Latest update.

doc/man3/HMAC.pod

@@ -20,6 +20,10 @@ HMAC_size
 
  #include <openssl/hmac.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 *HMAC(const EVP_MD *evp_md, const void *key,
                      int key_len, const unsigned char *d, int n,
                      unsigned char *md, unsigned int *md_len);
@@ -49,6 +53,10 @@ L<openssl_user_macros(7)>:
 
 =head1 DESCRIPTION
 
+All of the functions described on this page are deprecated. Applications should
+instead use L<EVP_MAC_CTX_new(3)>, L<EVP_MAC_CTX_free(3)>, L<EVP_MAC_init(3)>,
+L<EVP_MAC_update(3)> and L<EVP_MAC_final(3)>.
+
 HMAC is a MAC (message authentication code), i.e. a keyed hash
 function used for message authentication, which is based on a hash
 function.
@@ -138,6 +146,8 @@ L<SHA1(3)>, L<evp(7)>
 
 =head1 HISTORY
 
+All of these functions were deprecated in OpenSSL 3.0.
+
 HMAC_CTX_init() was replaced with HMAC_CTX_reset() in OpenSSL 1.1.0.
 
 HMAC_CTX_cleanup() existed in OpenSSL before version 1.1.0.