forked from cerc-io/plugeth
p2p/enode: remove unused code (#21612)
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@ -23,7 +23,6 @@ import (
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"errors"
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"fmt"
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"math/bits"
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"math/rand"
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"net"
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"strings"
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@ -278,23 +277,3 @@ func LogDist(a, b ID) int {
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}
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return len(a)*8 - lz
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}
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// RandomID returns a random ID b such that logdist(a, b) == n.
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func RandomID(a ID, n int) (b ID) {
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if n == 0 {
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return a
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}
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// flip bit at position n, fill the rest with random bits
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b = a
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pos := len(a) - n/8 - 1
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bit := byte(0x01) << (byte(n%8) - 1)
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if bit == 0 {
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pos++
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bit = 0x80
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}
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b[pos] = a[pos]&^bit | ^a[pos]&bit // TODO: randomize end bits
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for i := pos + 1; i < len(a); i++ {
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b[i] = byte(rand.Intn(255))
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}
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return b
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}
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