System, method and program for protecting communication

Details System, method and program for protecting communication System, method and program for protecting communication

2004-05-20

2009-02-03

Vu, KimYen (Department: 2135)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S168000, C726S003000, C726S007000

Reexamination Certificate

active

07487353

ABSTRACT:
A method for transferring data between a first computer and a second computer is provided. The first computer sends a request to start a session, an encrypted session ID, and an encrypted hash value to the second computer. The second computer receives the request, decrypts the encrypted hash value, independently determines a hash value and compares the independently determined value to the decrypted value. If they match, the second computer starts a session with the first computer. Subsequently, the first computer sends a request to download or upload data, an encrypted ID, an identity of the file, and an encrypted hash value to the second computer in a second connection in the session. The second computer receives the request, decrypts the encrypted hash value, independently determines a hash value and compares the independently determined value to the decrypted value. If they match, the second computer processes the request.

REFERENCES:
patent: 5694569 (1997-12-01), Fischer
patent: 6058399 (2000-05-01), Morag et al.
patent: 6393438 (2002-05-01), Kathrow et al.
patent: 6449613 (2002-09-01), Egolf et al.
patent: 2002/0104022 (2002-08-01), Jorgenson
patent: 2003/0028768 (2003-02-01), Leon et al.

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