![]() To decode the message, make sure the key is the same, put the encoded block into registers A and B, and then JSR XTEADecode. The PKCS7 padding is used for processing data not alligned to 8-byte block size. To use the algorithm, just put your 32-byte block into registers A and B, and then JSR XTEAEncode. VHDL implementation of the XTEA block cipher (iterative architecture). A pure JavaScript implementation of XTEA block cipher with support for ECB and CBC modes of operation. I don't know how DCPU-16 Studio compares to the CPUs in-game, but if it's similar, there's no way this is being brute forced in-game.ĭon't forget to change the value of "XTEAKey"! Seriously, if you don't, I will laugh at you and screw with your business. It takes about 5 seconds to encipher or decipher a message. In the password, tiny Encryption Algorithm, TEA is a block password that is easy to describe and execute, usually only requires little code. Stream ciphers vs block ciphers for symmetric key encryption concepts of ideal block ciphers. ![]() The cipher process is also very slow, at least in DCPU-16 Studio, where I tested it. And it'll stop the easy route - just plain sniffing and spoofing traffic. I can guarantee you it will not be secure against a brute force out of game, but with some kind of rotating key (I'll leave that as an exercise to the reader) any ciphertext should be safe for at least a little bit. ![]() ![]() The algorithm encrypts 32-byte blocks using a 128-bit key. If anyone notices a vulnerability, let me know and I'll be happy to patch it. Bear in mind, this is the first crypto code, and the first assembly, that I've ever written. I was debating whether I should share this or not, but I figured encryption doesn't do me any good if I don't have anyone to talk to. ![]()
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