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package org.spongycastle.jce.provider.test;
import org.spongycastle.util.encoders.Hex;
import org.spongycastle.util.test.SimpleTest;
import org.spongycastle.util.test.TestFailedException;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.security.Key;
public abstract class BaseBlockCipherTest
extends SimpleTest
{
String algorithm;
BaseBlockCipherTest(
String algorithm)
{
this.algorithm = algorithm;
}
public String getName()
{
return algorithm;
}
protected void oidTest(String[] oids, String[] names, int groupSize)
throws Exception
{
byte[] data = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
IvParameterSpec ivSpec = new IvParameterSpec(new byte[16]);
for (int i = 0; i != oids.length; i++)
{
Cipher c1 = Cipher.getInstance(oids[i], "SC");
Cipher c2 = Cipher.getInstance(names[i], "SC");
KeyGenerator kg = KeyGenerator.getInstance(oids[i], "SC");
SecretKey k = kg.generateKey();
if (names[i].indexOf("/ECB/") > 0)
{
c1.init(Cipher.ENCRYPT_MODE, k);
c2.init(Cipher.DECRYPT_MODE, k);
}
else
{
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");
}
if (k.getEncoded().length != (16 + ((i / groupSize) * 8)))
{
fail("failed key length test");
}
}
}
protected void wrapOidTest(String[] oids, String name)
throws Exception
{
byte[] data = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
for (int i = 0; i != oids.length; i++)
{
Cipher c1 = Cipher.getInstance(oids[i], "SC");
Cipher c2 = Cipher.getInstance(name, "SC");
KeyGenerator kg = KeyGenerator.getInstance(oids[i], "SC");
SecretKey k = kg.generateKey();
c1.init(Cipher.WRAP_MODE, k);
c2.init(Cipher.UNWRAP_MODE, k);
Key wKey = c2.unwrap(c1.wrap(new SecretKeySpec(data, algorithm)), algorithm, Cipher.SECRET_KEY);
if (!areEqual(data, wKey.getEncoded()))
{
fail("failed wrap OID test");
}
if (k.getEncoded().length != (16 + (i * 8)))
{
fail("failed key length test");
}
}
}
protected void wrapTest(
int id,
String wrappingAlgorithm,
byte[] kek,
byte[] in,
byte[] out)
throws Exception
{
Cipher wrapper = Cipher.getInstance(wrappingAlgorithm, "SC");
wrapper.init(Cipher.WRAP_MODE, new SecretKeySpec(kek, algorithm));
try
{
byte[] cText = wrapper.wrap(new SecretKeySpec(in, algorithm));
if (!areEqual(cText, out))
{
fail("failed wrap test " + id + " expected " + new String(Hex.encode(out)) + " got " + new String(Hex.encode(cText)));
}
}
catch (TestFailedException e)
{
throw e;
}
catch (Exception e)
{
fail("failed wrap test exception " + e.toString(), e);
}
wrapper.init(Cipher.UNWRAP_MODE, new SecretKeySpec(kek, algorithm));
try
{
Key pText = wrapper.unwrap(out, algorithm, Cipher.SECRET_KEY);
if (!areEqual(pText.getEncoded(), in))
{
fail("failed unwrap test " + id + " expected " + new String(Hex.encode(in)) + " got " + new String(Hex.encode(pText.getEncoded())));
}
}
catch (Exception e)
{
fail("failed unwrap test exception " + e.toString(), e);
}
}
}
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