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/* BEGIN_HEADER */
#include "mbedtls/nist_kw.h"
/* END_HEADER */
/* BEGIN_DEPENDENCIES
* depends_on:MBEDTLS_NIST_KW_C
* END_DEPENDENCIES
*/
/* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST:MBEDTLS_AES_C */
void mbedtls_nist_kw_self_test( )
{
TEST_ASSERT( mbedtls_nist_kw_self_test( 1 ) == 0 );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_AES_C */
void mbedtls_nist_kw_mix_contexts( )
{
mbedtls_nist_kw_context ctx1, ctx2;
unsigned char key[16];
unsigned char plaintext[32];
unsigned char ciphertext1[40];
unsigned char ciphertext2[40];
size_t output_len, i;
memset( plaintext, 0, sizeof( plaintext ) );
memset( ciphertext1, 0, sizeof( ciphertext1 ) );
memset( ciphertext2, 0, sizeof( ciphertext2 ) );
memset( key, 0, sizeof( key ) );
/*
* 1. Check wrap and unwrap with two seperate contexts
*/
mbedtls_nist_kw_init( &ctx1 );
mbedtls_nist_kw_init( &ctx2 );
TEST_ASSERT( mbedtls_nist_kw_setkey( &ctx1,
MBEDTLS_CIPHER_ID_AES,
key, sizeof( key ) * 8,
1 ) == 0 );
TEST_ASSERT( mbedtls_nist_kw_wrap( &ctx1, MBEDTLS_KW_MODE_KW,
plaintext, sizeof( plaintext ),
ciphertext1, &output_len,
sizeof( ciphertext1 ) ) == 0 );
TEST_ASSERT( output_len == sizeof( ciphertext1 ) );
TEST_ASSERT( mbedtls_nist_kw_setkey( &ctx2,
MBEDTLS_CIPHER_ID_AES,
key, sizeof( key ) * 8,
0 ) == 0 );
TEST_ASSERT( mbedtls_nist_kw_unwrap( &ctx2, MBEDTLS_KW_MODE_KW,
ciphertext1, output_len,
plaintext, &output_len,
sizeof( plaintext ) ) == 0 );
TEST_ASSERT( output_len == sizeof( plaintext ) );
for( i = 0; i < sizeof( plaintext ); i++ )
{
TEST_ASSERT( plaintext[i] == 0 );
}
mbedtls_nist_kw_free( &ctx1 );
mbedtls_nist_kw_free( &ctx2 );
/*
* 2. Check wrapping with two modes, on same context
*/
mbedtls_nist_kw_init( &ctx1 );
mbedtls_nist_kw_init( &ctx2 );
output_len = sizeof( ciphertext1 );
TEST_ASSERT( mbedtls_nist_kw_setkey( &ctx1,
MBEDTLS_CIPHER_ID_AES,
key, sizeof( key ) * 8,
1 ) == 0 );
TEST_ASSERT( mbedtls_nist_kw_wrap( &ctx1, MBEDTLS_KW_MODE_KW,
plaintext, sizeof( plaintext ),
ciphertext1, &output_len,
sizeof( ciphertext1 ) ) == 0 );
TEST_ASSERT( output_len == sizeof( ciphertext1 ) );
TEST_ASSERT( mbedtls_nist_kw_wrap( &ctx1, MBEDTLS_KW_MODE_KWP,
plaintext, sizeof( plaintext ),
ciphertext2, &output_len,
sizeof( ciphertext2 ) ) == 0 );
TEST_ASSERT( output_len == sizeof( ciphertext2 ) );
TEST_ASSERT( mbedtls_nist_kw_setkey( &ctx2,
MBEDTLS_CIPHER_ID_AES,
key, sizeof( key ) * 8,
0 ) == 0 );
TEST_ASSERT( mbedtls_nist_kw_unwrap( &ctx2, MBEDTLS_KW_MODE_KW,
ciphertext1, sizeof( ciphertext1 ),
plaintext, &output_len,
sizeof( plaintext ) ) == 0 );
TEST_ASSERT( output_len == sizeof( plaintext ) );
for( i = 0; i < sizeof( plaintext ); i++ )
{
TEST_ASSERT( plaintext[i] == 0 );
}
TEST_ASSERT( mbedtls_nist_kw_unwrap( &ctx2, MBEDTLS_KW_MODE_KWP,
