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\newacronym{DES}{DES}{Data Encryption Standard}
\newacronym{AES}{AES}{Advanced Encryption Standard}
\newacronym{RSA}{RSA}{Rivest–Shamir–Adleman Encryption}




\title{Cryptography}
\author{Erik Neller}
\date{\today}

\begin{document}
\maketitle
\section{Introduction}
Cryptography is ubiquitous in our modern world.
While the origins of cryptography date back thousands of years, evidence of its use in ancient is sparse.
\cite{luenberger}
Most of its use seemed to be reserved for political and military leaders, e.g. notably Mary Queen of Scots,
who while in prison, plotted to kill Queen Elizabeth using encrypted letters \cite{enwiki:maryofscots}.
With the widespread adoption of the internet, the need for several cryptographical functions arose.
Due to its intended original use as a trusted research network (ARPANET),
almost none of the original protocols were 'secure' in any sense of the word.
Most notably still today is SMTP, the \textit{Simple Mail Transfer Protocol}, used to send email to servers.
In its original implementation, it allowed attackers to intercept emails in transit to read and modify them
and even spoof the sender address to impersonate others.
SMTP today is secured using a combination of mitigations for these attacks, such as STARTTLS, SPF, DKIM and DMARC,
emphasizing the need for securely designed protocols.
\section{DES}
The \acrfull{DES} 
\section{AES}
\section{RSA}
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