/* * RFC 1321 compliant MD5 implementation * * Copyright The Mbed TLS Contributors * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); you may * not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* * The MD5 algorithm was designed by Ron Rivest in 1991. * * http://www.ietf.org/rfc/rfc1321.txt */ #include "common.h" #if defined(MBEDTLS_MD5_C) #include "mbedtls/md5.h" #include "mbedtls/platform_util.h" #include "mbedtls/error.h" #include <string.h> #if defined(MBEDTLS_SELF_TEST) #if defined(MBEDTLS_PLATFORM_C) #include "mbedtls/platform.h" #else #include <stdio.h> #define mbedtls_printf printf #endif /* MBEDTLS_PLATFORM_C */ #endif /* MBEDTLS_SELF_TEST */ #if !defined(MBEDTLS_MD5_ALT) void mbedtls_md5_init( mbedtls_md5_context *ctx ) { memset( ctx, 0, sizeof( mbedtls_md5_context ) ); } void mbedtls_md5_free( mbedtls_md5_context *ctx ) { if( ctx == NULL ) return; mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md5_context ) ); } void mbedtls_md5_clone( mbedtls_md5_context *dst, const mbedtls_md5_context *src ) { *dst = *src; } /* * MD5 context setup */ int mbedtls_md5_starts_ret( mbedtls_md5_context *ctx ) { ctx->total[0] = 0; ctx->total[1] = 0; ctx->state[0] = 0x67452301; ctx->state[1] = 0xEFCDAB89; ctx->state[2] = 0x98BADCFE; ctx->state[3] = 0x10325476; return( 0 ); } #if !defined(MBEDTLS_DEPRECATED_REMOVED) void mbedtls_md5_starts( mbedtls_md5_context *ctx ) { mbedtls_md5_starts_ret( ctx ); } #endif #if !defined(MBEDTLS_MD5_PROCESS_ALT) int mbedtls_internal_md5_process( mbedtls_md5_context *ctx, const unsigned char data[64] ) { struct { uint32_t X[16], A, B, C, D; } local; local.X[ 0] = MBEDTLS_GET_UINT32_LE( data, 0 ); local.X[ 1] = MBEDTLS_GET_UINT32_LE( data, 4 ); local.X[ 2] = MBEDTLS_GET_UINT32_LE( data, 8 ); local.X[ 3] = MBEDTLS_GET_UINT32_LE( data, 12 ); local.X[ 4] = MBEDTLS_GET_UINT32_LE( data, 16 ); local.X[ 5] = MBEDTLS_GET_UINT32_LE( data, 20 ); local.X[ 6] = MBEDTLS_GET_UINT32_LE( data, 24 ); local.X[ 7] = MBEDTLS_GET_UINT32_LE( data, 28 ); local.X[ 8] = MBEDTLS_GET_UINT32_LE( data, 32 ); local.X[ 9] = MBEDTLS_GET_UINT32_LE( data, 36 ); local.X[10] = MBEDTLS_GET_UINT32_LE( data, 40 ); local.X[11] = MBEDTLS_GET_UINT32_LE( data, 44 ); local.X[12] = MBEDTLS_GET_UINT32_LE( data, 48 ); local.X[13] = MBEDTLS_GET_UINT32_LE( data, 52 ); local.X[14] = MBEDTLS_GET_UINT32_LE( data, 56 ); local.X[15] = MBEDTLS_GET_UINT32_LE( data, 60 ); #define S(x,n) \ ( ( (x) << (n) ) | ( ( (x) & 0xFFFFFFFF) >> ( 32 - (n) ) ) ) #define P(a,b,c,d,k,s,t) \ do \ { \ (a) += F((b),(c),(d)) + local.X[(k)] + (t); \ (a) = S((a),(s)) + (b); \ } while( 0 ) local.A = ctx->state[0]; local.B = ctx->state[1]; local.C = ctx->state[2]; local.D = ctx->state[3]; #define F(x,y,z) ((z) ^ ((x) & ((y) ^ (z)))) P( local.A, local.B, local.C, local.D, 0, 7, 0xD76AA478 ); P( local.D, local.A, local.B, local.C, 1, 12, 0xE8C7B756 ); P( local.C, local.D, local.A, local.B, 2, 17, 0x242070DB ); P( local.B, local.C, local.D, local.A, 3, 22, 0xC1BDCEEE ); P( local.A, local.B, local.C, local.D, 