Add extra LMS and LMOTS tests
NULL-message and LMOTS signature leak tests
Signed-off-by: Raef Coles <raef.coles@arm.com>
diff --git a/tests/suites/test_suite_lmots.function b/tests/suites/test_suite_lmots.function
index 2a9ea54..d7067df 100644
--- a/tests/suites/test_suite_lmots.function
+++ b/tests/suites/test_suite_lmots.function
@@ -2,6 +2,27 @@
#include "lmots.h"
#include "mbedtls/lms.h"
+#if defined(MBEDTLS_TEST_HOOKS)
+extern int( *mbedtls_lmots_sign_private_key_invalidated_hook )( unsigned char * );
+
+int check_lmots_private_key_for_leak(unsigned char * sig)
+{
+ size_t idx;
+
+ for( idx = MBEDTLS_LMOTS_SIG_SIGNATURE_OFFSET(MBEDTLS_LMOTS_SHA256_N32_W8);
+ idx < MBEDTLS_LMOTS_SIG_LEN(MBEDTLS_LMOTS_SHA256_N32_W8);
+ idx++ )
+ {
+ if( sig[idx] != 0x7E ) {
+ while(1){}
+ return 1;
+ }
+ }
+
+ return 0;
+}
+#endif /* defined(MBEDTLS_TEST_HOOKS) */
+
/* END_HEADER */
/* BEGIN_DEPENDENCIES
@@ -34,6 +55,29 @@
/* END_CASE */
/* BEGIN_CASE */
+void lmots_sign_verify_null_msg_test ( data_t *key_id, int leaf_id, data_t *seed )
+{
+ mbedtls_lmots_public_t pub_ctx;
+ mbedtls_lmots_private_t priv_ctx;
+ unsigned char sig[MBEDTLS_LMOTS_SIG_LEN(MBEDTLS_LMOTS_SHA256_N32_W8)];
+
+ mbedtls_lmots_init_public( &pub_ctx );
+ mbedtls_lmots_init_private( &priv_ctx );
+
+ TEST_ASSERT( mbedtls_lmots_generate_private_key(&priv_ctx, MBEDTLS_LMOTS_SHA256_N32_W8,
+ key_id->x, leaf_id, seed->x, seed->len ) == 0 );
+ TEST_ASSERT( mbedtls_lmots_calculate_public_key(&pub_ctx, &priv_ctx) == 0 );
+ TEST_ASSERT( mbedtls_lmots_sign(&priv_ctx, &mbedtls_test_rnd_std_rand, NULL,
+ NULL, 0, sig, sizeof(sig), NULL ) == 0 );
+ TEST_ASSERT( mbedtls_lmots_verify(&pub_ctx, NULL, 0, sig, sizeof(sig)) == 0 );
+
+exit:
+ mbedtls_lmots_free_public( &pub_ctx );
+ mbedtls_lmots_free_private( &priv_ctx );
+}
+/* END_CASE */
+
+/* BEGIN_CASE */
void lmots_verify_test ( data_t *msg, data_t *sig, data_t *pub_key,
int expected_rc )
{
@@ -94,3 +138,28 @@
mbedtls_lmots_free_private( &ctx );
}
/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_TEST_HOOKS */
+void lmots_signature_leak_test ( data_t *msg, data_t *key_id, int leaf_id,
+ data_t *seed )
+{
+ mbedtls_lmots_private_t ctx;
+ unsigned char sig[MBEDTLS_LMOTS_SIG_LEN(MBEDTLS_LMOTS_SHA256_N32_W8)];
+
+ mbedtls_lmots_sign_private_key_invalidated_hook = &check_lmots_private_key_for_leak;
+
+ /* Fill with recognisable pattern */
+ memset( sig, 0x7E, sizeof( sig ) );
+
+ mbedtls_lmots_init_private( &ctx );
+ TEST_ASSERT( mbedtls_lmots_generate_private_key(&ctx, MBEDTLS_LMOTS_SHA256_N32_W8,
+ key_id->x, leaf_id, seed->x,
+ seed->len ) == 0 );
+ TEST_ASSERT( mbedtls_lmots_sign(&ctx, mbedtls_test_rnd_std_rand, NULL,
+ msg->x, msg->len, sig, sizeof( sig ), NULL ) == 0 );
+
+exit:
+ mbedtls_lmots_free_private( &ctx );
+ mbedtls_lmots_sign_private_key_invalidated_hook = NULL;
+}
+/* END_CASE */