1 files changed, 0 insertions, 69 deletions
diff --git a/src/pkg/crypto/rc4/rc4.go b/src/pkg/crypto/rc4/rc4.go
deleted file mode 100644
index 9acb681bf..000000000
--- a/src/pkg/crypto/rc4/rc4.go
+++ /dev/null
@@ -1,69 +0,0 @@
-// Copyright 2009 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.
-
-// Package rc4 implements RC4 encryption, as defined in Bruce Schneier's
-// Applied Cryptography.
-package rc4
-
-// BUG(agl): RC4 is in common use but has design weaknesses that make
-// it a poor choice for new protocols.
-
-import "strconv"
-
-// A Cipher is an instance of RC4 using a particular key.
-type Cipher struct {
-	s    [256]uint32
-	i, j uint8
-}
-
-type KeySizeError int
-
-func (k KeySizeError) Error() string {
-	return "crypto/rc4: invalid key size " + strconv.Itoa(int(k))
-}
-
-// NewCipher creates and returns a new Cipher.  The key argument should be the
-// RC4 key, at least 1 byte and at most 256 bytes.
-func NewCipher(key []byte) (*Cipher, error) {
-	k := len(key)
-	if k < 1 || k > 256 {
-		return nil, KeySizeError(k)
-	}
-	var c Cipher
-	for i := 0; i < 256; i++ {
-		c.s[i] = uint32(i)
-	}
-	var j uint8 = 0
-	for i := 0; i < 256; i++ {
-		j += uint8(c.s[i]) + key[i%k]
-		c.s[i], c.s[j] = c.s[j], c.s[i]
-	}
-	return &c, nil
-}
-
-// Reset zeros the key data so that it will no longer appear in the
-// process's memory.
-func (c *Cipher) Reset() {
-	for i := range c.s {
-		c.s[i] = 0
-	}
-	c.i, c.j = 0, 0
-}
-
-// xorKeyStreamGeneric 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.
-//
-// This is the pure Go version. rc4_{amd64,386,arm}* contain assembly
-// implementations. This is here for tests and to prevent bitrot.
-func (c *Cipher) xorKeyStreamGeneric(dst, src []byte) {
-	i, j := c.i, c.j
-	for k, v := range src {
-		i += 1
-		j += uint8(c.s[i])
-		c.s[i], c.s[j] = c.s[j], c.s[i]
-		dst[k] = v ^ uint8(c.s[uint8(c.s[i]+c.s[j])])
-	}
-	c.i, c.j = i, j
-}