fun signDataTest(file: File): ByteArray? {
        System.setProperty("com.sun.security.enableCRLDP", "true")
        System.setProperty("com.ibm.security.enableCRLDP", "true")
        val fileData = Files.readAllBytes(file.toPath())
        val password = "123"
        val alias = "proud_sosow"
        val keyStore = KeyStore.getInstance(JCSP.HD_STORE_NAME, JCSP.PROVIDER_NAME)
        keyStore.load(null, null)
        val certificate = keyStore.getCertificate(alias) as X509Certificate
        val privateKey = keyStore.getKey(alias, password.toCharArray()) as PrivateKey
        val chain: MutableList<X509Certificate> = mutableListOf()
        for (certificate in keyStore.getCertificateChain(alias)) {
            Log.i("@@@@","Certificate is ${certificate}")
            chain.add(certificate as X509Certificate)
        }
        val cAdESSignature = CAdESSignature(false)
        cAdESSignature.certificateStore = CollectionStore(chain)
        val signatureStream = ByteArrayOutputStream()
        cAdESSignature.open(signatureStream)
        cAdESSignature.update(fileData)
        cAdESSignature.close()
        signatureStream.close()
        return signatureStream.toByteArray()
    }