What is the fine-grained topic of the following text: We thereby want to specifically put our focus on two highly important issues for the future: (1) designing security models and cryptographic schemes that are surveillance and subversion resilient by design, e.g., provide strong notions such as forward security and post-compromise security, and (2) designing cryptographic schemes that remain secure in the presence of powerful quantum computers, i.e., schemes that provide post-quantum security. Only return the topic.
Designing resilient cryptographic schemes and security models for future threats including surveillance, subversion, and quantum computers.