Part V — Applied cryptography at Koder

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The payoff: every Koder Stack engineering decision tied to the right primitive. From identity to transport, from data to keys, to the discipline that keeps it all correct and ready for the post-quantum future.

# Section What it covers
1 Identity and transport Koder ID (Ed25519, Argon2id, passkeys), TLS 1.3 in Jet (AEAD + hybrid PQC + ACME), post-Terrapin SSH.
2 Data and keys kzip (AEAD + recipient mode), key lifecycle (HSM, HKDF, rotation, Shamir), CSPRNG, multi-tenant.
3 Discipline and posture koder_kit (misuse-resistant API), self-hosted + multi-tenant, crypto-agility, the complete picture.

Previous part: IV — Post-quantum. This is the last part of the narrated arc.

For dense reference, see Part VIII — Reference.