438 lines
13 KiB
C
438 lines
13 KiB
C
/*
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* RFC 1321 compliant MD5 implementation
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*
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* Copyright The Mbed TLS Contributors
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* The MD5 algorithm was designed by Ron Rivest in 1991.
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*
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* http://www.ietf.org/rfc/rfc1321.txt
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*/
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#include "common.h"
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#if defined(MBEDTLS_MD5_C)
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#include "mbedtls/md5.h"
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#include "mbedtls/platform_util.h"
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#include "mbedtls/error.h"
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#include <string.h>
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#include "mbedtls/platform.h"
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#if !defined(MBEDTLS_MD5_ALT)
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void mbedtls_md5_init(mbedtls_md5_context *ctx)
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{
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memset(ctx, 0, sizeof(mbedtls_md5_context));
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}
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void mbedtls_md5_free(mbedtls_md5_context *ctx)
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{
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if (ctx == NULL) {
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return;
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}
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mbedtls_platform_zeroize(ctx, sizeof(mbedtls_md5_context));
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}
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void mbedtls_md5_clone(mbedtls_md5_context *dst,
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const mbedtls_md5_context *src)
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{
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*dst = *src;
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}
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/*
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* MD5 context setup
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*/
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int mbedtls_md5_starts(mbedtls_md5_context *ctx)
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{
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ctx->total[0] = 0;
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ctx->total[1] = 0;
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ctx->state[0] = 0x67452301;
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ctx->state[1] = 0xEFCDAB89;
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ctx->state[2] = 0x98BADCFE;
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ctx->state[3] = 0x10325476;
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return 0;
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}
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#if !defined(MBEDTLS_MD5_PROCESS_ALT)
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int mbedtls_internal_md5_process(mbedtls_md5_context *ctx,
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const unsigned char data[64])
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{
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struct {
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uint32_t X[16], A, B, C, D;
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} local;
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local.X[0] = MBEDTLS_GET_UINT32_LE(data, 0);
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local.X[1] = MBEDTLS_GET_UINT32_LE(data, 4);
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local.X[2] = MBEDTLS_GET_UINT32_LE(data, 8);
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local.X[3] = MBEDTLS_GET_UINT32_LE(data, 12);
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local.X[4] = MBEDTLS_GET_UINT32_LE(data, 16);
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local.X[5] = MBEDTLS_GET_UINT32_LE(data, 20);
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local.X[6] = MBEDTLS_GET_UINT32_LE(data, 24);
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local.X[7] = MBEDTLS_GET_UINT32_LE(data, 28);
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local.X[8] = MBEDTLS_GET_UINT32_LE(data, 32);
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local.X[9] = MBEDTLS_GET_UINT32_LE(data, 36);
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local.X[10] = MBEDTLS_GET_UINT32_LE(data, 40);
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local.X[11] = MBEDTLS_GET_UINT32_LE(data, 44);
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local.X[12] = MBEDTLS_GET_UINT32_LE(data, 48);
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local.X[13] = MBEDTLS_GET_UINT32_LE(data, 52);
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local.X[14] = MBEDTLS_GET_UINT32_LE(data, 56);
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local.X[15] = MBEDTLS_GET_UINT32_LE(data, 60);
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#define S(x, n) \
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(((x) << (n)) | (((x) & 0xFFFFFFFF) >> (32 - (n))))
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#define P(a, b, c, d, k, s, t) \
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do \
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{ \
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(a) += F((b), (c), (d)) + local.X[(k)] + (t); \
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(a) = S((a), (s)) + (b); \
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} while (0)
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local.A = ctx->state[0];
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local.B = ctx->state[1];
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local.C = ctx->state[2];
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local.D = ctx->state[3];
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#define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
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P(local.A, local.B, local.C, local.D, 0, 7, 0xD76AA478);
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P(local.D, local.A, local.B, local.C, 1, 12, 0xE8C7B756);
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P(local.C, local.D, local.A, local.B, 2, 17, 0x242070DB);
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P(local.B, local.C, local.D, local.A, 3, 22, 0xC1BDCEEE);
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P(local.A, local.B, local.C, local.D, 4, 7, 0xF57C0FAF);
