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//===----------------------------------------------------------------------===//
//
// This source file is part of the SwiftCrypto open source project
//
// Copyright (c) 2019-2020 Apple Inc. and the SwiftCrypto project authors
// Licensed under Apache License v2.0
//
// See LICENSE.txt for license information
// See CONTRIBUTORS.md for the list of SwiftCrypto project authors
//
// SPDX-License-Identifier: Apache-2.0
//
//===----------------------------------------------------------------------===//
#if CRYPTO_IN_SWIFTPM && !CRYPTO_IN_SWIFTPM_FORCE_BUILD_API
@_exported import CryptoKit
#else
import Foundation
/// A Key Encapsulation Mechanism
public enum KEM {
/// The result of an encapsulation operation
public struct EncapsulationResult {
/// The shared secret
public let sharedSecret: SymmetricKey
/// The encapsulated secret
public let encapsulated: Data
public init(sharedSecret: SymmetricKey, encapsulated: Data) {
self.sharedSecret = sharedSecret
self.encapsulated = encapsulated
}
}
}
/// A Key Encapsulation Mechanism's Public Key
public protocol KEMPublicKey {
/// Encapsulates the generated shared secret
/// - Returns: The shared secret and its encapsulated version
func encapsulate() throws -> KEM.EncapsulationResult
}
/// A Key Encapsulation Mechanism's Private Key
public protocol KEMPrivateKey {
associatedtype PublicKey: KEMPublicKey
/// Generate a new random Private Key
/// - Returns: The generated private key
static func generate() throws -> Self
/// Decapsulates the encapsulated shared secret
/// - Parameter encapsulated: The encapsulated shared secret
/// - Returns: The decapsulated shared secret
func decapsulate(_ encapsulated: Data) throws -> SymmetricKey
/// Returns the associated public key
var publicKey: PublicKey { get }
}
#endif // Linux or !SwiftPM
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