Robert Allan JamesandClaude Sonnet 5
f6e2737f1e
capsule_mint_identity() (new capsule_mint.h/.c): mints a fresh identity onto a blank/unminted thumbdrive -- real Ed25519 keypair from virtio_rng, a fresh drive_uuid (independent random draw, not derived from the identity seed, per FABRIC-3.md §F.8 decision 3), a Zuse-signed DER cert in the CERTVERIFY format, and a small working default personality (a real WELCOME word, not a stub -- FABRIC-3.md §F.6/§F.8's own "default personality content" question stays open, but whatever mints today must actually do something when RUNCAP births it). Refuses to overwrite a drive that already reads as a recognized home-blocks drive, mirroring WRITE(10)'s own refuse-on-non-blank posture (decided now, not just "reasonable by analogy" as §F.8 left it). x509_build_user_cert() (x509_ed25519.h/.c): the encode-side counterpart to the existing decode functions (x509_extract_ed25519_pubkey(), x509_verify_signature(), x509_extract_serial()) -- a minimal DER TLV writer producing exactly the fields those functions read. Host-tested round-trip against the real decoder before trusting it in the kernel, including a high-bit-serial case that exercises the DER integer-padding rule; all assertions pass (pubkey/serial round-trip, signature verifies against the real issuer, correctly rejects the wrong key and a corrupted signature). New user_identity_seed_t (user_identity_seed.h): the on-disk record for a minted identity's own keypair, same magic+version+fields+pad-to-4096+ real-CRC convention as zuse_cert_devblock_t and homeblocks_sig_t. Fixed devblock layout: sig(1), cert(2), seed record(3), default personality(4). New MINT word (mama_forth_words.c) and a small accessor (sk_repl_get_attached_blk_dev(), repl.h/.c) exposing the currently attached USB device regardless of home-blocks recognition -- MINT's own target is a blank drive, which by definition never sets Phase D's sk_repl_get_homeblocks_dev(). Verified end-to-end live in QEMU: MINT on a genuinely blank test drive, then (after a detach/reattach so the sig cache picks up the fresh header -- a known workflow gap, not fixed here, flagged for whoever builds the real Console onboarding flow) RUNCAP birthed a VM from that drive's own newly-minted content, and VM-EXECing its WELCOME word printed the default personality banner. The full mint-to-birth Tripod identity flow works end to end for the first time. Clean 3-architecture regression boot confirms no side effects on normal boot. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019ZGkimpfyh63EZyRkNbkPD
50 lines
2.3 KiB
C
50 lines
2.3 KiB
C
/*
|
|
* user_identity_seed.h -- on-disk record format for a minted user
|
|
* identity's own keypair (FABRIC-3.md §F.8, decision 2), stored in the
|
|
* first devblock of a home-blocks drive's identity_src region
|
|
* (homeblocks_sig_t.identity_src_offset). The devblocks that follow it
|
|
* (identity_src_offset+1 .. identity_src_offset+identity_src_devblocks-1)
|
|
* hold this identity's own raw FORTH personality/init source, read by
|
|
* RUNCAP (capsule_runcap.h) at birth.
|
|
*
|
|
* Same raw-devblock, magic+version+fields+pad-to-4096, real-CRC-from-
|
|
* day-one convention as zuse_cert_devblock_t (zuse_cert_devblock.h) and
|
|
* homeblocks_sig_t -- a new, dedicated type rather than reusing
|
|
* zuse_cert_devblock_t, per this project's "give real-shaped data its
|
|
* own header" convention (Zuse's own record has no analogous public
|
|
* cert field; a regular user's does, stored separately in the cert
|
|
* region MINT also writes -- see homeblocks_sig_t.cert_offset).
|
|
*/
|
|
#ifndef STARKERNEL_USER_IDENTITY_SEED_H
|
|
#define STARKERNEL_USER_IDENTITY_SEED_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#define USER_IDENTITY_SEED_MAGIC \
|
|
((uint32_t)'U' | ((uint32_t)'I' << 8) | ((uint32_t)'D' << 16) | ((uint32_t)'S' << 24))
|
|
|
|
#define USER_IDENTITY_SEED_VERSION 1u
|
|
|
|
typedef struct {
|
|
uint32_t magic; /* USER_IDENTITY_SEED_MAGIC; anything else means
|
|
* "not yet minted" (blank/foreign bytes), not a
|
|
* format-corruption error. */
|
|
uint32_t version; /* USER_IDENTITY_SEED_VERSION */
|
|
uint8_t seed[32]; /* Ed25519 seed -- this identity's own private key.
|
|
* Regular users are thumbdrive-resident (unlike
|
|
* Zuse's system-resident one) -- this is the
|
|
* only copy. */
|
|
uint8_t pubkey[32]; /* Ed25519 public key derived from seed at mint
|
|
* time -- same value the cert region's
|
|
* SubjectPublicKeyInfo holds. */
|
|
uint64_t crc; /* CRC-64/ISO (block_subsystem.h's compute_crc64())
|
|
* over every byte of this struct up to (not
|
|
* including) this field. */
|
|
uint8_t _pad[4096 - (4 + 4 + 32 + 32 + 8)];
|
|
} user_identity_seed_t;
|
|
|
|
typedef char user_identity_seed_size_check[
|
|
(sizeof(user_identity_seed_t) == 4096) ? 1 : -1];
|
|
|
|
#endif /* STARKERNEL_USER_IDENTITY_SEED_H */
|