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Oleksandr Bezdieniezhnykh a77b3f8a59 [AZ-529] [AZ-530] Cycle-2 documentation refresh

Refreshes _docs/02_document/ to reflect the cycle-2 auth-modernization
+ CMMC hardening landings (AZ-531..AZ-538). Authoritative source for
the ripple set is ripple_log_cycle2.md.

Covered:
- architecture.md (section 1 rewritten, ADRs 6-9 added)
- data_model.md (sessions, audit_events, user columns, migrations)
- system-flows.md (F1 rewritten; F11-F17 added; F2/F7/F9 minor)
- module-layout.md (cycle-2 sub-component table)
- diagrams/flows/flow_login.md (dual-token + MFA)
- components/{01_data_layer,03_auth_and_security,05_admin_api}
- modules/ (12 new, 8 modified — full Argon2id/ES256/MFA/refresh
  /mission/session/audit/jwks rollup)
- tests/{blackbox,security,traceability-matrix}

Step 13 (Update Docs) output for cycle 2.

Co-authored-by: Cursor <cursoragent@cursor.com>

2026-05-14 09:22:53 +03:00

3.5 KiB

Raw Blame History

Module: Azaion.Common.Requests.MfaRequests

Purpose

Request and response DTOs for the MFA enrollment / login surface introduced in cycle 2 by AZ-534 (Epic AZ-529, TOTP-based 2FA at credential login). All DTOs live in a single MfaRequests.cs file.

Public Interface

MfaEnrollRequest

Property	Type	Description
`Password`	`string`	Re-auth required for enrollment (defends a stolen access token from silently flipping MFA on).

MfaEnrollResponse

Property	Type	Description
`Secret`	`string`	32-char base32 TOTP shared secret. Shown once.
`OtpAuthUrl`	`string`	Standard `otpauth://` URL the authenticator app consumes.
`QrPngBase64`	`string`	PNG encoding of `OtpAuthUrl` (base64). UI inlines as `data:image/png;base64,…`.
`RecoveryCodes`	`string[]`	10 single-use base32 codes (each ≥12 chars). Stored hashed in `users.mfa_recovery_codes`; the plaintext list is unrecoverable after this response.

MfaConfirmRequest

Property	Type	Description
`Code`	`string`	TOTP code that validates the enrolled secret. On success `users.mfa_enabled` flips to true.

MfaDisableRequest

Property	Type	Description
`Password`	`string`	Re-auth (same defence as enroll).
`Code`	`string`	A valid TOTP code (recovery codes are NOT accepted here — disable should be deliberate).

MfaRequiredResponse

Returned by POST /login when the user has MFA enabled instead of LoginResponse.

Property	Type	Description
`MfaRequired`	`bool`	Always `true`. Lets dual-shape clients branch on a single field.
`MfaToken`	`string`	Short-lived (5 min) ES256 JWT with audience `azaion-mfa-step2`. Carry to `/login/mfa`.
`ExpiresIn`	`int`	Step-1 token TTL in seconds (300).

MfaLoginRequest

Property	Type	Description
`MfaToken`	`string`	The step-1 token from `MfaRequiredResponse`.
`Code`	`string`	A valid TOTP code OR a single-use recovery code.

Internal Logic

None — pure data classes.

Dependencies

None.

Consumers

Program.cs /users/me/mfa/enroll — MfaEnrollRequest → MfaEnrollResponse.
Program.cs /users/me/mfa/confirm — MfaConfirmRequest.
Program.cs /users/me/mfa/disable — MfaDisableRequest.
Program.cs /login — returns MfaRequiredResponse when user.MfaEnabled.
Program.cs /login/mfa — MfaLoginRequest → LoginResponse.
MfaService — consumes every request type and produces the responses.

Data Models

None directly.

Configuration