Questions tagged [error-propagation]

How an error in ciphertext transmission affects the deciphered plaintext. It is often studied a 1-bit change ("bit flip") of the ciphertext. That could induce a bit flip in the plaintext, a larger plaintext alteration, or an impossibility to decipher. For a block cipher, error propagation is a characteristic of the mode of operation; e.g. a ciphertext bit flip affects 2 blocks of plaintext for CBC, all subsequent blocks for PCBC.

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Why does error propagation in CBC mode encryption affect two blocks?

From Wikipedia: Error propagation It was common to discuss the "error propagation" properties as a selection criterion for a mode of operation. It might be observed, for example, that a one-...
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What is the use of segments in Cipher Feedback Mode (CFB)

In NIST SP800-38A: Recommendation for Block Cipher Modes of Operation CFB can be used with a parameter s - the size of a data segment in bits - which determines the ...
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Is error propagation desired in modes of operation

I'm taking a very simple class on cryptography. The class is not mathematical is just the very basics. We learned about modes of operations recently (such as CBC and CTR), one of the things I learned ...
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Error propagation in CBC mode

Going through the wiki for modes of operation I see that the section error propagation says that an error in one block in the ciphertext in CBC mode only impacts two blocks. I do not quite get that. ...
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8-bit CFB in DES and AES - error propagation

I have two questions for an assignment that I need to answer in relation to Error Propagation in 8-bit CFB mode for AES and DES encryption. The questions are as follows: If there is an error in ...