57 lines
2.2 KiB
Java
57 lines
2.2 KiB
Java
/*
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* Copyright 2013 dorkbox, llc
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package dorkbox.util.crypto.signers;
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import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
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import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
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import org.bouncycastle.crypto.Digest;
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import org.bouncycastle.crypto.Signer;
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import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
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import org.bouncycastle.crypto.signers.DSADigestSigner;
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import org.bouncycastle.crypto.signers.ECDSASigner;
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import org.bouncycastle.crypto.util.PublicKeyFactory;
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import org.bouncycastle.jcajce.provider.util.DigestFactory;
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import org.bouncycastle.operator.DefaultDigestAlgorithmIdentifierFinder;
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import org.bouncycastle.operator.DigestAlgorithmIdentifierFinder;
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import org.bouncycastle.operator.OperatorCreationException;
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import org.bouncycastle.operator.bc.BcContentVerifierProviderBuilder;
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import java.io.IOException;
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public
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class BcECDSAContentVerifierProviderBuilder extends BcContentVerifierProviderBuilder {
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public
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BcECDSAContentVerifierProviderBuilder(DigestAlgorithmIdentifierFinder digestAlgorithmFinder) {
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}
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@Override
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protected
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AsymmetricKeyParameter extractKeyParameters(SubjectPublicKeyInfo publicKeyInfo) throws IOException {
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return PublicKeyFactory.createKey(publicKeyInfo);
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}
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@Override
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protected
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Signer createSigner(AlgorithmIdentifier sigAlgId) throws OperatorCreationException {
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AlgorithmIdentifier digAlgId = new DefaultDigestAlgorithmIdentifierFinder().find(sigAlgId);
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Digest digest = DigestFactory.getDigest(digAlgId.getAlgorithm()
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.getId()); // 1.2.23.4.5.6, etc
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return new DSADigestSigner(new ECDSASigner(), digest);
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}
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}
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