如何从p12证书(包含证书+私钥)实例化javax.security.X509Certficate对象

Question

X509Certificate只能使用证书(.cer文件)的内容进行实例化.如何使用包含证书和私钥的.p12文件来实例化此对象？

Answer 1

这是你需要的:

InputStream inStream = new FileInputStream("c:/certificate.p12");

KeyStore ks = KeyStore.getInstance("PKCS12");
ks.load(inStream, "password".toCharArray());  

String alias = ks.aliases().nextElement();
certificate = (X509Certificate) ks.getCertificate(alias);