Chapter 50: Work with SHA1 in C#

in this project you see how to work with SHA1 cryptographic hash function. for example get hash from string and how to crack SHA1 hash.

source compelete on github: https://github.com/mahdiabasi/SHA1Tool

Section 50.1: #Generate SHA1 checksum of a file

first you add System.Security.Cryptography namespace to your project

public string GetSha1Hash(string filePath)

{

using (FileStream fs = File.OpenRead(filePath))

{

SHA1 sha = new SHA1Managed();

return BitConverter.ToString(sha.ComputeHash(fs));

}

}

Section 50.2: #Generate hash of a text

public static string TextToHash(string text)

{

var sh = SHA1.Create();

var hash = new StringBuilder();

byte[] bytes = Encoding.UTF8.GetBytes(text); byte[] b = sh.ComputeHash(bytes);

foreach (byte a in b)

{

var h = a.ToString("x2"); hash.Append(h);

}

return hash.ToString();

}