SHA384 online Hash Generator

I was implementing an HTTPS client/server example just for learning purpose using the book "Implementing SSL / TLS Using Cryptography and PKI" by Joshua Davies. It contains an example implementation with C source code. I just tried to build a HTTPS client using that source code. But, in tls.c file it uses two macros MD5_BYTE_SIZE and SHA1_BYTE_SIZE and I can't see any values defined for these macros in that book. I tried with permutations of 16,24,32 for both macros but failed in SSL handshaking, and greater values causes segmentation fault. I hope if anybody familiar with this book can help me

What is the best way to create a SHA-1 for a very large file in pure Java6? How to implement this method:

public abstract String createSha1(java.io.File file);

I am using php mysqli_connect for login to a MySQL database (all on localhost)

<?php//DEFINE ('DB_USER', 'user2');//DEFINE ('DB_PASSWORD', 'pass2');DEFINE ('DB_USER', 'user1');DEFINE ('DB_PASSWORD', 'pass1');DEFINE ('DB_HOST', '127.0.0.1');DEFINE ('DB_NAME', 'dbname');$dbc = mysqli_connect(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);if(!$dbc){    die('error connecting to database');    }?>

this is the mysql.user table:

MySQL Server ini File:

[mysqld]# The default authentication plugin to be used when connecting to the serverdefault_authentication_plugin=caching_sha2_password#default_authentication_plugin=mysql_native_password

with caching_sha2_password in the MySQL Server ini file, it's not possible at all to login with user1 or user2;

error: mysqli_connect(): The server requested authentication method unknown to the client [caching_sha2_password] in...

with mysql_native_password in the MySQL Server ini file, it's possible to login with user1, but with user2, same error;

how can I login using caching_sha2_password on the mySql Server?

I've created a simple C# program that can hash a file (I'm focusing on images, as opposed to PDF's, text etc) that displays the hash only on the command line. I will create a function to output a file (unsure what type?) so that this can be referenced later.

The idea is that an image will travel from one location to another, and once it reaches the second destination it will be checked by the hashing program once more, locating the hash file associated with it, comparing it, and then producing the result (i.e. it is identical or not). The code I have is not very relevant, hence why I've not posted it - I'm mainly just looking for tips/hints or any documentation that might be of use here!

Thank you in advance.

Edit: Code is important so here it is

using System;using System.IO;using System.Security.Cryptography;class Hash{    static void Main(string[] args)    {        if (args.Length != 2)        {            byte[] hashValue = null;            if (!File.Exists(args[1]))            {                try                {                    FileStream fileStream = File.OpenRead(args[1]);                    fileStream.Position = 0;                    switch (args[0].ToUpper())                    {                        case "SHA512":                            // Compute the SHA512 hash of the fileStream.                            hashValue = SHA512.Create().ComputeHash(fileStream);                            return;                    }                    if (hashValue != null)                    {                        PrintHashData(args[0].ToUpper(), fileStream.Name, hashValue);                    }                    fileStream.Close();                }                catch (Exception ex)                {                    Console.WriteLine("Error: {0}", ex.Message);                }            }        }    }    private static void PrintHashData(string algorithm, string fileName, byte[] array)    {        Console.Write("File: {0}\r\n{1} Hash: ", fileName, algorithm);        for (int i = 0; i < array.Length; i++)        {            Console.Write(String.Format("{0:X2}", array[i]));        }        Console.WriteLine();    }}

I have a nested json (it was generated from an XML file).

I'm trying to hash a bunch of nested json extracted from the XML file and build a Merkle tree with all of them, but the problem is the individual json hash is not matching with the root of the Merkle tree.

The above process is completely working fine with a simple json.