forked from Silverfish/proton-bridge
45 lines
1.3 KiB
Go
45 lines
1.3 KiB
Go
// Copyright (c) 2021 Proton Technologies AG
|
|
//
|
|
// This file is part of ProtonMail Bridge.
|
|
//
|
|
// ProtonMail Bridge is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// ProtonMail Bridge is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with ProtonMail Bridge. If not, see <https://www.gnu.org/licenses/>.
|
|
|
|
package pmapi
|
|
|
|
import (
|
|
"encoding/base64"
|
|
|
|
"github.com/ProtonMail/go-srp"
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
// HashMailboxPassword expectects 128bit long salt encoded by standard base64.
|
|
func HashMailboxPassword(password []byte, salt string) ([]byte, error) {
|
|
if salt == "" {
|
|
return password, nil
|
|
}
|
|
|
|
decodedSalt, err := base64.StdEncoding.DecodeString(salt)
|
|
if err != nil {
|
|
return nil, errors.Wrap(err, "failed to decode salt")
|
|
}
|
|
|
|
hash, err := srp.MailboxPassword(password, decodedSalt)
|
|
if err != nil {
|
|
return nil, errors.Wrap(err, "failed to hash password")
|
|
}
|
|
|
|
return hash[len(hash)-31:], nil
|
|
}
|