如何在Java中将生成的x509certificate转换为Hex

Question

我使用Java生成x509certificate，但我需要将此x509certificate转换为Hex。

X509Certificate generateX509Certificate() throws Exception

{

X509CertificateStructure x509CertificateStructure = generateX509CertificateHolder().toASN1Structure();

CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");

InputStream is1 = new ByteArrayInputStream(x509CertificateStructure.getEncoded());
X509Certificate x509Certificate = (X509Certificate)certificateFactory.generateCertificate(is1);
return x509Certificate;

其他替代方法是byte []，但我不知道如何将其转换为十六进制。 谢谢你的回答

Answer 1

我找到了解决方案

byte[] hex = x509Certificate.getEncoded();

  System.out.println("--------------------------------------");

  String hexText = DatatypeConverter.printHexBinary(hex);
  System.out.println(hexText);