Verify passkey algorithms from COSE keys

CHANGELOG.md

@@ -2,6 +2,29 @@
 
 # Changelog
 
+## v0.1.0-preview.21 — 2026-09-04
+
+- Derive the registered credential algorithm from the verified COSE public key
+  embedded in authenticator data instead of the optional browser
+  `publicKeyAlgorithm` convenience member.
+- Preserve the ES256-only policy while accepting standards-compliant response
+  serializers that omit redundant response conveniences, including the
+  Bitwarden/Vaultwarden passkey flow exercised through Gamertan.
+- Add regression coverage for an ES256 credential whose convenience algorithm
+  is absent, plus malformed and non-ES256 credential rejection.
+
+## v0.1.0-preview.20 — 2026-09-04
+
+- Extend the direct-owner transaction boundary to invitations. Creating or
+  revoking an invitation that grants the configured owner role now requires
+  the actor to remain an active direct owner after the SQLite write lock is
+  acquired.
+- Preserve application-owned permission policy for ordinary invitations while
+  preventing a broad access-management role, stale ceremony, or alternate
+  repository call from creating or cancelling owner access.
+- Pass the configured owner role explicitly through invitation repository
+  mutations so non-SQLite adapters cannot silently omit the invariant.
+
 ## v0.1.0-preview.19 — 2026-09-04
 
 - Require a current active direct owner for every direct-role transition to or

README.md

@@ -17,7 +17,7 @@ router, handlers, HTML, authorization decisions, cache behavior, and
 deployment. Adopt one boundary at a time; Go compiles and links only the
 packages you import.
 
-> **Public preview:** `v0.1.0-preview.19`. APIs may change before a stable
+> **Public preview:** `v0.1.0-preview.21`. APIs may change before a stable
 > release. Linux is the maintained release platform.
 
 ## Why Web Foundations?
@@ -57,14 +57,14 @@ owns—and, just as importantly, what remains application policy.
 Pin the preview in an application module:
 
 ```bash
-go get gamertan.com/web@v0.1.0-preview.19
+go get gamertan.com/web@v0.1.0-preview.21
 go mod verify
 ```
 
 An application may name the first package it intends to adopt:
 
 ```bash
-go get gamertan.com/web/requestmeta@v0.1.0-preview.19
+go get gamertan.com/web/requestmeta@v0.1.0-preview.21
 ```
 
 The version belongs to the `gamertan.com/web` module. See the

authsqlite/organizations.go

@@ -123,8 +123,8 @@ func (store *Store) CreateApplicationService(ctx context.Context, application or
 	return nil
 }
 
-func (store *Store) CreateInvitation(ctx context.Context, invitation organizations.Invitation, audit organizations.AuditEvent) error {
-	if !opaqueID(invitation.ID) || zeroDigest(invitation.Digest) || !opaqueID(invitation.OrganizationID) || !text(invitation.Email, 320, false) || !opaqueID(invitation.InvitedByUserID) || invitation.DirectRole != "" && !safeName(invitation.DirectRole) || !validInvitationTeamIDs(invitation.TeamIDs) || invitation.CreatedAt.IsZero() || !invitation.ExpiresAt.After(invitation.CreatedAt) || !invitation.UsedAt.IsZero() || !invitation.RevokedAt.IsZero() || !validOrganizationAudit(audit, invitation.OrganizationID) {
+func (store *Store) CreateInvitation(ctx context.Context, invitation organizations.Invitation, ownerRole string, audit organizations.AuditEvent) error {
+	if !opaqueID(invitation.ID) || zeroDigest(invitation.Digest) || !opaqueID(invitation.OrganizationID) || !text(invitation.Email, 320, false) || !opaqueID(invitation.InvitedByUserID) || invitation.DirectRole != "" && !safeName(invitation.DirectRole) || ownerRole != "" && !safeName(ownerRole) || !validInvitationTeamIDs(invitation.TeamIDs) || invitation.CreatedAt.IsZero() || !invitation.ExpiresAt.After(invitation.CreatedAt) || !invitation.UsedAt.IsZero() || !invitation.RevokedAt.IsZero() || !validOrganizationAudit(audit, invitation.OrganizationID) {
 		return errors.New("authsqlite: invalid invitation")
 	}
 	teamIDs, err := json.Marshal(invitation.TeamIDs)
@@ -136,6 +136,18 @@ func (store *Store) CreateInvitation(ctx context.Context, invitation organizatio
 		return err
 	}
 	defer tx.Rollback()
+	if err = lockActiveMembershipActor(ctx, tx, invitation.OrganizationID, invitation.InvitedByUserID); err != nil {
+		return err
+	}
+	if ownerRole != "" && invitation.DirectRole == ownerRole {
+		actorIsOwner, ownerErr := hasDirectOwnerRole(ctx, tx, invitation.OrganizationID, invitation.InvitedByUserID, ownerRole)
+		if ownerErr != nil {
+			return ownerErr
+		}
+		if !actorIsOwner {
+			return organizations.ErrOwnerAuthority
+		}
+	}
 	if err = validateInvitationTeams(ctx, tx, invitation.OrganizationID, invitation.TeamIDs); err != nil {
 		return err
 	}
@@ -743,8 +755,8 @@ func validateInvitationTeams(ctx context.Context, tx *sql.Tx, organizationID str
 	return nil
 }
 
