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/* BEGIN_HEADER */
#include "mbedtls/lms.h"
/* END_HEADER */
/* BEGIN_DEPENDENCIES
* depends_on:MBEDTLS_LMS_C
* END_DEPENDENCIES
*/
/* BEGIN_CASE depends_on:MBEDTLS_LMS_PRIVATE */
void lms_sign_verify_test ( data_t *msg, data_t *seed )
{
mbedtls_lms_public_t pub_ctx;
mbedtls_lms_private_t priv_ctx;
unsigned char sig[MBEDTLS_LMS_SIG_LEN(MBEDTLS_LMS_SHA256_M32_H10, MBEDTLS_LMOTS_SHA256_N32_W8)];
mbedtls_lms_public_init( &pub_ctx );
mbedtls_lms_private_init( &priv_ctx );
/* Allocation failure isn't a test failure, since it likely just means
* there's not enough memory to run the test.
*/
TEST_EQUAL( mbedtls_lms_generate_private_key( &priv_ctx, MBEDTLS_LMS_SHA256_M32_H10,
MBEDTLS_LMOTS_SHA256_N32_W8,
mbedtls_test_rnd_std_rand, NULL,
seed->x, seed->len ), 0 );
TEST_EQUAL( mbedtls_lms_calculate_public_key( &pub_ctx, &priv_ctx ), 0 );
TEST_EQUAL( mbedtls_lms_sign( &priv_ctx, mbedtls_test_rnd_std_rand, NULL,
msg->x, msg->len, sig, sizeof( sig ),
NULL ), 0 );
TEST_EQUAL( mbedtls_lms_verify( &pub_ctx, msg->x, msg->len, sig,
sizeof( sig ) ), 0 );
exit:
mbedtls_lms_public_free( &pub_ctx );
mbedtls_lms_private_free( &priv_ctx );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_LMS_PRIVATE */
void lms_sign_verify_null_msg_test( data_t *seed )
{
mbedtls_lms_public_t pub_ctx;
mbedtls_lms_private_t priv_ctx;
unsigned char sig[MBEDTLS_LMS_SIG_LEN(MBEDTLS_LMS_SHA256_M32_H10, MBEDTLS_LMOTS_SHA256_N32_W8)];
mbedtls_lms_public_init( &pub_ctx );
mbedtls_lms_private_init( &priv_ctx );
/* Allocation failure isn't a test failure, since it likely just means
* there's not enough memory to run the test.
*/
TEST_EQUAL( mbedtls_lms_generate_private_key( &priv_ctx, MBEDTLS_LMS_SHA256_M32_H10,
MBEDTLS_LMOTS_SHA256_N32_W8,
mbedtls_test_rnd_std_rand, NULL,
seed->x, seed->len ), 0 );
TEST_EQUAL( mbedtls_lms_calculate_public_key( &pub_ctx, &priv_ctx ), 0 );
TEST_EQUAL( mbedtls_lms_sign( &priv_ctx, mbedtls_test_rnd_std_rand, NULL,
NULL, 0, sig, sizeof( sig ),
NULL ), 0 );
TEST_EQUAL( mbedtls_lms_verify( &pub_ctx, NULL, 0, sig,
sizeof( sig ) ), 0 );
exit:
mbedtls_lms_public_free( &pub_ctx );
mbedtls_lms_private_free( &priv_ctx );
}
/* END_CASE */
/* BEGIN_CASE */
void lms_verify_test ( data_t * msg, data_t * sig, data_t * pub_key,
int expected_rc )
{
mbedtls_lms_public_t ctx;
unsigned int size;
unsigned char *tmp_sig = NULL;
mbedtls_lms_public_init( &ctx);
TEST_EQUAL(mbedtls_lms_import_public_key( &ctx, pub_key->x, pub_key->len ), 0);
TEST_EQUAL(mbedtls_lms_verify( &ctx, msg->x, msg->len, sig->x, sig->len ), expected_rc);
/* Test negative cases if the input data is valid */
if( expected_rc == 0 )
{
if( msg->len >= 1 )
{
/* Altering first message byte must cause verification failure */
msg->x[0] ^= 1;
TEST_EQUAL(mbedtls_lms_verify( &ctx, msg->x, msg->len, sig->x, sig->len ),
MBEDTLS_ERR_LMS_VERIFY_FAILED);
msg->x[0] ^= 1;
/* Altering last message byte must cause verification failure */
msg->x[msg->len - 1] ^= 1;
