document the return value of EVP_PKEY_asn1_find(3) and

the "len" argument and the return value of EVP_PKEY_asn1_find_str(3)

diff --git a/lib/libcrypto/man/EVP_PKEY_asn1_get_count.3 b/lib/libcrypto/man/EVP_PKEY_asn1_get_count.3
index c14420b..d5bc0ea 100644 (file)
--- a/lib/libcrypto/man/EVP_PKEY_asn1_get_count.3
+++ b/lib/libcrypto/man/EVP_PKEY_asn1_get_count.3
@@ -1,10 +1,10 @@
-.\" $OpenBSD: EVP_PKEY_asn1_get_count.3,v 1.5 2020/06/24 19:55:54 schwarze Exp $
+.\" $OpenBSD: EVP_PKEY_asn1_get_count.3,v 1.6 2023/08/27 13:23:12 schwarze Exp $
 .\" full merge up to: OpenSSL 72a7a702 Feb 26 14:05:09 2019 +0000
 .\"
 .\" This file is a derived work.
 .\" The changes are covered by the following Copyright and license:
 .\"
-.\" Copyright (c) 2020 Ingo Schwarze <schwarze@openbsd.org>
+.\" Copyright (c) 2020, 2023 Ingo Schwarze <schwarze@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
@@ -65,7 +65,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 .\" OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: June 24 2020 $
+.Dd $Mdocdate: August 27 2023 $
 .Dt EVP_PKEY_ASN1_GET_COUNT 3
 .Os
 .Sh NAME
@@ -141,8 +141,17 @@ If one is found,
 is set to that engine and the method from that engine is returned instead.
 .Pp
 .Fn EVP_PKEY_asn1_find_str
-looks up the method with PEM type string
+looks up the method with the PEM type string given by the first
+.Fa len
+bytes of
 .Fa str .
+If
+.Fa len
+is \-1, the
+.Xr strlen 3
+of
+.Fa str
+is used instead.
 The PEM type strings supported by default are listed in the
 .Xr EVP_PKEY_base_id 3
 manual page.
@@ -190,6 +199,13 @@ is out of range.
 returns the public key method used by
 .Fa pkey .
 .Pp
+.Fn EVP_PKEY_asn1_find
+and
+.Fn EVP_PKEY_asn1_find_str
+return a matching public key method or
+.Dv NULL
+if no match is found.
+.Pp
 .Fn EVP_PKEY_asn1_get0_info
 returns 1 on success or 0 on failure.
 .Sh SEE ALSO