Performance and Scalability in Cryptography Questions

Candidates should be able to reason about performance and scalability trade offs of cryptographic choices in real systems and quantify their impact. Topics include algorithmic complexity and constant factors, latency and throughput trade offs, differences in cost between symmetric and asymmetric operations, the impact of key sizes and parameter choices, memory and battery constraints on client devices, batching and parallelization strategies, and options for hardware acceleration or offload. Practical skills include benchmarking and profiling cryptographic hotspots, choosing modes that balance speed and security, and designing systems that meet service level objectives while preserving required cryptographic guarantees.