TEST_EQUAL(mbedtls_lms_verify( &ctx, msg->x, msg->len, sig->x, sig->len ),
MBEDTLS_ERR_LMS_VERIFY_FAILED);
msg->x[msg->len - 1] ^= 1;
}
if( sig->len >= 1 )
{
/* Altering first signature byte must cause verification failure */
sig->x[0] ^= 1;
TEST_EQUAL(mbedtls_lms_verify( &ctx, msg->x, msg->len, sig->x, sig->len ),
MBEDTLS_ERR_LMS_VERIFY_FAILED);
sig->x[0] ^= 1;
/* Altering last signature byte must cause verification failure */
sig->x[sig->len - 1] ^= 1;
TEST_EQUAL(mbedtls_lms_verify( &ctx, msg->x, msg->len, sig->x, sig->len ),
MBEDTLS_ERR_LMS_VERIFY_FAILED);
sig->x[sig->len - 1] ^= 1;
}
/* Signatures of all sizes must not verify, whether shorter or longer */
for( size = 0; size < sig->len; size++ ) {
if( size == sig->len )
continue;
ASSERT_ALLOC( tmp_sig, size );
if( tmp_sig != NULL )
memcpy( tmp_sig, sig->x, MIN(size, sig->len) );
TEST_EQUAL(mbedtls_lms_verify( &ctx, msg->x, msg->len, tmp_sig, size ),
MBEDTLS_ERR_LMS_VERIFY_FAILED);
mbedtls_free( tmp_sig );
tmp_sig = NULL;
}
}
exit:
mbedtls_free( tmp_sig );
mbedtls_lms_public_free( &ctx );
}
/* END_CASE */
/* BEGIN_CASE */
void lms_import_export_test ( data_t * pub_key, int expected_import_rc )
{
mbedtls_lms_public_t ctx;
size_t exported_pub_key_buf_size = 0;
size_t exported_pub_key_size = 0;
unsigned char *exported_pub_key = NULL;
mbedtls_lms_public_init(&ctx);
TEST_EQUAL( mbedtls_lms_import_public_key( &ctx, pub_key->x, pub_key->len ),
expected_import_rc );
if( expected_import_rc == 0 )
{
exported_pub_key_buf_size = MBEDTLS_LMS_PUBLIC_KEY_LEN(MBEDTLS_LMS_SHA256_M32_H10);
ASSERT_ALLOC( exported_pub_key, exported_pub_key_buf_size );
TEST_EQUAL( mbedtls_lms_export_public_key( &ctx, exported_pub_key,
exported_pub_key_buf_size,
&exported_pub_key_size ), 0 );
TEST_EQUAL( exported_pub_key_size,
MBEDTLS_LMS_PUBLIC_KEY_LEN(MBEDTLS_LMS_SHA256_M32_H10 ) );
ASSERT_COMPARE( pub_key->x, pub_key->len,
exported_pub_key, exported_pub_key_size );
mbedtls_free(exported_pub_key);
exported_pub_key = NULL;
/* Export into too-small buffer should fail */
exported_pub_key_buf_size = MBEDTLS_LMS_PUBLIC_KEY_LEN(MBEDTLS_LMS_SHA256_M32_H10) - 1;
ASSERT_ALLOC( exported_pub_key, exported_pub_key_buf_size);
TEST_EQUAL( mbedtls_lms_export_public_key( &ctx, exported_pub_key,
exported_pub_key_buf_size, NULL ),
MBEDTLS_ERR_LMS_BUFFER_TOO_SMALL );
mbedtls_free(exported_pub_key);
exported_pub_key = NULL;
/* Export into too-large buffer should succeed */
exported_pub_key_buf_size = MBEDTLS_LMS_PUBLIC_KEY_LEN(MBEDTLS_LMS_SHA256_M32_H10) + 1;
ASSERT_ALLOC( exported_pub_key, exported_pub_key_buf_size);
TEST_EQUAL( mbedtls_lms_export_public_key( &ctx, exported_pub_key,
exported_pub_key_buf_size,
&exported_pub_key_size ),
0 );
ASSERT_COMPARE( pub_key->x, pub_key->len,
exported_pub_key, exported_pub_key_size );
mbedtls_free(exported_pub_key);
exported_pub_key = NULL;
}
exit:
mbedtls_free( exported_pub_key );
mbedtls_lms_public_free( &ctx );
}
/* END_CASE */
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