Abstract
A public key cryptography protocol is designed for the authentication of documents. When applied to the authentication of postage on mail envelopes it permits the development of a universal automated and standardized mail processing and postage verification system. The mail processing automation problem is present, and the protocol solution and characteristics of the proposed cryptographic CRYPTOPOST™ system are described. Partial details of one implementation are disclosed.
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Pastor, J. CRYPTOPOST™ A cryptographic application to mail processing. J. Cryptology 3, 137–146 (1991). https://doi.org/10.1007/BF00196793
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DOI: https://doi.org/10.1007/BF00196793