Online MD5 Hash Generator

I am dealing with a stream of UUIDs. My end goal is to randomly divide those numbers into 10 buckets, i.e. put each one of them into any one of the 10 buckets in such a way that any given moment if I have dealt with N UUID numbers from that stream I should have approximately N/10 numbers in each bucket. I came with up with the following idea:

• Get the 16 byte array equivalent of the given UUID (since each UUID has 128 bits)
• Add up the unsigned value of the 16 bytes to get a positive integer sum.
• Get the sum modulo 100 value.
• The modulo value will belong to either of the 10 buckets depending on its value : Bucket 1 : [0, 9], Bucket 2 : [10, 19], ..... , Bucket 10 : [90, 99].

I tried this experiment for close to about 200,000 UUIDs (and did it with 8 different streams), and observed that each bucket has close to 10% of the total numbers (between range of 9.85% to 10.15%) which seems to be fairly random. My question is:

1. If instead of just taking the sum of the 16 bytes, if I instead take the hash value (let's say MD5 hash) of the UUID and then perform these steps, will I have a better chance of dividing them randomly? A more general question would be, Is there a mathematical way to visualize that hashing can help in these scenarios?
2. If you agree agree with point (1), then what should be a good hashing algorithm to do the same.
3. If you don't agree with point (1), then can you suggest me a better algorithm of doing the same.

I'm struggling with difference in MD5 result consumption in Kotlin (Java) and C#. I've found this article thats suggests solution:

How can you generate the same MD5 Hashcode in C# and Java?

But I would like to understand logic behind this. I've done couple of tests. C#:

var data = MD5.Create().ComputeHash(Encoding.UTF8.GetBytes("123456"));var s = Encoding.UTF8.GetString(data, 0, data.Length);

Produces following byte sequence (data variable):

 225, 10, 220, 57, 73, 186, 89, 171, 190, 86, 224, 87, 242, 15, 136, 62

If I use Kotlin (Java):

val md = MessageDigest.getInstance("MD5")val data = md.digest("123456".toByteArray())val s = String(data)val ls2 = data.map { x-> x.toUByte() }

So Java has bytes with sign, and c# unsigned (ls2 - contains same unsigned bytes as c# example). Fine. I would like to get string value - I convert both byte arrays to string and I got different strings (s variable). What do I miss?

Thanks.

I am trying to compare the hash of the files that are in the Google Drive but I am unsure how to do it. I have a compare hash code block:

public static void compareHash(string path)    {        DriveService service = GetService();        FilesResource.ListRequest FileListRequest = service.Files.List();        IList<Google.Apis.Drive.v3.Data.File> files = FileListRequest.Execute().Files;        List<GoogleDriveFiles> FileList = new List<GoogleDriveFiles>();        foreach (var file in files)        {            if (!file.Md5Checksum.Equals(path))            {             //    Upload the file as usual            }            else {             //   I want to inform user that file is duplicated and it will not be uploaded            }        }    }

And what I wanted is actually if there is a same hash, then a message should pop-up informing the user about it and if it is a new file then, the user would be able to upload the file.

This is the code for my upload button razor.

                $('#fileUpload').click(function (e) {                    if ($('#file').val() === "") {                        Swal.fire({                            title: 'Nothing',                            text: 'No file selected',                            type: 'error',                            confirmButtonText: 'Again!!',                            timer: 4000                        })                    }                        else {                            Swal.fire({                                title: 'Wait awhile...',                                text: 'File will be uploaded shortly',                                type: 'success',                                confirmButtonText: 'Okay, cool',                                timer: 4000                            })                    }                });            </script>

I want to hear your opinion on my following thought of encrypting passwords for my usage.

I have a JFrame program which uses a textfield (username) and a passwordfield to "login".I want the password to be encrypted and then tested on the password that is saved in my database (Tables: Username, password <- Password is encrypted)

My idea is to create a MD5 hash value (like here explained) of the password that is saved in the database. When logging in the software the password should be encrypted (via MD5 like here) and tested against the one in the db.

Is there a more efficient way, or does mine even work?

Thanks in advance <3

When I sent a password from the register page that encrypted by md5 and when I need to include it in the login page I don't know how I include it.

when I include it as a string or directly it appears as md5 characters and the login is not response, the question is: How can I encrypt md5 on the login page?

please help!

$pswd = md5($pswd);$result = mysqli_query($connect,"SELECT * FROM test1 WHERE username='$username' AND password='$password'");$row = mysqli_fetch_array($result,MYSQLI_ASSOC);echo $row['password'];