Here I would like to introduce my little ECC calculator

https://github.com/MrMaxweII/Secp256k1-Calculator/blob/master/README.mdSecp256k1-Calculator

A small calculator of operations calculated on the elliptic curve Secp256k1.

All entered in hexa decimal numbers.

All calculations are done mod (p).

Same numbers are marked in color.

following arithmetic operations are implemented:

- mod(n) addition, subtraction, multiplication and division of 256bit hexadecimal numbers.

- addition and subtraction of points on the curve.

- Multiplication with a point on the curve

- Divide a point on the curve with a number

- ECDSA Signature

- ECDSA verification