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Example code of flametrench/identity

Informations about the package identity

flametrench/identity

CI

Identity primitives for Flametrench: users, credentials (Argon2id-pinned password + passkey + OIDC), user-bound sessions with rotation on refresh, and v0.2 multi-factor authentication (ADR 0008, ADR 0010) — TOTP (RFC 6238), recovery codes, and WebAuthn assertion verification across ES256 / RS256 / EdDSA.

The PHP counterpart of @flametrench/identity. Same shapes, same lifecycle, same Argon2id parameter floor, same opaque-bearer-token-vs-session-id distinction.

Status: v0.2.0 (stable). PHP 8.3+, ext-sodium required (for token base64url encoding). Includes the production-ready PostgresIdentityStore alongside the in-memory reference store. Per ADR 0014 the User entity carries an optional display_name with a partial-update updateUser operation; per ADR 0015 listUsers provides cursor-paginated user enumeration with a credential-identifier substring filter; per ADR 0013 the Postgres adapter cooperates with adopter-side outer transactions via savepoints when nested.

Install

Quick start

Argon2id is pinned

Password credentials use PHP's native PASSWORD_ARGON2ID at the spec floor (m=19456, t=2, p=1). These match the OWASP Password Storage Cheat Sheet floor and are the same parameters used by @flametrench/identity. Implementations MUST NOT use bcrypt, scrypt, PBKDF2, or any other algorithm — the spec is opinionated on this point because inconsistency causes breaches.

Sessions: tokens vs. ids

The session id is an identifier (appears in logs, audit, admin). The bearer token is separate — 32 random bytes, base64url-encoded — and only the SHA-256 hash is persisted. The plaintext token is returned exactly once from createSession / refreshSession and never leaves the caller's control via this SDK. Same separation as the spec defines.

refreshSession rotates: new session id, new token, old session revoked. In-place refresh is not spec-conformant.

Credential type discrimination

PHP doesn't have discriminated unions, so credentials are three concrete classes implementing the Credential interface:

Sensitive material (password hash, passkey public key bytes) is stored internally and never exposed on the public Credential shape — verification uses verifyPassword() and never returns hash material to callers.

Errors

Class Code
NotFoundException not_found
DuplicateCredentialException conflict.duplicate_credential
InvalidCredentialException unauthorized.invalid_credential
CredentialNotActiveException conflict.credential_not_active
CredentialTypeMismatchException conflict.credential_type_mismatch
SessionExpiredException unauthorized.session_expired
InvalidTokenException unauthorized.invalid_token
AlreadyTerminalException conflict.already_terminal
PreconditionException precondition.<specifics>

Cascade semantics (spec-required)

All cascades are atomic in the in-memory store; tests have explicit fixtures for each.

Development

License

Apache License 2.0. Copyright 2026 NDC Digital, LLC.

All versions of identity with dependencies

PHP Build Version
Package Version
Requires php Version ^8.3
ext-sodium Version *
flametrench/ids Version ^0.3.0
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