Change buf size to a valid size
Change the size of `buf` to a valid hash size, in `ecdsa_prim_random()`
@@ -14,7 +14,7 @@ void ecdsa_prim_random( int id )
mbedtls_ecp_point Q;
mbedtls_mpi d, r, s;
rnd_pseudo_info rnd_info;
- unsigned char buf[66];
+ unsigned char buf[MBEDTLS_MD_MAX_SIZE];
mbedtls_ecp_group_init( &grp );
mbedtls_ecp_point_init( &Q );
