.net中加密和解密

   public string Md5p(string strPassword)
    {

        MD5CryptoServiceProvider hashmd5;
        hashmd5 = new MD5CryptoServiceProvider();
        return BitConverter.ToString(hashmd5.ComputeHash(Encoding.Default.GetBytes(strPassword))).Replace("-", "").ToLower();
    }
    //加密了
    public string Encryptyiersan(string inp)
    {
        MD5CryptoServiceProvider hasher = new MD5CryptoServiceProvider();
        byte[] tBytes = Encoding.ASCII.GetBytes(inp);
        byte[] hBytes = hasher.ComputeHash(tBytes);
    

        StringBuilder sb = new StringBuilder();
        for (int c = 0; c < hBytes.Length; c++)
            sb.AppendFormat("{0:x2}", hBytes[c]);

        return (sb.ToString());
    }

//解密的时候直接在把文本框的值赋给加密的方法就行了