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Add extra LMS and LMOTS tests

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NULL-message and LMOTS signature leak tests

Signed-off-by: Raef Coles <raef.coles@arm.com>
This commit is contained in:
Raef Coles
2022-09-02 18:26:31 +01:00
parent fa24f9d6ea
commit 9c9027b1a4
6 changed files with 142 additions and 5 deletions
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21
library/lmots.c
View File

@ -44,11 +44,6 @@
#include "psa/crypto.h"
#define MBEDTLS_LMOTS_SIG_C_RANDOM_OFFSET (MBEDTLS_LMOTS_SIG_TYPE_OFFSET + \
MBEDTLS_LMOTS_TYPE_LEN)
#define MBEDTLS_LMOTS_SIG_SIGNATURE_OFFSET(type) (MBEDTLS_LMOTS_SIG_C_RANDOM_OFFSET + \
MBEDTLS_LMOTS_C_RANDOM_VALUE_LEN(type))
#define MBEDTLS_LMOTS_PUBLIC_KEY_TYPE_OFFSET (0)
#define MBEDTLS_LMOTS_PUBLIC_KEY_I_KEY_ID_OFFSET (MBEDTLS_LMOTS_PUBLIC_KEY_TYPE_OFFSET + \
MBEDTLS_LMOTS_TYPE_LEN)
@ -74,6 +69,10 @@
static const unsigned char D_PUBLIC_CONSTANT_BYTES[D_CONST_LEN] = {0x80, 0x80};
static const unsigned char D_MESSAGE_CONSTANT_BYTES[D_CONST_LEN] = {0x81, 0x81};
#if defined(MBEDTLS_TEST_HOOKS)
int( *mbedtls_lmots_sign_private_key_invalidated_hook )( unsigned char * ) = NULL;
#endif /* defined(MBEDTLS_TEST_HOOKS) */
void unsigned_int_to_network_bytes( unsigned int val, size_t len,
unsigned char *bytes )
{
@ -815,6 +814,18 @@ int mbedtls_lmots_sign( mbedtls_lmots_private_t *ctx,
MBEDTLS_LMOTS_TYPE_LEN,
sig + MBEDTLS_LMOTS_SIG_TYPE_OFFSET );
/* Test hook to check if sig is being written to before we invalidate the
* private key.
*/
#if defined(MBEDTLS_TEST_HOOKS)
if( mbedtls_lmots_sign_private_key_invalidated_hook != NULL )
{
ret = ( *mbedtls_lmots_sign_private_key_invalidated_hook )( sig );
if( ret != 0 )
return( ret );
}
#endif /* defined(MBEDTLS_TEST_HOOKS) */
/* We've got a valid signature now, so it's time to make sure the private
* key can't be reused.
*/

4
library/lmots.h
View File

@ -54,6 +54,10 @@
MBEDTLS_LMOTS_N_HASH_LEN(type))
#define MBEDTLS_LMOTS_SIG_TYPE_OFFSET (0)
#define MBEDTLS_LMOTS_SIG_C_RANDOM_OFFSET (MBEDTLS_LMOTS_SIG_TYPE_OFFSET + \
MBEDTLS_LMOTS_TYPE_LEN)
#define MBEDTLS_LMOTS_SIG_SIGNATURE_OFFSET(type) (MBEDTLS_LMOTS_SIG_C_RANDOM_OFFSET + \
MBEDTLS_LMOTS_C_RANDOM_VALUE_LEN(type))
#ifdef __cplusplus
extern "C" {