Document that HMAC() with a NULL md is not thread safe
authorMatt Caswell <matt@openssl.org>
Thu, 25 May 2017 14:18:22 +0000 (15:18 +0100)
committerMatt Caswell <matt@openssl.org>
Thu, 25 May 2017 14:35:45 +0000 (15:35 +0100)
commite6ec6773c4ad10d6b4f260b3a2086547f2153ef1
tree99368c9cb29eb9c29caba1c96363b3b13b251929
parentb9ff4ec746daafe520e36c1489a2f843401ab140
Document that HMAC() with a NULL md is not thread safe

Fixes #3541

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3554)
doc/crypto/HMAC.pod