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\subsection{library(xmlenc): XML encryption library}

\label{sec:xmlenc}

\begin{tags}
\mtag{See also}- \url{https://www.w3.org/TR/xmlenc-core1/} \\- \url{https://en.wikipedia.org/wiki/Security_Assertion_Markup_Language}
\end{tags}

This library is a partial implementation of the XML encryption standard.
It implements the \textit{decryption} part, which is needed by SAML clients.\vspace{0.7cm}

\begin{description}
    \predicate[det]{decrypt_xml}{4}{+DOMIn, -DOMOut, :KeyCallback, +Options}

\begin{arguments}
\arg{KeyCallback} & may be called as follows:

\begin{shortlist}
    \item \verb$call(KeyCallback, name, KeyName, Key)$
    \item \verb$call(KeyCallback, public_key, public_key(RSA), Key)$
    \item \verb$call(KeyCallback, certificate, Certificate, Key)$
\end{shortlist}

 \\
\end{arguments}

    \predicate[det]{load_certificate_from_base64_string}{2}{+String, -Certificate}
Loads a certificate from a string, adding newlines and header
where appropriate so that OpenSSL 1.0.1+ will be able to parse it
\end{description}