pub unsafe extern "C" fn pkcs_1_v1_5_encode(
msg: *const c_uchar,
msglen: c_ulong,
block_type: c_int,
modulus_bitlen: c_ulong,
prng: *mut prng_state,
prng_idx: c_int,
out: *mut c_uchar,
outlen: *mut c_ulong,
) -> c_int