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  • JAVA 读出证书的信息

    先生成:

    1 产生密钥
    D:/>keytool -genkey -alias wenger -keysize 1024 -keypass abcdef -keystore myKeys
    tore -storepass abcdef -dname "CN=chen sr, OU=tanglab, O=lab, L=gz, ST=gd, C=cn"

    2 导出密钥,用证书的形式保存
    D:/>keytool -export -alias wenger -file mycert.cer -keystore myKeystore -storepass abcdef
    保存在文件中的认证 <mycert.cer>


    import java.io.*;

    import java.security.cert.*;

    public class TestCert {
      
    public static void main(String[] args) {
        
    try {
          FileInputStream fis 
    = new FileInputStream("mycert.cer");
          CertificateFactory cf
    =CertificateFactory.getInstance("X509");
          X509Certificate c
    =(X509Certificate) cf.generateCertificate(fis);
          System.out.println(
    "Certficate for" + c.getSubjectDN());
          System.out.println(
    "Generated with "+c.getSigAlgName());
        }

        
    catch (FileNotFoundException ex) {
        }

        
    catch (CertificateException ex) {
          
    /** @todo Handle this exception */
        }


      }

    }



    输出:
    Certficate forCN=chen sr, OU=tanglab, O=lab, L=gz, ST=gd, C=cn

    Generated with SHA1withDSA



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  • 原文地址:https://www.cnblogs.com/xiaowangba/p/6314505.html
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