---
title: "Discussion on \"Symmetric key algorithm - (1) DES\" | Hashnode"
description: "Discussion on \"Symmetric key algorithm - (1) DES\". (1)Characteristics of DES\n\nBlock Cipher: Encrypts data in fixed-size 64-bit blocks.\n\nKey Length: Uses a 56-bit key, making it vulnerable to brute-force attacks.\n\nFeistel Structure: Based on a Feistel network with 16 rounds of encryption .\n\nSubkeys Ge..."
url: "https://hashnode.com/posts/symmetric-key-algorithm-1-des/67d8018eb432fbcc25234c57"
---

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# [Symmetric key algorithm - (1) DES](https://psk-study.hashnode.dev/symmetric-key-algorithm-1-des?utm_source=hashnode&utm_medium=feed)

(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...

Mar 17, 2025 · 6 min read · psk-study.hashnode.dev  
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