forked from ProtonMail/go-proton-api
/
crypto.go
42 lines (33 loc) · 847 Bytes
/
crypto.go
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package backend
import (
"github.com/ProtonMail/go-srp"
"github.com/ProtonMail/gopenpgp/v2/crypto"
"github.com/ProtonMail/gopenpgp/v2/helper"
)
var GenerateKey = helper.GenerateKey
func hashPassword(password, salt []byte) ([]byte, error) {
passphrase, err := srp.MailboxPassword(password, salt)
if err != nil {
return nil, err
}
return passphrase[len(passphrase)-31:], nil
}
func encryptWithSignature(kr *crypto.KeyRing, b []byte) (string, string, error) {
enc, err := kr.Encrypt(crypto.NewPlainMessage(b), nil)
if err != nil {
return "", "", err
}
encArm, err := enc.GetArmored()
if err != nil {
return "", "", err
}
sig, err := kr.SignDetached(crypto.NewPlainMessage(b))
if err != nil {
return "", "", err
}
sigArm, err := sig.GetArmored()
if err != nil {
return "", "", err
}
return encArm, sigArm, nil
}