| /* 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 */ |
| |