subtle

Documentation

Index

• func ConstantTimeAllZero(bytes []byte) int
• func XORBytes(dst, x, y []byte) int

Functions

func ConstantTimeAllZero

func ConstantTimeAllZero(bytes []byte) int

func XORBytes

func XORBytes(dst, x, y []byte) int

XORBytes sets dst[i] = x[i] ^ y[i] for all i < n = min(len(x), len(y)), returning n, the number of bytes written to dst. If dst does not have length at least n, XORBytes panics without writing anything to dst.

dst and x or y may overlap exactly or not at all, otherwise XORBytes may panic.