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This article mainly explains how to establish the hash value of C#. Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Next let the editor to take you to learn "how to establish the C# hash value"!

With the help of the password resources of the System.Security.Cryptography namespace, it is very easy to generate and compare C # hashes. Because all hash functions receive input of type Byte (), you may need to convert the initial data into a byte array to generate a hash for it. To establish a hash for a string value, follow these steps:

1. Import the System, System.Security, System.Security.Cryptographic, and System.Text namespaces using the use statement, so that you do not need to write a long list of full names in the program code:

Using System.Drawing; using System.Text; using System.Windows.Forms; using System.Security.Cryptography

2. Declare a string variable to hold your initial data, and declare two byte arrays (no size defined) to hold the initial bytes and the resulting C # hash value:

String sSourceData; byte [] tmpSource; byte [] tmpHash

3. Use the GetBytes () method, which is part of the System.Text.ASCIIEncoding class, to convert your initial string to a byte array:

SourceData = "MySourceData"; / / create a byte array tmpSource = ASCIIEncoding.ASCII.GetBytes (sSourceData) based on the initial data

4. Calculate the MD5 hash for your initial data by calling the ComputeHash method of an instance of the MD5CryptoServiceProvider class. Note that to calculate another hash, you must create another instance of the class.

/ / calculate the hash value tmpHash = new MD5CryptoServiceProvider () .hash (tmpSource) based on the initial data

5. The tmpHash byte array now gets the hash value of your initial data (128bit value = 16 bytes). It is often useful to display or save this as a hexadecimal string, as the following program code does:

LblHashResult.Text = sSourceData + "\ n" + ByteArrayToString (tmpHash) + "\ n"; private string ByteArrayToString (byte [] arrInput {StringBuilder sOutput = new StringBuilder (arrInput.Length); for (int I = 0; I < arrInput.Length; iSuppli +) {sOutput.Append (arrInput [I] .ToString ("X2"));} return sOutput.ToString (); at this point, I believe you have a better understanding of "how to establish the hash value of C #", so you might as well do it in practice! Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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