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Add PK tests to avoid hashlen overflow for RSA

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Andres AG 2017-02-15 10:52:32 +00:00 committed by Simon Butcher
parent 72849877d0
commit 5c79d25d94
2 changed files with 39 additions and 0 deletions
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3
tests/suites/test_suite_pk.data
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@ -150,3 +150,6 @@ Check pair #5 (RSA vs EC)
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:

36
tests/suites/test_suite_pk.function
View File

@ -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 @@ exit:
}
/* 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 @@ void pk_rsa_alt( )
/* 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 );