Java tutorial
//package com.java2s; import java.io.IOException; import java.io.InputStream; import java.security.KeyStore; import java.security.KeyStoreException; import java.security.NoSuchAlgorithmException; import java.security.UnrecoverableKeyException; import java.security.cert.CertificateException; import javax.net.ssl.KeyManager; import javax.net.ssl.KeyManagerFactory; public class Main { private static KeyManager[] prepareKeyManager(InputStream bksFile, String password) { try { if (bksFile != null && password != null) { KeyStore e = KeyStore.getInstance("BKS"); e.load(bksFile, password.toCharArray()); KeyManagerFactory keyManagerFactory = KeyManagerFactory .getInstance(KeyManagerFactory.getDefaultAlgorithm()); keyManagerFactory.init(e, password.toCharArray()); return keyManagerFactory.getKeyManagers(); } return null; } catch (KeyStoreException var4) { var4.printStackTrace(); } catch (NoSuchAlgorithmException var5) { var5.printStackTrace(); } catch (UnrecoverableKeyException var6) { var6.printStackTrace(); } catch (CertificateException var7) { var7.printStackTrace(); } catch (IOException var8) { var8.printStackTrace(); } catch (Exception var9) { var9.printStackTrace(); } return null; } }