I've implemented and tested Secp256k CDSA in Java. But it seems very slow.

Implemented functions

I've implemented Secp256k CDSA with Secp256k1Point class. Parameter of Secp256k is below.

• p : FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F
• a : 0
• b : 7
• Gx : 79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798
• Gy : 483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8

In this class, I've implemented add, multiply functions.

Problem of This Source Code

The problem is that this program is too slow. I felt wired and tried GNU MP library, then it is very fast.
Therefore, I'll make JNI functions for crypto calculation.

Github Status

Testing Crypto code is located below.

https://github.com/alinous-core/codablecash/tree/master/src/test/java/crypt/test