4, 7, 0xF57C0FAF ); P( local.D, local.A, local.B, local.C, 5, 12, 0x4787C62A ); P( local.C, local.D, local.A, local.B, 6, 17, 0xA8304613 ); P( local.B, local.C, local.D, local.A, 7, 22, 0xFD469501 ); P( local.A, local.B, local.C, local.D, 8, 7, 0x698098D8 ); P( local.D, local.A, local.B, local.C, 9, 12, 0x8B44F7AF ); P( local.C, local.D, local.A, local.B, 10, 17, 0xFFFF5BB1 ); P( local.B, local.C, local.D, local.A, 11, 22, 0x895CD7BE ); P( local.A, local.B, local.C, local.D, 12, 7, 0x6B901122 ); P( local.D, local.A, local.B, local.C, 13, 12, 0xFD987193 ); P( local.C, local.D, local.A, local.B, 14, 17, 0xA679438E ); P( local.B, local.C, local.D, local.A, 15, 22, 0x49B40821 ); #undef F #define F(x,y,z) ((y) ^ ((z) & ((x) ^ (y)))) P( local.A, local.B, local.C, local.D, 1, 5, 0xF61E2562 ); P( local.D, local.A, local.B, local.C, 6, 9, 0xC040B340 ); P( local.C, local.D, local.A, local.B, 11, 14, 0x265E5A51 ); P( local.B, local.C, local.D, local.A, 0, 20, 0xE9B6C7AA ); P( local.A, local.B, local.C, local.D, 5, 5, 0xD62F105D ); P( local.D, local.A, local.B, local.C, 10, 9, 0x02441453 ); P( local.C, local.D, local.A, local.B, 15, 14, 0xD8A1E681 ); P( local.B, local.C, local.D, local.A, 4, 20, 0xE7D3FBC8 ); P( local.A, local.B, local.C, local.D, 9, 5, 0x21E1CDE6 ); P( local.D, local.A, local.B, local.C, 14, 9, 0xC33707D6 ); P( local.C, local.D, local.A, local.B, 3, 14, 0xF4D50D87 ); P( local.B, local.C, local.D, local.A, 8, 20, 0x455A14ED ); P( local.A, local.B, local.C, local.D, 13, 5, 0xA9E3E905 ); P( local.D, local.A, local.B, local.C, 2, 9, 0xFCEFA3F8 ); P( local.C, local.D, local.A, local.B, 7, 14, 0x676F02D9 ); P( local.B, local.C, local.D, local.A, 12, 20, 0x8D2A4C8A ); #undef F #define F(x,y,z) ((x) ^ (y) ^ (z)) P( local.A, local.B, local.C, local.D, 5, 4, 0xFFFA3942 ); P( local.D, local.A, local.B, local.C, 8, 11, 0x8771F681 ); P( local.C, local.D, local.A, local.B, 11, 16, 0x6D9D6122 ); P( local.B, local.C, local.D, local.A, 14, 23, 0xFDE5380C ); P( local.A, local.B, local.C, local.D, 1, 4, 0xA4BEEA44 ); P( local.D, local.A, local.B, local.C, 4, 11, 0x4BDECFA9 ); P( local.C, local.D, local.A, local.B, 7, 16, 0xF6BB4B60 ); P( local.B, local.C, local.D, local.A, 10, 23, 0xBEBFBC70 ); P( local.A, local.B, local.C, local.D, 13, 4, 0x289B7EC6 ); P( local.D, local.A, local.B, local.C, 0, 11, 0xEAA127FA ); P( local.C, local.D, local.A, local.B, 3, 16, 0xD4EF3085 ); P( local.B, local.C, local.D, local.A, 6, 23, 0x04881D05 ); P( local.A, local.B, local.C, local.D, 9, 4, 0xD9D4D039 ); P( local.D, local.A, local.B, local.C, 12, 11, 0xE6DB99E5 ); P( local.C, local.D, local.A, local.B, 15, 16, 0x1FA27CF8 ); P( local.B, local.C, local.D, local.A, 2, 23, 0xC4AC5665 ); #undef F #define F(x,y,z) ((y) ^ ((x) | ~(z))) P( local.A, local.B, local.C, local.D, 0, 6, 0xF4292244 ); P( local.D, local.A, local.B, local.C, 7, 10, 0x432AFF97 ); P( local.C, local.D, local.A, local.B, 14, 15, 0xAB9423A7 ); P( local.B, local.C, local.D, local.A, 5, 21, 0xFC93A039 ); P( local.A, local.B, local.C, local.D, 12, 6, 0x655B59C3 ); P( local.D, local.A, local.B, local.C, 3, 10, 0x8F0CCC92 ); P( local.C, local.D, local.A, local.B, 10, 15, 0xFFEFF47D ); P( local.B, local.C, local.D, local.A, 1, 21, 0x85845DD1 ); P( local.A, local.B, local.C, local.D, 8, 6, 0x6FA87E4F ); P( local.D, local.A, local.B, local.C, 15, 10, 0xFE2CE6E0 ); P( local.C, local.D, local.A, local.B, 6, 15, 0xA3014314 ); P( local.B, local.C, local.D, local.A, 13, 21, 0x4E0811A1 ); P( local.A, local.B, local.C, local.D, 4, 6, 0xF7537E82 ); P( local.D, local.A, local.B, local.C, 11, 10, 0xBD3AF235 ); P( local.C, local.D, local.A, local.B, 2, 15, 0x2AD7D2BB ); P( local.B, local.C, local.D, local.A, 9, 21, 0xEB86D391 ); #undef F ctx->state[0] += local.A; ctx->state[1] += local.B; ctx->state[2] += local.C; ctx->state[3] += local.D; /* Zeroise variables to clear sensitive data from memory. */ mbedtls_platform_zeroize( &local, sizeof( local ) ); return( 0 ); } #if !defined(MBEDTLS_DEPRECATED_REMOVED) void mbedtls_md5_process( mbedtls_md5_context *ctx, const unsigned char data[64] ) { mbedtls_internal_md5_process( ctx, data ); } #endif #endif /* !MBEDTLS_MD5_PROCESS_ALT */ /* * MD5 process buffer */ int mbedtls_md5_update_ret( mbedtls_md5_context *ctx, const unsigned char *input, size_t ilen ) { int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; size_t fill; uint32_t left; if( ilen == 0 ) return( 0 ); left = ctx->total[0] & 0x3F; fill = 64 - left; ctx->total[0] += (uint32_t) ilen; ctx->total[0] &= 0xFFFFFFFF; if( ctx->total[0] < (uint32_t) ilen ) ctx->total[1]++; if( left && ilen >= fill ) { memcpy( (void *) (ctx->buffer + left), input, fill ); if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 ) return( ret ); input += fill; ilen -= fill; left = 0; } while( ilen >= 64 ) { if( ( ret = mbedtls_internal_md5_process( ctx, input ) ) != 0 ) return( ret ); input += 64; ilen -= 64; } if( ilen > 0 ) { memcpy( (void *) (ctx->buffer + left), input, ilen ); } return( 0 ); } #if !defined(MBEDTLS_DEPRECATED_REMOVED) void mbedtls_md5_update( mbedtls_md5_context *ctx, const unsigned char *input, size_t ilen ) { mbedtls_md5_update_ret( ctx, input, ilen ); } #endif /* * MD5 final digest */ int mbedtls_md5_finish_ret( mbedtls_md5_context *ctx, unsigned char output[16] ) { int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; uint32_t used; uint32_t high, low; /* * Add padding: 0x80 then 0x00 until 8 bytes remain for the length */ used = ctx->total[0] & 0x3F; ctx->buffer[used++] = 0x80; if( used <= 56 ) { /* Enough room for padding + length in current block */ memset( ctx->buffer + used, 0, 56 - used ); } else { /* We'll need an extra block */ memset( ctx->buffer + used, 0, 64 - used ); if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 ) return( ret ); memset( ctx->buffer, 0, 56 ); } /* * Add message length */ high = ( ctx->total[0] >> 29 ) | ( ctx->total[1] << 3 ); low = ( ctx->total[0] << 3 ); MBEDTLS_PUT_UINT32_LE( low, ctx->buffer, 56 ); MBEDTLS_PUT_UINT32_LE( high, ctx->buffer, 