flavien-ia/hypervibe-craft/hash-password

Hash Password - Internal helper

Communication

• Detect the user's language from the conversation (the user's own messages, anywhere in the session - not just this invocation: a bare slash command like /bootstrap carries no language signal by itself). If nothing in the conversation gives a signal, fall back to the OS locale (node -e "console.log(Intl.DateTimeFormat().resolvedOptions().locale)") before defaulting to English. ALWAYS reply in that language for every user-facing message: questions, progress, confirmations, summaries, errors - including any example text quoted in this skill, which is illustrative and must be translated, never sent verbatim.
• Use plain, non-technical business language. Never expose internal script names (*.mjs) or jargon; describe actions in human terms.
• When generating user-facing content for the scaffolded project (UI labels, emails, copy), write it in the user's language too.
• Show progress as a short natural-language checklist (in-progress and done states).

Hash a password with scrypt. Delegates to a bundled Node script - never reimplement inline.

Why scrypt, not bcrypt

bcrypt hashes contain $ (e.g. $2b$10$...). $ is interpreted by shells and mangled by vercel env add, causing silent corruption. scrypt hashes are plain salt:hash hex strings, fully shell-safe and env-var-safe.

If you see bcrypt hashes anywhere in the project ($2a$, $2b$, $2y$ prefixes), refuse and tell the user to rehash in scrypt first.

Invocation

Hash a provided password (password supplied via stdin - never via argv)

HASH=$(printf '%s' "Admin1234!" | node "${CLAUDE_SKILL_DIR}/../../scripts/hash-password.mjs")

Returns a single line on stdout: salt:hash (both hex), no trailing newline. Capture it directly in a shell variable.

A random password for the user (the admin's, in production)

Never generate it where you read it: a password shown in the conversation stays in its history. Use the script that writes it for the user alone:

node "${CLAUDE_SKILL_DIR}/../../scripts/admin-password.mjs" rotate --project-dir "<app folder>"

It generates the password, writes it with the identifier and the sign-in page in a file of the user's downloads folder, and pushes only its hash (ADMIN_PASSWORD_HASH_PROD). Its JSON gives the file's path (file): give the user that path, never the password, and never read the file. The new password works once the site is deployed again.

hash-password.mjs --generate (which prints password= and hash= on its output) stays for scripts that capture it internally: never run it in a command whose output you read.

Defaults

• --length 24 for --generate (24 chars = ~143 bits of entropy, still typeable)
• --format alphanumeric for --generate (no special chars, comfortable in a terminal)

Rules

• Always use this helper (never inline scryptSync or bcrypt).
• Never write the plain password in the project, and never display a password in the conversation. The only file that holds one is the file admin-password.mjs writes in the user's downloads folder, for them alone.
• Never log hashes or passwords to stdout. A hash goes to _push-env-vars through a shell variable or a pipe.
• The scrypt parameters are salt=16 bytes, keylen=64 bytes. Verification in the project uses the same params (in src/lib/password.ts created by add-auth), with timingSafeEqual to prevent timing attacks.