Backport TLS padding extension from master.

1 files changed, 19 insertions, 0 deletions

diff --git a/CHANGES b/CHANGES
index b113221647..a3059d1b91 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4,6 +4,25 @@
 
  Changes between 1.0.1e and 1.0.2 [xx XXX xxxx]
 
+  *) TLS pad extension: draft-agl-tls-padding-02
+
+     Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
+     TLS client Hello record length value would otherwise be > 255 and
+     less that 512 pad with a dummy extension containing zeroes so it
+     is at least 512 bytes long.
+
+     To enable it use an unused extension number (for example chrome uses
+     35655) using:
+
+     e.g. -DTLSEXT_TYPE_padding=35655
+
+     Since the extension is ignored the actual number doesn't matter as long
+     as it doesn't clash with any existing extension.
+
+     This will be updated when the extension gets an official number.
+
+     [Adam Langley, Steve Henson]
+
   *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
      MGF1 digest and OAEP label.
      [Steve Henson]