public static string genHash(string UniqueValue)
{
string plainText = UniqueValue;
string hash = SimpleHash.ComputeHash(plainText, SimpleHashAlgorithm.MD5, null);
return(hash);
}
public static string getUserVerifyEmailHash()
{
string plainText = "ve" + Guid.NewGuid().ToString();
string hash = SimpleHash.ComputeHash(plainText, SimpleHashAlgorithm.MD5, null);
if (hash.Length > 50)
{
hash = hash.Remove(49);
}
return(hash);
}
/// <summary>
/// Generates URL Safe Hash From GUID
/// </summary>
/// <param name="prefix">Salt Value</param>
/// <param name="limit">The maximum amount of characters permitted</param>
/// <returns>A URL Safe Hash Value</returns>
/// <author>MI Laher 2014-06-25</author>
public static string genUrlSafeHashFromGuid(string prefix, int?limit = null)
{
//get hash as per normal
string plainText = prefix + Guid.NewGuid().ToString();
string hash = SimpleHash.ComputeHash(plainText, SimpleHashAlgorithm.MD5, null);
if (limit.HasValue && limit > 0)
{
if (hash.Length > 50)
{
hash = hash.Remove(49);
}
}
//list of whitelisted characters
var allowedCharsLetters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
var allowedCharsNumbers = "0123456789";
var allowedCharsSpecial = @"-_.,()[]{}#@";
var allowedChars = allowedCharsLetters + allowedCharsNumbers + allowedCharsSpecial;
Random r = new Random(); //a random number generator
var hashCharArray = hash.ToCharArray(); //get char array version of hash (non read only)
//loop through characters to identify and replace illegal characters
for (int i = 0; i < hashCharArray.Length; i++)
{
var character = hashCharArray[i];
if (!allowedChars.Contains(character)) //if illegal character found replace with any whitelisted character
{
int rIdx = r.Next(0, allowedChars.Length - 1);
character = allowedChars[rIdx];
}
if (i == hashCharArray.Length - 1)
{
if (allowedCharsSpecial.Contains(character))
{
int rIdx = r.Next(0, allowedCharsLetters.Length - 1);
character = allowedChars[rIdx];
}
}
hashCharArray[i] = character;
}
hash = new string(hashCharArray);
hash.Trim();
return(hash);
}
public static string genHashFromGuid(string prefix, int?limit = null)
{
string plainText = prefix + Guid.NewGuid().ToString();
string hash = SimpleHash.ComputeHash(plainText, SimpleHashAlgorithm.MD5, null);
if (limit.HasValue && limit > 0)
{
if (hash.Length > 50)
{
hash = hash.Remove(49);
}
}
return(hash);
}
public static string encrypt(string password)
{
return(SimpleHash.ComputeHash(password, SimpleHashAlgorithm.SHA512, null));
}
