Cryptography – Communication system using cryptography – Symmetric key cryptography
Reexamination Certificate
2007-04-24
2007-04-24
Barrón, Jr., Gilberto (Department: 2132)
Cryptography
Communication system using cryptography
Symmetric key cryptography
C380S028000, C380S046000, C713S167000, C713S193000, C713S500000
Reexamination Certificate
active
10251243
ABSTRACT:
A method for generating a seed value for use in symmetric encryption includes creating and storing a first data set and generating a hashed value based on the first data set. A replacement position in the first data set is selected, and at least a portion of the hashed value is written into the first data set at the replacement position. A seed portion of the first data set is selected as the seed value. By varying a number of iterations, a balance can be struck between performance (fewer iterations) and security (more iterations).
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Eaton Jason
Shankar Vishnu
Barrón Jr. Gilberto
Cybersource Corporation
Henkhaus John D.
Hickman Palmero Truong & Becker LLP
Nobahar A.
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