Secure cloud identity and auth flows

Design secure multi-tenant cloud IAM and token systems

Building cloud platforms with federated identity, zero over-privilege, and auditability.

• · User principals, scopes, roles, resource ACLs, token requirements

• · Token design, policy engine spec, federation architecture, least-privilege roles

• · Distinguish authn/authz/audit cleanly
• · Understand OAuth 2.0 and OIDC
• · Know JWT pitfalls

• · JWT with alg:none
• · Algorithm confusion (RSA pubkey as HMAC secret)
• · Long-lived tokens without revocation
• · Storing sensitive data in JWT payload

• · Tibsfox, stable 2026-04-12
• · Covers Keystone, OAuth 2.0, OIDC, SAML, mTLS, SPIFFE
• · Service-catalog pattern + admin/internal/public endpoints