Method for generating and distributing strong DES keys
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United States of America Patent
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Feb 2, 2010
Grant Date -
N/A
app pub date -
Jul 22, 2005
filing date -
Jul 22, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of generating a strong DES cryptographic key that doesn't require checking for parity or weak keys in the resulting key. First, all possible hexadecimal values are generated. Next, all possible two-hexadecimal value combinations are generated, where one of the two-hexadecimal values in a combination has odd parity, and the other even parity. Then, eliminate hexadecimal values E0, 01, F1, FE, 1F, 0E, 1E, and 0F from the list of all possible two-hexadecimal value combinations. Next, arrange each remaining two-hexadecimal value combination once in a user-definable order on a user-definable medium, such that the hexadecimal values alternate even and odd parity . Then, select eight unique two-hexadecimal value combinations on the user-definable medium in a user-definable manner. Lastly, use the selected eight two-hexadecimal value combinations as the DES cryptographic key.
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