"Travis H." <[EMAIL PROTECTED]> writes: > On 10/12/06, Leichter, Jerry <[EMAIL PROTECTED]> wrote: >> Beyond that: Are weak keys even detectable using a ciphertext-only >> attack (beyond simply trying them - but that can be done with *any* small >> set of keys)? > > Yes, generally, that's the definition of a weak key.
No, that is not the definition of a weak key. Look at DES weak keys, for example. They are simply keys for which the encryption and decryption transform are identical -- encrypting twice with the weak key returns you to the plaintext -- but they are not in some way obviously detectable without trying them. Might I suggest reading the literature on this before discussing it further? Perry --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]
