You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
43 lines
1.1 KiB
43 lines
1.1 KiB
// Copyright (c) 2022 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 message |
|
|
|
import ( |
|
"crypto/sha256" |
|
"encoding/hex" |
|
) |
|
|
|
type boundary struct { |
|
val string |
|
} |
|
|
|
func newBoundary(seed string) *boundary { |
|
return &boundary{val: seed} |
|
} |
|
|
|
func (bw *boundary) gen() string { |
|
hash := sha256.New() |
|
|
|
if _, err := hash.Write([]byte(bw.val)); err != nil { |
|
panic(err) |
|
} |
|
|
|
bw.val = hex.EncodeToString(hash.Sum(nil)) |
|
|
|
return bw.val |
|
}
|
|
|