Imported Upstream version 1.4upstream/1.4

1 files changed, 0 insertions, 55 deletions

diff --git a/src/pkg/crypto/cipher/io.go b/src/pkg/crypto/cipher/io.go
deleted file mode 100644
index 3938c0a4c..000000000
--- a/src/pkg/crypto/cipher/io.go
+++ /dev/null
@@ -1,55 +0,0 @@
-// Copyright 2010 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 cipher
-
-import "io"
-
-// The Stream* objects are so simple that all their members are public. Users
-// can create them themselves.
-
-// StreamReader wraps a Stream into an io.Reader. It calls XORKeyStream
-// to process each slice of data which passes through.
-type StreamReader struct {
-	S Stream
-	R io.Reader
-}
-
-func (r StreamReader) Read(dst []byte) (n int, err error) {
-	n, err = r.R.Read(dst)
-	r.S.XORKeyStream(dst[:n], dst[:n])
-	return
-}
-
-// StreamWriter wraps a Stream into an io.Writer. It calls XORKeyStream
-// to process each slice of data which passes through. If any Write call
-// returns short then the StreamWriter is out of sync and must be discarded.
-// A StreamWriter has no internal buffering; Close does not need
-// to be called to flush write data.
-type StreamWriter struct {
-	S   Stream
-	W   io.Writer
-	Err error // unused
-}
-
-func (w StreamWriter) Write(src []byte) (n int, err error) {
-	c := make([]byte, len(src))
-	w.S.XORKeyStream(c, src)
-	n, err = w.W.Write(c)
-	if n != len(src) {
-		if err == nil { // should never happen
-			err = io.ErrShortWrite
-		}
-	}
-	return
-}
-
-// Close closes the underlying Writer and returns its Close return value, if the Writer
-// is also an io.Closer. Otherwise it returns nil.
-func (w StreamWriter) Close() error {
-	if c, ok := w.W.(io.Closer); ok {
-		return c.Close()
-	}
-	return nil
-}