1 // Copyright 2013 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // +build amd64 amd64p32 arm,!nacl 386 6 7 package rc4 8 9 func xorKeyStream(dst, src *byte, n int, state *[256]uint32, i, j *uint8) 10 11 // XORKeyStream sets dst to the result of XORing src with the key stream. 12 // Dst and src must overlap entirely or not at all. 13 func (c *Cipher) XORKeyStream(dst, src []byte) { 14 if len(src) == 0 { 15 return 16 } 17 // Assert len(dst) >= len(src) 18 _ = dst[len(src)-1] 19 xorKeyStream(&dst[0], &src[0], len(src), &c.s, &c.i, &c.j) 20 } 21