-func (store *Store) RevokeInvitation(ctx context.Context, organizationID, invitationID string, revokedAt time.Time, audit organizations.AuditEvent) error {
-	if !opaqueID(organizationID) || !opaqueID(invitationID) || revokedAt.IsZero() || !validOrganizationAudit(audit, organizationID) {
+func (store *Store) RevokeInvitation(ctx context.Context, organizationID, invitationID, ownerRole string, revokedAt time.Time, audit organizations.AuditEvent) error {
+	if !opaqueID(organizationID) || !opaqueID(invitationID) || ownerRole != "" && !safeName(ownerRole) || revokedAt.IsZero() || !validOrganizationAudit(audit, organizationID) {
 		return organizations.ErrInvitationNotFound
 	}
 	tx, err := store.db.BeginTx(ctx, nil)
@@ -752,6 +764,25 @@ func (store *Store) RevokeInvitation(ctx context.Context, organizationID, invita
 		return err
 	}
 	defer tx.Rollback()
+	if err = lockActiveMembershipActor(ctx, tx, organizationID, audit.ActorUserID); err != nil {
+		return err
+	}
+	var directRole string
+	if err = tx.QueryRowContext(ctx, `SELECT direct_role FROM gwf_organization_invitations WHERE organization_id=? AND id=? AND used_at IS NULL AND revoked_at IS NULL`, organizationID, invitationID).Scan(&directRole); err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
+			return organizations.ErrInvitationNotFound
+		}
+		return err
+	}
+	if ownerRole != "" && directRole == ownerRole {
+		actorIsOwner, ownerErr := hasDirectOwnerRole(ctx, tx, organizationID, audit.ActorUserID, ownerRole)
+		if ownerErr != nil {
+			return ownerErr
+		}
+		if !actorIsOwner {
+			return organizations.ErrOwnerAuthority
+		}
+	}
 	result, err := tx.ExecContext(ctx, `UPDATE gwf_organization_invitations SET revoked_at=? WHERE organization_id=? AND id=? AND used_at IS NULL AND revoked_at IS NULL`, revokedAt.Unix(), organizationID, invitationID)
 	if err != nil {
 		return err

authsqlite/store_test.go

@@ -653,6 +653,80 @@ func TestOrganizationRoleAdministrationIsAtomicAndProtectsOwners(t *testing.T) {
 	assertCount(t, store, `SELECT COUNT(*) FROM gwf_access_bindings WHERE id=?`, replacement.ID, 0)
 }
 
