https://github.com/openssl/openssl/commits/ and pick the appropriate
release branch.
- Changes between 1.0.2n and 1.0.2o [xx XXX xxxx]
+ Changes between 1.0.2o and 1.0.2p [xx XXX xxxx]
+
+ *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
+ now allow empty (zero character) pass phrases.
+ [Richard Levitte]
+
+ *) Certificate time validation (X509_cmp_time) enforces stricter
+ compliance with RFC 5280. Fractional seconds and timezone offsets
+ are no longer allowed.
+ [Emilia Käsper]
+
+ Changes between 1.0.2n and 1.0.2o [27 Mar 2018]
*) Constructed ASN.1 types with a recursive definition could exceed the stack