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Cryptography - Hash
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using System; | |
using System.Security.Cryptography; | |
namespace CryptographyInDotNet | |
{ | |
public class Hash | |
{ | |
public static byte[] GenerateSalt() | |
{ | |
const int saltLength = 32; | |
using (var randomNumberGenerator = new RNGCryptoServiceProvider()) | |
{ | |
var randomNumber = new byte[saltLength]; | |
randomNumberGenerator.GetBytes(randomNumber); | |
return randomNumber; | |
} | |
} | |
private static byte[] Combine(byte[] first, byte[] second) | |
{ | |
var ret = new byte[first.Length + second.Length]; | |
Buffer.BlockCopy(first, 0, ret, 0, first.Length); | |
Buffer.BlockCopy(second, 0, ret, first.Length, second.Length); | |
return ret; | |
} | |
public static byte[] HashPasswordWithSalt(byte[] toBeHashed, byte[] salt) | |
{ | |
using (var sha256 = SHA256.Create()) | |
{ | |
return sha256.ComputeHash(Combine(toBeHashed, salt)); | |
} | |
} | |
} | |
} |
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using System; | |
using System.Text; | |
namespace CryptographyInDotNet | |
{ | |
class Program | |
{ | |
static void Main() | |
{ | |
const string password = "V3ryC0mpl3xP455w0rd"; | |
byte[] salt = Hash.GenerateSalt(); | |
Console.WriteLine("Hash Password with Salt Demonstration in .NET"); | |
Console.WriteLine("---------------------------------------------"); | |
Console.WriteLine(); | |
Console.WriteLine("Password : " + password); | |
Console.WriteLine("Salt = " + Convert.ToBase64String(salt)); | |
Console.WriteLine(); | |
var hashedPassword1 = Hash.HashPasswordWithSalt( | |
Encoding.UTF8.GetBytes(password), | |
salt); | |
Console.WriteLine(); | |
Console.WriteLine("Hashed Password = " + Convert.ToBase64String(hashedPassword1)); | |
Console.WriteLine(); | |
Console.ReadLine(); | |
} | |
} | |
} |
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