pkcs1_encode
int pkcs1_encode(int method, uint8_t *databuf, size_t datalen, uint8_t *padbuf,
rv = pkcs1_encode(PKCS1_ENCRYPT, pData, ulDataLen, plain_data,
rv = pkcs1_encode(PKCS1_SIGN, pData, ulDataLen, plain_data,
rv = pkcs1_encode(PKCS1_SIGN, dataptr, dlen, plain_data,
rv = pkcs1_encode(PKCS1_ENCRYPT, ptptr, plen,