MD5 C# with Example

Hash functions map binary strings of an arbitrary length to small binary strings of a fixed length. 
The MD5 algorithm is a widely used hash function producing a 128-bit hash value (16 Bytes, 32 Hexdecimal 
characters). 
The ComputeHash method of the System.Security.Cryptography.MD5 class returns the hash as an array of 16 
bytes. 
Example: 
using System; 
using System.Security.Cryptography; 
using System.Text; 
internal class Program 
{ 
private static void Main() 
{ 
var source = "Hello World!"; 
// Creates an instance of the default implementation of the MD5 hash algorithm. 
using (var md5Hash = MD5.Create()) 
{ 
// Byte array representation of source string 
var sourceBytes = Encoding.UTF8.GetBytes(source); 
// Generate hash value(Byte Array) for input data 
var hashBytes = md5Hash.ComputeHash(sourceBytes); 
// Convert hash byte array to string 
var hash = BitConverter.ToString(hashBytes).Replace("-", string.Empty); 
// Output the MD5 hash 
Console.WriteLine("The MD5 hash of " + source + " is: " + hash); 
} 
} 
} 
Output: The MD5 hash of Hello World! is: ED076287532E86365E841E92BFC50D8C 
Security Issues: 
Like most hash functions, MD5 is neither encryption nor encoding. It can be reversed by brute-force attack and 
suffers from extensive vulnerabilities against collision and preimage attacks.