Examples with JWSKeySelector com.nimbusds.jose.proc.JWSKeySelector used on opensource projects

Example 1 with JWSKeySelector

use of com.nimbusds.jose.proc.JWSKeySelector in project ddf by codice.

the class OidcTokenValidator method validateAccessTokenSignature.

/**
 * Validates an access token's signature
 *
 * @param accessToken - the token to validate
 * @param idToken - the corresponding ID token or null if one is not available. If an ID token is
 *     provided, the signature algorithm in the ID token is used. Otherwise the Algorithm provided
 *     in the header of the access token is used.
 * @param resourceRetriever - resource retriever
 * @param metadata - OIDC metadata
 */
private static void validateAccessTokenSignature(AccessToken accessToken, JWT idToken, ResourceRetriever resourceRetriever, OIDCProviderMetadata metadata) throws OidcValidationException {
    try {
        ConfigurableJWTProcessor jwtProcessor = new DefaultJWTProcessor();
        JWKSource keySource = new RemoteJWKSet(metadata.getJWKSetURI().toURL(), resourceRetriever);
        // Get signature algorithm, if ID token is given get algorithm from ID Token otherwise
        // get algorithm from access token header
        Algorithm expectedAlgorithm;
        if (idToken == null || idToken.getHeader().getAlgorithm() == Algorithm.NONE) {
            String accessTokenString = accessToken.getValue();
            Base64URL header = new Base64URL(accessTokenString.substring(0, accessTokenString.indexOf('.')));
            JSONObject jsonObject = JSONObjectUtils.parse(header.decodeToString());
            expectedAlgorithm = Header.parseAlgorithm(jsonObject);
        } else {
            expectedAlgorithm = idToken.getHeader().getAlgorithm();
        }
        if (expectedAlgorithm == Algorithm.NONE) {
            LOGGER.error("Error validating access token. Access token was not signed.");
            throw new OidcValidationException("Error validating access token. Access token was not signed.");
        }
        JWSAlgorithm expectedJWSAlgorithm = new JWSAlgorithm(expectedAlgorithm.getName(), expectedAlgorithm.getRequirement());
        JWSKeySelector keySelector = new JWSVerificationKeySelector(expectedJWSAlgorithm, keySource);
        jwtProcessor.setJWSKeySelector(keySelector);
        jwtProcessor.process(accessToken.getValue(), null);
    } catch (Exception e) {
        LOGGER.error(ACCESS_VALIDATION_ERR_MSG, e);
        throw new OidcValidationException(ACCESS_VALIDATION_ERR_MSG, e);
    }
}

Example 2 with JWSKeySelector

use of com.nimbusds.jose.proc.JWSKeySelector in project ddf by codice.

the class OidcTokenValidator method validateUserInfoIdToken.

/**
 * Validates id tokens received from the userinfo endpoint.
 *
 * <ul>
 *   <li>If the ID token is not signed, validation is ignored
 *   <li>If the ID token is signed
 *       <ul>
 *         <li>If the userinfo signing algorithms are listed in the metadata, we use that
 *             information along with the header attributes to validate the token
 *         <li>If the userinfo signing algorithms are NOT listed in the metadata, we just use the
 *             header attributes to validate the token
 *       </ul>
 *
 * @param idToken - id token to validate
 * @param resourceRetriever - resource retriever
 * @param metadata - OIDC metadata
 */
public static void validateUserInfoIdToken(JWT idToken, ResourceRetriever resourceRetriever, OIDCProviderMetadata metadata) throws OidcValidationException {
    if (metadata == null) {
        LOGGER.debug("Oidc metadata is null. Unable to validate userinfo id token.");
        return;
    }
    if (resourceRetriever == null) {
        resourceRetriever = new DefaultResourceRetriever();
    }
    try {
        if (!(idToken instanceof SignedJWT)) {
            LOGGER.info("ID token received from the userinfo endpoint was not signed.");
            return;
        }
        JWKSource jwkSource = new RemoteJWKSet(metadata.getJWKSetURI().toURL(), resourceRetriever);
        SignedJWT signedJWT = ((SignedJWT) idToken);
        JWSAlgorithm jwsAlgorithm = signedJWT.getHeader().getAlgorithm();
        List<JWSAlgorithm> userInfoSigAlgList = metadata.getUserInfoJWSAlgs();
        if (userInfoSigAlgList.isEmpty()) {
            LOGGER.warn("A JWS algorithm was not listed in the OpenID Connect provider metadata. " + "Using JWS algorithm specified in the header.");
        } else {
            if (!userInfoSigAlgList.contains(jwsAlgorithm)) {
                LOGGER.error("The signature algorithm of the id token do not match the expected ones.");
                throw new OidcValidationException("The signature algorithm of the id token do not match the expected ones.");
            }
        }
        JWSKeySelector jwsKeySelector = new JWSVerificationKeySelector(jwsAlgorithm, jwkSource);
        JWSVerifierFactory jwsVerifierFactory = new DefaultJWSVerifierFactory();
        List<? extends Key> keyCandidates = jwsKeySelector.selectJWSKeys(signedJWT.getHeader(), null);
        if (keyCandidates == null || keyCandidates.isEmpty()) {
            throw new OidcValidationException("Error Validating userinfo ID token. No matching key(s) found");
        }
        ListIterator<? extends Key> it = keyCandidates.listIterator();
        while (it.hasNext()) {
            JWSVerifier verifier = jwsVerifierFactory.createJWSVerifier(signedJWT.getHeader(), it.next());
            if (verifier == null) {
                continue;
            }
            final boolean validSignature = signedJWT.verify(verifier);
            if (validSignature) {
                return;
            }
            if (!it.hasNext()) {
                throw new OidcValidationException("Error Validating userinfo ID token. Invalid signature");
            }
        }
        throw new OidcValidationException("Error Validating userinfo ID token. No matching verifier(s) found");
    } catch (Exception e) {
        LOGGER.error(ID_VALIDATION_ERR_MSG, e);
        throw new OidcValidationException(ID_VALIDATION_ERR_MSG, e);
    }
}