mirror of
https://github.com/ProtonMail/proton-bridge.git
synced 2025-12-18 08:06:59 +00:00
49 lines
1.5 KiB
Go
49 lines
1.5 KiB
Go
// Copyright (c) 2021 Proton Technologies AG
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//
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// This file is part of ProtonMail Bridge.
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//
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// ProtonMail Bridge is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// ProtonMail Bridge is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with ProtonMail Bridge. If not, see <https://www.gnu.org/licenses/>.
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package pmapi
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import (
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"encoding/base64"
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"github.com/jameskeane/bcrypt"
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"github.com/pkg/errors"
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)
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func HashMailboxPassword(password, salt string) ([]byte, error) {
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if salt == "" {
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return []byte(password), nil
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}
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decodedSalt, err := base64.StdEncoding.DecodeString(salt)
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if err != nil {
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return nil, errors.Wrap(err, "failed to decode salt")
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}
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encodedSalt := base64.NewEncoding("./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789").WithPadding(base64.NoPadding).EncodeToString(decodedSalt)
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hashResult, err := bcrypt.Hash(password, "$2y$10$"+encodedSalt)
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if err != nil {
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return nil, errors.Wrap(err, "failed to bcrypt-hash password")
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}
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if len(hashResult) != 60 {
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return nil, errors.New("pmapi: invalid mailbox password hash")
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}
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return []byte(hashResult[len(hashResult)-31:]), nil
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}
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