Examples with JweEncrypter io.jans.as.model.jwe.JweEncrypter used on opensource projects

Example 1 with JweEncrypter

use of io.jans.as.model.jwe.JweEncrypter in project jans by JanssenProject.

the class JwrService method encryptJwe.

private Jwe encryptJwe(Jwe jwe, Client client) throws Exception {
    if (appConfiguration.getUseNestedJwtDuringEncryption()) {
        JwtSigner jwtSigner = JwtSigner.newJwtSigner(appConfiguration, webKeysConfiguration, client);
        Jwt jwt = jwtSigner.newJwt();
        jwt.setClaims(jwe.getClaims());
        jwe.setSignedJWTPayload(signJwt(jwt, client));
    }
    KeyEncryptionAlgorithm keyEncryptionAlgorithm = KeyEncryptionAlgorithm.fromName(jwe.getHeader().getClaimAsString(ALGORITHM));
    final BlockEncryptionAlgorithm encryptionMethod = jwe.getHeader().getEncryptionMethod();
    if (keyEncryptionAlgorithm == KeyEncryptionAlgorithm.RSA_OAEP || keyEncryptionAlgorithm == KeyEncryptionAlgorithm.RSA1_5) {
        JSONObject jsonWebKeys = JwtUtil.getJSONWebKeys(client.getJwksUri());
        String keyId = new ServerCryptoProvider(cryptoProvider).getKeyId(JSONWebKeySet.fromJSONObject(jsonWebKeys), Algorithm.fromString(keyEncryptionAlgorithm.getName()), Use.ENCRYPTION);
        PublicKey publicKey = cryptoProvider.getPublicKey(keyId, jsonWebKeys, null);
        jwe.getHeader().setKeyId(keyId);
        if (publicKey == null) {
            throw new InvalidJweException("The public key is not valid");
        }
        JweEncrypter jweEncrypter = new JweEncrypterImpl(keyEncryptionAlgorithm, encryptionMethod, publicKey);
        return jweEncrypter.encrypt(jwe);
    }
    if (keyEncryptionAlgorithm == KeyEncryptionAlgorithm.A128KW || keyEncryptionAlgorithm == KeyEncryptionAlgorithm.A256KW) {
        byte[] sharedSymmetricKey = clientService.decryptSecret(client.getClientSecret()).getBytes(StandardCharsets.UTF_8);
        JweEncrypter jweEncrypter = new JweEncrypterImpl(keyEncryptionAlgorithm, encryptionMethod, sharedSymmetricKey);
        return jweEncrypter.encrypt(jwe);
    }
    throw new IllegalArgumentException("Unsupported encryption algorithm: " + keyEncryptionAlgorithm);
}

Example 2 with JweEncrypter

use of io.jans.as.model.jwe.JweEncrypter in project jans by JanssenProject.

the class UserInfoRestWebServiceImpl method getJweResponse.

public String getJweResponse(KeyEncryptionAlgorithm keyEncryptionAlgorithm, BlockEncryptionAlgorithm blockEncryptionAlgorithm, User user, AuthorizationGrant authorizationGrant, Collection<String> scopes) throws Exception {
    log.trace("Building JWE reponse with next scopes {0} for user {1} and user custom attributes {0}", scopes, user.getUserId(), user.getCustomAttributes());
    Jwe jwe = new Jwe();
    // Header
    jwe.getHeader().setType(JwtType.JWT);
    jwe.getHeader().setAlgorithm(keyEncryptionAlgorithm);
    jwe.getHeader().setEncryptionMethod(blockEncryptionAlgorithm);
    // Claims
    jwe.setClaims(createJwtClaims(user, authorizationGrant, scopes));
    // Encryption
    if (keyEncryptionAlgorithm == KeyEncryptionAlgorithm.RSA_OAEP || keyEncryptionAlgorithm == KeyEncryptionAlgorithm.RSA1_5) {
        JSONObject jsonWebKeys = JwtUtil.getJSONWebKeys(authorizationGrant.getClient().getJwksUri());
        String keyId = new ServerCryptoProvider(cryptoProvider).getKeyId(JSONWebKeySet.fromJSONObject(jsonWebKeys), Algorithm.fromString(keyEncryptionAlgorithm.getName()), Use.ENCRYPTION);
        PublicKey publicKey = cryptoProvider.getPublicKey(keyId, jsonWebKeys, null);
        if (publicKey != null) {
            JweEncrypter jweEncrypter = new JweEncrypterImpl(keyEncryptionAlgorithm, blockEncryptionAlgorithm, publicKey);
            jwe = jweEncrypter.encrypt(jwe);
        } else {
            throw new InvalidJweException("The public key is not valid");
        }
    } else if (keyEncryptionAlgorithm == KeyEncryptionAlgorithm.A128KW || keyEncryptionAlgorithm == KeyEncryptionAlgorithm.A256KW) {
        try {
            byte[] sharedSymmetricKey = clientService.decryptSecret(authorizationGrant.getClient().getClientSecret()).getBytes(StandardCharsets.UTF_8);
            JweEncrypter jweEncrypter = new JweEncrypterImpl(keyEncryptionAlgorithm, blockEncryptionAlgorithm, sharedSymmetricKey);
            jwe = jweEncrypter.encrypt(jwe);
        } catch (Exception e) {
            throw new InvalidJweException(e);
        }
    }
    return jwe.toString();
}