diff options
Diffstat (limited to 'lib/mbedtls-2.27.0/library/md2.c')
| -rw-r--r-- | lib/mbedtls-2.27.0/library/md2.c | 360 |
1 files changed, 360 insertions, 0 deletions
diff --git a/lib/mbedtls-2.27.0/library/md2.c b/lib/mbedtls-2.27.0/library/md2.c new file mode 100644 index 0000000..7264e30 --- /dev/null +++ b/lib/mbedtls-2.27.0/library/md2.c @@ -0,0 +1,360 @@ +/* + * RFC 1115/1319 compliant MD2 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 MD2 algorithm was designed by Ron Rivest in 1989. + * + * http://www.ietf.org/rfc/rfc1115.txt + * http://www.ietf.org/rfc/rfc1319.txt + */ + +#include "common.h" + +#if defined(MBEDTLS_MD2_C) + +#include "mbedtls/md2.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_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 ) +{ + 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 ) +{ + memset( ctx->cksum, 0, 16 ); + memset( ctx->state, 0, 46 ); + 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]; + } + + /* Zeroise variables to clear sensitive data from memory. */ + mbedtls_platform_zeroize( &t, sizeof( t ) ); + + 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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; + size_t fill; + + while( ilen > 0 ) + { + if( ilen > 16 - ctx->left ) + fill = 16 - ctx->left; + else + fill = ilen; + + 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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; + 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 ); + + memcpy( ctx->buffer, ctx->cksum, 16 ); + if( ( ret = mbedtls_internal_md2_process( ctx ) ) != 0 ) + return( ret ); + + 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_ERR_ERROR_CORRUPTION_DETECTED; + 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" }, + { "12345678901234567890123456789012345678901234567890123456789012345678901234567890" } +}; + +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 */ |