예제 #1
0
파일: write.go 프로젝트: pr8kerl/crypto
func detachSign(w io.Writer, signer *Entity, message io.Reader, sigType packet.SignatureType, config *packet.Config) (err error) {
	if signer.PrivateKey == nil {
		return errors.InvalidArgumentError("signing key doesn't have a private key")
	}
	if signer.PrivateKey.Encrypted {
		return errors.InvalidArgumentError("signing key is encrypted")
	}

	sig := new(packet.Signature)
	sig.SigType = sigType
	sig.PubKeyAlgo = signer.PrivateKey.PubKeyAlgo
	sig.Hash = config.Hash()
	sig.CreationTime = config.Now()
	sig.IssuerKeyId = &signer.PrivateKey.KeyId

	h, wrappedHash, err := hashForSignature(sig.Hash, sig.SigType)
	if err != nil {
		return
	}
	io.Copy(wrappedHash, message)

	err = sig.Sign(h, signer.PrivateKey, config)
	if err != nil {
		return
	}

	return sig.Serialize(w)
}
예제 #2
0
파일: clearsign.go 프로젝트: pr8kerl/crypto
func (d *dashEscaper) Close() (err error) {
	if !d.atBeginningOfLine {
		if err = d.buffered.WriteByte(lf); err != nil {
			return
		}
	}
	sig := new(packet.Signature)
	sig.SigType = packet.SigTypeText
	sig.PubKeyAlgo = d.privateKey.PubKeyAlgo
	sig.Hash = d.hashType
	sig.CreationTime = d.config.Now()
	sig.IssuerKeyId = &d.privateKey.KeyId

	if err = sig.Sign(d.h, d.privateKey, d.config); err != nil {
		return
	}

	out, err := armor.Encode(d.buffered, "PGP SIGNATURE", nil)
	if err != nil {
		return
	}

	if err = sig.Serialize(out); err != nil {
		return
	}
	if err = out.Close(); err != nil {
		return
	}
	if err = d.buffered.Flush(); err != nil {
		return
	}
	return
}