Update networking layer w/ CURL and emscripten impl

2025-11-08 01:50:36 +11:00
parent a17925904d
commit f6874dc55a
4105 changed files with 694617 additions and 179 deletions
@@ -0,0 +1,653 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  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"
+
+#if (defined(USE_CURL_NTLM_CORE) && !defined(USE_WINDOWS_SSPI)) || \
+  !defined(CURL_DISABLE_DIGEST_AUTH)
+
+#include <string.h>
+#include <curl/curl.h>
+
+#include "curl_md5.h"
+#include "curl_hmac.h"
+#include "curlx/warnless.h"
+
+#ifdef USE_OPENSSL
+  #include <openssl/opensslconf.h>
+  #if !defined(OPENSSL_NO_MD5) && !defined(OPENSSL_NO_DEPRECATED_3_0)
+    #define USE_OPENSSL_MD5
+  #endif
+#endif
+
+#ifdef USE_WOLFSSL
+  #include <wolfssl/options.h>
+  #ifndef NO_MD5
+    #define USE_WOLFSSL_MD5
+  #endif
+#endif
+
+#ifdef USE_MBEDTLS
+  #include <mbedtls/version.h>
+  #if MBEDTLS_VERSION_NUMBER < 0x03020000
+    #error "mbedTLS 3.2.0 or later required"
+  #endif
+  #include <psa/crypto_config.h>
+  #if defined(PSA_WANT_ALG_MD5) && PSA_WANT_ALG_MD5  /* mbedTLS 4+ */
+    #define USE_MBEDTLS_MD5
+  #endif
+#endif
+
+#ifdef USE_GNUTLS
+#include <nettle/md5.h>
+#elif defined(USE_OPENSSL_MD5)
+#include <openssl/md5.h>
+#elif defined(USE_WOLFSSL_MD5)
+#include <wolfssl/openssl/md5.h>
+#elif defined(USE_MBEDTLS_MD5)
+#include <psa/crypto.h>
+#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))
+#define AN_APPLE_OS
+#include <CommonCrypto/CommonDigest.h>
+#elif defined(USE_WIN32_CRYPTO)
+#include <wincrypt.h>
+#endif
+
+/* The last 2 #include files should be in this order */
+#include "curl_memory.h"
+#include "memdebug.h"
+
+#ifdef USE_GNUTLS
+
+typedef struct md5_ctx my_md5_ctx;
+
+static CURLcode my_md5_init(void *ctx)
+{
+  md5_init(ctx);
+  return CURLE_OK;
+}
+
+static void my_md5_update(void *ctx,
+                          const unsigned char *input,
+                          unsigned int inputLen)
+{
+  md5_update(ctx, inputLen, input);
+}
+
+static void my_md5_final(unsigned char *digest, void *ctx)
+{
+  md5_digest(ctx, 16, digest);
+}
+
+#elif defined(USE_OPENSSL_MD5) || \
+  (defined(USE_WOLFSSL_MD5) && !defined(OPENSSL_COEXIST))
+
+typedef MD5_CTX my_md5_ctx;
+
+static CURLcode my_md5_init(void *ctx)
+{
+  if(!MD5_Init(ctx))
+    return CURLE_OUT_OF_MEMORY;
+
+  return CURLE_OK;
+}
+
+static void my_md5_update(void *ctx,
+                          const unsigned char *input,
+                          unsigned int len)
+{
+  (void)MD5_Update(ctx, input, len);
+}
+
+static void my_md5_final(unsigned char *digest, void *ctx)
+{
+  (void)MD5_Final(digest, ctx);
+}
+
+#elif defined(USE_WOLFSSL_MD5)
+
+typedef WOLFSSL_MD5_CTX my_md5_ctx;
+
+static CURLcode my_md5_init(void *ctx)
+{
+  if(!wolfSSL_MD5_Init(ctx))
+    return CURLE_OUT_OF_MEMORY;
+
+  return CURLE_OK;
+}
+
+static void my_md5_update(void *ctx,
+                          const unsigned char *input,
+                          unsigned int len)
+{
+  (void)wolfSSL_MD5_Update(ctx, input, len);
+}
+
+static void my_md5_final(unsigned char *digest, void *ctx)
