openpgp/clearsign: Handle truncated messages
When parsing a truncated clearsigned message (one that includes the
opening header but no armored data), the existing implementation of
clearsign.Decode() hangs in an infinite loop. This commit changes
Decode() to detect the end of the buffer and return as if no
clearsigned message was found.
Change-Id: Ibc85b29a08d22868470f48fe300bf8fcb4749768
Reviewed-on: https://go-review.googlesource.com/17693
Reviewed-by: Adam Langley <agl@golang.org>
2 files changed