+func TestOwnerInvitationsRequireDirectOwnerAuthority(t *testing.T) {
+	store, err := Open(filepath.Join(t.TempDir(), "accounts.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer store.Close()
+	now := time.Date(2026, 9, 4, 12, 0, 0, 0, time.UTC)
+	authService, err := auth.New(store, auth.Options{Now: func() time.Time { return now }})
+	if err != nil {
+		t.Fatal(err)
+	}
+	owner, err := authService.CreateUser(t.Context(), auth.CreateUser{Username: "invitation.owner", Email: "invitation-owner@example.test", DisplayName: "Invitation Owner", Password: "correct horse battery staple"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	manager, err := authService.CreateUser(t.Context(), auth.CreateUser{Username: "invitation.manager", Email: "invitation-manager@example.test", DisplayName: "Invitation Manager", Password: "correct horse battery staple"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	organizationService, err := organizations.New(store, organizations.Options{Now: func() time.Time { return now }, OwnerRole: "owner"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	organization, err := organizationService.CreateOrganization(t.Context(), organizations.CreateOrganization{Slug: "invitation-authority", Name: "Invitation Authority", OwnerUserID: owner.ID})
+	if err != nil {
+		t.Fatal(err)
+	}
+	raw, _, err := organizationService.Invite(t.Context(), organization.ID, manager.Email, owner.ID, time.Hour)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err = organizationService.AcceptInvitation(t.Context(), raw, manager.ID); err != nil {
+		t.Fatal(err)
+	}
+	policy := access.Policy{
+		Roles:       map[string]string{"owner": "Owner", "site-admin": "Site administrator", "viewer": "Viewer"},
+		Permissions: map[string]string{"site.access.manage": "Manage site access"},
+		Grants:      map[string][]string{"owner": {"site.access.manage"}, "site-admin": {"site.access.manage"}, "viewer": {}},
+	}
+	accessService, err := access.New(store, policy, access.Options{Now: func() time.Time { return now }, OwnerRole: "owner"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err = accessService.Seed(t.Context()); err != nil {
+		t.Fatal(err)
+	}
+	if _, err = accessService.Grant(t.Context(), access.Grant{SubjectKind: access.User, SubjectID: owner.ID, Role: "owner", Scope: access.Scope{OrganizationID: organization.ID}, GrantedBy: owner.ID}); err != nil {
+		t.Fatal(err)
+	}
+	if _, err = accessService.Grant(t.Context(), access.Grant{SubjectKind: access.User, SubjectID: manager.ID, Role: "site-admin", Scope: access.Scope{OrganizationID: organization.ID}, GrantedBy: owner.ID}); err != nil {
+		t.Fatal(err)
+	}
+	if _, _, err = organizationService.InviteWithAccess(t.Context(), organizations.InviteWithAccess{OrganizationID: organization.ID, Email: "blocked-owner@example.test", InvitedByUserID: manager.ID, DirectRole: "owner", Lifetime: time.Hour}); !errors.Is(err, organizations.ErrOwnerAuthority) {
+		t.Fatalf("non-owner owner invitation err=%v", err)
+	}
+	_, viewerInvitation, err := organizationService.InviteWithAccess(t.Context(), organizations.InviteWithAccess{OrganizationID: organization.ID, Email: "viewer@example.test", InvitedByUserID: manager.ID, DirectRole: "viewer", Lifetime: time.Hour})
+	if err != nil {
+		t.Fatalf("non-owner ordinary invitation err=%v", err)
+	}
+	_, ownerInvitation, err := organizationService.InviteWithAccess(t.Context(), organizations.InviteWithAccess{OrganizationID: organization.ID, Email: "new-owner@example.test", InvitedByUserID: owner.ID, DirectRole: "owner", Lifetime: time.Hour})
+	if err != nil {
+		t.Fatalf("owner invitation err=%v", err)
+	}
+	if err = organizationService.RevokeInvitation(t.Context(), organization.ID, ownerInvitation.ID, manager.ID, "request-manager-owner-revoke"); !errors.Is(err, organizations.ErrOwnerAuthority) {
+		t.Fatalf("non-owner owner invitation revocation err=%v", err)
+	}
+	if err = organizationService.RevokeInvitation(t.Context(), organization.ID, viewerInvitation.ID, manager.ID, "request-manager-viewer-revoke"); err != nil {
+		t.Fatalf("ordinary invitation revocation err=%v", err)
+	}
+	if err = organizationService.RevokeInvitation(t.Context(), organization.ID, ownerInvitation.ID, owner.ID, "request-owner-owner-revoke"); err != nil {
+		t.Fatalf("owner invitation revocation err=%v", err)
+	}
+}
+
 func TestOptimisticMembershipLifecycleIsSerializedAndAtomic(t *testing.T) {
 	store, err := Open(filepath.Join(t.TempDir(), "accounts.db"))
 	if err != nil {

