'HCG Test Tool' is a software, available for the cryptosystem design, the signature design, and its studies without difficulties of a mathematical complex, and can easily make an original design through the determination of the modulo p, curve parameters using HCG. This software also includes a Prime Test Tool.
English Manual is included.
This software needs .NET Framework 3.5 ahead for its instillation.
If you have not yet this, please download it from here.