All,
I am testing the 7.1 ENCRYPT function (Unidata). Previous to 7.1 you could
not encrypt in a language such as C# and have the Unibasic ENCRYPT function
decrypt a string. I believe that IBM has fixed this in 7.16 therefore the
test.
My problem is that (sad to say unlike C# but now I must use Java) it is hard
to find code in Java to produce the base64 encrypted string IF YOU HAVE TO
USE THE FOLLOWING PARAMETERS.
KEY = "1234ABCDEF&&ABCDEFGH1234" - Length = 24
KEY.SALT = "01234567" - Length = 8
IV = "1ABCDEF1" - Length = 8
What I am trying to do is produce an encrypted string in Java using the
above paramerters and give it to Unidata decrypt it (that program is written
and working).
I also have to base64 encode the encrypted string.
The following code is what I have so far - can someone help or point me to
another newsgroup. Notice that I have not found out how to pass in the salt
value.
String instr = "This is the string to be Encrypted";
String b64es;
String decstr;
byte[] encrypted;
byte[] toEncrypt;
byte[] fromEncrypt;
byte[] es;
byte[] myKey = "1234ABCDEF&&ABCDEFGH1234".getBytes();
byte[] iv = "1ABCDEF1".getBytes();
try
{
System.out.println("Start of Encryption Test");
// Prepare for Encryption
IvParameterSpec ivParameterSpec = new IvParameterSpec(iv);
DESedeKeySpec keySpec = new DESedeKeySpec(myKey);
SecretKeyFactory secretKeyFactory =
SecretKeyFactory.getInstance("DESede");
SecretKey secretKey = secretKeyFactory.generateSecret(keySpec);
Cipher cipher = Cipher.getInstance("DESede/CBC/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE,secretKey);
// cipher.init(arg0, secretKey, ivParameterSpec)
// Get encrypted array of bytes.
toEncrypt = instr.getBytes();
// Encrypts byte data
encrypted = cipher.doFinal(toEncrypt);
int keySizeInBits = keySpec.DES_EDE_KEY_LEN;
System.out.println("Effective key size is " + keySizeInBits + "
bits.\n");
// get the cipher algorithm
String alg = cipher.getAlgorithm();
System.out.println("Algorithm " + alg);
//
// // get the Key
// System.out.println("Input Key : " + new String(key.getEncoded()));
//
// // get the IV
// System.out.println("Input IV : " + new String(cipher.getIV()) +
"\n");
//
// Base 64 Encode the encrypted string
b64es = new BASE64Encoder().encodeBuffer(encrypted);
System.out.println("Base64 encrypted output : " + b64es);
// decrypt
// Convert base64 encrypted string to encrypted byte array
es = new BASE64Decoder().decodeBuffer(b64es);
// Initializes thE cipher
cipher.init(Cipher.DECRYPT_MODE,secretKey);
// decrypt byte array
fromEncrypt = cipher.doFinal(es);
// convert byte array into string
decstr = new String(fromEncrypt);
System.out.println("Input string : " + instr);
System.out.println("Output string : " + decstr);
}
catch (Exception e)
{
System.out.println("Error : " + e);
}
}
}
Thanks
george
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