Accession Number : ADA262680


Title :   Cryptography: It's Not Just For Electronic Mail Anymore


Corporate Author : CARNEGIE-MELLON UNIV PITTSBURGH PA SCHOOL OF COMPUTER SCIENCE


Personal Author(s) : Tygar, J D ; Yee, Bennet


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a262680.pdf


Report Date : 01 Mar 1993


Pagination or Media Count : 23


Abstract : This report extends cryptographic techniques to the protection of the application of stamps for mail. We show how to provide electronic stamps (using off-the-shelf bar code technology to represent a cryptographic message) to use in a fully integrated franking system that provides protection against: (1) Tampering with postage meter to given the user additional credit; (2) Forged or copied electronic stamps; (3) Unauthorized use of a postage meter; and (4) Stolen postage meters. The report relates the question of electron stamps to broader issues in electronic currency and secure coprocessors.


Descriptors :   *CRYPTOGRAPHY , *ELECTRONIC MAIL , PROTECTION , POSTAGE METERS , MESSAGE PROCESSING , ELECTRONIC SECURITY


Subject Categories : Defense Systems
      Telemetry


Distribution Statement : APPROVED FOR PUBLIC RELEASE