Select your personal key to enable the use of OpenPGP, or your personal certificate to enable the use of S/MIME. For a personal key or certificate you own the corresponding secret key.
请选择您要用于 OpenPGP 的个人密钥，或用于 S/MIME 的个人证书。无论是个人密钥或是证书，您都会有对应的私钥。