad, '\0', sizeof k_ipad);
MD5_memset(k_opad, '\0', sizeof k_opad);
MD5_memcpy( k_ipad, (POINTER)key, key_len);
MD5_memcpy( k_opad, (POINTER)key, key_len);
/* XOR key with ipad and opad values */
for (i=0; i<64; i++) {
k_ipad[i] ^= 0x36;
k_opad[i] ^= 0x5c;
}
MD5Init(&hmac->ictx); /* init inner context */
MD5Update(&hmac->ictx, k_ipad, 64); /* apply inner pad */
MD5Init(&hmac->octx); /* init outer context */
MD5Update(&hmac->octx, k_opad, 64); /* apply outer pad */
/* scrub the pads and key context (if used) */
memwipe( (POINTER)&k_ipad, sizeof(k_ipad));
memwipe( (POINTER)&k_opad, sizeof(k_opad));
memwipe( (POINTER)&tk, sizeof(tk));
/* and we're done. */
}
/* The precalc and import routines here rely on the fact that we pad
* the key out to 64 bytes and use that to initialize the md5
* contexts, and that updating an md5 context with 64 bytes of data
* leaves nothing left over; all of the interesting state is contained
* in the state field, and none of it is left over in the count and
* buffer fields. So all we have to do is save the state field; we
* can zero the others when we reload it. Which is why the decision
* was made to pad the key out to 64 bytes in the first place. */
inline
void hmac_md5_precalc(HMAC_MD5_STATE *state,
const unsigned char *key,
int key_len)
{
HMAC_MD5_CTX hmac;
unsigned lupe;
hmac_md5_init(&hmac, key, key_len);
for (lupe = 0; lupe < 4; lupe++) {
state->istate[lupe] = htonl(hmac.ictx.state[lupe]);
state->ostate[lupe] = htonl(hmac.octx.state[lupe]);
}
memwipe( (POINTER)&hmac, sizeof(hmac));
}
inline
void hmac_md5_import(HMAC_MD5_CTX *hmac,
HMAC_MD5_STATE *state)
{
unsigned lupe;
MD5_memset( (POINTER)hmac, 0, sizeof(HMAC_MD5_CTX));
for (lupe = 0; lupe < 4; lupe++) {
hmac->ictx.state[lupe] = ntohl(state->istate[lupe]);
hmac->octx.state[lupe] = ntohl(state->ostate[lupe]);
}
/* Init the counts to account for our having applied
* 64 bytes of key; this works out to 0x200 (64 << 3; see
* MD5Update above...) */
hmac->ictx.count[0] = hmac->octx.count[0] = 0x200;
}
inline
void hmac_md5_final(unsigned char digest[HMAC_MD5_SIZE],
HMAC_MD5_CTX *hmac)
{
MD5Final(digest, &hmac->ictx); /* Finalize inner md5 */
MD5Update(&hmac->octx, digest, 16); /* Update outer ctx */
MD5Final(digest, &hmac->octx); /* Finalize outer md5 */
}
void hmac_md5(const unsigned char* text, int text_len, const unsigned char* key, int key_len, unsigned char *digest)
{
MD5_CTX context;
unsigned char k_ipad[65]; /* inner padding -
* key XORd with ipad
*/
unsigned char k_opad[65]; /* outer padding -
* key XORd with opad
*/
unsigned char tk[16];
int i;
/* if key is longer than 64 bytes reset it to key=MD5(key) */
if (key_len > 64) {
MD5_CTX tctx;
MD5Init(&tctx);
MD5Update(&tctx, key, key_len);
MD5Final(tk, &tctx);
key = tk;
key_len = 16;
}
/*
* the HMAC_MD5 transform looks like:
*
* MD5(K XOR opad, MD5(K XOR ipad, text))
*
* where K is an n byte key
* ipad is the byte 0x36 repeated 64 times
* opad is the byte 0x5c repeated 64 times
* and text is the data being protected
*/
/* start out by storing key in pads */
MD5_memset(k_ipad, '\0', sizeof k_ipad);
MD5_memset(k_opad, '\0', sizeof k_opad);
MD5_memcpy( k_ipad, (POINTER)key, key_len);
MD5_memcpy( k_opad, (POINTER)key, key_len);
/* XOR key with ipad and opad values */
for (i=0; i<64; i++) {
k_ipad[i] ^= 0x36;
k_opad[i] ^= 0x5c;
}
/*
* perform inner MD5
*/
MD5Init(&context); /* init context for 1st
* pass */
MD5Update(&context, k_ipad, 64); /* start with inner pad */
MD5Update(&context, text, text_len); /* then text of datagram */
MD5Final(digest, &context); /* finish up 1st pass */
/*
* perform outer MD5
*/
MD5Init(&context); /* init context for 2nd
* pass */
MD5Update(&context, k_opad, 64); /* start with outer pad */
MD5Update(&context, digest, 16); /* then results of 1st
* hash */
MD5Final(digest, &context); /* finish up 2nd pass */
}
}