+{
+  (void)wolfSSL_MD5_Final(digest, ctx);
+}
+
+#elif defined(USE_MBEDTLS_MD5)
+
+typedef psa_hash_operation_t my_md5_ctx;
+
+static CURLcode my_md5_init(void *ctx)
+{
+  memset(ctx, 0, sizeof(my_md5_ctx));
+  if(psa_hash_setup(ctx, PSA_ALG_MD5) != PSA_SUCCESS)
+    return CURLE_OUT_OF_MEMORY;
+  return CURLE_OK;
+}
+
+static void my_md5_update(void *ctx,
+                          const unsigned char *data,
+                          unsigned int length)
+{
+  (void)psa_hash_update(ctx, data, length);
+}
+
+static void my_md5_final(unsigned char *digest, void *ctx)
+{
+  size_t actual_length;
+  (void)psa_hash_finish(ctx, digest, 16, &actual_length);
+}
+
+#elif defined(AN_APPLE_OS)
+
+/* For Apple operating systems: CommonCrypto has the functions we need.
+   These functions are available on Tiger and later, as well as iOS 2.0
+   and later. If you are building for an older cat, well, sorry.
+
+   Declaring the functions as static like this seems to be a bit more
+   reliable than defining COMMON_DIGEST_FOR_OPENSSL on older cats. */
+#  define my_md5_ctx CC_MD5_CTX
+
+static CURLcode my_md5_init(void *ctx)
+{
+  if(!CC_MD5_Init(ctx))
+    return CURLE_OUT_OF_MEMORY;
+
+  return CURLE_OK;
+}
+
+static void my_md5_update(void *ctx,
+                          const unsigned char *input,
+                          unsigned int inputLen)
+{
+  CC_MD5_Update(ctx, input, inputLen);
+}
+
+static void my_md5_final(unsigned char *digest, void *ctx)
+{
+  CC_MD5_Final(digest, ctx);
+}
+
+#elif defined(USE_WIN32_CRYPTO)
+
+struct md5_ctx {
+  HCRYPTPROV hCryptProv;
+  HCRYPTHASH hHash;
+};
+typedef struct md5_ctx my_md5_ctx;
+
+static CURLcode my_md5_init(void *in)
+{
+  my_md5_ctx *ctx = (my_md5_ctx *)in;
+  if(!CryptAcquireContext(&ctx->hCryptProv, NULL, NULL, PROV_RSA_FULL,
+                          CRYPT_VERIFYCONTEXT | CRYPT_SILENT))
+    return CURLE_OUT_OF_MEMORY;
+
+  if(!CryptCreateHash(ctx->hCryptProv, CALG_MD5, 0, 0, &ctx->hHash)) {
+    CryptReleaseContext(ctx->hCryptProv, 0);
+    ctx->hCryptProv = 0;
+    return CURLE_FAILED_INIT;
+  }
+
+  return CURLE_OK;
+}
+
+static void my_md5_update(void *in,
+                          const unsigned char *input,
+                          unsigned int inputLen)
+{
+  my_md5_ctx *ctx = in;
+#ifdef __MINGW32CE__
+  CryptHashData(ctx->hHash, (BYTE *)CURL_UNCONST(input), inputLen, 0);
+#else
+  CryptHashData(ctx->hHash, (const BYTE *)input, inputLen, 0);
+#endif
+}
+
+static void my_md5_final(unsigned char *digest, void *in)
+{
+  my_md5_ctx *ctx = (my_md5_ctx *)in;
+  unsigned long length = 0;
+  CryptGetHashParam(ctx->hHash, HP_HASHVAL, NULL, &length, 0);
+  if(length == 16)
+    CryptGetHashParam(ctx->hHash, HP_HASHVAL, digest, &length, 0);
+  if(ctx->hHash)
+    CryptDestroyHash(ctx->hHash);
+  if(ctx->hCryptProv)
+    CryptReleaseContext(ctx->hCryptProv, 0);
+}
+
+#else
+
+/* When no other crypto library is available we use this code segment */
+
+/*
+ * This is an OpenSSL-compatible implementation of the RSA Data Security, Inc.
