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Change size of preallocated buffer for pk_sign() calls

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This commit is contained in:
k-stachowiak 2019-05-31 20:11:26 +02:00
parent 08f363baa9
commit e79c939693
3 changed files with 33 additions and 3 deletions
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12
programs/pkey/pk_sign.c
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@ -72,6 +72,16 @@ void mbedtls_param_failed( const char *failure_condition,
}
#endif
/*
* For the currently used signature algorithms the buffer to store any signature
* must be at least of size MAX(MBEDTLS_ECDSA_MAX_LEN, MBEDTLS_MPI_MAX_SIZE)
*/
#if MBEDTLS_ECDSA_MAX_LEN > MBEDTLS_MPI_MAX_SIZE
#define SIGNATURE_MAX_SIZE MBEDTLS_ECDSA_MAX_LEN
#else
#define SIGNATURE_MAX_SIZE MBEDTLS_MPI_MAX_SIZE
#endif
int main( int argc, char *argv[] )
{
FILE *f;
@ -81,7 +91,7 @@ int main( int argc, char *argv[] )
mbedtls_entropy_context entropy;
mbedtls_ctr_drbg_context ctr_drbg;
unsigned char hash[32];
unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
unsigned char buf[SIGNATURE_MAX_SIZE];
char filename[512];
const char *pers = "mbedtls_pk_sign";
size_t olen = 0;