2 files changed, 46 insertions, 1 deletions

diff --git a/src/lib/libssl/man/Makefile b/src/lib/libssl/man/Makefile
index 1dbe53751f..c524a22493 100644
--- a/src/lib/libssl/man/Makefile
+++ b/src/lib/libssl/man/Makefile
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.73 2021/09/14 14:30:57 schwarze Exp $
+# $OpenBSD: Makefile,v 1.74 2021/10/23 11:41:52 beck Exp $
 
 .include <bsd.own.mk>
 
@@ -32,6 +32,7 @@ MAN =	BIO_f_ssl.3 \
         SSL_CTX_set_default_passwd_cb.3 \
         SSL_CTX_set_generate_session_id.3 \
         SSL_CTX_set_info_callback.3 \
+        SSL_CTX_set_keylog_callback.3 \
         SSL_CTX_set_max_cert_list.3 \
         SSL_CTX_set_min_proto_version.3 \
         SSL_CTX_set_mode.3 \
diff --git a/src/lib/libssl/man/SSL_CTX_set_keylog_callback.3 b/src/lib/libssl/man/SSL_CTX_set_keylog_callback.3
new file mode 100644
index 0000000000..023643d8ee
--- /dev/null
+++ b/src/lib/libssl/man/SSL_CTX_set_keylog_callback.3
@@ -0,0 +1,44 @@
+.\" $OpenBSD: SSL_CTX_set_keylog_callback.3,v 1.1 2021/10/23 11:41:52 beck Exp $
+.\" Copyright (c) 2021, Bob Beck <beck@openbsd.org>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.Dd $Mdocdate: October 23 2021 $
+.Dt SSL_CTX_SET_KEYLOG_CALLBACK 3
+.Os
+.Sh NAME
+.Nm SSL_CTX_set_keylog_callback ,
+.Nm SSL_CTX_get_keylog_callback
+.Nd set and get the unused key logging callback
+.Sh SYNOPSIS
+.In openssl/ssl.h
+.Bd -literal
+typedef void (*SSL_CTX_keylog_cb_func)(const SSL *ssl, const char *line)
+.Ed
+.Ft void
+.Fn SSL_CTX_set_keylog_callback "SSL_CTX *ctx" "SSL_CTX_keylog_cb_func cb"
+.Ft SSL_CTX_keylog_cb_func
+.Fn SSL_CTX_get_keylog_callback "const SSL_CTX *ctx"
+.Sh DESCRIPTION
+.Fn SSL_CTX_set_keylog_callback
+sets the TLS key logging callback.
+This callback is never called in LibreSSL.
+.Pp
+.Fn SSL_CTX_set_keylog_callback
+retrieves the previously set TLS key logging callback.
+.Pp
+These functions are provided only for compatibility with OpenSSL.
+.Sh RETURN VALUES
+.Fn SSL_CTX_get_keylog_callback
+returns the previously set TLS key logging callback, or NULL
+if no callback has been set.