Encryption method and system for portable data

Details Encryption method and system for portable data Encryption method and system for portable data

1995-06-23

1997-04-22

Barron, Jr., Gilberto

Cryptography

Cryptanalysis

380 21, 380 25, H04L 932, G06F 306

Patent

active

056235461

ABSTRACT:
A system and method allows portable, encrypted data to be accessible through multiple hosts, including new hosts (14), without requiring a secure link to the new hosts. A split key encryption system encrypts (52) data and stores the encrypted data on a portable device (10). A split of the encryption key is stored (54) in the portable device (10), and another split of the key is stored (54) in a home host (12) . A password-modified key is then made (58) by combining a password with the encryption key. This password-modified key is then reduced (58), with one split being stored on the host (12) and another split stored on the portable device (10) . Data can be accessed with a new host (14) by transferring (78) the host password-modified split to the new host (14) and entering (80) the password into the portable device (10).

REFERENCES:
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patent: 5060263 (1991-10-01), Bosen et al.
patent: 5150407 (1992-09-01), Chan
patent: 5214698 (1993-05-01), Smith, Sr. et al.
patent: 5384847 (1995-01-01), Hendrickson et al.
patent: 5469564 (1995-11-01), Junya

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