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9f5d1a38d1
curl-curl/lib/md4.c
Viktor Szakats bf6a34d8eb
md4, md5: switch to wolfCrypt API in wolfSSL builds 
Replacing the OpenSSL-like compatibility interface, and syncing with other
hashes, when building with wolfSSL.

Also: stop stomping on OpenSSL public MD4 symbols. This makes the wolfSSL
coexist workaround unnecessary, while also syncing up with MD5 sources.

After this patch the only remaining reference to wolfSSL's OpenSSL
compatibility layer is in `lib/curl_ntlm_core.c`.

Closes #21093
2026-03-25 18:56:40 +01:00

462 lines
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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "curl_setup.h"
#ifdef USE_CURL_NTLM_CORE
#include "curl_md4.h"
#ifdef USE_OPENSSL
#include <openssl/opensslv.h>
#if OPENSSL_VERSION_NUMBER >= 0x30000000L && !defined(USE_AMISSL)
/* OpenSSL 3.0.0 marks the MD4 functions as deprecated */
#define OPENSSL_NO_MD4
#else
/* Cover also OPENSSL_NO_MD4 configured in openssl */
#include <openssl/opensslconf.h>
#endif
#endif /* USE_OPENSSL */
#ifdef USE_WOLFSSL
#include <wolfssl/options.h>
#endif
/* When OpenSSL or wolfSSL is available, we use their MD4 functions. */
#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_MD4)
#include <openssl/md4.h>
/* Map directly to OpenSSL implementation */
#define my_md4_ctx MD4_CTX
#define my_md4_init MD4_Init
#define my_md4_update MD4_Update
#define my_md4_final MD4_Final
#elif defined(USE_WOLFSSL) && !defined(NO_MD4)
#include <wolfssl/wolfcrypt/md4.h>
#include <wolfssl/version.h>
#if LIBWOLFSSL_VERSION_HEX >= 0x05007006
typedef wc_Md4 my_md4_ctx;
#else
typedef Md4 my_md4_ctx;
#endif
static int my_md4_init(my_md4_ctx *ctx)
{
wc_InitMd4(ctx);
return 1;
}
static void my_md4_update(my_md4_ctx *ctx,
const void *input, unsigned long len)
{
wc_Md4Update(ctx, input, (word32)len);
}
static void my_md4_final(unsigned char *digest, my_md4_ctx *ctx)
{
wc_Md4Final(ctx, digest);
}
#elif (defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && \
(__MAC_OS_X_VERSION_MAX_ALLOWED >= 1040) && \
defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \
(__MAC_OS_X_VERSION_MIN_REQUIRED < 101500)) || \
(defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && \
(__IPHONE_OS_VERSION_MAX_ALLOWED >= 20000) && \
defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && \
(__IPHONE_OS_VERSION_MIN_REQUIRED < 130000))
#include <CommonCrypto/CommonDigest.h>
typedef CC_MD4_CTX my_md4_ctx;
static int my_md4_init(my_md4_ctx *ctx)
{
return CC_MD4_Init(ctx);
}
static void my_md4_update(my_md4_ctx *ctx,
const void *input, unsigned long len)
{
(void)CC_MD4_Update(ctx, input, (CC_LONG)len);
}
static void my_md4_final(unsigned char *digest, my_md4_ctx *ctx)
{
(void)CC_MD4_Final(digest, ctx);
}
#elif defined(USE_WIN32_CRYPTO)
#include <wincrypt.h>
struct md4_ctx {
HCRYPTPROV hCryptProv;
HCRYPTHASH hHash;
};
typedef struct md4_ctx my_md4_ctx;
static int my_md4_init(my_md4_ctx *ctx)
{
ctx->hCryptProv = 0;
ctx->hHash = 0;
if(!CryptAcquireContext(&ctx->hCryptProv, NULL, NULL, PROV_RSA_FULL,
CRYPT_VERIFYCONTEXT | CRYPT_SILENT))
return 0;
if(!CryptCreateHash(ctx->hCryptProv, CALG_MD4, 0, 0, &ctx->hHash)) {
CryptReleaseContext(ctx->hCryptProv, 0);
ctx->hCryptProv = 0;
return 0;
}
return 1;
}
static void my_md4_update(my_md4_ctx *ctx,
const void *input, unsigned long len)
{
CryptHashData(ctx->hHash, (const BYTE *)input, (unsigned int)len, 0);
}
static void my_md4_final(unsigned char *digest, my_md4_ctx *ctx)
{
unsigned long length = 0;
CryptGetHashParam(ctx->hHash, HP_HASHVAL, NULL, &length, 0);
if(length == MD4_DIGEST_LENGTH)
CryptGetHashParam(ctx->hHash, HP_HASHVAL, digest, &length, 0);
if(ctx->hHash)
CryptDestroyHash(ctx->hHash);
if(ctx->hCryptProv)
CryptReleaseContext(ctx->hCryptProv, 0);
}
#elif defined(USE_GNUTLS)
#include <nettle/md4.h>
typedef struct md4_ctx my_md4_ctx;
static int my_md4_init(my_md4_ctx *ctx)
{
md4_init(ctx);
return 1;
}
static void my_md4_update(my_md4_ctx *ctx,
const void *input, unsigned long len)
{
md4_update(ctx, len, input);
}
static void my_md4_final(unsigned char *digest, my_md4_ctx *ctx)
{
md4_digest(ctx, MD4_DIGEST_SIZE, digest);
}
#else
/* When no other crypto library is available, or the crypto library does not
* support MD4, we use this code segment this implementation of it
*
* This is an OpenSSL-compatible implementation of the RSA Data Security, Inc.
