Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1983-07-18
1987-04-21
Boudeau, Leo H.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
101 71, 235101, 235462, 382 57, 382 1, 400104, 380 51, G06F 900
Patent
active
046602216
ABSTRACT:
A system for the metering of encrypted postage and similar indicia includes a device for printing such indicia and a device for reading such indicia. The printing is accomplished with a bar-code printer driven by signals obtained from a keyboard and from an encryption circuit. The reading is accomplished with a bar-code reader to retreive the characters, and permit the comparison of the separated coded data with a reference code to determine the accuracy of the printed material. Thereby, forgery and alteration is inhibited. Both the data and the code are imprinted by a bar-code indicia, a portion of the code being set aside for the data and a portion of the bar-code being set aside for encryption purposes. Thereby, the two portions can readily be separated to allow for automatic reading of the bar code for extraction of the message, while also allowing for automatic verification by use of the encrypted material.
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Garriss, "Bar-Coded Delimiters for OCR-Coded Information", IBM Tech. Disc. Bulletin, vol. 20, No. 11B, Arp. 1978, p. 4891.
Boudeau Leo H.
Mancuso Joseph
Pitchenik David E.
Pitney Bowes Inc.
Scolnick Melvin J.
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