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package org.bouncycastle.jce.provider.test;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.IOException;
import java.security.Key;
import java.security.SecureRandom;
import java.security.Security;
import java.security.spec.KeySpec;
import javax.crypto.Cipher;
import javax.crypto.CipherInputStream;
import javax.crypto.CipherOutputStream;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.SecretKeySpec;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.encoders.Hex;
import org.bouncycastle.util.test.SimpleTest;
/**
* basic test class for the Shacal2 cipher, vector from NESSIE (Test vectors set 8, vector# 0)
*/
public class Shacal2Test
extends SimpleTest
{
static String[] cipherTests =
{
"512",
"000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F202122232425262728292A2B2C2D2E2F303132333435363738393A3B3C3D3E3F",
"98BCC10405AB0BFC686BECECAAD01AC19B452511BCEB9CB094F905C51CA45430",
"00112233445566778899AABBCCDDEEFF102132435465768798A9BACBDCEDFE0F",
};
public String getName()
{
return "Shacal2";
}
private static final int KEY_SIZE_BITS = 512;
private static final byte[] TEST_BYTES = new byte[ 1536 ];
private static final char[] TEST_PASSWORD = new char[ 1536 ];
static
{
new SecureRandom().nextBytes( TEST_BYTES );
int total = TEST_PASSWORD.length;
for ( char c = 'A'; c <= 'Z' && total > 0; TEST_PASSWORD[TEST_PASSWORD.length - total] = c, c++, total-- );
}
private void blockTest()
throws Exception
{
final byte[] salt = new byte[KEY_SIZE_BITS / 8];
new SecureRandom().nextBytes(salt);
final KeySpec keySpec = new PBEKeySpec(TEST_PASSWORD, salt, 262144, KEY_SIZE_BITS);
final SecretKey secretKey = new SecretKeySpec(SecretKeyFactory.getInstance("PBKDF2", "BC").
generateSecret(keySpec).getEncoded(), "Shacal2");
final Cipher cipher = Cipher.getInstance("Shacal2/CBC/ISO10126Padding", "BC");
cipher.init(Cipher.ENCRYPT_MODE, secretKey);
final byte[] iv = cipher.getIV();
final byte[] ciphertext = cipher.doFinal(TEST_BYTES);
cipher.init(Cipher.DECRYPT_MODE, secretKey, new IvParameterSpec(iv));
final byte[] cleartext = cipher.doFinal(ciphertext);
if (!Arrays.areEqual(TEST_BYTES, cleartext))
{
fail("Invalid cleartext.");
}
}
public void testECB(
int strength,
byte[] keyBytes,
byte[] input,
byte[] output)
throws Exception
{
Key key;
Cipher in, out;
CipherInputStream cIn;
CipherOutputStream cOut;
ByteArrayInputStream bIn;
ByteArrayOutputStream bOut;
key = new SecretKeySpec(keyBytes, "Shacal2");
in = Cipher.getInstance("Shacal2/ECB/NoPadding", "BC");
out = Cipher.getInstance("Shacal2/ECB/NoPadding", "BC");
try
{
out.init(Cipher.ENCRYPT_MODE, key);
}
catch (Exception e)
{
fail("Shacal2 failed initialisation - " + e.toString(), e);
}
try
{
in.init(Cipher.DECRYPT_MODE, key);
}
catch (Exception e)
{
fail("Shacal2 failed initialisation - " + e.toString(), e);
}
//
// encryption pass
//
bOut = new ByteArrayOutputStream();
cOut = new CipherOutputStream(bOut, out);
try
{
for (int i = 0; i != input.length / 2; i++)
{
cOut.write(input[i]);
}
cOut.write(input, input.length / 2, input.length - input.length / 2);
cOut.close();
}
catch (IOException e)
{
fail("Shacal2 failed encryption - " + e.toString(), e);
}
byte[] bytes;
bytes = bOut.toByteArray();
if (!areEqual(bytes, output))
{
fail("Shacal2 failed encryption - expected " + new String(Hex.encode(output)) + " got " + new String(Hex.encode(bytes)));
}
//
// decryption pass
//
bIn = new ByteArrayInputStream(bytes);
cIn = new CipherInputStream(bIn, in);
try
{
DataInputStream dIn = new DataInputStream(cIn);
bytes = new byte[input.length];
for (int i = 0; i != input.length / 2; i++)
{
bytes[i] = (byte)dIn.read();
}
dIn.readFully(bytes, input.length / 2, bytes.length - input.length / 2);
}
catch (Exception e)
{
fail("Shacal2 failed encryption - " + e.toString(), e);
}
if (!areEqual(bytes, input))
{
fail("Shacal2 failed decryption - expected " + new String(Hex.encode(input)) + " got " + new String(Hex.encode(bytes)));
}
}
public void performTest()
throws Exception
{
for (int i = 0; i != cipherTests.length; i += 4)
{
testECB(Integer.parseInt(cipherTests[i]),
Hex.decode(cipherTests[i + 1]),
Hex.decode(cipherTests[i + 2]),
Hex.decode(cipherTests[i + 3]));
}
blockTest();
}
public static void main(
String[] args)
{
Security.addProvider(new BouncyCastleProvider());
runTest(new Shacal2Test());
}
}
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