tunnelkit/Sources/TunnelKitOpenVPNProtocol/OpenVPN+PRNG.swift

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//
// OpenVPN+PRNG.swift
// TunnelKit
//
// Created by Davide De Rosa on 11/8/21.
2022-02-04 11:42:58 +00:00
// Copyright (c) 2022 Davide De Rosa. All rights reserved.
//
// https://github.com/passepartoutvpn
//
// This file is part of TunnelKit.
//
// TunnelKit 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.
//
// TunnelKit 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 TunnelKit. If not, see <http://www.gnu.org/licenses/>.
//
import Foundation
2021-10-25 14:27:27 +00:00
import TunnelKitCore
import TunnelKitOpenVPNCore
import CTunnelKitCore
import CTunnelKitOpenVPNProtocol
extension OpenVPN {
/**
Initializes the PRNG. Must be issued before using `OpenVPNSession`.
- Parameter seedLength: The length in bytes of the pseudorandom seed that will feed the PRNG.
*/
public static func prepareRandomNumberGenerator(seedLength: Int) -> Bool {
let seed: ZeroingData
do {
seed = try SecureRandom.safeData(length: seedLength)
} catch {
return false
}
return CryptoBox.preparePRNG(withSeed: seed.bytes, length: seed.count)
}
}