Disclaimer: IOS7Crypt is wholly unrelated to iOS, iOS7, and other Apple intellectual property. IOS7Crypt is a computer science education tool, demonstrating techniques in practical cryptology as applied to old network routers running Internet Operating System version 7 and below.
IOS7Crypt encrypts and decrypts passwords using a manufacturers weak algorithm, of which the manufacturer has since publicly acknowledged (http://www.cisco.com/en/US/tech/tk59/technologies_tech_note09186a00809d38a7.shtml).
IOS7Crypt is available in source and machine code, in a variety of programming languages and platforms, to aid students with varying backgrounds in computer science and the software development industry.
Source Code:
https://github.com/mcandre/IOS7Crypt-iOS