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-\documentclass{article}
-
-\setlength{\textwidth}{6.5in} % 1 inch side margins
-\setlength{\textheight}{9in} % ~1 inch top and bottom margins
-
-\setlength{\headheight}{0in}
-\setlength{\topmargin}{0in}
-\setlength{\headsep}{0in}
-
-\setlength{\oddsidemargin}{0in}
-\setlength{\evensidemargin}{0in}
-
-\title{\textbf{Botan Tutorial}}
-\author{Jack Lloyd \\
-        \texttt{[email protected]}}
-\date{2010/08/07}
-
-\newcommand{\filename}[1]{\texttt{#1}}
-\newcommand{\manpage}[2]{\texttt{#1}(#2)}
-
-\newcommand{\macro}[1]{\texttt{#1}}
-
-\newcommand{\function}[1]{\textbf{#1}}
-\newcommand{\type}[1]{\texttt{#1}}
-\renewcommand{\arg}[1]{\textsl{#1}}
-\newcommand{\variable}[1]{\textsl{#1}}
-
-\begin{document}
-
-\maketitle
-
-\tableofcontents
-
-\parskip=5pt
-\pagebreak
-
-\section{Introduction}
-
-This document essentially sets up various simple scenarios and then
-shows how to solve the problems using botan. It's fairly simple, and
-doesn't cover many of the available APIs and algorithms, especially
-the more obscure or unusual ones. It is a supplement to the API
-documentation and the example applications, which are included in the
-distribution.
-
-\section{Initializing the Library}
-
-The first step to using botan is to create a \type{LibraryInitializer}
-object, which handles creating various internal structures, and also
-destroying them at shutdown.
-
-\begin{verbatim}
-#include <botan/botan.h>
-
-int main()
-   {
-   Botan::LibraryInitializer init;
-   return 0;
-   }
-\end{verbatim}
-
-If your application is multi-threaded, you need to tell botan this so
-that it will use locking where necessary. This is done by passing a
-string to the constructor of \type{LibraryInitializer}:
-
-\begin{verbatim}
-    Botan::LibraryInitializer init("thread_safe=yes");
-\end{verbatim}
-
-\section{Introduction to Pipe}
-
-Most operations in botan are specified in terms of transformations on
-streams. The class that handles the I/O and management for these
-streams is called \type{Pipe}. You can construct a \type{Pipe} with
-one or more \type{Filter}s, which sequentially process messages. You
-can only update a single message at a time, but you can leave the
-final output contents in a \type{Pipe} and read them out as desired.
-
-Here is how you might hex encode two messages:
-
-\begin{verbatim}
-   std::string message1 = "this is the first message";
-   const byte message2[] = "a second message";
-   Pipe pipe(new Hex_Encoder);
-
-   pipe.start_msg(); // must be called before writing to the pipe
-   pipe.write(message1);
-   pipe.end_msg(); // must be called to signal completion
-
-   /*
-   process_msg(x) is equivalent to calling
-      start_msg(); write(x); end_msg();
-   */
-   pipe.process_msg(message2);
-
-   Pipe::message_id n = pipe.message_count(); // returns 2
-
-   /* you can read a message as a string, here we read message 0 */
-   std::string first_result = pipe.read_all_as_string(0);
-
-   /* or a piece at a time using array/length, now we'll read the
-      second message (message id 1)
-   */
-
-   byte output[4096] = { 0 };
-   u32bit got = read(output, sizeof(output), 1);
-   if(got >= sizeof(output))
-     // have to read again to get more of the message
-\end{verbatim}
-
-You can also read output while the message is still active (before the
-call to \function{end\_msg}), using the same interfaces. You can find
-out how much data is currently available for a particular \type{Pipe}
-by calling the member function \function{remaining}, which takes a
-message sequence number and returns the number of bytes that are
-currently available to read from that message.
-
-\section{Hashing a File}
-
-Hashing a file is done using a \type{Hash\_Filter}, which takes a string
-which specifies which hash function you want to use:
-
-\begin{verbatim}
-   Pipe pipe(new Hash_Filter("SHA-256"));
-\end{verbatim}
-
-The output of a \type{Hash\_Filter} is raw binary. The filter will not
-produce any output at all until you call \function{end\_msg}.
-
-\section{Symmetric Cryptography}
-
-
-
-\subsection{Authentication}
-
-\subsection{User Authentication}
-
-\section{Public Key Cryptography}
-
-
-\end{document}