library/md2.c - security/mbedtls - Rivoreo Source Code Repositories

 /*
  *  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 <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)

 /* Implementation that should never be optimized out by the compiler */
 static void mbedtls_zeroize( void *v, size_t n ) {
     volatile unsigned char *p = v; while( n-- ) *p++ = 0;
 }

 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_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];
     }

     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;

         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 );

     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_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 */
	/*
	* 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 <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)

	/* Implementation that should never be optimized out by the compiler */
	static void mbedtls_zeroize( void *v, size_t n ) {
	volatile unsigned char p = v; while( n-- ) p++ = 0;
	}

	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_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];
	}

	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;

	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 );

	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_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 */