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A comment on The Cryptographic Doom Principle. Parent comment

Re:The Cryptographic Doom Principle by im3w1l on Tuesday April 14, 2015 @03:32PM (#9376695)
The output of KC is not necessarily completely random. It can contain some metadata. Like "encrypted with KC4096bits, initialization vector is 490282348992489, length of ciphertext is 26728 bytes".

When you pass this through a bad cipher it may create a characteristic fingerprint.

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Re:The Cryptographic Doom Principle by madez on Tuesday April 14, 2015 @04:03PM (#9376898)
I think you confuse cipher with protocol.

To make it clear: for me a cipher is a bijective function on arrays of a predefined length.

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Re:The Cryptographic Doom Principle by im3w1l on Saturday April 18, 2015 @06:18AM (#9398897)
What do you propose doing with the initialization vectors then? Afaik, all commonly used encryption algorithms have those, for good reason too.
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