static OpenSSLKey wrapPlatformKey(RSAPrivateKey rsaPrivateKey) {
        return new OpenSSLKey(NativeCrypto.getRSAPrivateKeyWrapper(rsaPrivateKey, rsaPrivateKey
                .getModulus().toByteArray()), true);
    }
An implementation of {@link java.security.PrivateKey} for RSA keys which uses BoringSSL to
perform all the operations.
common/src/main/java/org/conscrypt/OpenSSLRSAPrivateKey.java