authwebauthn/algorithm_test.go

@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: MPL-2.0
+
+package authwebauthn
+
+import (
+	"crypto/ecdh"
+	"crypto/rand"
+	"errors"
+	"testing"
+
+	"gamertan.com/web/internal/webauthnvendored/protocol/webauthncbor"
+	"gamertan.com/web/internal/webauthnvendored/protocol/webauthncose"
+	wa "gamertan.com/web/internal/webauthnvendored/webauthn"
+)
+
+func TestEnforceCredentialAlgorithmUsesVerifiedCOSEKey(t *testing.T) {
+	privateKey, err := ecdh.P256().GenerateKey(rand.Reader)
+	if err != nil {
+		t.Fatal(err)
+	}
+	publicKey := privateKey.PublicKey().Bytes()
+	encoded, err := webauthncbor.Marshal(map[int64]any{
+		1:  int64(webauthncose.EllipticKey),
+		3:  int64(webauthncose.AlgES256),
+		-1: int64(webauthncose.P256),
+		-2: publicKey[1:33],
+		-3: publicKey[33:65],
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	credential := &wa.Credential{
+		PublicKey: encoded,
+		// This value is absent when a standards-compliant client serializes the
+		// mandatory attestation object without optional response conveniences.
+		Attestation: wa.CredentialAttestation{PublicKeyAlgorithm: 0},
+	}
+	if err = enforceCredentialAlgorithm(credential); err != nil {
+		t.Fatalf("verified ES256 COSE key rejected when convenience value was absent: %v", err)
+	}
+}
+
+func TestEnforceCredentialAlgorithmRejectsOtherOrInvalidKeys(t *testing.T) {
+	rsaKey, err := webauthncbor.Marshal(map[int64]any{
+		1:  int64(webauthncose.RSAKey),
+		3:  int64(webauthncose.AlgRS256),
+		-1: []byte{0xff},
+		-2: []byte{0x01, 0x00, 0x01},
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	for name, credential := range map[string]*wa.Credential{
+		"nil":       nil,
+		"malformed": {PublicKey: []byte("not-cose")},
+		"rsa":       {PublicKey: rsaKey},
+	} {
+		t.Run(name, func(t *testing.T) {
+			if err := enforceCredentialAlgorithm(credential); !errors.Is(err, ErrUnsupportedCredential) {
+				t.Fatalf("error=%v", err)
+			}
+		})
+	}
+}

authwebauthn/service.go

@@ -375,7 +375,7 @@ func (service *Service) finishRegistrationCeremony(ctx context.Context, ceremony
 	if err != nil {
 		return Credential{}, fmt.Errorf("authwebauthn: verify registration: %w", err)
 	}
-	if verified.Attestation.PublicKeyAlgorithm != int64(webauthncose.AlgES256) {
+	if err = enforceCredentialAlgorithm(verified); err != nil {
 		return Credential{}, ErrUnsupportedCredential
 	}
 	encoded, err := json.Marshal(verified)
@@ -407,6 +407,26 @@ func (service *Service) finishRegistrationCeremony(ctx context.Context, ceremony
 	return record, nil
 }
 
