/
easypgp.go
125 lines (103 loc) · 2.58 KB
/
easypgp.go
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package easypgp
type KeyPair struct {
Pubkey string
Privkey string
}
func NewKeyPairWithKeys(pubkey string, privkey string) *KeyPair {
return &KeyPair{
Pubkey: pubkey,
Privkey: privkey,
}
}
func NewEmptyEncryptedMessage() *EncryptedMessage {
return &EncryptedMessage{Content: &CipherWithSignature{}}
}
func Encrypt(message string, recipient *KeyPair) (*EncryptedMessage, error) {
recipient_entity, err := createEntityFromKeyPair(recipient, false)
if err != nil {
return nil, err
}
cipher, err := encryptRaw(message, recipient_entity)
if err != nil {
return nil, err
}
return &EncryptedMessage{
Content: &CipherWithSignature{
Cipher: cipher,
},
}, nil
}
func EncryptAndSign(message string, recipient *KeyPair, sender *KeyPair) (*EncryptedMessage, error) {
recipient_entity, err := createEntityFromKeyPair(recipient, false)
if err != nil {
return nil, err
}
sender_entity, err := createEntityFromKeyPair(sender, true)
if err != nil {
return nil, err
}
cipher, err := encryptRaw(message, recipient_entity)
if err != nil {
return nil, err
}
signature, err := createSignature(cipher, sender_entity)
if err != nil {
return nil, err
}
return &EncryptedMessage{
Content: &CipherWithSignature{
Cipher: cipher,
Signature: signature,
},
SenderPubkey: sender.Pubkey,
}, nil
}
func Decrypt(cipher string, recipient *KeyPair) (string, error) {
recipient_entity, err := createEntityFromKeyPair(recipient, true)
if err != nil {
return "", err
}
text, err := decryptRaw(cipher, recipient_entity)
if err != nil {
return "", err
}
return text, nil
}
func DecryptAndVerify(message *EncryptedMessage, recipient *KeyPair) (*DecryptedMessage, error) {
recipient_entity, err := createEntityFromKeyPair(recipient, true)
if err != nil {
return nil, err
}
text, err := decryptRaw(message.Content.Cipher, recipient_entity)
if err != nil {
return nil, err
}
signature_ok, err := message.VerifySignature()
if err != nil {
return nil, err
}
return &DecryptedMessage{
Text: text,
SignatureOk: signature_ok,
}, nil
}
func Sign(message string, signer *KeyPair) (string, error) {
signer_entity, err := createEntityFromKeyPair(signer, true)
if err != nil {
return "", err
}
signature, err := createSignature(message, signer_entity)
if err != nil {
return "", err
}
return signature, nil
}
func Verify(message string, signature string, signer_pubkey string) (bool, error) {
msg := EncryptedMessage{
Content: &CipherWithSignature{
Cipher: message,
Signature: signature,
},
}
return msg.VerifySignatureAgainst(signer_pubkey)
}