Improve BIO_socket_wait(), BIO_wait(), BIO_connect_retry(), and their docs

[openssl.git] / doc / man3 / MDC2_Init.pod

diff --git a/doc/man3/MDC2_Init.pod b/doc/man3/MDC2_Init.pod
index f7db71b460d3eeaa3be5100d361c137a1b02bdfd..abcf14445ece1122db04a383179630dacdcbcde5 100644 (file)
--- a/doc/man3/MDC2_Init.pod
+++ b/doc/man3/MDC2_Init.pod
@@ -8,16 +8,24 @@ MDC2, MDC2_Init, MDC2_Update, MDC2_Final - MDC2 hash function
 
  #include <openssl/mdc2.h>
 
+Deprecated since OpenSSL 3.0, can be hidden entirely by defining
+B<OPENSSL_API_COMPAT> with a suitable version value, see
+L<openssl_user_macros(7)>:
+
  unsigned char *MDC2(const unsigned char *d, unsigned long n,
-                  unsigned char *md);
+                     unsigned char *md);
 
  int MDC2_Init(MDC2_CTX *c);
  int MDC2_Update(MDC2_CTX *c, const unsigned char *data,
-                  unsigned long len);
+                 unsigned long len);
  int MDC2_Final(unsigned char *md, MDC2_CTX *c);
 
 =head1 DESCRIPTION
 
+All of the functions described on this page are deprecated.
+Applications should instead use L<EVP_DigestInit_ex(3)>, L<EVP_DigestUpdate(3)>
+and L<EVP_DigestFinal_ex(3)>.
+
 MDC2 is a method to construct hash functions with 128 bit output from
 block ciphers.  These functions are an implementation of MDC2 with
 DES.
@@ -50,17 +58,21 @@ MDC2_Init(), MDC2_Update() and MDC2_Final() return 1 for success, 0 otherwise.
 
 =head1 CONFORMING TO
 
-ISO/IEC 10118-2, with DES
+ISO/IEC 10118-2:2000 Hash-Function 2, with DES as the underlying block cipher.
 
 =head1 SEE ALSO
 
 L<EVP_DigestInit(3)>
 
+=head1 HISTORY
+
+All of these functions were deprecated in OpenSSL 3.0.
+
 =head1 COPYRIGHT
 
-Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.
 
-Licensed under the OpenSSL license (the "License").  You may not use
+Licensed under the Apache License 2.0 (the "License").  You may not use
 this file except in compliance with the License.  You can obtain a copy
 in the file LICENSE in the source distribution or at
 L<https://www.openssl.org/source/license.html>.