* MD4 Message-Digest Algorithm (RFC 1320).
*
* Homepage:
* https://openwall.info/wiki/people/solar/software/public-domain-source-code/md4
*
* Author:
* Alexander Peslyak, better known as Solar Designer <solar at openwall.com>
*
* This software was written by Alexander Peslyak in 2001. No copyright is
* claimed, and the software is hereby placed in the public domain. In case
* this attempt to disclaim copyright and place the software in the public
* domain is deemed null and void, then the software is Copyright (c) 2001
* Alexander Peslyak and it is hereby released to the general public under
* the following terms:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted.
*
* There is ABSOLUTELY NO WARRANTY, express or implied.
*
* (This is a heavily cut-down "BSD license".)
*/
struct md4_ctx {
uint32_t lo, hi;
uint32_t a, b, c, d;
unsigned char buffer[64];
uint32_t block[16];
};
typedef struct md4_ctx my_md4_ctx;
/*
* The basic MD4 functions.
*
* F and G are optimized compared to their RFC 1320 definitions, with the
* optimization for F borrowed from Colin Plumb's MD5 implementation.
*/
#define MD4_F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
#define MD4_G(x, y, z) (((x) & ((y) | (z))) | ((y) & (z)))
#define MD4_H(x, y, z) ((x) ^ (y) ^ (z))
/*
* The MD4 transformation for all three rounds.
*/
#define MD4_STEP(f, a, b, c, d, x, s) \
(a) += f(b, c, d) + (x); \
(a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s))));
/*
* SET reads 4 input bytes in little-endian byte order and stores them
* in a properly aligned word in host byte order.
*
* The check for little-endian architectures that tolerate unaligned memory
* accesses is an optimization. Nothing will break if it does not work.
*/
#if defined(__i386__) || defined(__x86_64__) || defined(__vax__)
#define MD4_SET(n) (*(const uint32_t *)(const void *)&ptr[(n) * 4])
#define MD4_GET(n) MD4_SET(n)
#else
#define MD4_SET(n) (ctx->block[n] = \
(uint32_t)ptr[(n) * 4] | \
((uint32_t)ptr[((n) * 4) + 1] << 8) | \
((uint32_t)ptr[((n) * 4) + 2] << 16) | \
((uint32_t)ptr[((n) * 4) + 3] << 24))
#define MD4_GET(n) ctx->block[n]
#endif
/*
* This processes one or more 64-byte data blocks, but does NOT update
* the bit counters. There are no alignment requirements.
