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package cz.crcs.ectester.standalone.test.base;
import java.security.InvalidKeyException;
import java.security.SecureRandom;
import java.security.Signature;
import java.security.SignatureException;
import java.security.interfaces.ECPrivateKey;
import java.security.interfaces.ECPublicKey;
/**
* @author Jan Jancar johny@neuromancer.sk
*/
public class SignatureTestable extends StandaloneTestable<SignatureTestable.SignatureStage> {
private Signature sig;
private ECPrivateKey signKey;
private ECPublicKey verifyKey;
private KeyGeneratorTestable kgt;
private byte[] data;
private byte[] signature;
private boolean verified;
public SignatureTestable(Signature sig, ECPrivateKey signKey, ECPublicKey verifyKey, byte[] data) {
this.sig = sig;
this.signKey = signKey;
this.verifyKey = verifyKey;
this.data = data;
if (data == null) {
SecureRandom random = new SecureRandom();
this.data = new byte[64];
random.nextBytes(this.data);
}
}
public SignatureTestable(Signature sig, KeyGeneratorTestable kgt, byte[] data) {
this(sig, null, null, data);
this.kgt = kgt;
}
public Signature getSig() {
return sig;
}
public byte[] getData() {
return data;
}
public byte[] getSignature() {
return signature;
}
public boolean getVerified() {
return verified;
}
@Override
public void run() {
try {
stage = SignatureStage.GetKeys;
if (kgt != null) {
signKey = (ECPrivateKey) kgt.getKeyPair().getPrivate();
verifyKey = (ECPublicKey) kgt.getKeyPair().getPublic();
}
stage = SignatureStage.InitSign;
try {
sig.initSign(signKey);
} catch (InvalidKeyException e) {
failOnException(e);
return;
}
stage = SignatureStage.UpdateSign;
try {
sig.update(data);
} catch (SignatureException e) {
failOnException(e);
return;
}
stage = SignatureStage.Sign;
try {
signature = sig.sign();
} catch (SignatureException e) {
failOnException(e);
return;
}
stage = SignatureStage.InitVerify;
try {
sig.initVerify(verifyKey);
} catch (InvalidKeyException e) {
failOnException(e);
return;
}
stage = SignatureStage.UpdateVerify;
try {
sig.update(data);
} catch (SignatureException e) {
failOnException(e);
return;
}
stage = SignatureStage.Verify;
try {
verified = sig.verify(signature);
} catch (SignatureException e) {
failOnException(e);
return;
}
ok = verified;
} catch (Exception ex) {
ok = false;
error = true;
errorCause = ex;
}
hasRun = true;
}
public enum SignatureStage {
GetKeys,
InitSign,
UpdateSign,
Sign,
InitVerify,
UpdateVerify,
Verify
}
}
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