added iOS source code

[wl-app.git] / iOS / Pods / OAuthSwift / Sources / HMAC.swift

diff --git a/iOS/Pods/OAuthSwift/Sources/HMAC.swift b/iOS/Pods/OAuthSwift/Sources/HMAC.swift
new file mode 100644 (file)
index 0000000..27b13c5
--- /dev/null
+++ b/iOS/Pods/OAuthSwift/Sources/HMAC.swift
@@ -0,0 +1,55 @@
+//
+//  HMAC.swift
+//  OAuthSwift
+//
+//  Created by Dongri Jin on 1/28/15.
+//  Copyright (c) 2015 Dongri Jin. All rights reserved.
+//
+
+import Foundation
+
+open class HMAC {
+
+    let key: [UInt8] = []
+
+    class internal func sha1(key: Data, message: Data) -> Data? {
+        let blockSize = 64
+        var key = key.bytes
+        let message = message.bytes
+
+        if key.count > blockSize {
+            key = SHA1(key).calculate()
+        } else if key.count < blockSize { // padding
+            key += [UInt8](repeating: 0, count: blockSize - key.count)
+        }
+
+        var ipad = [UInt8](repeating: 0x36, count: blockSize)
+        for idx in key.indices {
+            ipad[idx] = key[idx] ^ ipad[idx]
+        }
+
+        var opad = [UInt8](repeating: 0x5c, count: blockSize)
+        for idx in key.indices {
+            opad[idx] = key[idx] ^ opad[idx]
+        }
+
+        let ipadAndMessageHash = SHA1(ipad + message).calculate()
+        let mac = SHA1(opad + ipadAndMessageHash).calculate()
+
+        return Data(bytes: UnsafePointer<UInt8>(mac), count: mac.count)
+
+    }
+
+}
+
+extension HMAC: OAuthSwiftSignatureDelegate {
+    open static func sign(hashMethod: OAuthSwiftHashMethod, key: Data, message: Data) -> Data? {
+        switch hashMethod {
+        case .sha1:
+            return sha1(key: key, message: message)
+        case .none:
+            assertionFailure("Must no sign with none")
+            return nil
+        }
+    }
+}