tree b6ddbb3bd95d39c1bd8c5f635f06d4b5b9bda96d
parent 2aa609cf4a9d7d1126360de73b55b6002f9e052a
author Ian Lance Taylor <iant@golang.org> 1559914139 -0700
committer Ian Lance Taylor <iant@golang.org> 1583182909 +0000

openpgp/packet: ensure that first partial packet is 512 bytes

This requirement is from RFC 4880 4.2.2.4.

Also simplify the partialLengthWriter loop. The old code worked but
was written in a confusing way, with a loop whose terminating condition
didn't make sense and was never true in practice.
Rewrite it to more clearly do a set of partial writes of decreasing size.

Fixes golang/go#32474

Change-Id: Ia53ceb39a34f1d6f2ea7c60190d52948bb0db59b
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/181121
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>