Authentication and Integrity Questions

Covers design and integration of authentication and identity management within systems as well as cryptographic techniques that ensure message and data integrity and authenticity. Topics include password based authentication with secure hashing and rate limiting, multi factor authentication integration, account and lifecycle management, and approaches to binding identity to cryptographic keys. Also covers public key infrastructure and certificate lifecycle management, secure key management and key compromise handling, digital signatures and message authentication codes for protocol level authenticity, designing authentication into communication protocols, replay protection, and practical trade offs when combining identity management with cryptographic integrity assurances.