Apparatus for and method of detecting initialization vector errors and maintaining cryptographic synchronization without substantial increase in overhead
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United States of America Patent
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Apr 10, 2001
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N/A
app pub date -
Dec 31, 1997
filing date -
Dec 31, 1997
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Abstract
An apparatus and method for detecting erroneous initialization vectors transmitted over a communications channel and maintaining cryptographic synchronization by comparing a received vector with a predicted correct vector. The vectors are random-like in nature by utilizing a pseudo-random number generator having a long overall cycle length. If the level of bit errors of the comparison is relatively small, considering the predicted vector is considered correct and used for synchronization, but if the number of bit errors of the comparison is relatively large, the predicated vector is considered in correct.
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