ks@svo.UUCP (07/07/86)
This is a cross-posting to net.crypt; some readers may find it interesting... --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- /* Written 10:00 pm Jul 6, 1986 by ks@svo.UUCP in svo.UUCP:net.mail */ Okay, so I am a little slow in reading notes sometimes... /* Written 8:56 pm Jun 28, 1986 by mark@cbosgd.UUCP in svo.UUCP:net.mail */ /* ---------- "Re: reading of other people's mail" ---------- */ [...] I'd like to mention that RFC 822 has a hook in it specifically for this. If you put a header "Encrypted: foo, bar" in there, this tells the receiving user interface that the mail was encrypted with method "foo" ... At the time, I was hoping people would write some enhancements to popular EMail user interfaces (e.g. Mail/mailx, MH, etc) that would support this. So far I haven't seen any. ... If somebody out there would implement this, perhaps we could render this whole subject moot. Mark /* End of text from svo.UUCP:net.mail */ I'm considering how to write a specification for code which would transform a plaintext message into a cryptogram and back, and to provide sufficient 'hooks' to tie it into a mailer (probably MH or directly to MMDF-II). I'm semi-convinced to use a vanilla NBS-DES implementation, but I really have an aversion to block-mode ciphers. Perhaps someone can suggest something else (NOT RSA, please). I'm most interested in a classic cryptosystem which requires prior exchange of keys. If anyone is interested in this sufficiently, I can begin to put together SPECIFICATION suggestions, and a mailing list of interested individuals. Writing the code comes after writing the spec. Cheers. Kurt F. Sauer Tulsa, Oklahoma Internet: ks@a.cs.okstate.EDU UUCP: ks@svo.UUCP "Remember, '01 FE 01 FE 01 FE 01 FE' is a semi-weak DES key." -- John B. Boute' /* End of text from svo.UUCP:net.mail */