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I want to have my developer write an algorithm which generates a secret key used to authenticate my iPhone app's data files. &nbsp;But I want to change it before the program ships so I can keep the secret closely held.<br />
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When my Xcode developer gets latest source code, I want the program to work fully for him, but I do not want him to have the source code I modified to ensure my algorithm's secrecy.<br />
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In Windows, I'd write a DLL and make sure to add that DLL to source control. &nbsp;But I would keep the source on some other platform.<br />
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How do I do this with Objective-C?<br />
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Thanks.
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I want to have my developer write an algorithm which generates a secret key used to authenticate my iPhone app's data files.  But I want to change it before the program ships so I can keep the secret closely held.

When my Xcode developer gets latest source code, I want the program to work fully for him, but I do not want him to have the source code I modified to ensure my algorithm's secrecy.

In Windows, I'd write a DLL and make sure to add that DLL to source control.  But I would keep the source on some other platform.

How do I do this with Objective-C?

Thanks.

Need to hide Objective-C code from other developers

Encryption is the process of encoding messages or information in such a way that only authorized parties can read it. In an encryption scheme, the intended communication information or message, referred to as plaintext, is encrypted using an encryption algorithm, generating ciphertext that can only be read if decrypted. For technical reasons, an encryption scheme usually uses a pseudo-random encryption key generated by an algorithm. An authorized recipient can easily decrypt the message with the key provided by the originator to recipients, but not to unauthorized interceptors.

Encryption

iOS is a mobile operating system developed by Apple; it is a derivative of the Mac OS X desktop operating system, with which it shares many (but not all) common frameworks and other components. These include Cocoa Touch, the Mach/Darwin/XNU kernel and code from the Berkeley Software Distribution (BSD). Each iOS application runs in its own secure sandbox to prevent altering other applications, the operating system, or any other data.

Swift is a compiled programming language created for iOS, OS X, watchOS, tvOS and Linux development by Apple Inc. Swift is designed to work with Apple's Cocoa and Cocoa Touch frameworks and the large body of existing Objective-C code written for Apple products. Swift is intended to be more resilient to erroneous code ("safer") than Objective-C and also more concise. It is built with the LLVM compiler framework included in Xcode 6 and later and uses the Objective-C runtime, which allows C, Objective-C, C++ and Swift code to run within a single program. A second free implementation of Swift targets Microsoft's Common Language Infrastructure (a.k.a. .NET) and the Java/Android platform.

Swift Programming

Objective-C is an object-oriented programming language that is a strict superset of C (any valid C code is equally valid Objective-C code), and it inherits its object-oriented capabilities from Smalltalk. All procedural syntax is identical to that of C, and all object-oriented syntax is an implementation of Smalltalk messaging. It is the main programming language used by Apple for OS-X and iOS and their respective APIs/ Objective-C inherits the syntax, primitive types, and flow control statements of C and adds syntax for defining classes and methods.