+ * MD5 Message-Digest Algorithm (RFC 1321).
+ *
+ * Homepage:
+ https://openwall.info/wiki/people/solar/software/public-domain-source-code/md5
+ *
+ * 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".)
+ */
+
+/* Any 32-bit or wider unsigned integer data type will do */
+typedef unsigned int MD5_u32plus;
+
+struct md5_ctx {
+  MD5_u32plus lo, hi;
+  MD5_u32plus a, b, c, d;
+  unsigned char buffer[64];
+  MD5_u32plus block[16];
+};
+typedef struct md5_ctx my_md5_ctx;
+
+static CURLcode my_md5_init(void *ctx);
+static void my_md5_update(void *ctx, const unsigned char *data,
+                          unsigned int size);
+static void my_md5_final(unsigned char *result, void *ctx);
+
+/*
+ * The basic MD5 functions.
+ *
+ * F and G are optimized compared to their RFC 1321 definitions for
+ * architectures that lack an AND-NOT instruction, just like in Colin Plumb's
+ * implementation.
+ */
+#define MD5_F(x, y, z)                  ((z) ^ ((x) & ((y) ^ (z))))
+#define MD5_G(x, y, z)                  ((y) ^ ((z) & ((x) ^ (y))))
+#define MD5_H(x, y, z)                  (((x) ^ (y)) ^ (z))
+#define MD5_H2(x, y, z)                 ((x) ^ ((y) ^ (z)))
+#define MD5_I(x, y, z)                  ((y) ^ ((x) | ~(z)))
+
+/*
+ * The MD5 transformation for all four rounds.
+ */
+#define MD5_STEP(f, a, b, c, d, x, t, s) \
+        (a) += f((b), (c), (d)) + (x) + (t); \
+        (a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s)))); \
+        (a) += (b);
+
+/*
+ * 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
+ * does not work.
+ */
+#if defined(__i386__) || defined(__x86_64__) || defined(__vax__)
+#define MD5_SET(n) \
+        (*(const MD5_u32plus *)(const void *)&ptr[(n) * 4])
+#define MD5_GET(n) \
+        MD5_SET(n)
+#else
+#define MD5_SET(n) \
+        (ctx->block[(n)] = \
+        (MD5_u32plus)ptr[(n) * 4] | \
+        ((MD5_u32plus)ptr[(n) * 4 + 1] << 8) | \
+        ((MD5_u32plus)ptr[(n) * 4 + 2] << 16) | \
+        ((MD5_u32plus)ptr[(n) * 4 + 3] << 24))
+#define MD5_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_md5_body(my_md5_ctx *ctx,
+                               const void *data, unsigned long size)
+{
+  const unsigned char *ptr;
+  MD5_u32plus a, b, c, d;
+
+  ptr = (const unsigned char *)data;
+
+  a = ctx->a;
+  b = ctx->b;
+  c = ctx->c;
+  d = ctx->d;
+
+  do {
+    MD5_u32plus saved_a, saved_b, saved_c, saved_d;
+
+    saved_a = a;
+    saved_b = b;
+    saved_c = c;
+    saved_d = d;
+
+    /* Round 1 */
