58 lines
2.1 KiB
Java
58 lines
2.1 KiB
Java
package org.jivesoftware.smackx.ikey_ox;
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import org.bouncycastle.bcpg.ArmoredOutputStream;
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import org.bouncycastle.openpgp.PGPException;
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import org.bouncycastle.openpgp.PGPSecretKeyRing;
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import org.bouncycastle.openpgp.PGPSignature;
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import org.bouncycastle.util.io.Streams;
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import org.jivesoftware.smackx.ikey.IkeySignatureCreationMechanism;
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import org.jivesoftware.smackx.ikey.IkeyType;
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import org.pgpainless.PGPainless;
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import org.pgpainless.encryption_signing.EncryptionStream;
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import org.pgpainless.key.protection.SecretKeyRingProtector;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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public class OxIkeySignatureCreationMechanism implements IkeySignatureCreationMechanism {
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private final PGPSecretKeyRing ourIdentityKey;
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private final SecretKeyRingProtector secretKeyRingProtector;
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public OxIkeySignatureCreationMechanism(PGPSecretKeyRing ourIdentityKey,
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SecretKeyRingProtector secretKeyRingProtector) {
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this.ourIdentityKey = ourIdentityKey;
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this.secretKeyRingProtector = secretKeyRingProtector;
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}
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@Override
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public byte[] createSignature(byte[] data) throws IOException {
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try {
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ByteArrayOutputStream dummyOutputStream = new ByteArrayOutputStream();
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EncryptionStream encryptionStream = PGPainless.createEncryptor()
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.onOutputStream(dummyOutputStream)
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.doNotEncrypt()
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.createDetachedSignature()
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.signWith(secretKeyRingProtector, ourIdentityKey)
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.noArmor();
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ByteArrayInputStream dataIn = new ByteArrayInputStream(data);
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Streams.pipeAll(dataIn, encryptionStream);
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encryptionStream.close();
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dataIn.close();
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PGPSignature signature = encryptionStream.getResult().getSignatures()
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.iterator().next();
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return signature.getEncoded();
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} catch (PGPException e) {
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throw new IOException(e);
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}
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}
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@Override
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public IkeyType getType() {
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return IkeyType.OX;
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}
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}
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