66 lines
1.9 KiB
Swift
66 lines
1.9 KiB
Swift
//
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// PrivateKey.swift
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// SwiftyRSA
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//
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// Created by Lois Di Qual on 5/17/17.
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// Copyright © 2017 Scoop. All rights reserved.
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//
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import Foundation
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public class PrivateKey: Key {
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/// Reference to the key within the keychain
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public let reference: SecKey
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/// Original data of the private key.
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/// Note that it does not contain PEM headers and holds data as bytes, not as a base 64 string.
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public let originalData: Data?
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let tag: String?
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/// Returns a PEM representation of the private key.
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///
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/// - Returns: Data of the key, PEM-encoded
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/// - Throws: SwiftyRSAError
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public func pemString() throws -> String {
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let data = try self.data()
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let pem = SwiftyRSA.format(keyData: data, withPemType: "RSA PRIVATE KEY")
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return pem
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}
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/// Creates a private key with a keychain key reference.
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/// This initializer will throw if the provided key reference is not a private RSA key.
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///
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/// - Parameter reference: Reference to the key within the keychain.
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/// - Throws: SwiftyRSAError
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public required init(reference: SecKey) throws {
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guard SwiftyRSA.isValidKeyReference(reference, forClass: kSecAttrKeyClassPrivate) else {
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throw SwiftyRSAError.notAPrivateKey
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}
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self.reference = reference
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self.tag = nil
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self.originalData = nil
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}
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/// Creates a private key with a RSA public key data.
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///
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/// - Parameter data: Private key data
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/// - Throws: SwiftyRSAError
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required public init(data: Data) throws {
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self.originalData = data
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let tag = UUID().uuidString
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self.tag = tag
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let dataWithoutHeader = try SwiftyRSA.stripKeyHeader(keyData: data)
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reference = try SwiftyRSA.addKey(dataWithoutHeader, isPublic: false, tag: tag)
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}
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deinit {
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if let tag = tag {
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SwiftyRSA.removeKey(tag: tag)
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}
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}
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}
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