XTEA, or Extended Tiny Encryption Algorithm, is a symmetric key block cipher designed for fast and secure data encryption. It was developed by David Wheeler and Roger Needham in 1997 as an improvement to the original Tiny Encryption Algorithm (TEA). XTEA addresses some of the weaknesses found in TEA and offers enhanced security. ### Key Features of XTEA: 1. **Block Size**: XTEA operates on 64-bit blocks of data.
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