tree 933c66f93325ba1b34da7031bfca6c4d818f5c32
parent 429a25b97dd83b55a821629cd6e3ef1f80eb7a8a
author Rich Salz <rsalz@openssl.org> 1410191314 -0400
committer Rich Salz <rsalz@openssl.org> 1412347140 -0400

RT3462: Document actions when data==NULL

If data is NULL, return the size needed to hold the
derived key.  No other API to do this, so document
the behavior.

Reviewed-by: Richard Levitte <levitte@openssl.org>