Variant key matrix cipher system
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United States of America Patent
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-
Mar 25, 1980
Grant Date -
N/A
app pub date -
Oct 15, 1973
filing date -
Oct 15, 1973
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This is a cipher system for enciphering a stream of binary data by means of a product cipher. A clear message represented in a binary data format is transformed into a cipher message by operating on each bit of clear information with a complex modulo-two addition function. This function is dependent on previous internal cipher digits transmitted and varies for each message bit processed. The function is developed by continually shifting a key matrix under the control of a varying control matrix. The control matrix is formed from the sub-product of the complex function developed in generating each cipher bit.
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