> I've been experimenting with pgcrypto 0.3 (distributed with

> Postgres 7.1.0), and I think I've found a bug.
>
> I compiled Pgcrypto with OpenSSL, using gcc 2.95.4 and
> OpenSSL 0.9.6a (the latest Debian 'unstable' packages).

> web=> select encode(digest('blah', 'sha1'), 'base64');
> FATAL 1:  pg_encode: overflow, encode estimate too small
> pqReadData() -- backend closed the channel unexpectedly.
>         This probably means the backend terminated abnormally
>         before or while processing the request.
> The connection to the server was lost. Attempting reset: Succeeded.

> Is this a bug? Can it be fixed?

This is a bug alright.  And a silly one :)

Marko Kreen

Author: bmomjian

contrib/pgcrypto/encode.c

@@ -26,7 +26,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: encode.c,v 1.4 2001/03/22 03:59:10 momjian Exp $
+ * $Id: encode.c,v 1.5 2001/05/13 02:17:09 momjian Exp $
  */
 
 #include "postgres.h"
@@ -349,7 +349,7 @@ hex_dec_len(uint srclen)
 uint
 b64_enc_len(uint srclen)
 {
-	return srclen + (srclen / 3) + (srclen / (76 / 2));
+	return srclen + (srclen + 2 / 3) + (srclen / (76 / 2)) + 2;
 }
 
 uint