当我尝试使用证书转换字符串时，会引发exception
我有一个applet，用于签署文档，并将文档，签名和证书发送到服务器端。 在服务器端portlet接收这3个文件，所有文件都以base64格式存储，但是当我尝试获取证书时它会引发exception
java.security.cert.CertificateException: Could not parse certificate: java.io.IOException: Empty input at sun.security.provider.X509Factory.engineGenerateCertificate(X509Factory.java:104) applet边码：
public static byte[] certificate; public static String getCertificateString() { String str = ""; byte[] result = null; result = Base64.encode(certificate); for (int i = 0; i < result.length; i++) { str += (char) (result[i]); } return str; } //initialization of certificate from the store Certificate cert = store.getCertificate(aliasKey); certificate = cert.toString().getBytes();
在此之后，我将证书发送到portlet，需要validation标志。 但证书转换失败。
portlet代码：
String certificate = request.getParameter("cert"); byte[] cert_array = Base64.decode(certificate.getBytes()); try { cert = CertificateFactory.getInstance("X509").generateCertificate(new ByteArrayInputStream(cert_array)); }catch(Exception e){ e.printStackTrace(); }
此时，在try块中，引发了exception
好的，@ test1604你试试这样的东西，是实现X509TrustManager类，好的，我们走吧：
import java.security.cert.CertificateException; import java.security.cert.X509Certificate; public class YouNameClass implements X509TrustManager {... public YouNameClass() { super(); } }
并添加此方法，
private static void trustAllHttpsCertificates() throws Exception { // Create a trust manager that does not validate certificate chains: javax.net.ssl.TrustManager[] trustAllCerts = new javax.net.ssl.TrustManager[1]; javax.net.ssl.TrustManager tm = new YouNameClass(); trustAllCerts[0] = tm; javax.net.ssl.SSLContext sc = javax.net.ssl.SSLContext.getInstance("SSL"); sc.init(null, trustAllCerts, null); javax.net.ssl.HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory()); }
和方法覆盖：
@Override public void checkClientTrusted(X509Certificate[] arg0, String arg1) throws CertificateException { return; } @Override public void checkServerTrusted(X509Certificate[] arg0, String arg1) throws CertificateException { return; } @Override public X509Certificate[] getAcceptedIssuers() { return null; }
而已。 🙂
不要相信所有证书。 那是非常危险的。 如果你这样做，你也可以不使用HTTPS，只使用HTTP