static byte[] rsaDecryptWithPrivateKey(PrivateKey javaKey, int openSSLPadding, byte[] input) {
        return rsaOpWithPrivateKey(javaKey, openSSLPadding, Cipher.DECRYPT_MODE, input);
    }
Finds providers that are not us that provide the requested algorithms.
common/src/main/java/org/conscrypt/CryptoUpcalls.java