ciphertext2, sizeof( ciphertext2 ),
plaintext, &output_len,
sizeof( plaintext ) ) == 0 );
TEST_ASSERT( output_len == sizeof( plaintext ) );
for( i = 0; i < sizeof( plaintext ); i++ )
{
TEST_ASSERT( plaintext[i] == 0 );
}
exit:
mbedtls_nist_kw_free( &ctx1 );
mbedtls_nist_kw_free( &ctx2 );
}
/* END_CASE */
/* BEGIN_CASE */
void mbedtls_nist_kw_setkey( int cipher_id, int key_size,
int is_wrap, int result )
{
mbedtls_nist_kw_context ctx;
unsigned char key[32];
int ret;
mbedtls_nist_kw_init( &ctx );
memset( key, 0x2A, sizeof( key ) );
TEST_ASSERT( (unsigned) key_size <= 8 * sizeof( key ) );
ret = mbedtls_nist_kw_setkey( &ctx, cipher_id, key, key_size, is_wrap );
TEST_ASSERT( ret == result );
exit:
mbedtls_nist_kw_free( &ctx );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_AES_C */
void nist_kw_plaintext_lengths( int in_len, int out_len, int mode, int res )
{
mbedtls_nist_kw_context ctx;
unsigned char key[16];
unsigned char *plaintext = NULL;
unsigned char *ciphertext = NULL;
size_t output_len = out_len;
mbedtls_nist_kw_init( &ctx );
memset( key, 0, sizeof( key ) );
if( in_len != 0 )
{
plaintext = mbedtls_calloc( 1, in_len );
TEST_ASSERT( plaintext != NULL );
}
if( out_len != 0 )
{
ciphertext = mbedtls_calloc( 1, output_len );
TEST_ASSERT( ciphertext != NULL );
}
memset( plaintext, 0, in_len );
memset( ciphertext, 0, output_len );
TEST_ASSERT( mbedtls_nist_kw_setkey( &ctx, MBEDTLS_CIPHER_ID_AES,
key, 8 * sizeof( key ), 1 ) == 0 );
TEST_ASSERT( mbedtls_nist_kw_wrap( &ctx, mode, plaintext, in_len,
ciphertext, &output_len,
output_len ) == res );
if( res == 0 )
{
if( mode == MBEDTLS_KW_MODE_KWP )
TEST_ASSERT( output_len == (size_t) in_len + 8 -
( in_len % 8 ) + 8 );
else
TEST_ASSERT( output_len == (size_t) in_len + 8 );
}
else
{
TEST_ASSERT( output_len == 0 );
}
exit:
mbedtls_free( ciphertext );
mbedtls_free( plaintext );
mbedtls_nist_kw_free( &ctx );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_AES_C */
void nist_kw_ciphertext_lengths( int in_len, int out_len, int mode, int res )
{
mbedtls_nist_kw_context ctx;
unsigned char key[16];
unsigned char *plaintext = NULL;
unsigned char *ciphertext = NULL;
int unwrap_ret;
size_t output_len = out_len;
mbedtls_nist_kw_init( &ctx );
memset( key, 0, sizeof( key ) );
if( out_len != 0 )
{
plaintext = mbedtls_calloc( 1, output_len );
TEST_ASSERT( plaintext != NULL );
}
if( in_len != 0 )
{
ciphertext = mbedtls_calloc( 1, in_len );
TEST_ASSERT( ciphertext != NULL );
}
memset( plaintext, 0, output_len );
memset( ciphertext, 0, in_len );
TEST_ASSERT( mbedtls_nist_kw_setkey( &ctx, MBEDTLS_CIPHER_ID_AES,
key, 8 * sizeof( key ), 0 ) == 0 );
unwrap_ret = mbedtls_nist_kw_unwrap( &ctx, mode, ciphertext, in_len,
plaintext, &output_len,
output_len );
if( res == 0 )
TEST_ASSERT( unwrap_ret == MBEDTLS_ERR_CIPHER_AUTH_FAILED );
