diff options
Diffstat (limited to 'id/server/modules/moa-id-module-openID/src/main/java/at/gv/egovernment/moa/id/protocols/oauth20/json/OAuth20SHA256Signer.java')
| -rw-r--r-- | id/server/modules/moa-id-module-openID/src/main/java/at/gv/egovernment/moa/id/protocols/oauth20/json/OAuth20SHA256Signer.java | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/id/server/modules/moa-id-module-openID/src/main/java/at/gv/egovernment/moa/id/protocols/oauth20/json/OAuth20SHA256Signer.java b/id/server/modules/moa-id-module-openID/src/main/java/at/gv/egovernment/moa/id/protocols/oauth20/json/OAuth20SHA256Signer.java new file mode 100644 index 000000000..50e57bdc1 --- /dev/null +++ b/id/server/modules/moa-id-module-openID/src/main/java/at/gv/egovernment/moa/id/protocols/oauth20/json/OAuth20SHA256Signer.java @@ -0,0 +1,121 @@ +/******************************************************************************* + * Copyright 2014 Federal Chancellery Austria + * MOA-ID has been developed in a cooperation between BRZ, the Federal + * Chancellery Austria - ICT staff unit, and Graz University of Technology. + * + * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by + * the European Commission - subsequent versions of the EUPL (the "Licence"); + * You may not use this work except in compliance with the Licence. + * You may obtain a copy of the Licence at: + * http://www.osor.eu/eupl/ + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the Licence is distributed on an "AS IS" basis, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the Licence for the specific language governing permissions and + * limitations under the Licence. + * + * This product combines work with different licenses. See the "NOTICE" text + * file for details on the various modules and licenses. + * The "NOTICE" text file is part of the distribution. Any derivative works + * that you distribute must include a readable copy of the "NOTICE" text file. + ******************************************************************************/ +/** + * Copyright 2010 Google Inc. + * + * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except + * in compliance with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software distributed under the License + * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express + * or implied. See the License for the specific language governing permissions and limitations under + * the License. + * + */ +package at.gv.egovernment.moa.id.protocols.oauth20.json; + +import java.security.InvalidKeyException; +import java.security.NoSuchAlgorithmException; +import java.security.NoSuchProviderException; +import java.security.PrivateKey; +import java.security.Signature; +import java.security.SignatureException; + +import net.oauth.jsontoken.crypto.AbstractSigner; +import net.oauth.jsontoken.crypto.RsaSHA256Signer; +import net.oauth.jsontoken.crypto.SignatureAlgorithm; + +/** + * Signer that can sign byte arrays using a {@link PrivateKey} and SHA-256. <br/> + * This is something like a copy of the {@link RsaSHA256Signer}. + * + */ +public class OAuth20SHA256Signer extends AbstractSigner implements OAuthSigner { + + private final Signature signature; + private final PrivateKey signingKey; + private final OAuthSignatureAlgorithm algorithm; + + /** + * Public constructor. + * + * @param issuer + * The id of this signer, to be included in the JSON Token's envelope. + * @param keyId + * The id of the key used by this signer, to be included in the JSON Token's + * envelope. + * @param key + * the private key to be used for signing. + * @throws InvalidKeyException + * if the key is unsuitable for RSA signing. + */ + public OAuth20SHA256Signer(final String issuer, final String keyId, final PrivateKey key) throws InvalidKeyException { + super(issuer, keyId); + + this.signingKey = key; + this.algorithm = OAuth20SignatureUtil.findSignature(key); + + try { + this.signature = this.algorithm.getSignatureInstance(); + this.signature.initSign(signingKey); + } + catch (NoSuchAlgorithmException e) { + throw new IllegalStateException("Cannot get algorithm for the given private key", e); + } + catch (NoSuchProviderException e) { + throw new IllegalStateException("Cannot get algorithm for the given private key", e); + } + } + + /* + * (non-Javadoc) + * @see net.oauth.jsontoken.crypto.Signer#getSignatureAlgorithm() + */ + public SignatureAlgorithm getSignatureAlgorithm() { + // it is fine to return RS256 because we overwrite the JsonToken for the algorithm name. But + // we need the internal SHA256 which is used. + return SignatureAlgorithm.RS256; + } + + /* + * (non-Javadoc) + * @see net.oauth.jsontoken.crypto.Signer#sign(byte[]) + */ + public byte[] sign(byte[] source) throws SignatureException { + try { + signature.initSign(signingKey); + } + catch (InvalidKeyException e) { + throw new RuntimeException("key somehow became invalid since calling the constructor"); + } + signature.update(source); + return signature.sign(); + } + + public OAuthSignatureAlgorithm getOAuthSignatureAlgorithm() { + return this.algorithm; + } + +} |