Symmetric-Key Cryptography CS 161: Computer Security Prof. Vern - PowerPoint PPT Presentation

Jan 31, 2024 •139 likes •291 views

Symmetric-Key Cryptography CS 161: Computer Security Prof. Vern Paxson TAs: Devdatta Akhawe, Mobin Javed & Matthias Vallentin http://inst.eecs.berkeley.edu/~cs161/ March 10, 2011 M 1 M 2 M 3 C 1 C 2 C 3 C 2 C 3 C 1 M 1 M 2 M 3 Original

Symmetric-Key Cryptography CS 161: Computer Security Prof. Vern Paxson TAs: Devdatta Akhawe, Mobin Javed & Matthias Vallentin http://inst.eecs.berkeley.edu/~cs161/ March 10, 2011
M 1 M 2 M 3 C 1 C 2 C 3
C 2 C 3 C 1 M 1 M 2 M 3
Original image
Encrypted with ECB
M 1 M 2 M 3
M 1 M 2 M 3
Original image
Encrypted with CBC
(Nonce = Same as IV)
(Note, uses block cipher’s encryption functionality, not decryption)

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