else
TEST_ASSERT( unwrap_ret == res );
TEST_ASSERT( output_len == 0 );
exit:
mbedtls_free( ciphertext );
mbedtls_free( plaintext );
mbedtls_nist_kw_free( &ctx );
}
/* END_CASE */
/* BEGIN_CASE */
void mbedtls_nist_kw_wrap( int cipher_id, int mode,
char *key_hex, char *msg_hex,
char *result_hex )
{
unsigned char key[32];
unsigned char msg[512];
unsigned char result[528];
unsigned char expected_result[528];
mbedtls_nist_kw_context ctx;
size_t key_len, msg_len, output_len, result_len, i, padlen;
mbedtls_nist_kw_init( &ctx );
memset( key, 0x00, sizeof( key ) );
memset( msg, 0x00, sizeof( msg ) );
memset( result, '+', sizeof( result ) );
key_len = unhexify( key, key_hex );
msg_len = unhexify( msg, msg_hex );
result_len = unhexify( expected_result, result_hex );
output_len = sizeof( result );
TEST_ASSERT( mbedtls_nist_kw_setkey( &ctx, cipher_id, key, key_len * 8, 1 )
== 0 );
/* Test with input == output */
TEST_ASSERT( mbedtls_nist_kw_wrap( &ctx, mode, msg, msg_len,
result, &output_len, sizeof( result ) ) == 0 );
TEST_ASSERT( output_len == result_len );
TEST_ASSERT( memcmp( expected_result, result, result_len ) == 0 );
padlen = ( msg_len % 8 != 0 ) ? 8 - (msg_len % 8 ) : 0;
/* Check that the function didn't write beyond the end of the buffer. */
for( i = msg_len + 8 + padlen; i < sizeof( result ); i++ )
{
TEST_ASSERT( result[i] == '+' );
}
exit:
mbedtls_nist_kw_free( &ctx );
}
/* END_CASE */
/* BEGIN_CASE */
void mbedtls_nist_kw_unwrap( int cipher_id, int mode,
char *key_hex, char *msg_hex,
char *result_hex, int expected_ret )
{
unsigned char key[32];
unsigned char msg[528];
unsigned char result[528];
unsigned char expected_result[528];
mbedtls_nist_kw_context ctx;
size_t key_len, msg_len, output_len, result_len, i;
mbedtls_nist_kw_init( &ctx );
memset( key, 0x00, sizeof( key ) );
memset( msg, 0x00, sizeof( msg ) );
memset( result, '+', sizeof( result ) );
memset( expected_result, 0x00, sizeof( expected_result ) );
key_len = unhexify( key, key_hex );
msg_len = unhexify( msg, msg_hex );
result_len = unhexify( expected_result, result_hex );
output_len = sizeof( result );
TEST_ASSERT( mbedtls_nist_kw_setkey( &ctx, cipher_id, key, key_len * 8, 0 )
== 0 );
/* Test with input == output */
TEST_ASSERT( mbedtls_nist_kw_unwrap( &ctx, mode, msg, msg_len,
result, &output_len, sizeof( result ) ) == expected_ret );
if( expected_ret == 0 )
{
TEST_ASSERT( output_len == result_len );
TEST_ASSERT( memcmp( expected_result, result, result_len ) == 0 );
}
else
{
TEST_ASSERT( output_len == 0 );
}
/* Check that the function didn't write beyond the end of the buffer. */
for( i = msg_len - 8; i < sizeof( result ); i++ )
{
TEST_ASSERT( result[i] == '+' );
}
exit:
mbedtls_nist_kw_free( &ctx );
}
/* END_CASE */
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