OpenSSL cryptographic algorithms library notes - Chapter 6.3 digital signature and sign test

First, parameters for the elliptic curve digital signature is selected disclosed, since the security of the system does not depend on the security parameter. Curve parameter information disclosed as follows:

1. A prime field Fp size p.
2. A Weierstrass equation parameters, b, where a, b∈Fp.
3. The base point on the elliptic curve G = (Gx, Gy)! = O, wherein Gx, Gy∈Fp.
4. Order of the base point G n, n is a prime number
5. Order curve #E (Fp).
6. Concomitant factor #E (Fp) / n.

This section are as follows:

6.3.1 Principle signature

6.3.2 signature code

6.3.3 signature function call relationship

6.3.4 Signature Function Description

6.3.5 verification principle

6.4.6 verify the relationship between function calls

6.4.7 verification Function Description