Java解析证书的例子 - JAVA

tTime());
System.out.println("主体名: "+cert.getSubject());
System.out.print("签名值: ");
DERBitString signature=cert.getSignature();
String strSign=new String(Hex.encode(signature.getBytes()));
System.out.println(strSign);
System.out.println("主体公钥: ");
SubjectPublicKeyInfo pukinfo=cert.getSubjectPublicKeyInfo();
System.out.println(" 标识符: "+pukinfo.getAlgorithmId().getObjectId().getId());

byte[] byPuk=pukinfo.getPublicKeyData().getBytes();
String strPuk=new String(Hex.encode(byPuk));
System.out.println(" 公钥值: "+strPuk);
// 证书的扩展信息
System.out.println("<<===========证书的扩展信息==============>>");
X509Extensions ext=cert.getTBSCertificate().getExtensions();
// 15 --key usage 19 ---basic constrains
// 31-- crl point 32 ---certificate policy
getKe

Java解析证书的例子(二)