Unit 3-Symmetric Key Crypto_Part40

Unit 3-Symmetric Key Crypto_Part40 - initialize CBC mode IV...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Unit 3 - 79 Alice’s uncompressed image, Alice ECB encrypted (TEA) Why does this happen? Same plaintext block same ciphertext! Alice Hates ECB Mode
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Unit 3 - 80 CBC Mode Blocks are “chained” together A random initialization vector, or IV , is required to
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: initialize CBC mode IV is random, but need not be secret Encryption Decryption C 0 = E(IV P , K), P 0 = IV D(C , K), C 1 = E(C 0 P 1 , K), P 1 = C 0 D(C 1 , K), C 2 = E(C 1 P 2 , K), P 2 = C 1 D(C 2 , K),...
View Full Document

This note was uploaded on 03/17/2011 for the course ECE 4472 taught by Professor Ouda during the Fall '10 term at UWO.

Page1 / 2

Unit 3-Symmetric Key Crypto_Part40 - initialize CBC mode IV...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online