OpenSSL>
//私钥加密
rsautl -sign -in o.txt -inkey private.pem -out e.txt
//公钥解密
rsautl -verify -in e.txt -pubin public.pem -out d.txt
//base64加密
base64 -in e.txt -out e_base64.txt
//base64解密
base64 -d in e_base64.txt -out e_d_base64.txt
OpenSSL>
base64 -d in e_base64.txt -out e_d_base64.txt