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io.go
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/
io.go
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package crypto
import (
"crypto/cipher"
"io"
)
type CryptionReader struct {
stream cipher.Stream
reader io.Reader
}
func NewCryptionReader(stream cipher.Stream, reader io.Reader) *CryptionReader {
return &CryptionReader{
stream: stream,
reader: reader,
}
}
func (v *CryptionReader) Read(data []byte) (int, error) {
nBytes, err := v.reader.Read(data)
if nBytes > 0 {
v.stream.XORKeyStream(data[:nBytes], data[:nBytes])
}
return nBytes, err
}
type CryptionWriter struct {
stream cipher.Stream
writer io.Writer
}
// NewCryptionWriter creates a new CryptionWriter.
func NewCryptionWriter(stream cipher.Stream, writer io.Writer) *CryptionWriter {
return &CryptionWriter{
stream: stream,
writer: writer,
}
}
// Write implements io.Writer.Write().
func (v *CryptionWriter) Write(data []byte) (int, error) {
v.stream.XORKeyStream(data, data)
return v.writer.Write(data)
}