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Move encrypt detached helper to avoid building on mobile (#79)

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wussler 2020-09-14 09:19:33 +02:00 • committed by GitHub
parent 55c4bd994d
commit 16024c21ec
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
2 changed files with 22 additions and 22 deletions
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57
helper/sign_attachment.go
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@ -1,57 +0,0 @@
// +build !ios
// +build !android
package helper
import "github.com/ProtonMail/gopenpgp/v2/crypto"
// EncryptSignAttachment encrypts an attachment using a detached signature, given a publicKey, a privateKey
// and its passphrase, the filename, and the unencrypted file data.
// Returns keypacket, dataPacket and unarmored (!) signature separate.
func EncryptSignAttachment(
publicKey, privateKey string, passphrase []byte, fileName string, plainData []byte,
) (keyPacket, dataPacket, signature []byte, err error) {
var publicKeyObj, privateKeyObj, unlockedKeyObj *crypto.Key
var publicKeyRing, privateKeyRing *crypto.KeyRing
var packets *crypto.PGPSplitMessage
var signatureObj *crypto.PGPSignature
var binMessage = crypto.NewPlainMessage(plainData)
if publicKeyObj, err = crypto.NewKeyFromArmored(publicKey); err != nil {
return nil, nil, nil, err
}
if publicKeyObj.IsPrivate() {
publicKeyObj, err = publicKeyObj.ToPublic()
if err != nil {
return nil, nil, nil, err
}
}
if publicKeyRing, err = crypto.NewKeyRing(publicKeyObj); err != nil {
return nil, nil, nil, err
}
if privateKeyObj, err = crypto.NewKeyFromArmored(privateKey); err != nil {
return nil, nil, nil, err
}
if unlockedKeyObj, err = privateKeyObj.Unlock(passphrase); err != nil {
return nil, nil, nil, err
}
defer unlockedKeyObj.ClearPrivateParams()
if privateKeyRing, err = crypto.NewKeyRing(unlockedKeyObj); err != nil {
return nil, nil, nil, err
}
if packets, err = publicKeyRing.EncryptAttachment(binMessage, fileName); err != nil {
return nil, nil, nil, err
}
if signatureObj, err = privateKeyRing.SignDetached(binMessage); err != nil {
return nil, nil, nil, err
}
return packets.GetBinaryKeyPacket(), packets.GetBinaryDataPacket(), signatureObj.GetBinary(), nil
}