java:

String key = "1234567890";

perl:

my $key = "1234567890";
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java:

byte[] bytes = new byte[256];
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java:
byte[] kbytes = key.getBytes();
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Most likely, you will want to use either an array, and put the string there (split), or just use a string and substr to access the characters within the string.

Arrays and strings are not sized in Perl.

... 1. Generate a 256 byte array 2. perl code to convert the characters from stringdata to byte. Thanks

Um, you don't need to turn a string into an array to generate an md5sum, see Digest::MD5

You also don't need an array for Crypt::Twofish

perlintro explains about perl variable types, perldata explains further, then binmode and perlunitut

No,

One probably won't need to, but I have to match an API cipher
To explain

The encryption cipher from JAVA is out of my hands and generated by an API
I somehow need to match the same cipher in perl

JAVA CODE to generate the Cipher

String key = "just a bunch of text";
byte[] bytes = new byte[256];
byte[] kbytes = key.getBytes();
for (int i = 0; i < bytes.length; i++) {
   if (i < kbytes.length) {
     bytes[i] = kbytes[i];
   } else {
     bytes[i] = (byte) i;
   }
}
byte[] md5digest = md5DigestAsBytes(bytes);
try {
   theGeneratedKey = Twofish_Algorithm.makeKey(md5digest);
   blockSize = Twofish_Algorithm.blockSize();
   catch (java.security.InvalidKeyException ike) {
     throw new Exception(Exception.E_SECURITY, "Invalid security key '
+" + new String(md5digest) + "'", ike);
   }
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Question should read:
I need to match the exact same cipher in Perl
to be able to utilize Crypt::Twofish and decrypt the data. How can I do this in Perl

This is my first post here.