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Strict Avalanche Criterion
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Strict Avalanche Criterion

The Strict Avalanche Criterion (SAC) is a property of boolean functions of relevance in cryptography. The SAC builds on the concepts of completeness and avalanche, and was introduced by Webster and Tavares in 1985.

Table of contents
1 Definition
2 See also
3 References


A function is said to satisfy the strict avalanche criterion if, whenever a single input bit is complemented, each of the output bits should change with a probability of one half.

See also


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