Latest update.

doc/man3/RC4_set_key.pod

@@ -8,6 +8,10 @@ RC4_set_key, RC4 - RC4 encryption
 
  #include <openssl/rc4.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)>:
+
  void RC4_set_key(RC4_KEY *key, int len, const unsigned char *data);
 
  void RC4(RC4_KEY *key, unsigned long len, const unsigned char *indata,
@@ -15,6 +19,10 @@ RC4_set_key, RC4 - RC4 encryption
 
 =head1 DESCRIPTION
 
+All of the functions described on this page are deprecated. Applications should
+instead use L<EVP_EncryptInit_ex(3)>, L<EVP_EncryptUpdate(3)> and
+L<EVP_EncryptFinal_ex(3)> or the equivalently named decrypt functions.
+
 This library implements the Alleged RC4 cipher, which is described for
 example in I<Applied Cryptography>.  It is believed to be compatible
 with RC4[TM], a proprietary cipher of RSA Security Inc.
@@ -54,6 +62,10 @@ multiple encryptions using the same key stream.
 
 L<EVP_EncryptInit(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.