+// enforceCredentialAlgorithm derives the algorithm from the verified COSE key
+// carried inside authenticator data. AuthenticatorAttestationResponse's
+// publicKeyAlgorithm member is an optional browser convenience value: clients
+// that serialize the mandatory attestation object directly may omit it, and it
+// is not the cryptographically authoritative representation.
+func enforceCredentialAlgorithm(credential *wa.Credential) error {
+	if credential == nil {
+		return ErrUnsupportedCredential
+	}
+	parsed, err := webauthncose.ParsePublicKey(credential.PublicKey)
+	if err != nil {
+		return ErrUnsupportedCredential
+	}
+	key, ok := parsed.(webauthncose.EC2PublicKeyData)
+	if !ok || key.Algorithm != int64(webauthncose.AlgES256) {
+		return ErrUnsupportedCredential
+	}
+	return nil
+}
+
 func (service *Service) BeginLogin(ctx context.Context) (BeginResult, error) {
 	challenge, err := service.randomBytes(32)
 	if err != nil {

docs/DOGFOOD.md

@@ -79,3 +79,17 @@ application concern belongs in the shared module.
   that invariant into the same SQLite transactions as direct-role and
   membership changes, while leaving the application's role vocabulary and UI
   policy application-owned.
+- Gamertan's invitation work found the same authority boundary before a route
+  was exposed: Site Admin must be able to invite ordinary staff without being
+  able to grant or cancel Owner access. Preview 20 passes the configured owner
+  role into invitation mutations and rechecks a current active direct Owner
+  after acquiring the SQLite write lock. The application still owns fresh
+  authentication, recipient delivery, and the one-time secret presentation.
+- A real Bitwarden/Vaultwarden owner enrollment reached successful WebAuthn
+  verification but was rejected by a redundant algorithm check because the
+  application's direct response serializer omitted the optional browser
+  `publicKeyAlgorithm` convenience member. Preview 21 keeps ES256-only policy
+  enforcement but derives it from the verified COSE key embedded in
+  authenticator data. This makes the server independent of serializer-specific
+  convenience fields without weakening origin, challenge, user-verification,
+  or algorithm validation.

docs/GETTING_STARTED.md

@@ -26,7 +26,7 @@ The packages are ordinary Go imports. Pin the current preview and verify its
 module checksum:
 
 ```bash
-go get gamertan.com/web/requestmeta@v0.1.0-preview.19
+go get gamertan.com/web/requestmeta@v0.1.0-preview.21
 go mod verify
 ```
 

docs/MODULES.md

@@ -18,7 +18,7 @@ import "gamertan.com/web/requestmeta"
 and request the containing module at an exact version:
 
 ```bash
-go get gamertan.com/web/requestmeta@v0.1.0-preview.19
+go get gamertan.com/web/requestmeta@v0.1.0-preview.21
 ```
 
 Only imported packages are compiled and linked. The packages nevertheless

docs/ORGANIZATIONS.md

@@ -12,6 +12,10 @@ expiring, single-use invitations. An invitation may carry one direct role and
 up to sixteen reviewed team memberships. Acceptance verifies that the
 authenticated user's normalized email matches and applies the membership,
 role, teams, consumption marker, and audit event in one transaction.
+When `OwnerRole` is configured, creating or revoking an invitation carrying
+that role additionally requires a current active direct owner inside the same
+SQLite transaction. A broad access-management permission may administer
+ordinary invitations but cannot create or cancel owner access.
 Applications own invitation pages, email or out-of-band delivery, active-source
 checks before archival, and account recovery.
 

