SECURITY SYSTEM AND METHOD
First Claim
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1. A device for generating a seedless pseudo-random number, comprising:
- a first register containing a secret code;
a second register containing a first random number generated locally and a second random number generated at a remote device; and
an exclusive OR (XOR) circuit receiving output from the first and second registers and applying an XOR function to the outputs, a result of the XOR function being fed into the second register in a subsequent cycle.
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Abstract
A device for generating a seedless pseudo-random number, according to one embodiment, includes a first register containing a secret code; a second register containing a first random number generated locally and a second random number generated at a remote device; and an exclusive OR (XOR) circuit receiving output from the first and second registers and applying an XOR function to the outputs, a result of the XOR function being fed into the second register in a subsequent cycle.
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Citations
22 Claims
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1. A device for generating a seedless pseudo-random number, comprising:
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a first register containing a secret code; a second register containing a first random number generated locally and a second random number generated at a remote device; and an exclusive OR (XOR) circuit receiving output from the first and second registers and applying an XOR function to the outputs, a result of the XOR function being fed into the second register in a subsequent cycle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for generating a seedless pseudo-random number, comprising:
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storing a secret code in a first register; storing a locally-generated random number in a second register; storing a second random number generated at a remote device in the second register; receiving output from the first and second registers; applying an exclusive OR (XOR) function to the output from the first and second registers; feeding a result of the XOR function into the second register in a subsequent cycle. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification