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go-asink/asink/encryption.go

39 lines
824 B
Go

/*
Copyright (C) 2013 Aaron Lindsay <aaron@aclindsay.com>
*/
package main
import (
"code.google.com/p/go.crypto/openpgp"
"io"
)
func NewEncrypter(writer io.WriteCloser, key string) (plaintextWriter io.WriteCloser, err error) {
return openpgp.SymmetricallyEncrypt(writer, []byte(key), nil, nil)
}
type Decrypter struct {
details *openpgp.MessageDetails
}
func NewDecrypter(ciphertextReader io.ReadCloser, key string) (decrypter io.Reader, err error) {
prompt := func(keys []openpgp.Key, symmetric bool) ([]byte, error) {
return []byte(key), nil
}
details, err := openpgp.ReadMessage(ciphertextReader, nil, prompt, nil)
if err != nil {
decrypter = nil
return
}
decrypter = Decrypter{details}
return
}
func (d Decrypter) Read(p []byte) (n int, err error) {
return d.details.UnverifiedBody.Read(p)
}