91 lines
3.0 KiB
Java
91 lines
3.0 KiB
Java
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package net.i2p.data.i2np;
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/*
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* free (adj.): unencumbered; not under the control of others
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* Written by jrandom in 2003 and released into the public domain
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* with no warranty of any kind, either expressed or implied.
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* It probably won't make your computer catch on fire, or eat
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* your children, but it might. Use at your own risk.
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*
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*/
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.io.IOException;
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import net.i2p.util.Log;
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import net.i2p.data.DataHelper;
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import net.i2p.data.DataStructureImpl;
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import net.i2p.data.DataFormatException;
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import net.i2p.data.Hash;
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import net.i2p.data.Signature;
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import net.i2p.data.SigningPrivateKey;
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import net.i2p.data.SigningPublicKey;
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import net.i2p.crypto.DSAEngine;
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/**
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*
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* @author jrandom
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*/
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public class TunnelVerificationStructure extends DataStructureImpl {
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private final static Log _log = new Log(TunnelVerificationStructure.class);
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private Hash _msgHash;
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private Signature _authSignature;
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public TunnelVerificationStructure() {
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setMessageHash(null);
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setAuthorizationSignature(null);
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}
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public Hash getMessageHash() { return _msgHash; }
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public void setMessageHash(Hash hash) { _msgHash = hash; }
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public Signature getAuthorizationSignature() { return _authSignature; }
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public void setAuthorizationSignature(Signature sig) { _authSignature = sig; }
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public void sign(SigningPrivateKey key) {
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if (_msgHash != null) {
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Signature sig = DSAEngine.getInstance().sign(_msgHash.getData(), key);
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setAuthorizationSignature(sig);
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}
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}
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public boolean verifySignature(SigningPublicKey key) {
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if (_msgHash == null) return false;
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return DSAEngine.getInstance().verifySignature(_authSignature, _msgHash.getData(), key);
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}
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public void readBytes(InputStream in) throws DataFormatException, IOException {
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_msgHash = new Hash();
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_msgHash.readBytes(in);
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_authSignature = new Signature();
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_authSignature.readBytes(in);
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}
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public void writeBytes(OutputStream out) throws DataFormatException, IOException {
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if (_authSignature == null) {
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_authSignature = new Signature();
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_authSignature.setData(Signature.FAKE_SIGNATURE);
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}
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if ( (_msgHash == null) || (_authSignature == null) ) throw new DataFormatException("Invalid data");
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_msgHash.writeBytes(out);
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_authSignature.writeBytes(out);
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}
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public boolean equals(Object obj) {
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if ( (obj == null) || !(obj instanceof TunnelVerificationStructure))
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return false;
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TunnelVerificationStructure str = (TunnelVerificationStructure)obj;
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return DataHelper.eq(getMessageHash(), str.getMessageHash()) &&
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DataHelper.eq(getAuthorizationSignature(), str.getAuthorizationSignature());
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}
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public int hashCode() {
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if ( (_msgHash == null) || (_authSignature == null) ) return 0;
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return getMessageHash().hashCode() + getAuthorizationSignature().hashCode();
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}
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public String toString() {
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return "[TunnelVerificationStructure: " + getMessageHash() + " " + getAuthorizationSignature() + "]";
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}
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}
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