Add a base64 encoder and decoder

1 files changed, 15 insertions, 0 deletions

diff --git a/doc/webid-oidc.texi b/doc/webid-oidc.texi
index 81d408a..d63fc09 100644
--- a/doc/webid-oidc.texi
+++ b/doc/webid-oidc.texi
@@ -121,6 +121,21 @@ Return a string explaining the @var{error}. You can limit the
 @var{depth} of the explanation as an integer.
 @end deffn
 
+@menu
+* Invalid data format::
+@end menu
+
+@node Invalid data format
+@section Invalid data format
+There are a few JSON objects with required fields. This exceptions
+usually occur as the cause of a higher-level exception.
+
+@deftp {exception type} &not-base64 @var{value} @var{cause}
+This exception is raised when the base64 decoding function
+failed. @var{value} is the incorrect input, and @var{cause} is a
+low-level error.
+@end deftp
+
 @node GNU Free Documentation License
 @appendix GNU Free Documentation License