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Mar 14, 2013 at 14:43 history edited Alexandre Yamajako CC BY-SA 3.0
added reference to Hash CFB
Mar 6, 2013 at 18:33 comment added Alexandre Yamajako Look at the effect of flipping a bit in the last ciphertext block, if I understood the algorithm correctly this only flips the corresponding bit in the last plaintext block which might be useful if you know the format of the message even if you don't know the content
Mar 6, 2013 at 15:40 comment added user5187 I don't understand how it would not provide authenticity since it would be difficult to generate a meaningful message without the secret. It seems to me that one should be able to state that a message is almost certainly created by someone who had the secret. Although, 'authenticity' may have a more strict definition in this field than how I understand it.
Mar 6, 2013 at 15:19 history answered Alexandre Yamajako CC BY-SA 3.0