Introduction - If you have any usage issues, please Google them yourself
Elliptic curve cryptosystem (ECC) is a public key algorithm which can transmit information on unsafe channels without the need to pre contract passwords.
RSA is also a public key algorithm, but ECC has an obvious advantage over RSA: under the same security level, the required password length is the shortest.
But the drawback is that the algorithm is complex and big, and I read a bunch of books before I wrote the code.
I sent a 256 bit ECC source before, but it was too slow, this time it was 192 bits, and the code was carefully optimized, and the speed was faster.