Java生成私钥证书 Java怎样基于command调用openssl生成私钥证书
护花使者 人气:0想了解Java怎样基于command调用openssl生成私钥证书的相关内容吗,护花使者在本文为您仔细讲解Java生成私钥证书的相关知识和一些Code实例,欢迎阅读和指正,我们先划重点:Java,command,openssl,生成,私钥证书,下面大家一起来学习吧。
在windows环境下进行的测试,前提条件,windows上需要先安装openssl。
配置环境变量,查看版本:
import java.io.*; import java.util.Properties; public class OpensslCommand { private static void runCMD(String[] CMD) { java.lang.Process process = null; try { process = Runtime.getRuntime().exec(CMD); ByteArrayOutputStream resultOutStream = new ByteArrayOutputStream(); InputStream errorInStream = new BufferedInputStream(process.getErrorStream()); InputStream processInStream = new BufferedInputStream(process.getInputStream()); int num = 0; byte[] bs = new byte[1024]; while ((num = errorInStream.read(bs)) != -1) { resultOutStream.write(bs, 0, num); } while ((num = processInStream.read(bs)) != -1) { resultOutStream.write(bs, 0, num); } String result = new String(resultOutStream.toByteArray(), "gbk"); System.out.println(result); errorInStream.close(); processInStream.close(); resultOutStream.close(); } catch (IOException e) { e.printStackTrace(); } finally { if (process != null) process.destroy(); } } public static void main(String[] args) throws Exception { //需要指定openssl.exe路径 //java生成私钥 String[] cmdPrivateKey = {"cmd", "/C", "C:\\soft\\OpenSSL-Win64\\bin\\openssl.exe genrsa -out ca.key 2048"}; //java生成证书请求 String[] cmdCertificationReq = {"cmd", "/C", "C:\\soft\\OpenSSL-Win64\\bin\\openssl.exe req -new -key ca.key -out ca.csr -subj /C=CN"}; //java生成证书 String[] cmdCertification = {"cmd", "/C", "C:\\soft\\OpenSSL-Win64\\bin\\openssl.exe x509 -req -days 365 -in ca.csr -signkey ca.key -out ca.crt"}; runCMD(cmdPrivateKey); runCMD(cmdCertificationReq); runCMD(cmdCertification); Properties props=System.getProperties(); //系统属性 System.out.println("用户的当前工作目录:"+props.getProperty("user.dir")); } }
对应目录下可以生成:
其中,ca.crt是自签名证书文件。ca.key是私钥。ca.csr只是生成证书的中间请求,是用来指定一些信息,这边只指定国家为CN。
加载全部内容