Add support for Poly1305 in EVP_PKEY

[oweals/openssl.git] / doc / man3 / EVP_PKEY_CTX_ctrl.pod

diff --git a/doc/man3/EVP_PKEY_CTX_ctrl.pod b/doc/man3/EVP_PKEY_CTX_ctrl.pod
index 0732a05779693f999544e72f1124ae799e3f09dc..abe76c80892d83dd008efd235686725aa7591914 100644 (file)
--- a/doc/man3/EVP_PKEY_CTX_ctrl.pod
+++ b/doc/man3/EVP_PKEY_CTX_ctrl.pod
@@ -48,6 +48,9 @@ B<optype> is a mask indicating which operations the control can be applied to.
 The control command is indicated in B<cmd> and any additional arguments in
 B<p1> and B<p2>.
 
+For B<cmd> = B<EVP_PKEY_CTRL_SET_MAC_KEY>, B<p1> is the length of the MAC key,
+and B<p2> is MAC key. This is used by Poly1305, HMAC and CMAC.
+
 Applications will not normally call EVP_PKEY_CTX_ctrl() directly but will
 instead call one of the algorithm specific macros below.