implemented crypto and started pairing

Limelight/HttpManager.m

@@ -0,0 +1,68 @@
+//
+//  HttpManager.m
+//  Limelight
+//
+//  Created by Diego Waxemberg on 10/16/14.
+//  Copyright (c) 2014 Limelight Stream. All rights reserved.
+//
+
+#import "HttpManager.h"
+
+@implementation HttpManager {
+    NSString* _baseURL;
+    NSString* _host;
+    NSString* _uniqueId;
+    NSString* _deviceName;
+}
+
+static const NSString* PORT = @"47984";
+
+
+- (id) initWithHost:(NSString*) host uniqueId:(NSString*) uniqueId deviceName:(NSString*) deviceName {
+    self = [super init];
+    _host = host;
+    _uniqueId = uniqueId;
+    _deviceName = deviceName;
+    _baseURL = [[NSString stringWithFormat:@"https://%@:%@", host, PORT]
+                stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
+    return self;
+}
+
+- (NSURL*) newPairRequestWithSalt:(NSString*)salt andCert:(NSString*)cert {
+    NSURL* url = [[NSURL alloc] initWithString:
+                  [NSString stringWithFormat:@"http://%@:%@/pair?uniqueid=%@&devicename=%@&updateState=1&phrase=getservercert&salt=%@&clientcert=%@",
+                                                _host, PORT, _uniqueId, _deviceName, salt, cert]];
+    return url;
+}
+
+- (void) initiatePairing {
+    
+}
+
+- (NSString*) generatePIN {
+    NSString* PIN = [NSString stringWithFormat:@"%d%d%d%d",
+                     arc4random() % 10, arc4random() % 10,
+                     arc4random() % 10, arc4random() % 10];
+    NSLog(@"PIN: %@", PIN);
+    return PIN;
+}
+
+- (NSData*) saltPIN:(NSString*)PIN {
+    NSMutableData* saltedPIN = [[NSMutableData alloc] initWithCapacity:20];
+    [saltedPIN appendData:[self randomBytes:16]];
+    [saltedPIN appendBytes:[PIN UTF8String] length:4];
+    
+    NSLog(@"Salted PIN: %@", [saltedPIN description]);
+
+    return saltedPIN;
+}
+
+- (NSData*) randomBytes:(NSInteger)length {
+    char* bytes = malloc(length);
+    arc4random_buf(bytes, length);
+    NSData* randomData = [NSData dataWithBytes:bytes length:length];
+    free(bytes);
+    return randomData;
+}
+
+@end