English subtitles

← 02-16 Cbc Initialization Vector

Get Embed Code
1 Language

Showing Revision 1 created 04/27/2012 by Amara Bot.

  1. So the question is: suppose that Alice forgets the value that she used
  2. for the initialization vector--she encrypted some file, she has the ciphertext
  3. and she has the key. Can she still recover n, even though she forgot the IV?
  4. --the Initial Value--
  5. So the answers are: "No," she can't recover any of them;
  6. "Almost," that she can recover all of them except for the very first block;
  7. "Almost," that she can recover all of them except for the first and the second block;
  8. or that she can only recover the very last block of n.