Takes care of security.
In the long run this class should manage all security aspects of H2O but currently some parts are handled
in other parts of the codebase.
An instance of this class should be instantiated for each H2O object
and should follow its lifecycle.
At this stage we support a simple shared secret, handshake based, authentication, which can be turned
on with the h2o_ssl_enabled parameter. Should the communicating nodes not share a common shared secret
communication between them will not be possible.
Current state of data encryption:
- HTTP for FlowUI - currently we rely on Jetty's SSL capabilities, authentication can be performed with
hash login, ldap login or kerberos. The location of secret keys used byt Jetty's SSL server should be
passed to the jks parameter.
- inter node communication - all TCP based communication is being authenticated and encrypted using SSL
using JSSE (Java Secure Socket Extension) when then h2o_ssl_enabled parameter is passed. Keystore related
parameter should also be used as per the documentation.
- in-memory data encryption - currently not supported, using an encrypted drive is recommended
at least for the swap partition.
- data saved to disk - currently not supported, using an encrypted drive is recommended