com.nimbusds.jose.JWSVerifier Maven / Gradle / Ivy

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package com.nimbusds.jose;


import com.nimbusds.jose.util.Base64URL;


/**
 * JSON Web Signature (JWS) verifier.
 *
 * @author Vladimir Dzhuvinov
 * @version 2015-04-21
 */
public interface JWSVerifier extends JWSProvider {


	/**
	 * Verifies the specified {@link JWSObject#getSignature signature} of a
	 * {@link JWSObject JWS object}.
	 *
	 * @param header       The JSON Web Signature (JWS) header. Must
	 *                     specify a supported JWS algorithm and must not
	 *                     be {@code null}.
	 * @param signingInput The signing input. Must not be {@code null}.
	 * @param signature    The signature part of the JWS object. Must not
	 *                     be {@code null}.
	 *
	 * @return {@code true} if the signature was successfully verified, 
	 *         {@code false} if the signature is invalid or if a critical
	 *         header is neither supported nor marked for deferral to the
	 *         application.
	 *
	 * @throws JOSEException If the JWS algorithm is not supported, or if
	 *                       signature verification failed for some other
	 *                       internal reason.
	 */
	boolean verify(final JWSHeader header, final byte[] signingInput, final Base64URL signature)
		throws JOSEException;
}