public String decrypt(String str) throws Exception {
// return SimpleCrypto.decrypt(this.key, str);
// Decode base64 to get bytes
byte[] dec = Base64Coder.decode(str);
byte[] utf8 = dcipher.doFinal(dec);
// Decode using utf-8
return new String(utf8, "UTF8");
}
public static String sign(String s, String privkey) {
String r = null;
PrivateKey myprikey = null;
byte[] bs = Base64Coder.decode(privkey.toCharArray());
PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(bs);
try {
myprikey = KeyFactory.getInstance("DSA").generatePrivate(spec);
Signature signet = Signature.getInstance("DSA");
signet.initSign(myprikey);
byte[] b = s.getBytes();
signet.update(b, 0, b.length);
byte[] signed = signet.sign();
r = new String(Base64Coder.encode(signed));
} catch (Throwable e) {
}
return r;
}
// Test Base64Coder against sun.misc.BASE64Encoder/Decoder with
// random strings.
private static void test2() throws Exception {
System.out.println("test2 started");
sun.misc.BASE64Encoder enc = new sun.misc.BASE64Encoder();
sun.misc.BASE64Decoder dec = new sun.misc.BASE64Decoder();
java.util.Random rnd = new java.util.Random(0x538afb92);
for (int i = 0; i < 50000; i++) {
int len = rnd.nextInt(55);
byte[] b0 = new byte[len];
rnd.nextBytes(b0);
String e1 = new String(Base64Coder.encode(b0));
String e2 = enc.encode(b0);
if (!e1.equals(e2))
System.out.println(
"Error\ne1=" + e1 + " len=" + e1.length() + "\ne2=" + e2 + " len=" + e2.length());
byte[] b1 = Base64Coder.decode(e1);
byte[] b2 = dec.decodeBuffer(e2);
if (!compareByteArrays(b1, b0) || !compareByteArrays(b2, b0))
System.out.println("Decoded data not equal. len1=" + b1.length + " len2=" + b2.length);
}
System.out.println("test2 completed");
}
