}
        if (salt == null || salt.length < 16) {
            throw new CIFSException("Invalid preauth salt: minimum 16 bytes required");
        }
        if (!isHashAlgorithmSupported(hashAlgorithm)) {
            throw new CIFSException("Unsupported hash algorithm: " + hashAlgorithm);
        }

        PreauthIntegrityContext context = new PreauthIntegrityContext(salt, hashAlgorithm);