*/
static const void *my_md4_body(my_md4_ctx *ctx,
const void *input, unsigned long size)
{
const unsigned char *ptr;
uint32_t a, b, c, d;
ptr = (const unsigned char *)input;
a = ctx->a;
b = ctx->b;
c = ctx->c;
d = ctx->d;
do {
uint32_t saved_a, saved_b, saved_c, saved_d;
saved_a = a;
saved_b = b;
saved_c = c;
saved_d = d;
/* Round 1 */
MD4_STEP(MD4_F, a, b, c, d, MD4_SET(0), 3)
MD4_STEP(MD4_F, d, a, b, c, MD4_SET(1), 7)
MD4_STEP(MD4_F, c, d, a, b, MD4_SET(2), 11)
MD4_STEP(MD4_F, b, c, d, a, MD4_SET(3), 19)
MD4_STEP(MD4_F, a, b, c, d, MD4_SET(4), 3)
MD4_STEP(MD4_F, d, a, b, c, MD4_SET(5), 7)
MD4_STEP(MD4_F, c, d, a, b, MD4_SET(6), 11)
MD4_STEP(MD4_F, b, c, d, a, MD4_SET(7), 19)
MD4_STEP(MD4_F, a, b, c, d, MD4_SET(8), 3)
MD4_STEP(MD4_F, d, a, b, c, MD4_SET(9), 7)
MD4_STEP(MD4_F, c, d, a, b, MD4_SET(10), 11)
MD4_STEP(MD4_F, b, c, d, a, MD4_SET(11), 19)
MD4_STEP(MD4_F, a, b, c, d, MD4_SET(12), 3)
MD4_STEP(MD4_F, d, a, b, c, MD4_SET(13), 7)
MD4_STEP(MD4_F, c, d, a, b, MD4_SET(14), 11)
MD4_STEP(MD4_F, b, c, d, a, MD4_SET(15), 19)
/* Round 2 */
MD4_STEP(MD4_G, a, b, c, d, MD4_GET(0) + 0x5a827999, 3)
MD4_STEP(MD4_G, d, a, b, c, MD4_GET(4) + 0x5a827999, 5)
MD4_STEP(MD4_G, c, d, a, b, MD4_GET(8) + 0x5a827999, 9)
MD4_STEP(MD4_G, b, c, d, a, MD4_GET(12) + 0x5a827999, 13)
MD4_STEP(MD4_G, a, b, c, d, MD4_GET(1) + 0x5a827999, 3)
MD4_STEP(MD4_G, d, a, b, c, MD4_GET(5) + 0x5a827999, 5)
MD4_STEP(MD4_G, c, d, a, b, MD4_GET(9) + 0x5a827999, 9)
MD4_STEP(MD4_G, b, c, d, a, MD4_GET(13) + 0x5a827999, 13)
MD4_STEP(MD4_G, a, b, c, d, MD4_GET(2) + 0x5a827999, 3)
MD4_STEP(MD4_G, d, a, b, c, MD4_GET(6) + 0x5a827999, 5)
MD4_STEP(MD4_G, c, d, a, b, MD4_GET(10) + 0x5a827999, 9)
MD4_STEP(MD4_G, b, c, d, a, MD4_GET(14) + 0x5a827999, 13)
MD4_STEP(MD4_G, a, b, c, d, MD4_GET(3) + 0x5a827999, 3)
MD4_STEP(MD4_G, d, a, b, c, MD4_GET(7) + 0x5a827999, 5)
MD4_STEP(MD4_G, c, d, a, b, MD4_GET(11) + 0x5a827999, 9)
MD4_STEP(MD4_G, b, c, d, a, MD4_GET(15) + 0x5a827999, 13)
/* Round 3 */
MD4_STEP(MD4_H, a, b, c, d, MD4_GET(0) + 0x6ed9eba1, 3)
MD4_STEP(MD4_H, d, a, b, c, MD4_GET(8) + 0x6ed9eba1, 9)
MD4_STEP(MD4_H, c, d, a, b, MD4_GET(4) + 0x6ed9eba1, 11)
MD4_STEP(MD4_H, b, c, d, a, MD4_GET(12) + 0x6ed9eba1, 15)
MD4_STEP(MD4_H, a, b, c, d, MD4_GET(2) + 0x6ed9eba1, 3)
MD4_STEP(MD4_H, d, a, b, c, MD4_GET(10) + 0x6ed9eba1, 9)
MD4_STEP(MD4_H, c, d, a, b, MD4_GET(6) + 0x6ed9eba1, 11)
MD4_STEP(MD4_H, b, c, d, a, MD4_GET(14) + 0x6ed9eba1, 15)
MD4_STEP(MD4_H, a, b, c, d, MD4_GET(1) + 0x6ed9eba1, 3)
MD4_STEP(MD4_H, d, a, b, c, MD4_GET(9) + 0x6ed9eba1, 9)
MD4_STEP(MD4_H, c, d, a, b, MD4_GET(5) + 0x6ed9eba1, 11)
MD4_STEP(MD4_H, b, c, d, a, MD4_GET(13) + 0x6ed9eba1, 15)
MD4_STEP(MD4_H, a, b, c, d, MD4_GET(3) + 0x6ed9eba1, 3)
MD4_STEP(MD4_H, d, a, b, c, MD4_GET(11) + 0x6ed9eba1, 9)
MD4_STEP(MD4_H, c, d, a, b, MD4_GET(7) + 0x6ed9eba1, 11)
MD4_STEP(MD4_H, b, c, d, a, MD4_GET(15) + 0x6ed9eba1, 15)
a += saved_a;
