| /* |
| * RFC 1115/1319 compliant MD2 implementation |
| * |
| * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved |
| * 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. |
| * |
| * This file is part of mbed TLS (https://tls.mbed.org) |
| */ |
| /* |
| * The MD2 algorithm was designed by Ron Rivest in 1989. |
| * |
| * http://www.ietf.org/rfc/rfc1115.txt |
| * http://www.ietf.org/rfc/rfc1319.txt |
| */ |
| |
| #if !defined(MBEDTLS_CONFIG_FILE) |
| #include "mbedtls/config.h" |
| #else |
| #include MBEDTLS_CONFIG_FILE |
| #endif |
| |
| #if defined(MBEDTLS_MD2_C) |
| |
| #include "mbedtls/md2.h" |
| #include "mbedtls/platform_util.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_MD2_ALT) |
| |
| static const unsigned char PI_SUBST[256] = |
| { |
| 0x29, 0x2E, 0x43, 0xC9, 0xA2, 0xD8, 0x7C, 0x01, 0x3D, 0x36, |
| 0x54, 0xA1, 0xEC, 0xF0, 0x06, 0x13, 0x62, 0xA7, 0x05, 0xF3, |
| 0xC0, 0xC7, 0x73, 0x8C, 0x98, 0x93, 0x2B, 0xD9, 0xBC, 0x4C, |
| 0x82, 0xCA, 0x1E, 0x9B, 0x57, 0x3C, 0xFD, 0xD4, 0xE0, 0x16, |
| 0x67, 0x42, 0x6F, 0x18, 0x8A, 0x17, 0xE5, 0x12, 0xBE, 0x4E, |
| 0xC4, 0xD6, 0xDA, 0x9E, 0xDE, 0x49, 0xA0, 0xFB, 0xF5, 0x8E, |
| 0xBB, 0x2F, 0xEE, 0x7A, 0xA9, 0x68, 0x79, 0x91, 0x15, 0xB2, |
| 0x07, 0x3F, 0x94, 0xC2, 0x10, 0x89, 0x0B, 0x22, 0x5F, 0x21, |
| 0x80, 0x7F, 0x5D, 0x9A, 0x5A, 0x90, 0x32, 0x27, 0x35, 0x3E, |
| 0xCC, 0xE7, 0xBF, 0xF7, 0x97, 0x03, 0xFF, 0x19, 0x30, 0xB3, |
| 0x48, 0xA5, 0xB5, 0xD1, 0xD7, 0x5E, 0x92, 0x2A, 0xAC, 0x56, |
| 0xAA, 0xC6, 0x4F, 0xB8, 0x38, 0xD2, 0x96, 0xA4, 0x7D, 0xB6, |
| 0x76, 0xFC, 0x6B, 0xE2, 0x9C, 0x74, 0x04, 0xF1, 0x45, 0x9D, |
| 0x70, 0x59, 0x64, 0x71, 0x87, 0x20, 0x86, 0x5B, 0xCF, 0x65, |
| 0xE6, 0x2D, 0xA8, 0x02, 0x1B, 0x60, 0x25, 0xAD, 0xAE, 0xB0, |
| 0xB9, 0xF6, 0x1C, 0x46, 0x61, 0x69, 0x34, 0x40, 0x7E, 0x0F, |
| 0x55, 0x47, 0xA3, 0x23, 0xDD, 0x51, 0xAF, 0x3A, 0xC3, 0x5C, |
| 0xF9, 0xCE, 0xBA, 0xC5, 0xEA, 0x26, 0x2C, 0x53, 0x0D, 0x6E, |
| 0x85, 0x28, 0x84, 0x09, 0xD3, 0xDF, 0xCD, 0xF4, 0x41, 0x81, |
| 0x4D, 0x52, 0x6A, 0xDC, 0x37, 0xC8, 0x6C, 0xC1, 0xAB, 0xFA, |
| 0x24, 0xE1, 0x7B, 0x08, 0x0C, 0xBD, 0xB1, 0x4A, 0x78, 0x88, |
| 0x95, 0x8B, 0xE3, 0x63, 0xE8, 0x6D, 0xE9, 0xCB, 0xD5, 0xFE, |
| 0x3B, 0x00, 0x1D, 0x39, 0xF2, 0xEF, 0xB7, 0x0E, 0x66, 0x58, |
| 0xD0, 0xE4, 0xA6, 0x77, 0x72, 0xF8, 0xEB, 0x75, 0x4B, 0x0A, |
| 0x31, 0x44, 0x50, 0xB4, 0x8F, 0xED, 0x1F, 0x1A, 0xDB, 0x99, |
| 0x8D, 0x33, 0x9F, 0x11, 0x83, 0x14 |
| }; |
| |
| void mbedtls_md2_init( mbedtls_md2_context *ctx ) |
| { |
| mbedtls_platform_memset( ctx, 0, sizeof( mbedtls_md2_context ) ); |
| } |
| |
| void mbedtls_md2_free( mbedtls_md2_context *ctx ) |
| { |
| if( ctx == NULL ) |
| return; |
| |
| mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md2_context ) ); |
| } |
| |
| void mbedtls_md2_clone( mbedtls_md2_context *dst, |
| const mbedtls_md2_context *src ) |
| { |
