Hashed or Encrypted passwords are not supported with auto-generated keys

Question

I have create a Membership provider and changed my web.config to

Answer 1

Was a bit of a schlep to go hunting for the "key generator" snippet in the MSDN link Steven Robbins referred to in his answer, so I am adding it here for quick reference. So this is not a standalone answer. It is supplemental to the accepted answer.

FROM MSDN

The following code shows how to generate random key values. Compile the code to create a console application, and then pass the required key size as a command line argument expressed as the desired number of hexadecimal characters. Each byte is represented by two hexadecimal characters; therefore, to request a 32-byte key, pass 64 as a command line argument. If you do not specify an argument, the code returns a 128 hexadecimal character (64-byte) key.

using System;
using System.Text;
using System.Security;
using System.Security.Cryptography;

class App {
  static void Main(string[] argv) {
    int len = 128;
    if (argv.Length > 0)
      len = int.Parse(argv[0]);
    byte[] buff = new byte[len/2];
    RNGCryptoServiceProvider rng = new 
                            RNGCryptoServiceProvider();
    rng.GetBytes(buff);
    StringBuilder sb = new StringBuilder(len);
    for (int i=0; i

Also, goes inside of , like this: