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|
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2021, 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.
*
***************************************************************************/
#include "curl_setup.h"
#if !defined(CURL_DISABLE_CRYPTO_AUTH)
#include "curl_md4.h"
#include "warnless.h"
#ifdef USE_OPENSSL
#include <openssl/opensslconf.h>
#if defined(OPENSSL_VERSION_MAJOR) && (OPENSSL_VERSION_MAJOR >= 3)
/* OpenSSL 3.0.0 marks the MD4 functions as deprecated */
#define OPENSSL_NO_MD4
#endif
#endif /* USE_OPENSSL */
#ifdef USE_WOLFSSL
#error #include <wolfssl/options.h>
#ifdef NO_MD4
#define OPENSSL_NO_MD4
#endif
#endif
#ifdef USE_MBEDTLS
#error #include <mbedtls/version.h>
#if MBEDTLS_VERSION_NUMBER >= 0x03000000
#error #include <mbedtls/mbedtls_config.h>
#else
#error #include <mbedtls/config.h>
#endif
#if(MBEDTLS_VERSION_NUMBER >= 0x02070000)
#define HAS_MBEDTLS_RESULT_CODE_BASED_FUNCTIONS
#endif
#endif /* USE_MBEDTLS */
#if defined(USE_GNUTLS)
#include <nettle/md4.h>
#include "curl_memory.h"
/* The last #include file should be: */
#include "memdebug.h"
typedef struct md4_ctx MD4_CTX;
static void MD4_Init(MD4_CTX *ctx)
{
md4_init(ctx);
}
static void MD4_Update(MD4_CTX *ctx, const void *data, unsigned long size)
{
md4_update(ctx, size, data);
}
static void MD4_Final(unsigned char *result, MD4_CTX *ctx)
{
md4_digest(ctx, MD4_DIGEST_SIZE, result);
}
#elif (defined(USE_OPENSSL) || defined(USE_WOLFSSL)) && \
!defined(OPENSSL_NO_MD4)
/* When OpenSSL or wolfSSL is available, we use their MD4 functions. */
#include <openssl/md4.h>
#elif (defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && \
(__MAC_OS_X_VERSION_MAX_ALLOWED >= 1040) && \
defined(__MAC_OS_X_VERSION_MIN_ALLOWED) && \
(__MAC_OS_X_VERSION_MIN_ALLOWED < 101500)) || \
(defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && \
(__IPHONE_OS_VERSION_MAX_ALLOWED >= 20000))
#include <CommonCrypto/CommonDigest.h>
#include "curl_memory.h"
/* The last #include file should be: */
#include "memdebug.h"
typedef CC_MD4_CTX MD4_CTX;
static void MD4_Init(MD4_CTX *ctx)
{
(void)CC_MD4_Init(ctx);
}
static void MD4_Update(MD4_CTX *ctx, const void *data, unsigned long size)
{
(void)CC_MD4_Update(ctx, data, (CC_LONG)size);
}
static void MD4_Final(unsigned char *result, MD4_CTX *ctx)
{
(void)CC_MD4_Final(result, ctx);
}
#elif defined(USE_WIN32_CRYPTO)
#include <wincrypt.h>
#include "curl_memory.h"
/* The last #include file should be: */
#include "memdebug.h"
struct md4_ctx {
HCRYPTPROV hCryptProv;
HCRYPTHASH hHash;
};
typedef struct md4_ctx MD4_CTX;
static void MD4_Init(MD4_CTX *ctx)
{
ctx->hCryptProv = 0;
ctx->hHash = 0;
if(CryptAcquireContext(&ctx->hCryptProv, NULL, NULL, PROV_RSA_FULL,
CRYPT_VERIFYCONTEXT | CRYPT_SILENT)) {
CryptCreateHash(ctx->hCryptProv, CALG_MD4, 0, 0, &ctx->hHash);
}
}
static void MD4_Update(MD4_CTX *ctx, const void *data, unsigned long size)
{
CryptHashData(ctx->hHash, (BYTE *)data, (unsigned int) size, 0);
}
static void MD4_Final(unsigned char *result, 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, result, &length, 0);
if(ctx->hHash)
CryptDestroyHash(ctx->hHash);
if(ctx->hCryptProv)
CryptReleaseContext(ctx->hCryptProv, 0);
}
#elif(defined(USE_MBEDTLS) && defined(MBEDTLS_MD4_C))
#error #include <mbedtls/md4.h>
#include "curl_memory.h"
/* The last #include file should be: */
#include "memdebug.h"
struct md4_ctx {
void *data;
unsigned long size;
};
typedef struct md4_ctx MD4_CTX;
static void MD4_Init(MD4_CTX *ctx)
{
ctx->data = NULL;
ctx->size = 0;
}
static void MD4_Update(MD4_CTX *ctx, const void *data, unsigned long size)
{
if(!ctx->data) {
ctx->data = malloc(size);
if(ctx->data) {
memcpy(ctx->data, data, size);
ctx->size = size;
}
}
}
static void MD4_Final(unsigned char *result, MD4_CTX *ctx)
{
if(ctx->data) {
#if !defined(HAS_MBEDTLS_RESULT_CODE_BASED_FUNCTIONS)
mbedtls_md4(ctx->data, ctx->size, result);
#else
(void) mbedtls_md4_ret(ctx->data, ctx->size, result);
#endif
Curl_safefree(ctx->data);
ctx->size = 0;
}
}
#else
/* When no other crypto library is available, or the crypto library doesn't
* 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's ABSOLUTELY NO WARRANTY, express or implied.
