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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !amd64,!arm,!386
package rc4
// XORKeyStream sets dst to the result of XORing src with the key stream.
// Dst and src may be the same slice but otherwise should not overlap.
func (c *Cipher) XORKeyStream(dst, src []byte) {
i, j := c.i, c.j
for k, v := range src {
i += 1
j += c.s[i]
c.s[i], c.s[j] = c.s[j], c.s[i]
dst[k] = v ^ c.s[c.s[i]+c.s[j]]
}
c.i, c.j = i, j
}
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