Document the new APIs
diff --git a/doc/pyOpenSSL.tex b/doc/pyOpenSSL.tex
index a41b575..7b9bdbb 100644
--- a/doc/pyOpenSSL.tex
+++ b/doc/pyOpenSSL.tex
@@ -285,6 +285,24 @@
See also the man page for the C function \function{PKCS12_parse}.
\end{funcdesc}
+\begin{funcdesc}{sign}{key, data, digest}
+Sign a data string using the given key and message digest.
+
+\var{key} is a \code{PKey} instance. \var{data} is a \code{str} instance.
+\var{digest} is a \code{str} naming a supported message digest type, for example
+\code{``sha1''}.
+\end{funcdesc}
+
+\begin{funcdesc}{verify}{certificate, signature, data, digest}
+Verify the signature for a data string.
+
+\var{certificate} is a \code{X509} instance corresponding to the private key
+which generated the signature. \var{signature} is a \var{str} instance giving
+the signature itself. \var{data} is a \var{str} instance giving the data to
+which the signature applies. \var{digest| is a \var{str} instance naming the
+message digest type of the signature, for example \code{``sha1''}.
+\end{funcdesc}
+
\subsubsection{X509 objects \label{openssl-x509}}
X509 objects have the following methods: