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) return null; KeyStore clientKeyStore = KeyStore.getInstance("BKS"); clientKeyStore.load(bksFile, password.toCharArray()); KeyManagerFactory keyManagerFactory = KeyManagerFactory .getInstance(KeyManagerFactory.getDefaultAlgorithm()); keyManagerFactory.init(clientKeyStore, password.toCharArray()); return keyManagerFactory.getKeyManagers(); } catch (KeyStoreException e) { e.printStackTrace(); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (UnrecoverableKeyException e) { e.printStackTrace(); } catch (CertificateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } return null; } }