Dactyloidae iOS initial commit

mobile/ios/Storage/CertStore.swift

@@ -0,0 +1,31 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import Foundation
+import Shared
+import UIKit
+import Deferred
+
+/// In-memory certificate store.
+open class CertStore {
+    fileprivate var keys = Set<String>()
+
+    public init() {}
+
+    open func addCertificate(_ cert: SecCertificate, forOrigin origin: String) {
+        let data: Data = SecCertificateCopyData(cert) as Data
+        let key = keyForData(data, origin: origin)
+        keys.insert(key)
+    }
+
+    open func containsCertificate(_ cert: SecCertificate, forOrigin origin: String) -> Bool {
+        let data: Data = SecCertificateCopyData(cert) as Data
+        let key = keyForData(data, origin: origin)
+        return keys.contains(key)
+    }
+
+    fileprivate func keyForData(_ data: Data, origin: String) -> String {
+        return "\(origin)/\(data.sha256.hexEncodedString)"
+    }
+}