| *dst = *src; |
| } |
| |
| /* |
| * MD2 context setup |
| */ |
| int mbedtls_md2_starts_ret( mbedtls_md2_context *ctx ) |
| { |
| mbedtls_platform_memset( ctx->cksum, 0, 16 ); |
| mbedtls_platform_memset( ctx->state, 0, 46 ); |
| mbedtls_platform_memset( ctx->buffer, 0, 16 ); |
| ctx->left = 0; |
| |
| return( 0 ); |
| } |
| |
| #if !defined(MBEDTLS_DEPRECATED_REMOVED) |
| void mbedtls_md2_starts( mbedtls_md2_context *ctx ) |
| { |
| mbedtls_md2_starts_ret( ctx ); |
| } |
| #endif |
| |
| #if !defined(MBEDTLS_MD2_PROCESS_ALT) |
| int mbedtls_internal_md2_process( mbedtls_md2_context *ctx ) |
| { |
| int i, j; |
| unsigned char t = 0; |
| |
| for( i = 0; i < 16; i++ ) |
| { |
| ctx->state[i + 16] = ctx->buffer[i]; |
| ctx->state[i + 32] = |
| (unsigned char)( ctx->buffer[i] ^ ctx->state[i]); |
| } |
| |
| for( i = 0; i < 18; i++ ) |
| { |
| for( j = 0; j < 48; j++ ) |
| { |
| ctx->state[j] = (unsigned char) |
| ( ctx->state[j] ^ PI_SUBST[t] ); |
| t = ctx->state[j]; |
| } |
| |
| t = (unsigned char)( t + i ); |
| } |
| |
| t = ctx->cksum[15]; |
| |
| for( i = 0; i < 16; i++ ) |
| { |
| ctx->cksum[i] = (unsigned char) |
| ( ctx->cksum[i] ^ PI_SUBST[ctx->buffer[i] ^ t] ); |
| t = ctx->cksum[i]; |
| } |
| |
| return( 0 ); |
| } |
| |
| #if !defined(MBEDTLS_DEPRECATED_REMOVED) |
| void mbedtls_md2_process( mbedtls_md2_context *ctx ) |
| { |
| mbedtls_internal_md2_process( ctx ); |
| } |
| #endif |
| #endif /* !MBEDTLS_MD2_PROCESS_ALT */ |
| |
| /* |
| * MD2 process buffer |
| */ |
| int mbedtls_md2_update_ret( mbedtls_md2_context *ctx, |
| const unsigned char *input, |
| size_t ilen ) |
| { |
| int ret; |
| size_t fill; |
| |
| while( ilen > 0 ) |
| { |
| if( ilen > 16 - ctx->left ) |
| fill = 16 - ctx->left; |
| else |
| fill = ilen; |
| |
| mbedtls_platform_memcpy( ctx->buffer + ctx->left, input, fill ); |
| |
| ctx->left += fill; |
| input += fill; |
| ilen -= fill; |
| |
| if( ctx->left == 16 ) |
| { |
| ctx->left = 0; |
| if( ( ret = mbedtls_internal_md2_process( ctx ) ) != 0 ) |
| return( ret ); |
| } |
| } |
| |
| return( 0 ); |
| } |
| |
| #if !defined(MBEDTLS_DEPRECATED_REMOVED) |
| void mbedtls_md2_update( mbedtls_md2_context *ctx, |
| const unsigned char *input, |
| size_t ilen ) |
| { |
| mbedtls_md2_update_ret( ctx, input, ilen ); |
| } |
| #endif |
| |
| /* |
| * MD2 final digest |
| */ |
| int mbedtls_md2_finish_ret( mbedtls_md2_context *ctx, |
| unsigned char output[16] ) |
| { |
| int ret; |
| size_t i; |
| unsigned char x; |
| |
| x = (unsigned char)( 16 - ctx->left ); |
| |
| for( i = ctx->left; i < 16; i++ ) |
| ctx->buffer[i] = x; |
| |
| if( ( ret = mbedtls_internal_md2_process( ctx ) ) != 0 ) |
| return( ret ); |
| |
| mbedtls_platform_memcpy( ctx->buffer, ctx->cksum, 16 ); |
| if( ( ret = mbedtls_internal_md2_process( ctx ) ) != 0 ) |
| return( ret ); |
| |
| mbedtls_platform_memcpy( output, ctx->state, 16 ); |
