Germany
using System;
using System.Security.Cryptography;
using System.Text;
namespace ComputeAHash_csharp
{
/// <summary>
/// Summary description for Class1.
/// </summary>
class Class1
{
static void Main(string[] args)
{
string sSourceData;
byte[] tmpSource;
byte[] tmpHash;
sSourceData = "MySourceData";
//Create a byte array from source data
tmpSource = ASCIIEncoding.ASCII.GetBytes(sSourceData);
//Compute hash based on source data
tmpHash = new MD5CryptoServiceProvider().ComputeHash(tmpSource);
Console.WriteLine(ByteArrayToString(tmpHash));
sSourceData = "NotMySourceData";
tmpSource = ASCIIEncoding.ASCII.GetBytes(sSourceData);
byte[] tmpNewHash;
tmpNewHash = new MD5CryptoServiceProvider().ComputeHash(tmpSource);
bool bEqual = false;
if (tmpNewHash.Length == tmpHash.Length)
{
int i=0;
while ((i < tmpNewHash.Length) && (tmpNewHash[i] == tmpHash[i]))
{
i += 1;
}
if (i == tmpNewHash.Length)
{
bEqual = true;
}
}
if (bEqual)
Console.WriteLine("The two hash values are the same");
else
Console.WriteLine("The two hash values are not the same");
Console.ReadLine();
}
static string ByteArrayToString(byte[] arrInput)
{
int i;
StringBuilder sOutput = new StringBuilder(arrInput.Length);
for (i=0;i < arrInput.Length -1; i++)
{
sOutput.Append(arrInput[i].ToString("X2"));
}
return sOutput.ToString();
}
}
}
