SHA-1 Hash eines Strings erzeugen

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// using System.Security.Cryptography;

/// <summary>
/// Gets the SH a1 hash.
/// </summary>
/// <param name="text">The text.</param>
/// <returns></returns>
public static string GetSHA1Hash(string text)
{
    var SHA1 = new SHA1CryptoServiceProvider();

    byte[] arrayData;
    byte[] arrayResult;
    string result = null;
    string temp = null;

    arrayData = Encoding.ASCII.GetBytes(text);
    arrayResult = SHA1.ComputeHash(arrayData);
    for (int i = 0; i < arrayResult.Length; i++)
    {
        temp = Convert.ToString(arrayResult[i], 16);
        if (temp.Length == 1)
            temp = "0" + temp;
        result += temp;
    }
    return result;
}