*
* (This is a heavily cut-down "BSD license".)
*
* This differs from Colin Plumb's older public domain implementation in that
* no exactly 32-bit integer data type is required (any 32-bit or wider
* unsigned integer data type will do), there's no compile-time endianness
* configuration, and the function prototypes match OpenSSL's. No code from
* Colin Plumb's implementation has been reused; this comment merely compares
* the properties of the two independent implementations.
*
* The primary goals of this implementation are portability and ease of use.
* It is meant to be fast, but not as fast as possible. Some known
* optimizations are not included to reduce source code size and avoid
* compile-time configuration.
*/
#include <string.h>
/* Any 32-bit or wider unsigned integer data type will do */
typedef unsigned int MD4_u32plus;
struct md4_ctx {
MD4_u32plus lo, hi;
MD4_u32plus a, b, c, d;
unsigned char buffer[64];
MD4_u32plus block[16];
};
typedef struct md4_ctx MD4_CTX;
static void MD4_Init(MD4_CTX *ctx);
static void MD4_Update(MD4_CTX *ctx, const void *data, unsigned long size);
static void MD4_Final(unsigned char *result, MD4_CTX *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 F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
#define G(x, y, z) (((x) & ((y) | (z))) | ((y) & (z)))
#define H(x, y, z) ((x) ^ (y) ^ (z))
/*
* The MD4 transformation for all three rounds.
*/
#define 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 just an optimization. Nothing will break if it
* doesn't work.
*/
#if defined(__i386__) || defined(__x86_64__) || defined(__vax__)
#define SET(n) \
(*(MD4_u32plus *)(void *)&ptr[(n) * 4])
#define GET(n) \
SET(n)
#else
#define SET(n) \
(ctx->block[(n)] = \
(MD4_u32plus)ptr[(n) * 4] | \
((MD4_u32plus)ptr[(n) * 4 + 1] << 8) | \
((MD4_u32plus)ptr[(n) * 4 + 2] << 16) | \
((MD4_u32plus)ptr[(n) * 4 + 3] << 24))
#define 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 *body(MD4_CTX *ctx, const void *data, unsigned long size)
{
const unsigned char *ptr;
MD4_u32plus a, b, c, d;
ptr = (const unsigned char *)data;
a = ctx->a;
b = ctx->b;
c = ctx->c;
d = ctx->d;
do {
MD4_u32plus saved_a, saved_b, saved_c, saved_d;
saved_a = a;
saved_b = b;
saved_c = c;
saved_d = d;
/* Round 1 */
STEP(F, a, b, c, d, SET(0), 3)
STEP(F, d, a, b, c, SET(1), 7)
STEP(F, c, d, a, b, SET(2), 11)
STEP(F, b, c, d, a, SET(3), 19)
STEP(F, a, b, c, d, SET(4), 3)
STEP(F, d, a, b, c, SET(5), 7)
STEP(F, c, d, a, b, SET(6), 11)
STEP(F, b, c, d, a, SET(7), 19)
STEP(F, a, b, c, d, SET(8), 3)
STEP(F, d, a, b, c, SET(9), 7)
STEP(F, c, d, a, b, SET(10), 11)
STEP(F, b, c, d, a, SET(11), 19)
STEP(F, a, b, c, d, SET(12), 3)
STEP(F, d, a, b, c, SET(13), 7)
STEP(F, c, d, a, b, SET(14), 11)
STEP(F, b, c, d, a, SET(15), 19)
/* Round 2 */
STEP(G, a, b, c, d, GET(0) + 0x5a827999, 3)
STEP(G, d, a, b, c, GET(4) + 0x5a827999, 5)
STEP(G, c, d, a, b, GET(8) + 0x5a827999, 9)
STEP(G, b, c, d, a, GET(12) + 0x5a827999, 13)
STEP(G, a, b, c, d, GET(1) + 0x5a827999, 3)
STEP(G, d, a, b, c, GET(5) + 0x5a827999, 5)
STEP(G, c, d, a, b, GET(9) + 0x5a827999, 9)
STEP(G, b, c, d, a, GET(13) + 0x5a827999, 13)
