Man in the middle computer technique

Details Man in the middle computer technique Man in the middle computer technique

2008-06-03

2011-11-08

Augustin, Evens J (Department: 3621)

Data processing: financial, business practice, management, or co

Business processing using cryptography

Usage protection of distributed data files

C713S183000, C726S005000, C709S229000

Reexamination Certificate

active

08055587

ABSTRACT:
A method for constructing a secure Internet transaction, the method includes: receiving a user identification (userid) and user password on a client device for filling out a form generated by a secure web site; concatenating the user's Internet Protocol (IP) address with a separate password that is maintained on the secure web site that the user is authenticating to; encrypting the concatenated user IP and separate password to form an Internet Protocol password (IPPW); wherein the encrypting is carried out with a client device linear feedback shift register (LFSR) with a defined cycle count; building a transaction consisting of the IPPW, defined cycle count, and userid; transmitting the transaction and form via a network towards the secure web site; wherein in response the secure website performs the following: decrypts the IPPW, and determines if the IP portion of the decrypted IPPW is equal to the user's IP address.

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International Search Report; International Application No. PCT/EP2009/056500; International Filing Date: May 28, 2009; Date of mailing: Dec. 21, 2009; 9 pages.

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