Components/Enumerations/SecurityEnums.cs中
    public enum UserPasswordFormat {
        ClearText = 0,
        MD5Hash = 1,
        Sha1Hash = 2,
        Encyrpted = 3,
        DVMD5 = 4//增加的 by waterboy
    }
Components/Users.cs

public static string Encrypt(UserPasswordFormat format, string cleanString, string salt)
        {
   Byte[] clearBytes;
   Byte[] hashedBytes;

   System.Text.Encoding encoding = System.Text.Encoding.GetEncoding( AspNetForums.Configuration.ForumConfiguration.GetConfig().PasswordEncodingFormat );

   if( encoding == null ) {
    throw new AspNetForums.Components.ForumException( ForumExceptionType.UnknownError, "An unknown encoding type (" +  AspNetForums.Configuration.ForumConfiguration.GetConfig().PasswordEncodingFormat + ") was specified in the web config file for the property 'passwordEncodingFormat'");
   }

   //clearBytes = encoding.GetBytes( salt.ToLower().Trim() + cleanString.ToLower().Trim() );
   // fix to not force to lowercase, stronger encryption.
   //
   clearBytes = encoding.GetBytes( salt.ToLower().Trim() + cleanString.Trim() );

   switch (format)
   {
    case UserPasswordFormat.ClearText:
     return cleanString;
    case UserPasswordFormat.Sha1Hash:
     // Force the string to lower case and add the salt
     //
//     clearBytes = encoding.GetBytes(salt.Length == 0 ? cleanString : salt + cleanString );
     hashedBytes = ((HashAlgorithm) CryptoConfig.CreateFromName("SHA1")).ComputeHash(clearBytes);

     return BitConverter.ToString(hashedBytes);
     //return Convert.ToBase64String(hashedBytes);
    case UserPasswordFormat.DVMD5://增加的 by waterboy
     return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(cleanString,"md5").ToLower().Substring(8,16);//增加的
    case UserPasswordFormat.MD5Hash:
    case UserPasswordFormat.Encyrpted:
    default:
     // TDD 3/16/2004
     // This algorithm was changed to UTF8 which is not compatible with the existing passwords aleady stored
     // so I'm changing it back to use Unicode encoding like it was originally written with the addition of salt.
     // Force the string to lower case and add the salt
     //    clearBytes = System.Text.Encoding.UTF8.GetBytes(salt != null && salt != String.Empty ? salt.ToLower().Trim() + cleanString.ToLower().Trim() : cleanString.ToLower().Trim() );
     //    hashedBytes = ((HashAlgorithm) CryptoConfig.CreateFromName("MD5")).ComputeHash(clearBytes);

//     clearBytes = encoding.GetBytes(salt == null ? cleanString.ToLower() : salt.ToLower().Trim() + cleanString.ToLower().Trim() );
     hashedBytes = ((HashAlgorithm) CryptoConfig.CreateFromName("MD5")).ComputeHash(clearBytes);

     return BitConverter.ToString(hashedBytes);
     //return Convert.ToBase64String(hashedBytes);                     
   }
        }



只需要注意注释“增加的”

我已经测试通过。