+    MD5_STEP(MD5_F, a, b, c, d, MD5_SET(0), 0xd76aa478, 7)
+    MD5_STEP(MD5_F, d, a, b, c, MD5_SET(1), 0xe8c7b756, 12)
+    MD5_STEP(MD5_F, c, d, a, b, MD5_SET(2), 0x242070db, 17)
+    MD5_STEP(MD5_F, b, c, d, a, MD5_SET(3), 0xc1bdceee, 22)
+    MD5_STEP(MD5_F, a, b, c, d, MD5_SET(4), 0xf57c0faf, 7)
+    MD5_STEP(MD5_F, d, a, b, c, MD5_SET(5), 0x4787c62a, 12)
+    MD5_STEP(MD5_F, c, d, a, b, MD5_SET(6), 0xa8304613, 17)
+    MD5_STEP(MD5_F, b, c, d, a, MD5_SET(7), 0xfd469501, 22)
+    MD5_STEP(MD5_F, a, b, c, d, MD5_SET(8), 0x698098d8, 7)
+    MD5_STEP(MD5_F, d, a, b, c, MD5_SET(9), 0x8b44f7af, 12)
+    MD5_STEP(MD5_F, c, d, a, b, MD5_SET(10), 0xffff5bb1, 17)
+    MD5_STEP(MD5_F, b, c, d, a, MD5_SET(11), 0x895cd7be, 22)
+    MD5_STEP(MD5_F, a, b, c, d, MD5_SET(12), 0x6b901122, 7)
+    MD5_STEP(MD5_F, d, a, b, c, MD5_SET(13), 0xfd987193, 12)
+    MD5_STEP(MD5_F, c, d, a, b, MD5_SET(14), 0xa679438e, 17)
+    MD5_STEP(MD5_F, b, c, d, a, MD5_SET(15), 0x49b40821, 22)
+
+    /* Round 2 */
+    MD5_STEP(MD5_G, a, b, c, d, MD5_GET(1), 0xf61e2562, 5)
+    MD5_STEP(MD5_G, d, a, b, c, MD5_GET(6), 0xc040b340, 9)
+    MD5_STEP(MD5_G, c, d, a, b, MD5_GET(11), 0x265e5a51, 14)
+    MD5_STEP(MD5_G, b, c, d, a, MD5_GET(0), 0xe9b6c7aa, 20)
+    MD5_STEP(MD5_G, a, b, c, d, MD5_GET(5), 0xd62f105d, 5)
+    MD5_STEP(MD5_G, d, a, b, c, MD5_GET(10), 0x02441453, 9)
+    MD5_STEP(MD5_G, c, d, a, b, MD5_GET(15), 0xd8a1e681, 14)
+    MD5_STEP(MD5_G, b, c, d, a, MD5_GET(4), 0xe7d3fbc8, 20)
+    MD5_STEP(MD5_G, a, b, c, d, MD5_GET(9), 0x21e1cde6, 5)
+    MD5_STEP(MD5_G, d, a, b, c, MD5_GET(14), 0xc33707d6, 9)
+    MD5_STEP(MD5_G, c, d, a, b, MD5_GET(3), 0xf4d50d87, 14)
+    MD5_STEP(MD5_G, b, c, d, a, MD5_GET(8), 0x455a14ed, 20)
+    MD5_STEP(MD5_G, a, b, c, d, MD5_GET(13), 0xa9e3e905, 5)
+    MD5_STEP(MD5_G, d, a, b, c, MD5_GET(2), 0xfcefa3f8, 9)
+    MD5_STEP(MD5_G, c, d, a, b, MD5_GET(7), 0x676f02d9, 14)
+    MD5_STEP(MD5_G, b, c, d, a, MD5_GET(12), 0x8d2a4c8a, 20)
+
+    /* Round 3 */
+    MD5_STEP(MD5_H, a, b, c, d, MD5_GET(5), 0xfffa3942, 4)
+    MD5_STEP(MD5_H2, d, a, b, c, MD5_GET(8), 0x8771f681, 11)
+    MD5_STEP(MD5_H, c, d, a, b, MD5_GET(11), 0x6d9d6122, 16)
+    MD5_STEP(MD5_H2, b, c, d, a, MD5_GET(14), 0xfde5380c, 23)
+    MD5_STEP(MD5_H, a, b, c, d, MD5_GET(1), 0xa4beea44, 4)
+    MD5_STEP(MD5_H2, d, a, b, c, MD5_GET(4), 0x4bdecfa9, 11)
+    MD5_STEP(MD5_H, c, d, a, b, MD5_GET(7), 0xf6bb4b60, 16)
+    MD5_STEP(MD5_H2, b, c, d, a, MD5_GET(10), 0xbebfbc70, 23)
+    MD5_STEP(MD5_H, a, b, c, d, MD5_GET(13), 0x289b7ec6, 4)
