Method Hash

java/lib/src/main/java/io/github/ccxt/base/Crypto.java:158–180

(Object request2, Object hash, Object digest2)

    // ====================================================

    public static Object Hash(Object request2, Object hash, Object digest2) {
        String algorithm = (hash == null) ? null : toString(hash);
        String digest = (digest2 == null) ? "hex" : toString(digest2);

        // If the caller already passed raw bytes, hash those directly.
        // Otherwise treat the value as a string and hash its UTF-8 encoding.
        byte[] input = (request2 instanceof byte[]) ? (byte[]) request2 : toUtf8(request2);

        byte[] signature;
        switch (algorithm) {
            case "sha256": signature = digestBytes("SHA-256", input); break;
            case "sha512": signature = digestBytes("SHA-512", input); break;
            case "sha384": signature = digestBytes("SHA-384", input); break;
            case "sha1":   signature = digestBytes("SHA-1",   input); break;
            case "md5":    signature = digestBytes("MD5",     input); break;
            case "keccak":
            case "sha3":   signature = keccakDigest(input); break;
            default:       throw new IllegalArgumentException("Unsupported hash algo: " + algorithm);
        }

        if ("binary".equals(digest)) return signature;
        return "hex".equals(digest) ? binaryToHex(signature) : BinaryToBase64(signature);
    }

    private static byte[] digestBytes(String algo, byte[] data) {
        try {