One-way data conversion apparatus and device authentication syst

Details One-way data conversion apparatus and device authentication syst One-way data conversion apparatus and device authentication syst

1997-10-31

2000-04-11

Swann, Tod R.

Cryptography

Key management

Having particular key generator

380168, H04L 900

Patent

active

060496118

ABSTRACT:
The verifier apparatus 50 includes a random number generation unit 51 that generates a 2n-bit random number, a separator unit 52 that separates the random number into two sets of n-bit data, a data conversion module 53 that converts one set of separated data using the other set of separated data as a key, and a comparator unit 54 that judges whether the converted result matches claimant data sent back from the claimant apparatus 60. The claimant apparatus 60 includes a separator unit 61 and a data conversion module 62 that have the same functions as the separator unit 52 and the data conversion module 53 in the verifier apparatus 50. The claimant apparatus 60 generates n-bit claimant data from the 2n-bit random number generated by the verifier apparatus 50, and sends the generated claimant data to the verifier apparatus 50.

REFERENCES:
patent: 5721778 (1998-02-01), Kubota et al.
patent: 5754649 (1998-05-01), Ryan et al.
patent: 5907619 (1999-05-01), Davis
patent: 5917910 (1999-06-01), Ishiguro et al.
patent: 5960086 (1999-09-01), Atalla

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