Secure File Center
A secure file-management module for large uploads, validation, malware inspection, object storage, and controlled downloads.
Read case studyRepresentative authentication workflow
Passkey & TOTP Account Security
A security-focused account upgrade combining passkey registration and sign-in with authenticator-app TOTP, recovery boundaries, and existing PHP session rules.
RoleAuthentication and account-security developer
Product typeRepresentative authentication workflow
FocusPHP · Authentication · Security
01 · The problem
Business and technical context
An established PHP account system needed stronger sign-in options without breaking current sessions, password access, user recovery, or the permission rules already attached to each account.
02 · The solution
Implementation approach
I mapped the existing login and session lifecycle, added server-verified WebAuthn registration and authentication ceremonies, introduced time-based one-time-password enrollment with QR setup, and defined recovery and step-up behavior around the product’s current account model.
03 · Key functionality
What I delivered
01
Origin- and relying-party-aware WebAuthn registration flow.
02
Passkey authentication connected to existing PHP accounts and sessions.
03
Authenticator-app QR enrollment with server-side TOTP verification.
04
Replay, expiry, session-regeneration, and account-state checks.
05
Recovery and fallback boundaries documented for product review.
04 · Constraints
Important challenges
Adding stronger authentication without creating a second account identity model.
Keeping browser ceremonies, server challenges, and session state synchronized.
Designing recovery behavior that does not undermine the new factors.
05 · System view
High-level architecture
1
Browser WebAuthn or authenticator app
2
PHP challenge and factor verification
3
MySQL credential state
4
Existing account session and permissions
06 · Interactive system motion
Explore how the layers influence one another.
This abstract simulation turns the architecture above into a small spring-and-collision system. Move or press inside the canvas to disturb it. It is a systems visualization, not customer footage or a product screenshot.
07 · Result
Operational improvement
Accounts could use the agreed passkey and TOTP paths within the existing login system.
Server-side challenge, factor, and session checks remained authoritative.
Fallback and recovery decisions were made explicit for maintainers and support staff.
Related work
More projects with overlapping technologies and delivery challenges.
Social Platform Modernization
A multi-phase modernization of an established PHP social platform covering authentication, communications, media, onboarding, PWA behavior, and custom administrative controls.
Read case study
Role-Aware Operations Dashboard
A protected PHP operations surface for reviewing records, managing workflow states, inspecting audit context, and performing bounded content or support actions.
Read case studyNext case study
Explore more production-focused work.
Browse projects across marketplace systems, secure storage, SaaS payments, mobile backends, and external APIs.