encrypt and decrypt password using asp.net with C#

encrypt function

private string encryp(string password)
    {
        string msg = string.Empty;
        byte[] encode = new byte[password.Length];
        encode = Encoding.UTF8.GetBytes(password);
        msg = Convert.ToBase64String(encode);
        return msg;
    }












Decrypt function

    private string decrypt(string encrypt)
    {
        string decryp = string.Empty;
        UTF8Encoding encodedpass = new UTF8Encoding();
        Decoder decode = encodedpass.GetDecoder();
        byte[] todecodedbyte = Convert.FromBase64String(encrypt);
        int charcount = decode.GetCharCount(todecodedbyte, 0, todecodedbyte.Length);
        char[] dechodedchar = new char[charcount];
        decode.GetChars(todecodedbyte, 0, todecodedbyte.Length, dechodedchar, 0);
        decryp = new string(dechodedchar);
        return decryp;
    }