Short license key generation and validation framework based on elliptic curve digital signatures (ECDSA) for Mac OS X/Cocoa.

Project goal: replacement for AquaticPrime with shorter keys and similar or better security.

Documentation will be available later... For now, read EllipticLicense.h.

Example keys

112-bit curve (~ equivalent to RSA-512, 2⁵⁶ bit security) - 45 characters:

Licensed to: John Doe
License key: HQYRV-OZFNZ-M3L7B-WA644-CXLG4-D7IRD-QZ6FY-GJGTO-MEXEG

128-bit curve (~ 2⁶⁴ bit security) - 52 characters:

Licensed to: John Doe
License key: YBFB-L264-32WL-KHK4-DA4L-L7VW-HGCV-PO3U-PFF6-RJHW-MRBS-5OW4-53WA

160-bit curve (~ equivalent to RSA-1024, 2⁸⁰ bit security) - 64 characters:

Licensed to: John Doe
License key: IPAA6CH2-2STFJTCW-PYBDDBDM-YK4ZYA6N-3YE624E4-2K7KFDLE-LODJEN5W-WRADC652

Get it

This is a Fossil repository (see Fossil Quick Start).

Clone command:

fossil clone https://codingrobots.org/ellipticlicense EllipticLicense.fossil

To get the latest version of source code without using Fossil, login as anonymous, go to Timeline, select the latest check-in, and click "ZIP archive".

Git Mirror: http://github.com/dchest/ellipticlicense

EllipticLicenseDeveloper App

There's a GUI application for managing your project public and private keys, generating licenses and blocking keys called EllipticLicenseDeveloper included.

Requirements

Mac OS X 10.6 (because it includes libcrypto.0.9.8d.dylib, don't forget to link you project with it).

No Copyright

EllipticLicense has been released into the public domain. This means that you can do whatever you want with this code, and you're not requred to even mention that you use it.

Icon © FatCow. Creative Commons Attribution 3.0 License