keychain/TrustedPeersHelper/OctagonPeerKeys.swift

   1 import Foundation
   2
   3 enum OctagonSelfPeerKeysError: Error {
   4     case noPublicKeys
   5 }
   6
   7 class OctagonSelfPeerKeys: NSObject, CKKSSelfPeer {
   8     var encryptionKey: _SFECKeyPair
   9     var signingKey: _SFECKeyPair
  10     var peerID: String
  11
  12     // Here for conformance with CKKSPeer
  13     var publicEncryptionKey: _SFECPublicKey?
  14     var publicSigningKey: _SFECPublicKey?
  15
  16     var encryptionVerificationKey: _SFECPublicKey
  17     var signingVerificationKey: _SFECPublicKey
  18
  19     func matchesPeer(_ peer: CKKSPeer) -> Bool {
  20         return false
  21     }
  22
  23     init(peerID: String, signingKey: _SFECKeyPair, encryptionKey: _SFECKeyPair) throws {
  24         self.peerID = peerID
  25         self.signingKey = signingKey
  26         self.encryptionKey = encryptionKey
  27
  28         self.publicEncryptionKey = encryptionKey.publicKey as? _SFECPublicKey
  29         self.publicSigningKey = signingKey.publicKey as? _SFECPublicKey
  30
  31         guard let encryptionVerificationKey = self.publicEncryptionKey,
  32             let signingVerificationKey = self.publicSigningKey else {
  33                 throw OctagonSelfPeerKeysError.noPublicKeys
  34         }
  35
  36         self.encryptionVerificationKey = encryptionVerificationKey
  37         self.signingVerificationKey = signingVerificationKey
  38     }
  39
  40     override var description: String {
  41         return "<OctagonSelfPeerKeys: \(self.peerID)>"
  42     }
  43 }
  44
  45 extension TPPeerPermanentInfo: CKKSPeer {
  46     public var publicEncryptionKey: _SFECPublicKey? {
  47         return self.encryptionPubKey as? _SFECPublicKey
  48     }
  49
  50     public var publicSigningKey: _SFECPublicKey? {
  51         return self.signingPubKey as? _SFECPublicKey
  52     }
  53
  54     public func matchesPeer(_ peer: CKKSPeer) -> Bool {
  55         return self.peerID == peer.peerID
  56     }
  57 }