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package org.bouncycastle.jce.provider.test;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.security.Key;
import java.security.Security;
import javax.crypto.Cipher;
import javax.crypto.CipherInputStream;
import javax.crypto.CipherOutputStream;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import org.bouncycastle.asn1.cryptopro.CryptoProObjectIdentifiers;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.util.encoders.Hex;
import org.bouncycastle.util.test.SimpleTest;
/**
* basic test class for the GOST28147 cipher
*/
public class GOST28147Test
extends SimpleTest
{
static String[] cipherTests =
{
"256",
"0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
"4e6f77206973207468652074696d6520666f7220616c6c20",
"281630d0d5770030068c252d841e84149ccc1912052dbc02",
"256",
"0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
"4e6f77206973207468652074696d65208a920c6ed1a804f5",
"88e543dfc04dc4f764fa7b624741cec07de49b007bf36065"
};
public String getName()
{
return "GOST28147";
}
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, "GOST28147");
in = Cipher.getInstance("GOST28147/ECB/NoPadding", "BC");
out = Cipher.getInstance("GOST28147/ECB/NoPadding", "BC");
out.init(Cipher.ENCRYPT_MODE, key);
in.init(Cipher.DECRYPT_MODE, key);
//
// encryption pass
//
bOut = new ByteArrayOutputStream();
cOut = new CipherOutputStream(bOut, out);
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();
byte[] bytes;
bytes = bOut.toByteArray();
if (!areEqual(bytes, output))
{
fail("GOST28147 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);
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);
if (!areEqual(bytes, input))
{
fail("GOST28147 failed decryption - expected " + new String(Hex.encode(input)) + " got " + new String(Hex.encode(bytes)));
}
}
public void testCFB(
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, "GOST28147");
in = Cipher.getInstance("GOST28147/CFB8/NoPadding", "BC");
out = Cipher.getInstance("GOST28147/CFB8/NoPadding", "BC");
byte[] iv = {1,2,3,4,5,6,7,8};
out.init(Cipher.ENCRYPT_MODE, key, new IvParameterSpec(iv));
in.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(iv));
//
// encryption pass
//
bOut = new ByteArrayOutputStream();
cOut = new CipherOutputStream(bOut, out);
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();
byte[] bytes;
bytes = bOut.toByteArray();
if (!areEqual(bytes, output))
{
fail("GOST28147 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);
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);
if (!areEqual(bytes, input))
{
fail("GOST28147 failed decryption - expected " + new String(Hex.encode(input)) + " got " + new String(Hex.encode(bytes)));
}
}
private void oidTest()
{
String[] oids = {
CryptoProObjectIdentifiers.gostR28147_gcfb.getId(),
};
String[] names = {
"GOST28147/GCFB/NoPadding"
};
try
{
byte[] data = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
IvParameterSpec ivSpec = new IvParameterSpec(new byte[8]);
for (int i = 0; i != oids.length; i++)
{
Cipher c1 = Cipher.getInstance(oids[i], "BC");
Cipher c2 = Cipher.getInstance(names[i], "BC");
KeyGenerator kg = KeyGenerator.getInstance(oids[i], "BC");
SecretKey k = kg.generateKey();
c1.init(Cipher.ENCRYPT_MODE, k, ivSpec);
c2.init(Cipher.DECRYPT_MODE, k, ivSpec);
byte[] result = c2.doFinal(c1.doFinal(data));
if (!areEqual(data, result))
{
fail("failed OID test");
}
}
}
catch (Exception ex)
{
fail("failed exception " + ex.toString(), ex);
}
}
public void performTest()
throws Exception
{
for (int i = 0; i != cipherTests.length; i += 8)
{
testECB(Integer.parseInt(cipherTests[i]),
Hex.decode(cipherTests[i + 1]),
Hex.decode(cipherTests[i + 2]),
Hex.decode(cipherTests[i + 3]));
testCFB(Integer.parseInt(cipherTests[i + 4]),
Hex.decode(cipherTests[i + 4 + 1]),
Hex.decode(cipherTests[i + 4 + 2]),
Hex.decode(cipherTests[i + 4 + 3]));
oidTest();
}
}
public static void main(
String[] args)
{
Security.addProvider(new BouncyCastleProvider());
runTest(new GOST28147Test());
}
}
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