3DES
Dublin Core
Title
3DES
Subject
Triple Data Encryption Standard
Description
The Triple Data Encryption Standard was derived (3DES) was derived from DES, when DES began to falter as a secure form of encryption and before AES was developed.
As suggested by the title, it works by running DES three times with three different 56-bit keys. Key 1 encrypts the plaintext, key 2 decrypts the ciphertext, and key 3 encrypts the decrypted cipher text. The reason this is stronger than DES alone is due to the use of three keys.
However, it's vulnerable to known plaintext attacks and meet-in-the-middle attacks for having the same algorithm repeated a few times.
As suggested by the title, it works by running DES three times with three different 56-bit keys. Key 1 encrypts the plaintext, key 2 decrypts the ciphertext, and key 3 encrypts the decrypted cipher text. The reason this is stronger than DES alone is due to the use of three keys.
However, it's vulnerable to known plaintext attacks and meet-in-the-middle attacks for having the same algorithm repeated a few times.
Creator
National Institute of Standards and Technology
Source
https://www.comparitech.com/blog/information-security/3des-encryption/
Publisher
Comparitech
Date
1999
Contributor
Josh Lake
Relation
http://www.crypto-it.net/eng/attacks/meet-in-the-middle.html
Format
Encryption
Language
English
Type
Encryption
Still Image Item Type Metadata
Original Format
Encryption
Collection
Citation
National Institute of Standards and Technology, “3DES,” Ciphers and Encryption, accessed April 24, 2024, https://crypto.omeka.net/items/show/15.