| |
| return( 0 ); |
| } |
| |
| #if !defined(MBEDTLS_DEPRECATED_REMOVED) |
| void mbedtls_md2_finish( mbedtls_md2_context *ctx, |
| unsigned char output[16] ) |
| { |
| mbedtls_md2_finish_ret( ctx, output ); |
| } |
| #endif |
| |
| #endif /* !MBEDTLS_MD2_ALT */ |
| |
| /* |
| * output = MD2( input buffer ) |
| */ |
| int mbedtls_md2_ret( const unsigned char *input, |
| size_t ilen, |
| unsigned char output[16] ) |
| { |
| int ret; |
| mbedtls_md2_context ctx; |
| |
| mbedtls_md2_init( &ctx ); |
| |
| if( ( ret = mbedtls_md2_starts_ret( &ctx ) ) != 0 ) |
| goto exit; |
| |
| if( ( ret = mbedtls_md2_update_ret( &ctx, input, ilen ) ) != 0 ) |
| goto exit; |
| |
| if( ( ret = mbedtls_md2_finish_ret( &ctx, output ) ) != 0 ) |
| goto exit; |
| |
| exit: |
| mbedtls_md2_free( &ctx ); |
| |
| return( ret ); |
| } |
| |
| #if !defined(MBEDTLS_DEPRECATED_REMOVED) |
| void mbedtls_md2( const unsigned char *input, |
| size_t ilen, |
| unsigned char output[16] ) |
| { |
| mbedtls_md2_ret( input, ilen, output ); |
| } |
| #endif |
| |
| #if defined(MBEDTLS_SELF_TEST) |
| |
| /* |
| * RFC 1319 test vectors |
| */ |
| static const unsigned char md2_test_str[7][81] = |
| { |
| { "" }, |
| { "a" }, |
| { "abc" }, |
| { "message digest" }, |
| { "abcdefghijklmnopqrstuvwxyz" }, |
| { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" }, |
| { "12345678901234567890123456789012345678901234567890123456789012" |
| "345678901234567890" } |
| }; |
| |
| static const size_t md2_test_strlen[7] = |
| { |
| 0, 1, 3, 14, 26, 62, 80 |
| }; |
| |
| static const unsigned char md2_test_sum[7][16] = |
| { |
| { 0x83, 0x50, 0xE5, 0xA3, 0xE2, 0x4C, 0x15, 0x3D, |
| 0xF2, 0x27, 0x5C, 0x9F, 0x80, 0x69, 0x27, 0x73 }, |
| { 0x32, 0xEC, 0x01, 0xEC, 0x4A, 0x6D, 0xAC, 0x72, |
| 0xC0, 0xAB, 0x96, 0xFB, 0x34, 0xC0, 0xB5, 0xD1 }, |
| { 0xDA, 0x85, 0x3B, 0x0D, 0x3F, 0x88, 0xD9, 0x9B, |
| 0x30, 0x28, 0x3A, 0x69, 0xE6, 0xDE, 0xD6, 0xBB }, |
| { 0xAB, 0x4F, 0x49, 0x6B, 0xFB, 0x2A, 0x53, 0x0B, |
| 0x21, 0x9F, 0xF3, 0x30, 0x31, 0xFE, 0x06, 0xB0 }, |
| { 0x4E, 0x8D, 0xDF, 0xF3, 0x65, 0x02, 0x92, 0xAB, |
| 0x5A, 0x41, 0x08, 0xC3, 0xAA, 0x47, 0x94, 0x0B }, |
| { 0xDA, 0x33, 0xDE, 0xF2, 0xA4, 0x2D, 0xF1, 0x39, |
| 0x75, 0x35, 0x28, 0x46, 0xC3, 0x03, 0x38, 0xCD }, |
| { 0xD5, 0x97, 0x6F, 0x79, 0xD8, 0x3D, 0x3A, 0x0D, |
| 0xC9, 0x80, 0x6C, 0x3C, 0x66, 0xF3, 0xEF, 0xD8 } |
| }; |
| |
| /* |
| * Checkup routine |
| */ |
| int mbedtls_md2_self_test( int verbose ) |
| { |
| int i, ret = 0; |
| unsigned char md2sum[16]; |
| |
| for( i = 0; i < 7; i++ ) |
| { |
| if( verbose != 0 ) |
| mbedtls_printf( " MD2 test #%d: ", i + 1 ); |
| |
| ret = mbedtls_md2_ret( md2_test_str[i], md2_test_strlen[i], md2sum ); |
| if( ret != 0 ) |
| goto fail; |
| |
| if( memcmp( md2sum, md2_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_MD2_C */ |