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Add negative LMS import/export tests

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Signed-off-by: Raef Coles <raef.coles@arm.com>
This commit is contained in:
Raef Coles 2022-10-11 15:34:56 +01:00
parent 810612e14e
commit d6adcb6146
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2 changed files with 34 additions and 8 deletions
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8
tests/suites/test_suite_lms.data
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@ -179,5 +179,9 @@ lms_verify_test:"bfff9cd687351db88a98c71fd2f9b927a0ee600130a112533b791041d30cb91
LMS import/export test LMS import/export test
# This test uses a randomly generated LMS public key. It imports the key, and # This test uses a randomly generated LMS public key. It imports the key, and
# then exports it, and verifies that the exported key is identical to the # then exports it, and verifies that the exported key is identical to the
# original key. # original key. It also tests handling of too-small key export buffers.
lms_import_export_test:"00000006000000046B0927585C8547228D495361D73B970C287A2254BF8F1B170E55ACC9520A56CE5D2C711B6617718B49247D28CCC6D11D" lms_import_export_test:"0000000600000004d96bb26744d99ef624e32161c36d3d6efcdd0484e2b17a6dd183125be4b1af1cda931a91a3acb1151877c174f7943fd9":0
LMS import/export negative test #1
# This test uses the randomly generated LMS public key
lms_import_export_test:"0000000600000004d96bb26744d99ef624e32161c36d3d6efcdd0484e2b17a6dd183125be4b1af1cda931a91a3acb1151877c174f7943fd9":0

34
tests/suites/test_suite_lms.function
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@ -149,18 +149,40 @@ exit:
/* END_CASE */ /* END_CASE */
/* BEGIN_CASE */ /* BEGIN_CASE */
void lms_import_export_test ( data_t * pub_key ) void lms_import_export_test ( data_t * pub_key, int expected_import_rc )
{ {
mbedtls_lms_public_t ctx; mbedtls_lms_public_t ctx;
uint8_t exported_pub_key[MBEDTLS_LMS_PUBLIC_KEY_LEN(MBEDTLS_LMS_SHA256_M32_H10)]; 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); mbedtls_lms_public_init(&ctx);
TEST_EQUAL( mbedtls_lms_import_public_key( &ctx, pub_key->x, pub_key->len ), 0 ); TEST_EQUAL( mbedtls_lms_import_public_key( &ctx, pub_key->x, pub_key->len ), 0 );
TEST_EQUAL( mbedtls_lms_export_public_key( &ctx, exported_pub_key,
sizeof(exported_pub_key), NULL ), 0 );
ASSERT_COMPARE( pub_key->x, MBEDTLS_LMS_PUBLIC_KEY_LEN(MBEDTLS_LMS_SHA256_M32_H10), if( expected_import_rc == 0 )
exported_pub_key, MBEDTLS_LMS_PUBLIC_KEY_LEN(MBEDTLS_LMS_SHA256_M32_H10) ); {
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_buf_size, exported_pub_key_size );
ASSERT_COMPARE( pub_key->x, MBEDTLS_LMS_PUBLIC_KEY_LEN(MBEDTLS_LMS_SHA256_M32_H10),
exported_pub_key, MBEDTLS_LMS_PUBLIC_KEY_LEN(MBEDTLS_LMS_SHA256_M32_H10) );
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;
}
exit: exit:
mbedtls_lms_public_free( &ctx ); mbedtls_lms_public_free( &ctx );