High security cryptosystem

Details High security cryptosystem High security cryptosystem

2005-09-06

2005-09-06

Sheikh, Ayaz (Department: 2131)

Cryptography

Key management

Key distribution

C713S152000, C713S152000, C713S170000, C380S030000, C380S044000

Reexamination Certificate

active

06940980

ABSTRACT:
A network device represents a user having a predefined associated password, a predefined associated symmetric crypto-key and a predefined associated asymmetric crypto-key, including a first private key portion, a second private key portion and a public key portion. The device includes a memory, input device and processor. The memory stores a function. The input device allows the inputting of the user password. The processor operates in either a first or second mode of operation. In the first mode of operation, the processor processes the input password in accordance with the stored function to generate the associated first private key portion, and encrypts and/or decrypts or signs a message with the generated first private key portion. In a second mode of operation, the processor processes the input password in accordance with the same stored function to generate the associated symmetric crypto-key, and encrypts and/or decrypts and/or authenticates a message with the generated symmetric crypto-key.

REFERENCES:
patent: 5511122 (1996-04-01), Atkinson
patent: 5535276 (1996-07-01), Ganesan
patent: 5737419 (1998-04-01), Ganesan
patent: 5887131 (1999-03-01), Angelo
patent: 6185685 (2001-02-01), Morgan et al.
patent: 2002/0071560 (2002-06-01), Kurn et al.
PKCS #5: Password-Based Cryptography Specification Version 2.0 (Kaliski, Sep. 2000).

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