Re: Advice needed - re Disseminating My Crypto Research Work.

Gordon Burditt <gordonb.9w6pz@xxxxxxxxxxx> wrote:

1. Is that "unbreakable security" as in "All possible plaintexts
are equally likely and having the ciphertext does not change that"?
(This is true of the one-time pad, and not of other ciphers.)

Is it really? Golly. The one-time pad is so magical, it even manages
to alter my plaintext message distribution!

I think you mean that knowing the ciphertext rather than just its length
doesn't affect an adversary's view of your plaintext message.

-- [mdw]
.

Relevant Pages

  • Re: Are natural languages secure ciphers?
    ... > produces ciphertext which is indistinguishable from random noise ... > (unless you have the correct decryption key of course). ... Only a one-time pad does that, and it does that because the algorithm is ... > is a weak cipher. ...
    (sci.crypt)
  • Re: Question re Venona
    ... it is possible to attribute ANY meaning (plaintext) you ... like provided you select a random key which supports the conversion. ... After all, given a ciphertext which is N characters in length, it should ... random key or a one-time pad, and even if the ciphertext has no ...
    (sci.crypt)
  • Re: Unbreakable code using XOR for one time pad?
    ... attack can render it useless. ... I have one nit to pick: it's not that all ciphertexts are equally likely; it's that thier probabilities do not change when given the OTP ciphertext. ... That, along with some trivial mechanics and some subtle issues such as length (which Gordon Burditt nailed), implies perfect secrecy. ...
    (sci.crypt)
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