Alok wrote:
[...]
lets take PKI out for a moment and talk simple block encryption,
given that you know
a. the message or the 1st few bits in it
b. the set of possible block algorithms used to encrypt
Can you determine session key?
If it would be known to be possible this would not be a algorithm in
wide use. This kind of attack is well known as "known plaintext attack".
Ted
;)
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