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