Latest update, add TLS 1.3 session time configuration.

doc/man3/RAND_DRBG_reseed.pod

@@ -13,7 +13,8 @@ RAND_DRBG_set_reseed_defaults
  #include <openssl/rand_drbg.h>
 
  int RAND_DRBG_reseed(RAND_DRBG *drbg,
-                      const unsigned char *adin, size_t adinlen);
+                      const unsigned char *adin, size_t adinlen,
+                      int prediction_resistance);
 
  int RAND_DRBG_set_reseed_interval(RAND_DRBG *drbg,
                                    unsigned int interval);
@@ -37,6 +38,10 @@ and mixing in the specified additional data provided in the buffer B<adin>
 of length B<adinlen>.
 The additional data can be omitted by setting B<adin> to NULL and B<adinlen>
 to 0.
+An immediate reseeding can be requested by setting the
+B<prediction_resistance> flag to 1.
+Requesting prediction resistance is a relative expensive operation.
+See NOTES section for more details.
 
 RAND_DRBG_set_reseed_interval()
 sets the reseed interval of the B<drbg>, which is the maximum allowed number
@@ -88,10 +93,6 @@ To ensure that they are applied to the global and thread-local DRBG instances
 RAND_DRBG_set_reseed_defaults() before creating any thread and before calling any
  cryptographic routines that obtain random data directly or indirectly.
 
-=head1 HISTORY
-
-The RAND_DRBG functions were added in OpenSSL 1.1.1.
-
 =head1 SEE ALSO
 
 L<RAND_DRBG_generate(3)>,
@@ -99,9 +100,15 @@ L<RAND_DRBG_bytes(3)>,
 L<RAND_DRBG_set_callbacks(3)>.
 L<RAND_DRBG(7)>
 
+=head1 HISTORY
+
+The RAND_DRBG functions were added in OpenSSL 1.1.1.
+
+Prediction resistance is supported from OpenSSL 3.0.0.
+
 =head1 COPYRIGHT
 
-Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2017-2019 The OpenSSL Project Authors. All Rights Reserved.
 
 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