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package org.bouncycastle.jce.provider.test;
import java.security.NoSuchAlgorithmException;
import java.security.Security;
import java.util.ArrayList;
import java.util.List;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.Mac;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import org.bouncycastle.crypto.generators.Poly1305KeyGenerator;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.encoders.Hex;
import org.bouncycastle.util.test.SimpleTest;
import org.bouncycastle.util.test.TestFailedException;
public class Poly1305Test
extends SimpleTest
{
private static final byte[] MASTER_KEY = Hex
.decode("95cc0e44d0b79a8856afcae1bec4fe3c01bcb20bfc8b6e03609ddd09f44b060f");
public String getName()
{
return "Poly1305";
}
public void performTest()
throws Exception
{
checkRegistrations();
}
private void checkRegistrations()
throws Exception
{
List missingMacs = new ArrayList();
List missingKeyGens = new ArrayList();
String[] ciphers = new String[]{"AES", "NOEKEON", "Twofish", "CAST6", "SEED", "Serpent", "RC6", "CAMELLIA"};
String[] macs = new String[]{
"4bb5e21dd13001ed5faccfcfdaf8a854",
"6d601be3d5ebbb9972a64ed3223d913d",
"211195296d9afc7b35a1223a79487c87",
"f328857a1b653684e73760c804c55b1d",
"21cd8adb23ca84eb4dbb12780595bf28",
"211195296d9afc7b35a1223a79487c87",
"db86de7b1fcae429753d68b1263d7ca0",
"11918174f33a2f278fb86554da094112"};
for (int i = 0; i < ciphers.length; i++)
{
String cipherName = ciphers[i];
Cipher cipher;
try
{
cipher = Cipher.getInstance(cipherName, "BC");
} catch (Exception e)
{
System.err.println(cipherName + ": " + e.getMessage());
continue;
}
int blocksize;
try
{
blocksize = cipher.getBlockSize();
} catch (Exception e)
{
System.err.println(cipherName + ": " + e.getMessage());
continue;
}
// Poly1305 is defined over 128 bit block ciphers
if (blocksize == 16)
{
String macName = "Poly1305-" + cipherName;
String macNameAlt = "Poly1305" + cipherName;
// Check we have a Poly1305 registered for each name
checkMac(macName, missingMacs, missingKeyGens, macs[i]);
checkMac(macNameAlt, missingMacs, missingKeyGens, macs[i]);
}
}
if (missingMacs.size() != 0)
{
fail("Did not find Poly1305 registrations for the following ciphers: " + missingMacs);
}
if (missingKeyGens.size() != 0)
{
fail("Did not find Poly1305 KeyGenerator registrations for the following macs: " + missingKeyGens);
}
}
private void checkMac(String name, List missingMacs, List missingKeyGens, String macOutput)
{
try
{
try
{
KeyGenerator kg = KeyGenerator.getInstance(name);
SecretKey key = kg.generateKey();
try
{
Poly1305KeyGenerator.checkKey(key.getEncoded());
} catch (IllegalArgumentException e)
{
fail("Generated key for algo " + name + " does not match required Poly1305 format.");
}
try
{
Mac mac = Mac.getInstance(name);
mac.init(new SecretKeySpec(MASTER_KEY, name), new IvParameterSpec(new byte[16]));
mac.update(new byte[128]);
byte[] bytes = mac.doFinal();
if (!Arrays.areEqual(bytes, Hex.decode(macOutput)))
{
fail("wrong mac value computed for " + name, macOutput, new String(Hex.encode(bytes)));
}
} catch (NoSuchAlgorithmException e)
{
missingMacs.add(name);
}
} catch (NoSuchAlgorithmException e)
{
missingKeyGens.add(name);
}
} catch (TestFailedException e)
{
throw e;
} catch (Exception e)
{
fail("Unexpected error", e);
}
}
public static void main(String[] args)
{
Security.addProvider(new BouncyCastleProvider());
runTest(new Poly1305Test());
}
}
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