//
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// CryptoSwift
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//
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// Copyright (C) 2014-2022 Marcin Krzyżanowski <marcin@krzyzanowskim.com>
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// This software is provided 'as-is', without any express or implied warranty.
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//
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// In no event will the authors be held liable for any damages arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
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//
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// - The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation is required.
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// - Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
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// - This notice may not be removed or altered from any source or binary distribution.
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//
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#if canImport(Darwin)
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import Darwin
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#elseif canImport(Glibc)
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import Glibc
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#elseif canImport(ucrt)
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import ucrt
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#endif
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/// Worker cryptor/decryptor of `Updatable` types
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public protocol Cryptors: AnyObject {
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/// Cryptor suitable for encryption
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func makeEncryptor() throws -> Cryptor & Updatable
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/// Cryptor suitable for decryption
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func makeDecryptor() throws -> Cryptor & Updatable
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/// Generate array of random bytes. Helper function.
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static func randomIV(_ blockSize: Int) -> Array<UInt8>
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}
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extension Cryptors {
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/// Generate array of random values.
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/// Convenience helper that uses `Swift.RandomNumberGenerator`.
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/// - Parameter count: Length of array
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public static func randomIV(_ count: Int) -> Array<UInt8> {
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(0..<count).map({ _ in UInt8.random(in: 0...UInt8.max) })
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}
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}
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