As per NLnetLabs/cascade#332, we've noticed that (de)serialization is surprisingly expensive. The problem here is kmip-ttlv's Serde implementation -- it performs a lot of backtracking and string parsing while consuming requests. Rather than completely overhauling that library, it may be preferable to replace it with a local module.

• Add simple benchmarks to measure the difference
• Implement a manual fast-path deserializer
• Implement a manual serializer
• Implement a manual slow-path deserializer
• Implement (randomized) tests