} else if ("md5".equalsIgnoreCase(digestAlgorithm)) {
            logger.warn("MD5 digest is deprecated due to its collision vulnerabilities. Please consider migrating to SHA-256. algorithm={}",
                    digestAlgorithm);
            oneWay = new OneWayCryptographer("MD5", OneWayCryptographer.ENCODING_UTF8);
        } else {

         * Returns the algorithm name, usually used as key, never {@code null} value. The name is a standard name of
         * algorithm (if applicable) or any other designator that is algorithm commonly referred with. Example: "SHA-1".
         */
        @Nonnull
        String getName();

        /**
         * Returns the file extension to be used for given checksum file (without leading dot), never {@code null}. The

        });
    }

    @Test
    @DisplayName("Test hash algorithm names")
    public void testHashAlgorithmNames() {
        assertEquals("SHA-512", PreauthIntegrityService.getHashAlgorithmName(PreauthIntegrityService.HASH_ALGO_SHA512));
        assertTrue(PreauthIntegrityService.getHashAlgorithmName(0xFF).startsWith("Unknown"));
    }

    @Test

        }
    }

    private String hashString(final String input) {
        try {
            final MessageDigest md = MessageDigest.getInstance("SHA-256");
            final byte[] hash = md.digest(input.getBytes(StandardCharsets.UTF_8));
            final StringBuilder sb = new StringBuilder();
            for (final byte b : hash) {

    private byte[] calculateBindingHash(byte[] bindingInfo) throws IOException {
        try {
            MessageDigest digest = MessageDigest.getInstance("SHA-256");
            return digest.digest(bindingInfo);
        } catch (NoSuchAlgorithmException e) {
            throw new IOException("SHA-256 not available", e);
        }
    }

    private void performHealthCheck() {
        for (ChannelInfo channel : channels.values()) {

// Therefore, there is no MarshalJSON implementation.
func (c *ciphertext) UnmarshalJSON(text []byte) error {
	const (
		IVSize    = 16
		NonceSize = 12

		AES256GCM        = "AES-256-GCM-HMAC-SHA-256"
		CHACHA20POLY1305 = "ChaCha20Poly1305"
	)

	type JSON struct {
		Algorithm string `json:"aead"`
		ID        string `json:"id"`
		IV        []byte `json:"iv"`
		Nonce     []byte `json:"nonce"`

        if (context != null) {
            System.arraycopy(context, 0, input, pos, context.length);
        }

        // Use SHA-256 for derivation (placeholder)
        try {
            java.security.MessageDigest md = java.security.MessageDigest.getInstance("SHA-256");
            byte[] hash = md.digest(input);
            System.arraycopy(hash, 0, derived, 0, Math.min(length, hash.length));

        map.put("キャ", new String[] { "kya" });
        map.put("キュ", new String[] { "kyu" });
        map.put("キョ", new String[] { "kyo" });

        map.put("シャ", new String[] { "sya", "sha" });
        map.put("シュ", new String[] { "syu", "shu" });
        map.put("ショ", new String[] { "syo", "sho" });
        map.put("シェ", new String[] { "sye", "she" });

        map.put("チャ", new String[] { "tya", "cha" });

    private byte[] calculateBindingHash(byte[] bindingInfo) throws IOException {
        try {
            MessageDigest digest = MessageDigest.getInstance("SHA-256");
            return digest.digest(bindingInfo);
        } catch (NoSuchAlgorithmException e) {
            throw new IOException("SHA-256 not available", e);
        }
    }
    
    public ChannelInfo selectChannel(SMBMessage message) {

- [PRF](#prf): HMAC-SHA-256
- [AEAD](#aead): AES-256-GCM if the CPU supports AES-NI, ChaCha20-Poly1305 otherwise. More specifically AES-256-GCM is only selected for X86-64 CPUs with AES-NI extension.