ctr_drbg tests: new validation function that doesn't reseed
This is one of the test scenarios from the CAVP test vectors.
@@ -55,8 +55,45 @@ exit:
/* END_CASE */
/* BEGIN_CASE */
-void ctr_drbg_validate_pr( data_t * add_init, data_t * entropy,
- data_t * add1, data_t * add2,
+
+/* BEGIN_CASE */
+void ctr_drbg_validate_no_reseed( char *add_init_string, char *entropy_string,
+ char *add1_string, char *add2_string,
+ char *result_string )
+{
+ unsigned char entropy[512];
+ unsigned char add_init[512];
+ unsigned char add1[512];
+ unsigned char add2[512];
+ mbedtls_ctr_drbg_context ctx;
+ unsigned char buf[512];
+ unsigned char result[512];
+ size_t entropy_len, add_init_len, add1_len, add2_len, result_len;
+
+ mbedtls_ctr_drbg_init( &ctx );
+
+ entropy_len = unhexify( entropy, entropy_string );
+ add_init_len = unhexify( add_init, add_init_string );
+ add1_len = unhexify( add1, add1_string );
+ add2_len = unhexify( add2, add2_string );
+ result_len = unhexify( result, result_string );
+
+ test_offset_idx = 0;
+ test_max_idx = entropy_len;
+ /* CTR_DRBG_Instantiate(entropy[:entropy_len], nonce, perso, <ignored>)
+ * where nonce||perso = add_init[add_init_len] */
+ TEST_ASSERT( mbedtls_ctr_drbg_seed_entropy_len( &ctx, mbedtls_test_entropy_func, entropy, add_init, add_init_len, entropy_len ) == 0 );
+
+ /* CTR_DRBG_Generate(result_len * 8 bits, add1[:add1_len]) -> buf */
+ TEST_ASSERT( mbedtls_ctr_drbg_random_with_add( &ctx, buf, result_len, add1, add1_len ) == 0 );
+ /* CTR_DRBG_Generate(result_len * 8 bits, add2[:add2_len]) -> buf */
+ TEST_ASSERT( mbedtls_ctr_drbg_random_with_add( &ctx, buf, result_len, add2, add2_len ) == 0 );
+ TEST_ASSERT( memcmp( buf, result, result_len ) == 0 );
+
+exit:
+ mbedtls_ctr_drbg_free( &ctx );
+}
+/* END_CASE */
char *result_string )
{
mbedtls_ctr_drbg_context ctx;
