RC5 block cipher implement in PHP and Javascript

In cryptography, RC5 is a symmetric-key block cipher notable for its simplicity. Designed by Ronald Rivest in 1994. RC5 encryption and decryption both expand the random key into 2(r+1) words that will be used sequentially (and only once each) during the encryption and decryption processes. All of the below comes from Rivest's revised paper on RC5. Source: https://en.wikipedia.org/wiki/RC5 We provide some function...

XXTEA block cipher implement in PHP and Javascript

In cryptography, Corrected Block TEA (often referred to as XXTEA) is a block cipher designed to correct weaknesses in the original Block TEA. Source: https://en.wikipedia.org/wiki/XXTEA We provide some function implement in PHP and Javascript: PHP <?php /** * @author www.Tutorialspots.com * @copyright 2017 */ /** * Corrected Block TEA implement in PHP * @param $v: n word data vector * @param$key: 4 word key ...

XTEA block cipher implement in PHP and Javascript

In cryptography, XTEA (eXtended TEA) is a block cipher designed to correct weaknesses in TEA. The cipher's designers were David Wheeler and Roger Needham of the Cambridge Computer Laboratory, and the algorithm was presented in an unpublished technical report in 1997 (Needham and Wheeler, 1997). It is not subject to any patents. Like TEA, XTEA is a 64-bit block Feistel...

Test vectors TEA

Read first: TEA block cipher implement in PHP and Javascript We provide some test vectors for TEA: Test vector| Hex Test vector | Test key | Hex Test key |...

TEA block cipher implement in PHP and Javascript

In cryptography, the Tiny Encryption Algorithm (TEA) is a block cipher notable for its simplicity of description and implementation, typically a few lines of code. It was designed by David Wheeler and Roger Needham of the Cambridge Computer Laboratory; it was first presented at the Fast Software Encryption workshop in Leuven in 1994, and first published in the proceedings...

Spritz stream cipher implement in PHP and Javascript

Ron Rivest and Jacob Schuldt have proposed replacing RC4 with an improved and slightly modified version dubbed Spritz. <?php /** * @author www.Tutorialspots.com * @copyright 2017 */ function spritz($str,$key) { //Key-scheduling algorithm (KSA) for ($s = array(),$i = 0; $i < 256;$i++) $s =$i; ...