var rowsAffected int64
		tx = db.getInstance()

		// the reflection length judgment of the optimized value
		reflectLen := reflectValue.Len()

		callFc := func(tx *DB) error {
			for i := 0; i < reflectLen; i += batchSize {
				ends := i + batchSize
				if ends > reflectLen {
					ends = reflectLen
				}

				subtx := tx.getInstance()
				subtx.Statement.Dest = reflectValue.Slice(i, ends).Interface()

            ASN1Sequence sequence = ASN1Sequence.getInstance(tagged, true);
            final Enumeration<ASN1Object> fields = sequence.getObjects();
            while (fields.hasMoreElements()) {
                tagged = (ASN1TaggedObject) fields.nextElement();
                switch (tagged.getTagNo()) {
                case 0:
                    sequence = ASN1Sequence.getInstance(tagged, true);

            final ASN1Sequence sequence = ASN1Sequence.getInstance(tagged, true);
            final Enumeration<?> fields = sequence.getObjects();
            while (fields.hasMoreElements()) {
                tagged = (ASN1TaggedObject) fields.nextElement();
                switch (tagged.getTagNo()) {
                case 0:
                    final ASN1Enumerated enumerated = ASN1Enumerated.getInstance(tagged, true);

    } catch (IllegalStateException expected) {
    } finally {
      Providers.setProviderList(providers);
    }
  }

  public void testMultipleUpdates() throws Exception {
    Mac mac = Mac.getInstance("HmacSHA1");
    mac.init(SHA1_KEY);
    mac.update("hello".getBytes(UTF_8));
    mac.update("world".getBytes(UTF_8));

    assertEquals(
        HashCode.fromBytes(mac.doFinal()),

                final KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
                keyStore.load(null, null);
                keyStore.setCertificateEntry("server", certificate);

                final TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());

        byte[] data = "Hi There".getBytes();

        // Calculate expected HMACT64 result manually
        MessageDigest md5 = MessageDigest.getInstance("MD5");
        byte[] ipad = new byte[64];
        byte[] opad = new byte[64];

        // HMACT64 specific: truncate key to 64 bytes if needed
        int keyLen = Math.min(key.length, 64);

    when {
      majorVersion != null && majorVersion >= 9 ->
        SSLContext.getInstance("TLS")
      else ->
        try {
          // Based on SSLSocket.getApplicationProtocol check we should
          // have TLSv1.3 if we request it.
          // See https://www.oracle.com/java/technologies/javase/8u261-relnotes.html
          SSLContext.getInstance("TLSv1.3")
        } catch (nsae: NoSuchAlgorithmException) {

            return MessageDigest.getInstance("MD5");
        } catch (final NoSuchAlgorithmException e) {
            throw new CIFSUnsupportedCryptoException(e);
        }
    }

    /**
     * Get a SHA-512 message digest instance.
     * @return SHA512 digest instance
     */
    public static MessageDigest getSHA512() {
        try {
            return MessageDigest.getInstance("SHA-512");

        assertNotNull(SingletonContext.getInstance()); // Should still initialize
    }

    @Test
    void testGetInstanceInitializesIfNull() {
        // Test getInstance initializes the context if it's null
        assertNull(getSingletonInstanceViaReflection()); // Ensure it's null initially
        CIFSContext context = SingletonContext.getInstance();
        assertNotNull(context);

      throws GeneralSecurityException, IOException {
    KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
    try (InputStream in = new FileInputStream(keystoreFile)) {
      keystore.load(in, password.toCharArray());
    }
    KeyManagerFactory keyManagerFactory =
        KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
    keyManagerFactory.init(keystore, password.toCharArray());