Getting a PrivateKey object from a .p12 file in Java

Question

As the title suggests, I have .p12 file required for google service account api access. In order to get the credential to connect to the api, there\'s a field .setServiceAcc

Answer 1

If you get null from getKey() (eg. you are using BouncyCastle as a provider) you should find the last keyAlias element:

KeyStore keystore = KeyStore.getInstance("PKCS12", "BC");
keystore.load(this.getClass().getClassLoader().getResourceAsStream("keyFile.p12"), p12Password.toCharArray());
Enumeration aliases = keystore.aliases();
String keyAlias = "";
while (aliases.hasMoreElements()) {
    keyAlias = (String) aliases.nextElement();
}
PrivateKey key = (PrivateKey)keystore.getKey(keyAlias, pass);