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P(local.D, local.A, local.B, local.C, 5, 12, 0x4787C62A);
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P(local.C, local.D, local.A, local.B, 6, 17, 0xA8304613);
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P(local.B, local.C, local.D, local.A, 7, 22, 0xFD469501);
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P(local.A, local.B, local.C, local.D, 8, 7, 0x698098D8);
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P(local.D, local.A, local.B, local.C, 9, 12, 0x8B44F7AF);
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P(local.C, local.D, local.A, local.B, 10, 17, 0xFFFF5BB1);
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P(local.B, local.C, local.D, local.A, 11, 22, 0x895CD7BE);
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P(local.A, local.B, local.C, local.D, 12, 7, 0x6B901122);
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P(local.D, local.A, local.B, local.C, 13, 12, 0xFD987193);
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P(local.C, local.D, local.A, local.B, 14, 17, 0xA679438E);
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P(local.B, local.C, local.D, local.A, 15, 22, 0x49B40821);
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#undef F
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#define F(x, y, z) ((y) ^ ((z) & ((x) ^ (y))))
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P(local.A, local.B, local.C, local.D, 1, 5, 0xF61E2562);
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P(local.D, local.A, local.B, local.C, 6, 9, 0xC040B340);
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P(local.C, local.D, local.A, local.B, 11, 14, 0x265E5A51);
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P(local.B, local.C, local.D, local.A, 0, 20, 0xE9B6C7AA);
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P(local.A, local.B, local.C, local.D, 5, 5, 0xD62F105D);
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P(local.D, local.A, local.B, local.C, 10, 9, 0x02441453);
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P(local.C, local.D, local.A, local.B, 15, 14, 0xD8A1E681);
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P(local.B, local.C, local.D, local.A, 4, 20, 0xE7D3FBC8);
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P(local.A, local.B, local.C, local.D, 9, 5, 0x21E1CDE6);
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P(local.D, local.A, local.B, local.C, 14, 9, 0xC33707D6);
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P(local.C, local.D, local.A, local.B, 3, 14, 0xF4D50D87);
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P(local.B, local.C, local.D, local.A, 8, 20, 0x455A14ED);
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P(local.A, local.B, local.C, local.D, 13, 5, 0xA9E3E905);
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P(local.D, local.A, local.B, local.C, 2, 9, 0xFCEFA3F8);
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P(local.C, local.D, local.A, local.B, 7, 14, 0x676F02D9);
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P(local.B, local.C, local.D, local.A, 12, 20, 0x8D2A4C8A);
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#undef F
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#define F(x, y, z) ((x) ^ (y) ^ (z))
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P(local.A, local.B, local.C, local.D, 5, 4, 0xFFFA3942);
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P(local.D, local.A, local.B, local.C, 8, 11, 0x8771F681);
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P(local.C, local.D, local.A, local.B, 11, 16, 0x6D9D6122);
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P(local.B, local.C, local.D, local.A, 14, 23, 0xFDE5380C);
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P(local.A, local.B, local.C, local.D, 1, 4, 0xA4BEEA44);
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P(local.D, local.A, local.B, local.C, 4, 11, 0x4BDECFA9);
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P(local.C, local.D, local.A, local.B, 7, 16, 0xF6BB4B60);
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P(local.B, local.C, local.D, local.A, 10, 23, 0xBEBFBC70);
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P(local.A, local.B, local.C, local.D, 13, 4, 0x289B7EC6);
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P(local.D, local.A, local.B, local.C, 0, 11, 0xEAA127FA);
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P(local.C, local.D, local.A, local.B, 3, 16, 0xD4EF3085);
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P(local.B, local.C, local.D, local.A, 6, 23, 0x04881D05);
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P(local.A, local.B, local.C, local.D, 9, 4, 0xD9D4D039);
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P(local.D, local.A, local.B, local.C, 12, 11, 0xE6DB99E5);
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P(local.C, local.D, local.A, local.B, 15, 16, 0x1FA27CF8);
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P(local.B, local.C, local.D, local.A, 2, 23, 0xC4AC5665);
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#undef F
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#define F(x, y, z) ((y) ^ ((x) | ~(z)))
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P(local.A, local.B, local.C, local.D, 0, 6, 0xF4292244);
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P(local.D, local.A, local.B, local.C, 7, 10, 0x432AFF97);
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P(local.C, local.D, local.A, local.B, 14, 15, 0xAB9423A7);
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P(local.B, local.C, local.D, local.A, 5, 21, 0xFC93A039);
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P(local.A, local.B, local.C, local.D, 12, 6, 0x655B59C3);
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P(local.D, local.A, local.B, local.C, 3, 10, 0x8F0CCC92);
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P(local.C, local.D, local.A, local.B, 10, 15, 0xFFEFF47D);
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P(local.B, local.C, local.D, local.A, 1, 21, 0x85845DD1);
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P(local.A, local.B, local.C, local.D, 8, 6, 0x6FA87E4F);
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P(local.D, local.A, local.B, local.C, 15, 10, 0xFE2CE6E0);
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P(local.C, local.D, local.A, local.B, 6, 15, 0xA3014314);
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P(local.B, local.C, local.D, local.A, 13, 21, 0x4E0811A1);
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P(local.A, local.B, local.C, local.D, 4, 6, 0xF7537E82);
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P(local.D, local.A, local.B, local.C, 11, 10, 0xBD3AF235);
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P(local.C, local.D, local.A, local.B, 2, 15, 0x2AD7D2BB);
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P(local.B, local.C, local.D, local.A, 9, 21, 0xEB86D391);
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#undef F
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ctx->state[0] += local.A;
