Cryptography – Particular algorithmic function encoding
Patent
1994-11-30
1997-04-29
Tarcza, Thomas H.
Cryptography
Particular algorithmic function encoding
380 29, 380 30, 380 25, H04L 932
Patent
active
056256957
ABSTRACT:
The invention relates to a process for generating digital signatures from portable apparatuses (A1, A2, . . . Ai . . . An) of the microprocessor-based card type, including means for computation, communication and retention of data, which means comprise at least one electrically programmable non-volatile memory, consisting in preparing enciphered data constituting coupons and loading these coupons into the non-volatile memories so as later to use these coupons in order to sign a message sent by a verifier device. According to the process, the preparation of the coupons is carried out by a certified central authority B or by the card itself.
REFERENCES:
patent: 4935962 (1990-06-01), Austin
patent: 5068894 (1991-11-01), Hoppe
patent: 5434919 (1995-07-01), Chaum
T. Okamoto et al., On Comparison of Practical Digital Signature Schemes, NTT Review, Jan. 1993, vol. 5, No. 1.
B. Schneier, Digital Signatures, BYTE, Nov. 1993, vol. 18, No. 12, pp. 309-312.
S.M. Yen et al., New Digital Signatures Scheme Based on Discrete Logarithm, Electronic Letters, Nov. 1993, vol. 29, No. 12, pp. 1120-1121.
M'Raihi David
Naccache David
Gemplus Card International
Laufer Pinchus M.
Tarcza Thomas H.
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