Merge pull request radianttap#2 from mattbeshara/master

Resolve warning when building with Swift 5

Author: radianttap

Sources/JWT/HMACCommonCrypto.swift

@@ -31,12 +31,12 @@ func hmac(algorithm: HMACAlgorithm, key: Data, message: Data) -> Data {
   let context = UnsafeMutablePointer<CCHmacContext>.allocate(capacity: 1)
   defer { context.deallocate() }
 
-  key.withUnsafeBytes() { (buffer: UnsafePointer<UInt8>) in
-    CCHmacInit(context, algorithm.commonCryptoAlgorithm, buffer, size_t(key.count))
+  key.withUnsafeBytes { (buffer: UnsafeRawBufferPointer) in
+    CCHmacInit(context, algorithm.commonCryptoAlgorithm, buffer.baseAddress, size_t(key.count))
   }
 
-  message.withUnsafeBytes { (buffer: UnsafePointer<UInt8>) in
-    CCHmacUpdate(context, buffer, size_t(message.count))
+  message.withUnsafeBytes { (buffer: UnsafeRawBufferPointer) in
+    CCHmacUpdate(context, buffer.baseAddress, size_t(message.count))
   }
 
   var hmac = Array<UInt8>(repeating: 0, count: Int(algorithm.commonCryptoDigestLength))