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Data Encryption Standard Definition: Data Encryption Standard (DES) is a symmetric key algorithm that encrypts and decrypts data in 64-bit blocks using a 56-bit key.
Data Encryption Standard (DES) is a symmetric-key block cipher algorithm used to encrypt and decrypt data. It operates on a 64-bit block of plaintext using a 56-bit key. DES uses a Feistel network structure with multiple rounds of substitutions and permutations to provide confidentiality and secure data transmission. Despite its widespread use in the past, DES is now considered insecure due to its relatively short key length, making it vulnerable to brute force attacks.