60 ); if( ( ret = mbedtls_internal_md5_process( ctx, ctx->buffer ) ) != 0 ) return( ret ); /* * Output final state */ MBEDTLS_PUT_UINT32_LE( ctx->state[0], output, 0 ); MBEDTLS_PUT_UINT32_LE( ctx->state[1], output, 4 ); MBEDTLS_PUT_UINT32_LE( ctx->state[2], output, 8 ); MBEDTLS_PUT_UINT32_LE( ctx->state[3], output, 12 ); return( 0 ); } #if !defined(MBEDTLS_DEPRECATED_REMOVED) void mbedtls_md5_finish( mbedtls_md5_context *ctx, unsigned char output[16] ) { mbedtls_md5_finish_ret( ctx, output ); } #endif #endif /* !MBEDTLS_MD5_ALT */ /* * output = MD5( input buffer ) */ int mbedtls_md5_ret( const unsigned char *input, size_t ilen, unsigned char output[16] ) { int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; mbedtls_md5_context ctx; mbedtls_md5_init( &ctx ); if( ( ret = mbedtls_md5_starts_ret( &ctx ) ) != 0 ) goto exit; if( ( ret = mbedtls_md5_update_ret( &ctx, input, ilen ) ) != 0 ) goto exit; if( ( ret = mbedtls_md5_finish_ret( &ctx, output ) ) != 0 ) goto exit; exit: mbedtls_md5_free( &ctx ); return( ret ); } #if !defined(MBEDTLS_DEPRECATED_REMOVED) void mbedtls_md5( const unsigned char *input, size_t ilen, unsigned char output[16] ) { mbedtls_md5_ret( input, ilen, output ); } #endif #if defined(MBEDTLS_SELF_TEST) /* * RFC 1321 test vectors */ static const unsigned char md5_test_buf[7][81] = { { "" }, { "a" }, { "abc" }, { "message digest" }, { "abcdefghijklmnopqrstuvwxyz" }, { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" }, { "12345678901234567890123456789012345678901234567890123456789012345678901234567890" } }; static const size_t md5_test_buflen[7] = { 0, 1, 3, 14, 26, 62, 80 }; static const unsigned char md5_test_sum[7][16] = { { 0xD4, 0x1D, 0x8C, 0xD9, 0x8F, 0x00, 0xB2, 0x04, 0xE9, 0x80, 0x09, 0x98, 0xEC, 0xF8, 0x42, 0x7E }, { 0x0C, 0xC1, 0x75, 0xB9, 0xC0, 0xF1, 0xB6, 0xA8, 0x31, 0xC3, 0x99, 0xE2, 0x69, 0x77, 0x26, 0x61 }, { 0x90, 0x01, 0x50, 0x98, 0x3C, 0xD2, 0x4F, 0xB0, 0xD6, 0x96, 0x3F, 0x7D, 0x28, 0xE1, 0x7F, 0x72 }, { 0xF9, 0x6B, 0x69, 0x7D, 0x7C, 0xB7, 0x93, 0x8D, 0x52, 0x5A, 0x2F, 0x31, 0xAA, 0xF1, 0x61, 0xD0 }, { 0xC3, 0xFC, 0xD3, 0xD7, 0x61, 0x92, 0xE4, 0x00, 0x7D, 0xFB, 0x49, 0x6C, 0xCA, 0x67, 0xE1, 0x3B }, { 0xD1, 0x74, 0xAB, 0x98, 0xD2, 0x77, 0xD9, 0xF5, 0xA5, 0x61, 0x1C, 0x2C, 0x9F, 0x41, 0x9D, 0x9F }, { 0x57, 0xED, 0xF4, 0xA2, 0x2B, 0xE3, 0xC9, 0x55, 0xAC, 0x49, 0xDA, 0x2E, 0x21, 0x07, 0xB6, 0x7A } }; /* * Checkup routine */ int mbedtls_md5_self_test( int verbose ) { int i, ret = 0; unsigned char md5sum[16]; for( i = 0; i < 7; i++ ) { if( verbose != 0 ) mbedtls_printf( " MD5 test #%d: ", i + 1 ); ret = mbedtls_md5_ret( md5_test_buf[i], md5_test_buflen[i], md5sum ); if( ret != 0 ) goto fail; if( memcmp( md5sum, md5_test_sum[i], 16 ) != 0 ) { ret = 1; goto fail; } if( verbose != 0 ) mbedtls_printf( "passed\n" ); } if( verbose != 0 ) mbedtls_printf( "\n" ); return( 0 ); fail: if( verbose != 0 ) mbedtls_printf( "failed\n" ); return( ret ); } #endif /* MBEDTLS_SELF_TEST */ #endif /* MBEDTLS_MD5_C */