Added entry for the hmac module.
diff --git a/Doc/lib/lib.tex b/Doc/lib/lib.tex
index 2ec998a..31f1cf7 100644
--- a/Doc/lib/lib.tex
+++ b/Doc/lib/lib.tex
@@ -261,6 +261,7 @@
 \input{libsndhdr}
 
 \input{libcrypto}               % Cryptographic Services
+\input{libhmac}
 \input{libmd5}
 \input{libsha}
 \input{libmpz}