# Peios System Protocols Kernel (PSPK)

> The contracts spoken across the kernel boundary — the protocols a Peios kernel subsystem depends on a userspace process to fulfil, and the formats it exchanges with one.

The whole book as one markdown file: [/peios/advanced-peios/pspk/print.md](/peios/advanced-peios/pspk/print.md)

Contents:

- 1 [Introduction](/peios/advanced-peios/pspk/introduction/scope.md)
    - 1.1 [Scope](/peios/advanced-peios/pspk/introduction/scope.md)
    - 1.2 [Conventions](/peios/advanced-peios/pspk/introduction/conventions.md)
- 2 [KMES Event Stream](/peios/advanced-peios/pspk/kmes-event-stream/scope.md)
    - 2.1 [Scope and Roles](/peios/advanced-peios/pspk/kmes-event-stream/scope.md)
    - 2.2 [Event Format](/peios/advanced-peios/pspk/kmes-event-stream/event-format.md)
    - 2.3 [Attaching and Mapping](/peios/advanced-peios/pspk/kmes-event-stream/attaching.md)
    - 2.4 [Consumer Protocol](/peios/advanced-peios/pspk/kmes-event-stream/consuming.md)
- 3 [Binary Signing and PIP](/peios/advanced-peios/pspk/binary-signing-and-pip/scope.md)
    - 3.1 [Scope and Roles](/peios/advanced-peios/pspk/binary-signing-and-pip/scope.md)
    - 3.2 [Signature Format](/peios/advanced-peios/pspk/binary-signing-and-pip/signature-format.md)
    - 3.3 [The PIP Contract](/peios/advanced-peios/pspk/binary-signing-and-pip/process-integrity-protection.md)
- 4 [Registry Source Interface](/peios/advanced-peios/pspk/registry-source-interface/scope.md)
    - 4.1 [Scope and Roles](/peios/advanced-peios/pspk/registry-source-interface/scope.md)
    - 4.2 [The Channel](/peios/advanced-peios/pspk/registry-source-interface/the-channel.md)
    - 4.3 [Message Framing](/peios/advanced-peios/pspk/registry-source-interface/message-framing.md)
    - 4.4 [Operations](/peios/advanced-peios/pspk/registry-source-interface/operations.md)
    - 4.5 [Conformance](/peios/advanced-peios/pspk/registry-source-interface/conformance.md)
- 5 [Registry Backup Format](/peios/advanced-peios/pspk/registry-backup-format/scope.md)
    - 5.1 [Scope and Roles](/peios/advanced-peios/pspk/registry-backup-format/scope.md)
    - 5.2 [Stream Structure](/peios/advanced-peios/pspk/registry-backup-format/stream-structure.md)
    - 5.3 [Records](/peios/advanced-peios/pspk/registry-backup-format/records.md)
    - 5.4 [Restoring](/peios/advanced-peios/pspk/registry-backup-format/restoring.md)