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ctx->state[1] += local.B;
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ctx->state[2] += local.C;
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ctx->state[3] += local.D;
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/* Zeroise variables to clear sensitive data from memory. */
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mbedtls_platform_zeroize(&local, sizeof(local));
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return 0;
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}
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#endif /* !MBEDTLS_MD5_PROCESS_ALT */
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/*
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* MD5 process buffer
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*/
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int mbedtls_md5_update(mbedtls_md5_context *ctx,
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const unsigned char *input,
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size_t ilen)
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{
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int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
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size_t fill;
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uint32_t left;
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if (ilen == 0) {
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return 0;
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}
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left = ctx->total[0] & 0x3F;
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fill = 64 - left;
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ctx->total[0] += (uint32_t) ilen;
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ctx->total[0] &= 0xFFFFFFFF;
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if (ctx->total[0] < (uint32_t) ilen) {
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ctx->total[1]++;
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}
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if (left && ilen >= fill) {
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memcpy((void *) (ctx->buffer + left), input, fill);
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if ((ret = mbedtls_internal_md5_process(ctx, ctx->buffer)) != 0) {
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return ret;
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}
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input += fill;
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ilen -= fill;
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left = 0;
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}
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while (ilen >= 64) {
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if ((ret = mbedtls_internal_md5_process(ctx, input)) != 0) {
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return ret;
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}
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input += 64;
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ilen -= 64;
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}
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if (ilen > 0) {
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memcpy((void *) (ctx->buffer + left), input, ilen);
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}
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return 0;
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}
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/*
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* MD5 final digest
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*/
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int mbedtls_md5_finish(mbedtls_md5_context *ctx,
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unsigned char output[16])
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{
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int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
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uint32_t used;
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uint32_t high, low;
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/*
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* Add padding: 0x80 then 0x00 until 8 bytes remain for the length
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*/
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used = ctx->total[0] & 0x3F;
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ctx->buffer[used++] = 0x80;
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if (used <= 56) {
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/* Enough room for padding + length in current block */
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memset(ctx->buffer + used, 0, 56 - used);
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} else {
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/* We'll need an extra block */
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memset(ctx->buffer + used, 0, 64 - used);
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if ((ret = mbedtls_internal_md5_process(ctx, ctx->buffer)) != 0) {
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goto exit;
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}
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memset(ctx->buffer, 0, 56);
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}
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/*
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* Add message length
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*/
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high = (ctx->total[0] >> 29)
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| (ctx->total[1] << 3);
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low = (ctx->total[0] << 3);
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MBEDTLS_PUT_UINT32_LE(low, ctx->buffer, 56);
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MBEDTLS_PUT_UINT32_LE(high, ctx->buffer, 60);
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if ((ret = mbedtls_internal_md5_process(ctx, ctx->buffer)) != 0) {
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goto exit;
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}
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/*
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* Output final state
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*/
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MBEDTLS_PUT_UINT32_LE(ctx->state[0], output, 0);
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MBEDTLS_PUT_UINT32_LE(ctx->state[1], output, 4);
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MBEDTLS_PUT_UINT32_LE(ctx->state[2], output, 8);
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MBEDTLS_PUT_UINT32_LE(ctx->state[3], output, 12);
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ret = 0;
