package org.bouncycastle.crypto.test;
import org.bouncycastle.crypto.CipherParameters;
import org.bouncycastle.crypto.StreamCipher;
import org.bouncycastle.util.encoders.Hex;
import org.bouncycastle.util.test.SimpleTestResult;
import org.bouncycastle.util.test.Test;
import org.bouncycastle.util.test.TestResult;
/**
* a basic test that takes a stream cipher, key parameter, and an input
* and output string.
*/
public class StreamCipherVectorTest
implements Test
{
int id;
StreamCipher cipher;
CipherParameters param;
byte[] input;
byte[] output;
public StreamCipherVectorTest(
int id,
StreamCipher cipher,
CipherParameters param,
String input,
String output)
{
this.id = id;
this.cipher = cipher;
this.param = param;
this.input = Hex.decode(input);
this.output = Hex.decode(output);
}
public String getName()
{
return cipher.getAlgorithmName() + " Vector Test " + id;
}
public TestResult perform()
{
cipher.init(true, param);
byte[] out = new byte[input.length];
cipher.processBytes(input, 0, input.length, out, 0);
if (!isEqualArray(out, output))
{
return new SimpleTestResult(false,
getName() + ": failed - " + "expected " + new String(Hex.encode(output)) + " got " + new String(Hex.encode(out)));
}
cipher.init(false, param);
cipher.processBytes(output, 0, output.length, out, 0);
if (!isEqualArray(input, out))
{
return new SimpleTestResult(false, getName() + ": failed reversal");
}
return new SimpleTestResult(true, getName() + ": OKAY");
}
private boolean isEqualArray(
byte[] a,
byte[] b)
{
if (a.length != b.length)
{
return false;
}
for (int i = 0; i != a.length; i++)
{
if (a[i] != b[i])
{
return false;
}
}
return true;
}
}