b += saved_b;
c += saved_c;
d += saved_d;
ptr += 64;
} while(size -= 64);
ctx->a = a;
ctx->b = b;
ctx->c = c;
ctx->d = d;
return ptr;
}
static int my_md4_init(my_md4_ctx *ctx)
{
ctx->a = 0x67452301;
ctx->b = 0xefcdab89;
ctx->c = 0x98badcfe;
ctx->d = 0x10325476;
ctx->lo = 0;
ctx->hi = 0;
return 1;
}
static void my_md4_update(my_md4_ctx *ctx,
const void *input, unsigned long len)
{
uint32_t saved_lo;
unsigned long used;
saved_lo = ctx->lo;
ctx->lo = (saved_lo + len) & 0x1fffffff;
if(ctx->lo < saved_lo)
ctx->hi++;
ctx->hi += (uint32_t)len >> 29;
used = saved_lo & 0x3f;
if(used) {
unsigned long available = 64 - used;
if(len < available) {
memcpy(&ctx->buffer[used], input, len);
return;
}
memcpy(&ctx->buffer[used], input, available);
input = (const unsigned char *)input + available;
len -= available;
my_md4_body(ctx, ctx->buffer, 64);
}
if(len >= 64) {
input = my_md4_body(ctx, input, len & ~(unsigned long)0x3f);
len &= 0x3f;
}
memcpy(ctx->buffer, input, len);
}
static void my_md4_final(unsigned char *digest, my_md4_ctx *ctx)
{
unsigned long used, available;
used = ctx->lo & 0x3f;
ctx->buffer[used++] = 0x80;
available = 64 - used;
if(available < 8) {
memset(&ctx->buffer[used], 0, available);
my_md4_body(ctx, ctx->buffer, 64);
used = 0;
available = 64;
}
memset(&ctx->buffer[used], 0, available - 8);
ctx->lo <<= 3;
ctx->buffer[56] = curlx_ultouc((ctx->lo) & 0xff);
ctx->buffer[57] = curlx_ultouc((ctx->lo >> 8) & 0xff);
ctx->buffer[58] = curlx_ultouc((ctx->lo >> 16) & 0xff);
ctx->buffer[59] = curlx_ultouc((ctx->lo >> 24) & 0xff);
ctx->buffer[60] = curlx_ultouc((ctx->hi) & 0xff);
ctx->buffer[61] = curlx_ultouc((ctx->hi >> 8) & 0xff);
ctx->buffer[62] = curlx_ultouc((ctx->hi >> 16) & 0xff);
ctx->buffer[63] = curlx_ultouc(ctx->hi >> 24);
my_md4_body(ctx, ctx->buffer, 64);
digest[0] = curlx_ultouc((ctx->a) & 0xff);
digest[1] = curlx_ultouc((ctx->a >> 8) & 0xff);
digest[2] = curlx_ultouc((ctx->a >> 16) & 0xff);
digest[3] = curlx_ultouc(ctx->a >> 24);
digest[4] = curlx_ultouc((ctx->b) & 0xff);
digest[5] = curlx_ultouc((ctx->b >> 8) & 0xff);
digest[6] = curlx_ultouc((ctx->b >> 16) & 0xff);
digest[7] = curlx_ultouc(ctx->b >> 24);
digest[8] = curlx_ultouc((ctx->c) & 0xff);
digest[9] = curlx_ultouc((ctx->c >> 8) & 0xff);
digest[10] = curlx_ultouc((ctx->c >> 16) & 0xff);
digest[11] = curlx_ultouc(ctx->c >> 24);
digest[12] = curlx_ultouc((ctx->d) & 0xff);
digest[13] = curlx_ultouc((ctx->d >> 8) & 0xff);
digest[14] = curlx_ultouc((ctx->d >> 16) & 0xff);
digest[15] = curlx_ultouc(ctx->d >> 24);
memset(ctx, 0, sizeof(*ctx));
}
#endif /* CRYPTO LIBS */
CURLcode Curl_md4it(unsigned char *output,
const unsigned char *input, const size_t len)
{
my_md4_ctx ctx;
if(!my_md4_init(&ctx))
return CURLE_FAILED_INIT;
my_md4_update(&ctx, input, curlx_uztoui(len));
my_md4_final(output, &ctx);
return CURLE_OK;
}
#endif /* USE_CURL_NTLM_CORE */
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