+    MD5_STEP(MD5_H2, d, a, b, c, MD5_GET(0), 0xeaa127fa, 11)
+    MD5_STEP(MD5_H, c, d, a, b, MD5_GET(3), 0xd4ef3085, 16)
+    MD5_STEP(MD5_H2, b, c, d, a, MD5_GET(6), 0x04881d05, 23)
+    MD5_STEP(MD5_H, a, b, c, d, MD5_GET(9), 0xd9d4d039, 4)
+    MD5_STEP(MD5_H2, d, a, b, c, MD5_GET(12), 0xe6db99e5, 11)
+    MD5_STEP(MD5_H, c, d, a, b, MD5_GET(15), 0x1fa27cf8, 16)
+    MD5_STEP(MD5_H2, b, c, d, a, MD5_GET(2), 0xc4ac5665, 23)
+
+    /* Round 4 */
+    MD5_STEP(MD5_I, a, b, c, d, MD5_GET(0), 0xf4292244, 6)
+    MD5_STEP(MD5_I, d, a, b, c, MD5_GET(7), 0x432aff97, 10)
+    MD5_STEP(MD5_I, c, d, a, b, MD5_GET(14), 0xab9423a7, 15)
+    MD5_STEP(MD5_I, b, c, d, a, MD5_GET(5), 0xfc93a039, 21)
+    MD5_STEP(MD5_I, a, b, c, d, MD5_GET(12), 0x655b59c3, 6)
+    MD5_STEP(MD5_I, d, a, b, c, MD5_GET(3), 0x8f0ccc92, 10)
+    MD5_STEP(MD5_I, c, d, a, b, MD5_GET(10), 0xffeff47d, 15)
+    MD5_STEP(MD5_I, b, c, d, a, MD5_GET(1), 0x85845dd1, 21)
+    MD5_STEP(MD5_I, a, b, c, d, MD5_GET(8), 0x6fa87e4f, 6)
+    MD5_STEP(MD5_I, d, a, b, c, MD5_GET(15), 0xfe2ce6e0, 10)
+    MD5_STEP(MD5_I, c, d, a, b, MD5_GET(6), 0xa3014314, 15)
+    MD5_STEP(MD5_I, b, c, d, a, MD5_GET(13), 0x4e0811a1, 21)
+    MD5_STEP(MD5_I, a, b, c, d, MD5_GET(4), 0xf7537e82, 6)
+    MD5_STEP(MD5_I, d, a, b, c, MD5_GET(11), 0xbd3af235, 10)
+    MD5_STEP(MD5_I, c, d, a, b, MD5_GET(2), 0x2ad7d2bb, 15)
+    MD5_STEP(MD5_I, b, c, d, a, MD5_GET(9), 0xeb86d391, 21)
+
+    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 CURLcode my_md5_init(void *in)
+{
+  my_md5_ctx *ctx = (my_md5_ctx *)in;
+  ctx->a = 0x67452301;
+  ctx->b = 0xefcdab89;
+  ctx->c = 0x98badcfe;
+  ctx->d = 0x10325476;
+
+  ctx->lo = 0;
+  ctx->hi = 0;
+
+  return CURLE_OK;
+}
+
+static void my_md5_update(void *in, const unsigned char *data,
+                          unsigned int size)
+{
+  MD5_u32plus saved_lo;
+  unsigned int used;
+  my_md5_ctx *ctx = (my_md5_ctx *)in;
+
+  saved_lo = ctx->lo;
+  ctx->lo = (saved_lo + size) & 0x1fffffff;
+  if(ctx->lo < saved_lo)
+    ctx->hi++;
+  ctx->hi += (MD5_u32plus)size >> 29;
+
+  used = saved_lo & 0x3f;
+
+  if(used) {
+    unsigned int 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;
+    my_md5_body(ctx, ctx->buffer, 64);
+  }
+
+  if(size >= 64) {
+    data = my_md5_body(ctx, data, size & ~(unsigned long)0x3f);
+    size &= 0x3f;
+  }
+
+  memcpy(ctx->buffer, data, size);
+}
+
+static void my_md5_final(unsigned char *result, void *in)
+{
+  unsigned int used, available;
