May 26, 2018

Implementation of the eXtended Tiny Encryption Algorithm

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were David Wheeler and Roger Needham of the Cambridge Computer Laboratory, and the algorithm was presented in an unpublished technical report in 1997 Needham and Wheeler, 1997.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 cipher with a 128-bit key and a suggested 64 Feistel rounds i.e 32 cycles. CryptXTEA uses the recommended value of 32 cycles by default.

This module implements XTEA encryption. It supports the CryptCBC interface.

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