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Block cipher

Block cipher

#block-cipher
0 followers·3 articles

Block cipher

#block-cipher·0 followers·3 articles
Block cipher
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psk-study.hashnode.dev·Mar 17, 2025
Mar 17, 2025

Block cipher - Modes of Operation

What is Mode? A mode of operation in cryptography refers to the method used to apply a block cipher algorithm (such as AES or DES) to encrypt or decrypt larger amounts of data. Since block ciphers operate on fixed-size blocks (e.g., 128-bit blocks in...

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Cryptography Algorithms
Block cipher
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psk-study.hashnode.dev·Mar 17, 2025
Mar 17, 2025

Symmetric key algorithm - (2) AES

AES is a symmetric key encryption algorithm that has replaced DES due to its higher security and efficiency. 1. Block Cipher Structure AES encrypts fixed-size 128-bit blocks of data. Unlike DES (which uses a Feistel structure), AES uses a substitut...

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Cryptography Algorithms
aes
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psk-study.hashnode.dev·Mar 17, 2025
Mar 17, 2025

Symmetric key algorithm - (1) DES

(1)Characteristics of DES Block Cipher: Encrypts data in fixed-size 64-bit blocks. Key Length: Uses a 56-bit key, making it vulnerable to brute-force attacks. Feistel Structure: Based on a Feistel network with 16 rounds of encryption . Subkeys Ge...

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Cryptography Algorithms
Symmetrickey

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