From: tlm@ameslab.gov (Thomas L. Marchioro II) Newsgroups: sci.math.symbolic Subject: Re: need mathematical encryption algorythm Date: 22 Aug 1996 18:38:29 GMT nop07271@telepac.pt wrote: > Scott Sidener wrote: > > > > Hi, > > > > About 2 years ago I attended a lecture at the university of > > Missouri-Rolla in which the lecturer presented a mathematical algorythm > > for encryption of data which used a public key and a private key. > > > > I am trying to find such an encryption algorythm in which I can input a > > number along with the key(s) and obtain an output number. > > > > If you can help me with this I would really appreciate it. > > > > Thanks, > > > > Scott > > These kind of algorithms use a trapdoor function wich means that the > function or procedure that makes encryption are easy but is very hard to > undo (like boiling an egg).Then it does no harm to release its details > (public key).I donīt known any site that can help you, but consulte > Sedgewick book called Algorithms from Addison Wesley or the works of > Ralph Merkle, Whitfield Diffie and Martin Hellman. > You can read also the work in the RSA system designed by Ted Rivest, Adi > Shamir and Leonard Adleman. > > Make a Net search also in cryptography news on usenet If you want to read a nice little discussion of trapdoor functions, RSA encryption, etc. take a look at the Public Key Encryption module written by Charlie Fletcher for The UCES Project. It can be found at http://uces.ameslab.gov/uces/archive/modules It even contains an interactive encryption/decryption panel, so you can see how changing the parameters effects the time it takes for the trapdoor function to act. A very nice little piece of work. Hope this proves helpful --- Tom -- Dr. Thomas L. Marchioro II Two-wheeled theoretical physicist Applied Mathematical Sciences 515-294-9779 Ames Laboratory 515-432-9142 (home) Ames, Iowa 50011 tlm@ameslab.gov Project Coordinator: Undergraduate Computational Engineering and Sciences http://uces.ameslab.gov/