Imported Upstream version 1.1~hg20130304upstream/1.1_hg20130304

1 files changed, 18 insertions, 0 deletions

diff --git a/src/pkg/crypto/rc4/rc4_asm.go b/src/pkg/crypto/rc4/rc4_asm.go
new file mode 100644
index 000000000..0b66e4a9e
--- /dev/null
+++ b/src/pkg/crypto/rc4/rc4_asm.go
@@ -0,0 +1,18 @@
+// 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
+
+package rc4
+
+func xorKeyStream(dst, src *byte, n int, state *[256]byte, i, j *uint8)
+
+// 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) {
+	if len(src) == 0 {
+		return
+	}
+	xorKeyStream(&dst[0], &src[0], len(src), &c.s, &c.i, &c.j)
+}