Latest update, add TLS 1.3 session time configuration.

doc/man3/RAND_DRBG_set_callbacks.pod

@@ -104,12 +104,9 @@ contents safely before freeing it, in order not to leave sensitive information
 about the DRBG's state in memory.
 
 A request for prediction resistance can only be satisfied by pulling fresh
-entropy from one of the approved entropy sources listed in section 5.5.2 of
-[NIST SP 800-90C].
-Since the default implementation of the get_entropy callback does not have access
-to such an approved entropy source, a request for prediction resistance will
-always fail.
-In other words, prediction resistance is currently not supported yet by the DRBG.
+entropy from a live entropy source (section 5.5.2 of [NIST SP 800-90C]).
+It is up to the user to ensure that a live entropy source is configured
+and is being used.
 
 The derivation function is disabled during initialization by calling the
 RAND_DRBG_set() function with the RAND_DRBG_FLAG_CTR_NO_DF flag.
@@ -124,20 +121,19 @@ In this case the DRBG will automatically request an extra amount of entropy
 utilize for the nonce, following the recommendations of [NIST SP 800-90A Rev. 1],
 section 8.6.7.
 
-
-=head1 HISTORY
-
-The RAND_DRBG functions were added in OpenSSL 1.1.1.
-
 =head1 SEE ALSO
 
 L<RAND_DRBG_new(3)>,
 L<RAND_DRBG_reseed(3)>,
 L<RAND_DRBG(7)>
 
+=head1 HISTORY
+
+The RAND_DRBG functions were added in OpenSSL 1.1.1.
+
 =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