java.security.KeyStoreException: java.lang.NullPointerException: No password supplied for PKCS#12 KeyStore.

	at ru.CryptoPro.ssl.cl_38.<init>(Unknown Source)
	at ru.CryptoPro.ssl.KeyManagerFactoryImpl$GostX509.engineInit(Unknown Source)
	at javax.net.ssl.KeyManagerFactory.init(Unknown Source)
... [вырезаны вызовы]

Caused by: java.lang.NullPointerException: No password supplied for PKCS#12 KeyStore.
	at org.bouncycastle.jce.provider.JDKPKCS12KeyStore.engineLoad(Unknown Source)
	at java.security.KeyStore.load(Unknown Source)
	... 32 more

String store = ...; // keystore location
String password = ...; // keystore password

//load key from pfx file
KeyStore keyStore = KeyStore.getInstance("PKCS12", BouncyCastleProvider.PROVIDER_NAME)
FileInputStream fis = new FileInputStream(store);
try {
    keyStore.load(fis, Utils.NVL(password).toCharArray());
} finally {
    if (fis != null) fis.close();
}

KeyManagerFactory factory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
factory.init(keyStore, password.toCharArray()); // exception thrown here
KeyManager[] keyManagers = factory.getKeyManagers();

TrustManager[] trustManagers = ...;

...

SSLContext context = SSLContext.getInstance(protocol);
context.init(keyManagers, trustManagers, null);

Connection connection = ...;
connection.setSSLSocketFactory(context.getSSLSocketFactory());

...