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LithosAnanake/include/starkernel/capsule_mint.h
T
Robert Allan JamesandClaude Sonnet 5 6fd87923a5 MINT: parameterize with full name, username, email, phone
Extends user_identity_seed_t (version 2) with fixed-size full_name/
username/email/phone fields -- plenty of unused pad space (4016 bytes)
was already there. Deliberately NOT encoded into the DER cert's Subject
field: that would mean building a real X.509 RDNSequence (OIDs for
commonName/emailAddress, PrintableString/UTF8String tagging), well past
this project's own stated "deliberately not a general ASN.1/X.509
[builder]" scope. This human-readable profile data isn't
security-relevant the way pubkey/serial are (the only two fields
CERTVERIFY/BINDSTEP actually check) -- it travels alongside the keypair
in the plain identity record instead.

capsule_mint_identity() takes full_name/username (required, validated
non-empty and within their fixed field widths) and email/phone (NULL or
empty = null, matching the schema's own nullable convention). The MINT
FORTH word's stack signature grows to 4 string pairs
( fname-c fname-u uname-c uname-u email-c email-u phone-c phone-u -- ok? ).

Verified live in QEMU: minted two real identities with real profile
data -- Zuse (full_name "Konrad Suse", username "Zuse",
zuse@pantheon.org) onto disk/zuse.img, and a regular user (full_name
"Captain Bob", username "CaptBob", capt.bob@pantheon.org) onto
disk/user1.img -- then read the raw devblock bytes back off both images
directly and confirmed every field byte-exact at its correct struct
offset. Clean 3-architecture regression boot confirms no side effects.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019ZGkimpfyh63EZyRkNbkPD
2026-08-28 15:33:02 -04:00

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/*
StarForth — Steady-State Virtual Machine Runtime
Copyright (c) 20232025 Robert A. James
All rights reserved.
Licensed under the StarForth License, Version 1.0
*/
/**
* capsule_mint.h - MINT: mint a fresh identity onto a blank thumbdrive
* (FABRIC-3.md §F.8/§F.19), the last piece of the original Tripod
* vision. Writes a real keypair, a Zuse-signed cert, and a minimal
* working default personality -- everything RUNCAP (capsule_runcap.h)
* and CERTVERIFY need at a later attach.
*/
#ifndef STARKERNEL_CAPSULE_MINT_H
#define STARKERNEL_CAPSULE_MINT_H
#ifdef __STARKERNEL__
#include <stdint.h>
#include "vm.h"
struct blkio_dev;
typedef enum {
MINT_OK = 0,
MINT_ERR_ALREADY_MINTED, /* dev already reads as a recognized home-blocks
* drive -- refuses rather than overwrite,
* mirroring WRITE(10)'s own blank-media
* posture (§F.8, decided 2026-08-28). */
MINT_ERR_NO_ZUSE_CERT, /* issuer_vm->zuse_cert_installed is 0 -- no
* key to sign the new cert with. */
MINT_ERR_NO_ENTROPY, /* virtio_rng not ready. */
MINT_ERR_CERT_BUILD, /* x509_build_user_cert() failed (shouldn't
* happen with fixed-size fields, but not
* assumed away). */
MINT_ERR_WRITE_FAIL, /* a devblock write failed partway through --
* the drive may be left partially minted. */
MINT_ERR_INVALID_PROFILE, /* full_name/username missing or too long for
* user_identity_seed_t's fixed fields, or
* email/phone too long (both may be NULL/empty
* -- that's "null", not invalid). */
} MintResult;
/**
* capsule_mint_identity - Mint a fresh identity onto dev.
*
* Layout written (devblock offsets from dev's own start; devblock 0 is
* left alone, reserved for the block-subsystem's own generic header):
* devblock 1 homeblocks_sig_t (HOMEBLOCKS_SIG_START_FBLOCK)
* devblock 2 DER cert, Zuse-signed (cert_offset)
* devblock 3 user_identity_seed_t (identity_src_offset)
* devblock 4 default personality source (identity_src_offset+1)
*
* @param dev Already-open block device for the target drive.
* @param issuer_vm The signing identity -- in practice always Hera's own
* VM (Zuse's cert lives there, vm.h's zuse_cert_seed).
* @param full_name Required, NUL-terminated, fits user_identity_seed_t's
* full_name field (§F.20).
* @param username Required, NUL-terminated, fits its username field.
* @param email NULL or empty string = null (field stays empty).
* @param phone NULL or empty string = null (field stays empty).
* @return MINT_OK on success, an error code otherwise.
*/
MintResult capsule_mint_identity(struct blkio_dev *dev, VM *issuer_vm,
const char *full_name, const char *username,
const char *email, const char *phone);
#endif /* __STARKERNEL__ */
#endif /* STARKERNEL_CAPSULE_MINT_H */