Gecko [ 167.86.127.34 ]

Name	Size	Permission
benchmark_test.go	3.46 KB	-rw-r--r--
cbc.go	4.42 KB	-rw-r--r--
cbc_aes_test.go	2.93 KB	-rw-r--r--
cfb.go	1.94 KB	-rw-r--r--
cfb_test.go	2.77 KB	-rw-r--r--
cipher.go	2.49 KB	-rw-r--r--
cipher_test.go	2.2 KB	-rw-r--r--
common_test.go	1.24 KB	-rw-r--r--
ctr.go	2.12 KB	-rw-r--r--
ctr_aes_test.go	2.98 KB	-rw-r--r--
ctr_test.go	1.13 KB	-rw-r--r--
example_test.go	11.78 KB	-rw-r--r--
export_test.go	242 B	-rw-r--r--
gcm.go	13.82 KB	-rw-r--r--
gcm_test.go	21.3 KB	-rw-r--r--
io.go	1.46 KB	-rw-r--r--
ofb.go	1.6 KB	-rw-r--r--
ofb_test.go	2.95 KB	-rw-r--r--
xor_amd64.go	642 B	-rw-r--r--
xor_amd64.s	1.31 KB	-rw-r--r--
xor_generic.go	2.33 KB	-rw-r--r--
xor_ppc64x.go	641 B	-rw-r--r--
xor_ppc64x.s	2.03 KB	-rw-r--r--
xor_test.go	1.6 KB	-rw-r--r--

Code Editor : io.go

// 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) && 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
}

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Code Editor : io.go