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      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 may be the same slice but otherwise should not overlap.
     13 func (c *Cipher) XORKeyStream(dst, src []byte) {
     14 	if len(src) == 0 {
     15 		return
     16 	}
     17 	xorKeyStream(&dst[0], &src[0], len(src), &c.s, &c.i, &c.j)
     18 }
     19