$345
The Data Encryption Standard (DES) is a symmetric-key block cipher that was widely used for data encryption. It encrypts data in 64-bit blocks and was developed by the National Institute of Standards and Technology (NIST). Although DES played a significant role in the development of cryptography, it has been found vulnerable to various attacks and has since been replaced by the Advanced Encryption Standard (AES) due to its enhanced security. DES is considered a Feistel cipher and has been a catalyst for further
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