Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1994-06-09
1996-11-19
Cangialosi, Salvatore
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 25, 380 21, H04L 900
Patent
active
055771211
ABSTRACT:
A transaction system and method of conducting a transaction between in integrated circuit (IC) card and a transaction terminal which includes a security module comprises establishing communication between the terminal and the IC card. Separate session keys are generated in the IC card using data stored in the IC card and a code associated with the particular IC card and the security module using data stored in the security module, and the code associated with the particular IC card. The session key generated by the IC card is used to encrypt data using an encryption algorithm to obtain a first result and the session key generated by the security module is used to encrypt the same data using the same encryption algorithm to obtain a second result. The first and second results are compared to enable the terminal to conduct the transaction only if the comparison establishes that the first result and the second result are identical. In one embodiment, the invention further comprises generating a transaction signature by the IC card using transaction data and data stored in the IC card, generating a transaction signature by the security module using transaction data and data stored in the security module and storing the transaction signatures generated by the IC card and the security module for creating an audit trail for the transaction.
REFERENCES:
patent: Re33571 (1991-04-01), Takahashi
patent: 3833885 (1974-09-01), Gentile et al.
patent: 3971916 (1976-07-01), Moreno
patent: 4011433 (1977-03-01), Tateisi et al.
patent: 4023013 (1977-05-01), Kinker
patent: 4068213 (1978-01-01), Nakamura et al.
patent: 4197986 (1980-04-01), Nagata
patent: 4361754 (1982-11-01), Hoskinson et al.
patent: 4518852 (1985-05-01), Stockburger et al.
patent: 4575621 (1986-03-01), Dreifus
patent: 4590365 (1986-05-01), Okada
patent: 4629874 (1986-12-01), Pugsley et al.
patent: 4683372 (1987-07-01), Matsumoto
patent: 4709137 (1987-11-01), Yoshida
patent: 4727244 (1988-02-01), Nakano et al.
patent: 4746788 (1988-05-01), Kawana
patent: 4802218 (1989-01-01), Wright et al.
patent: 4804825 (1989-02-01), Bitoh
patent: 4816651 (1989-03-01), Ishording
patent: 4853526 (1989-08-01), Effing
patent: 4877947 (1989-10-01), Mori
patent: 4900903 (1990-02-01), Wright et al.
patent: 4906828 (1990-03-01), Halpern
patent: 4959788 (1990-09-01), Nagata et al.
patent: 5033021 (1991-07-01), Barakat
patent: 5036461 (1991-07-01), Elliott et al.
patent: 5048085 (1991-09-01), Abraham et al.
patent: 5140517 (1992-08-01), Nagata et al.
patent: 5144115 (1992-09-01), Yoshida
patent: 5148481 (1992-09-01), Abraham et al.
patent: 5175416 (1992-12-01), Mansvelt et al.
patent: 5191193 (1993-03-01), Le Roux
patent: 5202922 (1993-04-01), Iijima
patent: 5222140 (1993-06-01), Beller
patent: 5227612 (1993-07-01), Le Roux
patent: 5227613 (1993-07-01), Takagi et al.
patent: 5239166 (1993-08-01), Graves
patent: 5255182 (1993-10-01), Adams
patent: 5288978 (1994-02-01), Iijima
patent: 5293029 (1994-03-01), Iijima et al.
patent: 5295188 (1994-03-01), Wilson
patent: 5299263 (1994-03-01), Beller
patent: 5302811 (1994-04-01), Fukatsu
patent: 5339402 (1994-08-01), Ueda
patent: 5352876 (1994-10-01), Watanabe
patent: 5357563 (1994-10-01), Hamilton
patent: 5367149 (1994-11-01), Takahira
patent: 5367150 (1994-11-01), Kitta
patent: 5379344 (1995-01-01), Larsson
patent: 5387784 (1995-02-01), Sarradin
patent: 5401950 (1995-03-01), Yoshida
patent: 5408633 (1995-04-01), Katsumura
patent: 5409092 (1995-04-01), Itako
patent: 5428684 (1995-06-01), Akiyama
patent: 5434395 (1995-07-01), Storck
patent: 5438184 (1995-08-01), Roberts
patent: 5440108 (1995-08-01), Tran
patent: 5445295 (1995-08-01), Brown
patent: 5450938 (1995-09-01), Rademacher
patent: 5461217 (1995-10-01), Claus
Davis Terry L.
Hart James A.
Imperia Vincent A.
Love Michael
O'Malley Michael F.
Cangialosi Salvatore
Electronic Payment Services, Inc.
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