apc-p15-tool/bitwise.go

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package main
// bitwiseComplimentOf returns the bitwise compliment of data
func bitwiseComplimentOf(data []byte) []byte {
compliment := []byte{}
for i := range data {
compliment = append(compliment, ^data[i])
}
return compliment
}
// isBitwiseCompliment returns true if data1 and data2 are bitwise compliments,
// otherwise it returns false
func isBitwiseCompliment(data1, data2 []byte) bool {
// if not same length, definitely not compliments
if len(data1) != len(data2) {
return false
}
// check each byte
for i := range data1 {
// if any byte is NOT the bitwise compliment of the matching byte in other data
// set, then the full set is not bitwise compliment and false
if data1[i] != ^data2[i] {
return false
}
}
return true
}