Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1994-06-24
1997-09-16
Gregory, Bernarr E.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 4, 380 23, 380 49, 34082531, 34082534, 235380, H04L 932, H04L 900
Patent
active
056688768
ABSTRACT:
Authorization for a user to use a service is provided by a modified pager which calculates a unique response code to a transmitted challenge code based on the challenge code, an input personal identification number, and an internal key. The response code is input to a simple terminal, such as a telephone and if the unique response code is acceptable, the user may access the desired service, such as cashless transactions or long distance phone service.
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Falk Johan Per
Jonsson Bjorn Erik Rutget
Gregory Bernarr E.
Telefonaktiebolaget LM Ericsson
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