Article View: sci.crypt
Article #2155Re: Limits on the Use of Cryptography?
From: Uri Blumenthal
Date: Mon, 14 Dec 1992 20:36
Date: Mon, 14 Dec 1992 20:36
18 lines
1491 bytes
1491 bytes
In article <Bz886x.Jw5@ddsw1.mcs.com>, karl@ddsw1.mcs.com (Karl Denninger) writes: |> >Iain McCord raises the possibiity that the police will "plant" an |> >encrypted file, or worse, plant an incriminating encrypted file of |> >their own design.. |> |> With a public key system you can be ABSOLUTELY certain that a particular |> ciphertext was created with one key if you can decode it with the other. |> Therefore, if the keys are not compromised you can, with certainty, |> prove whether or not it was written by the individual in question. Well, but HOW can you know, that your keys are not compromised? You certainly HOPE so, but... ['twas written once: "Only insurance policy gives you 100% guarantee" :-] -- Regards, Uri. uri@watson.ibm.com ------------ <Disclaimer>
Technical Details
Message-ID:
<1992Dec14.203614.63816@watson.ibm.com>Path:
arc1-ca.pugleaf.net!sparky!uunet!newsgate.watson.ibm.com!yktnews!admin!aixproj!uriReferences:
<2229.517.uupcb@grapevine.lrk.ar.us> <11283@baird.cs.strath.ac.uk> <1992Dec10.182022.9173@netcom.com> <Bz886x.Jw5@ddsw1.mcs.com>Show Full Headers
Complete Article Headers
Newsgroups: sci.crypt,alt.society.civil-liberty Path: arc1-ca.pugleaf.net!sparky!uunet!newsgate.watson.ibm.com!yktnews!admin!aixproj!uri From: uri@watson.ibm.com (Uri Blumenthal) Subject: Re: Limits on the Use of Cryptography? Sender: news@watson.ibm.com (NNTP News Poster) Message-ID: <1992Dec14.203614.63816@watson.ibm.com> Date: Mon, 14 Dec 1992 20:36:14 GMT Reply-To: uri@watson.ibm.com Disclaimer: This posting represents the poster's views, not necessarily those of IBM References: <2229.517.uupcb@grapevine.lrk.ar.us> <11283@baird.cs.strath.ac.uk> <1992Dec10.182022.9173@netcom.com> <Bz886x.Jw5@ddsw1.mcs.com> Nntp-Posting-Host: aixproj.watson.ibm.com Organization: You care? Why? Lines: 18