Modify the verify digitally signed message function

            external function fx_verifyCertificate( in octetstring p_psoData ) return boolean;

            external function fx_verifySignature( in octetstring p_signature ) return boolean;

        	/**

        	 * @desc	This method verifies a digitally signed message based on DSA or RSA cryptographic algorithms

        	 * @param	p_message The original message to verify

        	 * @param	p_signedMessage The signed message to verify

        	 * @param	p_key The Document Signer Public Key (KPuDS) in PEM format

        	 * @return	true if the message is verified successfuly, false otherwise

        	 */

            external function fx_verifySignature(in octetstring p_message, in octetstring p_signedMessage, in octetstring p_key) return boolean;

        	/**

        	 * @desc	Calculate a pseudo-random integer value as described in RFC2246