浅析PKI加密解密 OpenSSL_php技巧
window与linux要区分的
解压文件
双击：
Win32OpenSSL-0_9_8l_95895.exe
安装完毕后
\OpenSSL\bin\openssl.exe
输入命令，生成私钥
genrsa -out private-rsa.pem
输入命令，生成公钥
rsa -in private-rsa.pem -pubout -out public-rsa.cer
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