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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8 with debug enabled.
package org.bouncycastle.crypto.test;
import org.bouncycastle.crypto.DataLengthException;
import org.bouncycastle.crypto.DerivationFunction;
import org.bouncycastle.crypto.digests.SHA1Digest;
import org.bouncycastle.crypto.digests.SHA256Digest;
import org.bouncycastle.crypto.digests.ShortenedDigest;
import org.bouncycastle.crypto.generators.KDF2BytesGenerator;
import org.bouncycastle.crypto.params.KDFParameters;
import org.bouncycastle.util.encoders.Hex;
import org.bouncycastle.util.test.SimpleTest;
/**
* KDF2 tests - vectors from ISO 18033.
*/
public class KDF2GeneratorTest
extends SimpleTest
{
private byte[] seed1 = Hex.decode("d6e168c5f256a2dcff7ef12facd390f393c7a88d");
private byte[] mask1 = Hex.decode(
"df79665bc31dc5a62f70535e52c53015b9d37d412ff3c119343959"
+ "9e1b628774c50d9ccb78d82c425e4521ee47b8c36a4bcffe8b8112a8"
+ "9312fc04420a39de99223890e74ce10378bc515a212b97b8a6447ba6"
+ "a8870278f0262727ca041fa1aa9f7b5d1cf7f308232fe861");
private byte[] seed2 = Hex.decode(
"032e45326fa859a72ec235acff929b15d1372e30b207255f0611b8f785d7643741"
+ "52e0ac009e509e7ba30cd2f1778e113b64e135cf4e2292c75efe5288edfda4");
private byte[] mask2 = Hex.decode(
"10a2403db42a8743cb989de86e668d168cbe604611ac179f819a3d18412e9eb456"
+ "68f2923c087c12fee0c5a0d2a8aa70185401fbbd99379ec76c663e875a60b4aacb13"
+ "19fa11c3365a8b79a44669f26fb555c80391847b05eca1cb5cf8c2d531448d33fbac"
+ "a19f6410ee1fcb260892670e0814c348664f6a7248aaf998a3acc6");
private byte[] adjustedMask2 = Hex.decode(
"10a2403db42a8743cb989de86e668d168cbe6046e23ff26f741e87949a3bba1311ac1"
+ "79f819a3d18412e9eb45668f2923c087c1299005f8d5fd42ca257bc93e8fee0c5a0d2"
+ "a8aa70185401fbbd99379ec76c663e9a29d0b70f3fe261a59cdc24875a60b4aacb131"
+ "9fa11c3365a8b79a44669f26fba933d012db213d7e3b16349");
private byte[] sha1Mask = Hex.decode(
"0e6a26eb7b956ccb8b3bdc1ca975bc57c3989e8fbad31a224655d800c46954840ff32"
+ "052cdf0d640562bdfadfa263cfccf3c52b29f2af4a1869959bc77f854cf15bd7a2519"
+ "2985a842dbff8e13efee5b7e7e55bbe4d389647c686a9a9ab3fb889b2d7767d3837ee"
+ "a4e0a2f04b53ca8f50fb31225c1be2d0126c8c7a4753b0807");
private byte[] seed3 = Hex.decode("CA7C0F8C3FFA87A96E1B74AC8E6AF594347BB40A");
private byte[] mask3 = Hex.decode("744AB703F5BC082E59185F6D049D2D367DB245C2");
private byte[] seed4 = Hex.decode("0499B502FC8B5BAFB0F4047E731D1F9FD8CD0D8881");
private byte[] mask4 = Hex.decode("03C62280C894E103C680B13CD4B4AE740A5EF0C72547292F82DC6B1777F47D63BA9D1EA732DBF386");
public KDF2GeneratorTest()
{
}
public void performTest()
{
checkMask(1, new KDF2BytesGenerator(new ShortenedDigest(new SHA256Digest(), 20)), seed1, mask1);
checkMask(2, new KDF2BytesGenerator(new ShortenedDigest(new SHA256Digest(), 20)), seed2, mask2);
checkMask(3, new KDF2BytesGenerator(new SHA256Digest()), seed2, adjustedMask2);
checkMask(4, new KDF2BytesGenerator(new SHA1Digest()), seed2, sha1Mask);
checkMask(5, new KDF2BytesGenerator(new SHA1Digest()), seed3, mask3);
checkMask(6, new KDF2BytesGenerator(new SHA1Digest()), seed4, mask4);
try
{
new KDF2BytesGenerator(new SHA1Digest()).generateBytes(new byte[10], 0, 20);
fail("short input array not caught");
}
catch (DataLengthException e)
{
// expected
}
}
private void checkMask(
int count,
DerivationFunction kdf,
byte[] seed,
byte[] result)
{
byte[] data = new byte[result.length];
kdf.init(new KDFParameters(seed, new byte[0]));
kdf.generateBytes(data, 0, data.length);
if (!areEqual(result, data))
{
fail("KDF2 failed generator test " + count);
}
}
public String getName()
{
return "KDF2";
}
public static void main(
String[] args)
{
runTest(new KDF2GeneratorTest());
}
}
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