Splitting knowledge of a password

Details Splitting knowledge of a password Splitting knowledge of a password

2005-10-25

2005-10-25

Zand, Kambiz (Department: 2132)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

C713S184000, C713S152000, C713S152000, C380S044000, C705S071000, C705S018000

Reexamination Certificate

active

06959394

ABSTRACT:
A password is split into a plurality of pieces. The pieces are stored at different remote servers. The different remote servers have the property that together they can determine that the user has knowledge of the correct password. If any subset of the servers are compromised, the compromised subset cannot convince any remaining servers that they know the password.

REFERENCES:
patent: 2002/0067832 (2002-06-01), Jablon
Jablon, David P. Systems, Methods and Software for Remote Password Authentication using multiple servers. Jun. 5, 2000 U.S. Appl. No. 60/209258.
Jablon, David P. Systems, Methods and Software for Remote Password Authentication using multiple servers. Jul. 3, 2000 U.S. Appl. No. 60/215835.
“Server-Assisted Generation of a Strong Secret from a Password”, Ford et al., IEEE 2000.

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