docs/PASSKEYS.md

@@ -19,6 +19,10 @@ authorization decisions, session cookie, HTML, and local recovery command.
 - Request no attestation conveyance.
 - Permit ES256 only until another algorithm has explicit interoperability and
   security evidence.
+- Enforce that policy from the verified COSE public key embedded in
+  authenticator data. Do not rely on the optional browser
+  `publicKeyAlgorithm` convenience member: direct standards-compliant response
+  serializers may omit it even when the attested credential is ES256.
 - Store random challenges and verifier session data only behind opaque,
   single-use ceremony tokens.
 - Treat clone warnings as audit signals rather than automatic lockout for

organizations/organizations.go

@@ -27,7 +27,7 @@ var (
 	ErrRevisionConflict               = errors.New("organizations: revision conflict")
 	ErrPersonalOrganization           = errors.New("organizations: personal organization lifecycle is fixed")
 	ErrLastOwner                      = errors.New("organizations: the last active direct owner must be preserved")
-	ErrOwnerAuthority                 = errors.New("organizations: a current direct owner must manage owner memberships")
+	ErrOwnerAuthority                 = errors.New("organizations: a current direct owner must manage owner access")
 	slugPattern                       = regexp.MustCompile(`^[a-z0-9][a-z0-9-]{1,62}$`)
 	idPattern                         = regexp.MustCompile(`^[A-Za-z0-9_-]{8,128}$`)
 )
@@ -104,10 +104,10 @@ type Repository interface {
 	CreateProject(context.Context, Project) error
 	CreateEnvironment(context.Context, Environment) error
 	CreateApplicationService(context.Context, ApplicationService) error
-	CreateInvitation(context.Context, Invitation, AuditEvent) error
+	CreateInvitation(context.Context, Invitation, string, AuditEvent) error
 	InvitationByDigest(context.Context, [32]byte, time.Time) (Invitation, error)
 	Invitations(context.Context, string, int) ([]Invitation, error)
-	RevokeInvitation(context.Context, string, string, time.Time, AuditEvent) error
+	RevokeInvitation(context.Context, string, string, string, time.Time, AuditEvent) error
 	AcceptInvitation(context.Context, [32]byte, string, time.Time, AuditEvent) error
 	OrganizationMemberships(context.Context, string, int) ([]Membership, error)
 	MembershipsForUser(context.Context, string) ([]Membership, error)
@@ -314,7 +314,7 @@ func (service *Service) InviteWithAccess(ctx context.Context, input InviteWithAc
 	if err != nil {
 		return "", Invitation{}, err
 	}
-	if err = service.repository.CreateInvitation(ctx, invitation, audit); err != nil {
+	if err = service.repository.CreateInvitation(ctx, invitation, service.ownerRole, audit); err != nil {
 		return "", Invitation{}, err
 	}
 	return raw, invitation, nil
@@ -559,7 +559,7 @@ func (service *Service) RevokeInvitation(ctx context.Context, organizationID, in
 	if err != nil {
 		return err
 	}
-	return service.repository.RevokeInvitation(ctx, organizationID, invitationID, now, audit)
+	return service.repository.RevokeInvitation(ctx, organizationID, invitationID, service.ownerRole, now, audit)
 }
 
 func (service *Service) Repository() Repository { return service.repository }

organizations/organizations_test.go

@@ -100,7 +100,7 @@ func (*repositoryStub) CreateEnvironment(context.Context, Environment) error { r
 func (*repositoryStub) CreateApplicationService(context.Context, ApplicationService) error {
 	return nil
 }
-func (repository *repositoryStub) CreateInvitation(_ context.Context, invitation Invitation, _ AuditEvent) error {
+func (repository *repositoryStub) CreateInvitation(_ context.Context, invitation Invitation, _ string, _ AuditEvent) error {
 	repository.invitation = invitation
 	return nil
 }
@@ -113,7 +113,7 @@ func (repository *repositoryStub) InvitationByDigest(context.Context, [32]byte,
 func (*repositoryStub) Invitations(context.Context, string, int) ([]Invitation, error) {
 	return nil, nil
 }
-func (*repositoryStub) RevokeInvitation(context.Context, string, string, time.Time, AuditEvent) error {
+func (*repositoryStub) RevokeInvitation(context.Context, string, string, string, time.Time, AuditEvent) error {
 	return nil
 }
 func (repository *repositoryStub) AcceptInvitation(_ context.Context, _ [32]byte, userID string, _ time.Time, _ AuditEvent) error {