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Des And 3des (SECURE)

56-bit effective key length (plus 8 parity bits for a total of 64 bits). Block Size: 64 bits. Process Steps:

Developed in the 1970s, DES was the global standard for decades before its 56-bit key became vulnerable to modern brute-force attacks. DES and 3DES

Uses a Feistel network consisting of 16 rounds of processing. 56-bit effective key length (plus 8 parity bits