Add PK tests to avoid hashlen overflow for RSA
diff --git a/tests/suites/test_suite_pk.data b/tests/suites/test_suite_pk.data
index 22a7fa8..f6ea378 100644
--- a/tests/suites/test_suite_pk.data
+++ b/tests/suites/test_suite_pk.data
@@ -150,3 +150,6 @@
depends_on:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_RSA_C
mbedtls_pk_check_pair:"data_files/ec_256_pub.pem":"data_files/server1.key":MBEDTLS_ERR_PK_TYPE_MISMATCH
+RSA hash_len overflow (size_t vs unsigned int)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_HAVE_INT64
+pk_rsa_overflow:
diff --git a/tests/suites/test_suite_pk.function b/tests/suites/test_suite_pk.function
index 08a2623..5fa8a69 100644
--- a/tests/suites/test_suite_pk.function
+++ b/tests/suites/test_suite_pk.function
@@ -5,6 +5,9 @@
#include "mbedtls/ecp.h"
#include "mbedtls/rsa.h"
+/* For detecting 64-bit compilation */
+#include "mbedtls/bignum.h"
+
static int rnd_std_rand( void *rng_state, unsigned char *output, size_t len );
#define RSA_KEY_SIZE 512
@@ -414,6 +417,34 @@
}
/* END_CASE */
+/* BEGIN_CASE depends_on:MBEDTLS_RSA_C:MBEDTLS_HAVE_INT64 */
+void pk_rsa_overflow( )
+{
+ mbedtls_pk_context pk;
+ size_t hash_len = (size_t)-1;
+
+ mbedtls_pk_init( &pk );
+
+ TEST_ASSERT( mbedtls_pk_setup( &pk,
+ mbedtls_pk_info_from_type( MBEDTLS_PK_RSA ) ) == 0 );
+
+#if defined(MBEDTLS_PKCS1_V21)
+ TEST_ASSERT( mbedtls_pk_verify_ext( MBEDTLS_PK_RSASSA_PSS, NULL, &pk,
+ MBEDTLS_MD_NONE, NULL, hash_len, NULL, 0 ) ==
+ MBEDTLS_ERR_PK_BAD_INPUT_DATA );
+#endif /* MBEDTLS_PKCS1_V21 */
+
+ TEST_ASSERT( mbedtls_pk_verify( &pk, MBEDTLS_MD_NONE, NULL, hash_len,
+ NULL, 0 ) == MBEDTLS_ERR_PK_BAD_INPUT_DATA );
+
+ TEST_ASSERT( mbedtls_pk_sign( &pk, MBEDTLS_MD_NONE, NULL, hash_len, NULL, 0,
+ rnd_std_rand, NULL ) == MBEDTLS_ERR_PK_BAD_INPUT_DATA );
+
+exit:
+ mbedtls_pk_free( &pk );
+}
+/* END_CASE */
+
/* BEGIN_CASE depends_on:MBEDTLS_RSA_C:MBEDTLS_PK_RSA_ALT_SUPPORT */
void pk_rsa_alt( )
{
@@ -461,6 +492,11 @@
/* Test signature */
TEST_ASSERT( mbedtls_pk_sign( &alt, MBEDTLS_MD_NONE, hash, sizeof hash,
sig, &sig_len, rnd_std_rand, NULL ) == 0 );
+#if defined(MBEDTLS_HAVE_INT64)
+ TEST_ASSERT( mbedtls_pk_sign( &alt, MBEDTLS_MD_NONE, hash, (size_t)-1,
+ NULL, NULL, rnd_std_rand, NULL ) ==
+ MBEDTLS_ERR_PK_BAD_INPUT_DATA );
+#endif /* MBEDTLS_HAVE_INT64 */
TEST_ASSERT( sig_len == RSA_KEY_LEN );
TEST_ASSERT( mbedtls_pk_verify( &rsa, MBEDTLS_MD_NONE,
hash, sizeof hash, sig, sig_len ) == 0 );