Describe the bug

In TlsUtil.keyManager(), the KeyManagerFactory is instantiated using the default algorithm of TrustManagerFactory instead of KeyManagerFactory:

Why it matters

Depending on the JVM configuration, the default algorithm for TrustManagerFactory may not be a valid algorithm name for KeyManagerFactory, which would cause a NoSuchAlgorithmException.

Expected behavior

KeyManagerFactory kmf =
    KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());