STEP(G, a, b, c, d, GET(2) + 0x5a827999, 3)
STEP(G, d, a, b, c, GET(6) + 0x5a827999, 5)
STEP(G, c, d, a, b, GET(10) + 0x5a827999, 9)
STEP(G, b, c, d, a, GET(14) + 0x5a827999, 13)
STEP(G, a, b, c, d, GET(3) + 0x5a827999, 3)
STEP(G, d, a, b, c, GET(7) + 0x5a827999, 5)
STEP(G, c, d, a, b, GET(11) + 0x5a827999, 9)
STEP(G, b, c, d, a, GET(15) + 0x5a827999, 13)
/* Round 3 */
STEP(H, a, b, c, d, GET(0) + 0x6ed9eba1, 3)
STEP(H, d, a, b, c, GET(8) + 0x6ed9eba1, 9)
STEP(H, c, d, a, b, GET(4) + 0x6ed9eba1, 11)
STEP(H, b, c, d, a, GET(12) + 0x6ed9eba1, 15)
STEP(H, a, b, c, d, GET(2) + 0x6ed9eba1, 3)
STEP(H, d, a, b, c, GET(10) + 0x6ed9eba1, 9)
STEP(H, c, d, a, b, GET(6) + 0x6ed9eba1, 11)
STEP(H, b, c, d, a, GET(14) + 0x6ed9eba1, 15)
STEP(H, a, b, c, d, GET(1) + 0x6ed9eba1, 3)
STEP(H, d, a, b, c, GET(9) + 0x6ed9eba1, 9)
STEP(H, c, d, a, b, GET(5) + 0x6ed9eba1, 11)
STEP(H, b, c, d, a, GET(13) + 0x6ed9eba1, 15)
STEP(H, a, b, c, d, GET(3) + 0x6ed9eba1, 3)
STEP(H, d, a, b, c, GET(11) + 0x6ed9eba1, 9)
STEP(H, c, d, a, b, GET(7) + 0x6ed9eba1, 11)
STEP(H, b, c, d, a, 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 void MD4_Init(MD4_CTX *ctx)
{
ctx->a = 0x67452301;
ctx->b = 0xefcdab89;
ctx->c = 0x98badcfe;
ctx->d = 0x10325476;
ctx->lo = 0;
ctx->hi = 0;
}
static void MD4_Update(MD4_CTX *ctx, const void *data, unsigned long size)
{
MD4_u32plus saved_lo;
unsigned long used;
saved_lo = ctx->lo;
ctx->lo = (saved_lo + size) & 0x1fffffff;
if(ctx->lo < saved_lo)
ctx->hi++;
ctx->hi += (MD4_u32plus)size >> 29;
used = saved_lo & 0x3f;
if(used) {
unsigned long available = 64 - used;
if(size < available) {
memcpy(&ctx->buffer[used], data, size);
return;
}
memcpy(&ctx->buffer[used], data, available);
data = (const unsigned char *)data + available;
size -= available;
body(ctx, ctx->buffer, 64);
}
if(size >= 64) {
data = body(ctx, data, size & ~(unsigned long)0x3f);
size &= 0x3f;
}
memcpy(ctx->buffer, data, size);
}
static void MD4_Final(unsigned char *result, 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);
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);
body(ctx, ctx->buffer, 64);
result[0] = curlx_ultouc((ctx->a)&0xff);
result[1] = curlx_ultouc((ctx->a >> 8)&0xff);
result[2] = curlx_ultouc((ctx->a >> 16)&0xff);
result[3] = curlx_ultouc(ctx->a >> 24);
result[4] = curlx_ultouc((ctx->b)&0xff);
result[5] = curlx_ultouc((ctx->b >> 8)&0xff);
result[6] = curlx_ultouc((ctx->b >> 16)&0xff);
result[7] = curlx_ultouc(ctx->b >> 24);
result[8] = curlx_ultouc((ctx->c)&0xff);
result[9] = curlx_ultouc((ctx->c >> 8)&0xff);
result[10] = curlx_ultouc((ctx->c >> 16)&0xff);
result[11] = curlx_ultouc(ctx->c >> 24);
result[12] = curlx_ultouc((ctx->d)&0xff);
result[13] = curlx_ultouc((ctx->d >> 8)&0xff);
result[14] = curlx_ultouc((ctx->d >> 16)&0xff);
result[15] = curlx_ultouc(ctx->d >> 24);
memset(ctx, 0, sizeof(*ctx));
}
#endif /* CRYPTO LIBS */
void Curl_md4it(unsigned char *output, const unsigned char *input,
const size_t len)
{
MD4_CTX ctx;
MD4_Init(&ctx);
MD4_Update(&ctx, input, curlx_uztoui(len));
MD4_Final(output, &ctx);
}
#endif /* CURL_DISABLE_CRYPTO_AUTH */
|