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Remove use of xxx_hmac() in program

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Manuel Pégourié-Gonnard 2015-03-24 18:22:59 +01:00
parent 7da726bb53
commit 003b3b132e
1 changed files with 33 additions and 27 deletions
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60
programs/aes/aescrypt2.c
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@ -34,15 +34,12 @@
#define polarssl_printf printf
#endif
#if defined(POLARSSL_AES_C) && defined(POLARSSL_SHA256_C) && \
defined(POLARSSL_FS_IO)
#include "mbedtls/aes.h"
#include "mbedtls/sha256.h"
#include "mbedtls/md.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#endif
#if defined(_WIN32)
#include <windows.h>
@ -64,10 +61,12 @@
"\n"
#if !defined(POLARSSL_AES_C) || !defined(POLARSSL_SHA256_C) || \
!defined(POLARSSL_FS_IO)
!defined(POLARSSL_FS_IO) || !defined(POLARSSL_MD_C)
int main( void )
{
polarssl_printf("POLARSSL_AES_C and/or POLARSSL_SHA256_C and/or POLARSSL_FS_IO not defined.\n");
polarssl_printf("POLARSSL_AES_C and/or POLARSSL_SHA256_C "
"and/or POLARSSL_FS_IO and/or POLARSSL_MD_C "
"not defined.\n");
return( 0 );
}
#else
@ -88,7 +87,7 @@ int main( int argc, char *argv[] )
unsigned char diff;
aes_context aes_ctx;
sha256_context sha_ctx;
md_context_t sha_ctx;
#if defined(_WIN32_WCE)
long filesize, offset;
@ -100,7 +99,14 @@ int main( int argc, char *argv[] )
#endif
aes_init( &aes_ctx );
sha256_init( &sha_ctx );
md_init( &sha_ctx );
ret = md_init_ctx( &sha_ctx, md_info_from_type( POLARSSL_MD_SHA256 ) );
if( ret != 0 )
{
polarssl_printf( " ! md_init_ctx() returned -0x%04x\n", -ret );
goto exit;
}
/*
* Parse the command-line arguments.
@ -227,10 +233,10 @@ int main( int argc, char *argv[] )
p = argv[2];
sha256_starts( &sha_ctx, 0 );
sha256_update( &sha_ctx, buffer, 8 );
sha256_update( &sha_ctx, (unsigned char *) p, strlen( p ) );
sha256_finish( &sha_ctx, digest );
md_starts( &sha_ctx );
md_update( &sha_ctx, buffer, 8 );
md_update( &sha_ctx, (unsigned char *) p, strlen( p ) );
md_finish( &sha_ctx, digest );
memcpy( IV, digest, 16 );
@ -261,15 +267,15 @@ int main( int argc, char *argv[] )
for( i = 0; i < 8192; i++ )
{
sha256_starts( &sha_ctx, 0 );
sha256_update( &sha_ctx, digest, 32 );
sha256_update( &sha_ctx, key, keylen );
sha256_finish( &sha_ctx, digest );
md_starts( &sha_ctx );
md_update( &sha_ctx, digest, 32 );
md_update( &sha_ctx, key, keylen );
md_finish( &sha_ctx, digest );
}
memset( key, 0, sizeof( key ) );
aes_setkey_enc( &aes_ctx, digest, 256 );
sha256_hmac_starts( &sha_ctx, digest, 32, 0 );
md_hmac_starts( &sha_ctx, digest, 32 );
/*
* Encrypt and write the ciphertext.
@ -289,7 +295,7 @@ int main( int argc, char *argv[] )
buffer[i] = (unsigned char)( buffer[i] ^ IV[i] );
aes_crypt_ecb( &aes_ctx, AES_ENCRYPT, buffer, buffer );
sha256_hmac_update( &sha_ctx, buffer, 16 );
md_hmac_update( &sha_ctx, buffer, 16 );
if( fwrite( buffer, 1, 16, fout ) != 16 )
{
@ -303,7 +309,7 @@ int main( int argc, char *argv[] )
/*
* Finally write the HMAC.
*/
sha256_hmac_finish( &sha_ctx, digest );
md_hmac_finish( &sha_ctx, digest );
if( fwrite( digest, 1, 32, fout ) != 32 )
{
@ -363,15 +369,15 @@ int main( int argc, char *argv[] )
for( i = 0; i < 8192; i++ )
{
sha256_starts( &sha_ctx, 0 );
sha256_update( &sha_ctx, digest, 32 );
sha256_update( &sha_ctx, key, keylen );
sha256_finish( &sha_ctx, digest );
md_starts( &sha_ctx );
md_update( &sha_ctx, digest, 32 );
md_update( &sha_ctx, key, keylen );
md_finish( &sha_ctx, digest );
}
memset( key, 0, sizeof( key ) );
aes_setkey_dec( &aes_ctx, digest, 256 );
sha256_hmac_starts( &sha_ctx, digest, 32, 0 );
md_hmac_starts( &sha_ctx, digest, 32 );
/*
* Decrypt and write the plaintext.
@ -386,7 +392,7 @@ int main( int argc, char *argv[] )
memcpy( tmp, buffer, 16 );
sha256_hmac_update( &sha_ctx, buffer, 16 );
md_hmac_update( &sha_ctx, buffer, 16 );
aes_crypt_ecb( &aes_ctx, AES_DECRYPT, buffer, buffer );
for( i = 0; i < 16; i++ )
@ -407,7 +413,7 @@ int main( int argc, char *argv[] )
/*
* Verify the message authentication code.
*/
sha256_hmac_finish( &sha_ctx, digest );
md_hmac_finish( &sha_ctx, digest );
if( fread( buffer, 1, 32, fin ) != 32 )
{
@ -440,7 +446,7 @@ exit:
memset( digest, 0, sizeof( digest ) );
aes_free( &aes_ctx );
sha256_free( &sha_ctx );
md_free( &sha_ctx );
return( ret );
}