+  my_md5_ctx *ctx = (my_md5_ctx *)in;
+
+  used = ctx->lo & 0x3f;
+
+  ctx->buffer[used++] = 0x80;
+
+  available = 64 - used;
+
+  if(available < 8) {
+    memset(&ctx->buffer[used], 0, available);
+    my_md5_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);
+  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_md5_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 */
+
+const struct HMAC_params Curl_HMAC_MD5 = {
+  my_md5_init,        /* Hash initialization function. */
+  my_md5_update,      /* Hash update function. */
+  my_md5_final,       /* Hash computation end function. */
+  sizeof(my_md5_ctx), /* Size of hash context structure. */
+  64,                 /* Maximum key length. */
+  16                  /* Result size. */
+};
+
+const struct MD5_params Curl_DIGEST_MD5 = {
+  my_md5_init,        /* Digest initialization function */
+  my_md5_update,      /* Digest update function */
+  my_md5_final,       /* Digest computation end function */
+  sizeof(my_md5_ctx), /* Size of digest context struct */
+  16                  /* Result size */
+};
+
+/*
+ * @unittest: 1601
+ * Returns CURLE_OK on success.
+ */
+CURLcode Curl_md5it(unsigned char *outbuffer, const unsigned char *input,
+                    const size_t len)
+{
+  CURLcode result;
+  my_md5_ctx ctx;
+
+  result = my_md5_init(&ctx);
+  if(!result) {
+    my_md5_update(&ctx, input, curlx_uztoui(len));
+    my_md5_final(outbuffer, &ctx);
+  }
+  return result;
+}
+
+struct MD5_context *Curl_MD5_init(const struct MD5_params *md5params)
+{
+  struct MD5_context *ctxt;
+
+  /* Create MD5 context */
+  ctxt = malloc(sizeof(*ctxt));
+
+  if(!ctxt)
+    return ctxt;
+
+  ctxt->md5_hashctx = malloc(md5params->md5_ctxtsize);
+
+  if(!ctxt->md5_hashctx) {
+    free(ctxt);
+    return NULL;
+  }
+
+  ctxt->md5_hash = md5params;
+
+  if((*md5params->md5_init_func)(ctxt->md5_hashctx)) {
+    free(ctxt->md5_hashctx);
+    free(ctxt);
+    return NULL;
+  }
+
+  return ctxt;
+}
+
+CURLcode Curl_MD5_update(struct MD5_context *context,
+                         const unsigned char *data,
+                         unsigned int len)
+{
+  (*context->md5_hash->md5_update_func)(context->md5_hashctx, data, len);
+
+  return CURLE_OK;
+}
+
+CURLcode Curl_MD5_final(struct MD5_context *context, unsigned char *result)
+{
+  (*context->md5_hash->md5_final_func)(result, context->md5_hashctx);
+
+  free(context->md5_hashctx);
+  free(context);
+
+  return CURLE_OK;
+}
+
+#endif /* Using NTLM (without SSPI) || Digest */