在 CentOS 6.4 上使用椭圆曲线重建 openssl
策略是：
1) Download the "official" CentOS source package (.src.rpm)
2) Modify the .spec file to enable elliptic curves. (change no-EC to enable-EC)
3) Rebuild the package using mock.
构建是在全新的 Amazon Cloud 服务器上执行的，它允许任何人精确复制下面执行的每个步骤。
# 1. Log into AWS (Amazon Web Services) and create a public key.
# 2. Download your public key and install into your local client e.g. putty or ssh.
# 3. Instantiate a CentOS 6.4 machine using AWS marketplace for machine images. (free) …