implemented crypto and started pairing

Limelight/CryptoManager.m

@@ -8,7 +8,7 @@
 
 #import "CryptoManager.h"
 #import "mkcert.h"
-
+#import <AdSupport/ASIdentifierManager.h>
 
 @implementation CryptoManager
 
@@ -31,4 +31,18 @@
     freeCertKeyPair(certKeyPair);
 }
 
+- (NSString*) getUniqueID {
+    // generate a UUID
+    NSUUID* uuid = [ASIdentifierManager sharedManager].advertisingIdentifier;
+    NSString* idString = [NSString stringWithString:[uuid UUIDString]];
+    
+    // we need a 16byte hex-string so we take the last 17 characters
+    // and remove the '-' to get a 16 character string
+    NSMutableString* uniqueId = [NSMutableString stringWithString:[idString substringFromIndex:19]];
+    [uniqueId deleteCharactersInRange:NSMakeRange(4, 1)];
+
+    //NSLog(@"Unique ID: %@", uniqueId);
+    return [NSString stringWithString:uniqueId];
+}
+
 @end