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exit:
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mbedtls_md5_free(ctx);
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return ret;
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}
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#endif /* !MBEDTLS_MD5_ALT */
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/*
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* output = MD5( input buffer )
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*/
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int mbedtls_md5(const unsigned char *input,
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size_t ilen,
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unsigned char output[16])
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{
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int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
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mbedtls_md5_context ctx;
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mbedtls_md5_init(&ctx);
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if ((ret = mbedtls_md5_starts(&ctx)) != 0) {
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goto exit;
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}
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if ((ret = mbedtls_md5_update(&ctx, input, ilen)) != 0) {
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goto exit;
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}
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if ((ret = mbedtls_md5_finish(&ctx, output)) != 0) {
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goto exit;
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}
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exit:
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mbedtls_md5_free(&ctx);
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return ret;
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}
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#if defined(MBEDTLS_SELF_TEST)
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/*
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* RFC 1321 test vectors
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*/
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static const unsigned char md5_test_buf[7][81] =
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{
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{ "" },
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{ "a" },
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{ "abc" },
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{ "message digest" },
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{ "abcdefghijklmnopqrstuvwxyz" },
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{ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" },
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{ "12345678901234567890123456789012345678901234567890123456789012345678901234567890" }
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};
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static const size_t md5_test_buflen[7] =
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{
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0, 1, 3, 14, 26, 62, 80
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};
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static const unsigned char md5_test_sum[7][16] =
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{
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{ 0xD4, 0x1D, 0x8C, 0xD9, 0x8F, 0x00, 0xB2, 0x04,
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0xE9, 0x80, 0x09, 0x98, 0xEC, 0xF8, 0x42, 0x7E },
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{ 0x0C, 0xC1, 0x75, 0xB9, 0xC0, 0xF1, 0xB6, 0xA8,
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0x31, 0xC3, 0x99, 0xE2, 0x69, 0x77, 0x26, 0x61 },
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{ 0x90, 0x01, 0x50, 0x98, 0x3C, 0xD2, 0x4F, 0xB0,
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0xD6, 0x96, 0x3F, 0x7D, 0x28, 0xE1, 0x7F, 0x72 },
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{ 0xF9, 0x6B, 0x69, 0x7D, 0x7C, 0xB7, 0x93, 0x8D,
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0x52, 0x5A, 0x2F, 0x31, 0xAA, 0xF1, 0x61, 0xD0 },
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{ 0xC3, 0xFC, 0xD3, 0xD7, 0x61, 0x92, 0xE4, 0x00,
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0x7D, 0xFB, 0x49, 0x6C, 0xCA, 0x67, 0xE1, 0x3B },
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{ 0xD1, 0x74, 0xAB, 0x98, 0xD2, 0x77, 0xD9, 0xF5,
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0xA5, 0x61, 0x1C, 0x2C, 0x9F, 0x41, 0x9D, 0x9F },
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{ 0x57, 0xED, 0xF4, 0xA2, 0x2B, 0xE3, 0xC9, 0x55,
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0xAC, 0x49, 0xDA, 0x2E, 0x21, 0x07, 0xB6, 0x7A }
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};
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/*
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* Checkup routine
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*/
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int mbedtls_md5_self_test(int verbose)
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{
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int i, ret = 0;
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unsigned char md5sum[16];
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for (i = 0; i < 7; i++) {
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if (verbose != 0) {
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mbedtls_printf(" MD5 test #%d: ", i + 1);
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}
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ret = mbedtls_md5(md5_test_buf[i], md5_test_buflen[i], md5sum);
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if (ret != 0) {
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goto fail;
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}
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if (memcmp(md5sum, md5_test_sum[i], 16) != 0) {
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ret = 1;
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goto fail;
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}
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if (verbose != 0) {
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mbedtls_printf("passed\n");
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}
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}
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if (verbose != 0) {
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mbedtls_printf("\n");
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|
}
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
if (verbose != 0) {
|
|
mbedtls_printf("failed\n");
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
#endif /* MBEDTLS_SELF_TEST */
|
|
|
|
#endif /* MBEDTLS_MD5_C */
|