# Which Problems Are Solved
Currently ZITADEL only allows the use of RSA public keys for machine
user authentication (jwt-bearer grant), including for system API users.
Attempting to use ECDSA (e.g. P-256) or ED25519 keys results in
`Errors.Internal` because `BytesToPublicKey` performs an
`ifc.(*rsa.PublicKey)` type assertion that returns `(nil, nil)` for
non-RSA keys, which then causes a nil key panic in go-jose during JWT
verification.
This is the same fix as #8433 (by @livio-a), rebased onto current
`main`.
# How the Problems Are Solved
- `BytesToPublicKey` now returns `crypto.PublicKey` (the standard
library interface) instead of `*rsa.PublicKey`
- A type switch validates the parsed key is one of `*rsa.PublicKey`,
`*ecdsa.PublicKey`, or `ed25519.PublicKey`
- A new `ErrNoPublicKey` sentinel error is returned for unsupported key
types instead of silently returning nil
- Callers in `system_token.go` and `query/key.go` are updated to use the
generic `crypto.PublicKey` interface
# Additional Changes
None
# Additional Context
Duplicate of #8433 which has been open since August 2024. We hit this
bug while implementing OIDC bootstrap for an SGX enclave that generates
ECDSA P-256 keys at runtime -- the `AddKey` API accepts the ECDSA SPKI
PEM fine, but the subsequent `jwt-bearer` token exchange fails with
`Errors.Internal` due to the nil key.
---------
Co-authored-by: Copilot <[email protected]>
Co-authored-by: Wim Van Laer <[email protected]>
# Which Problems Are Solved
System API users currently authenticate using raw RSA public keys
configured via Path or KeyData. This approach doesn't integrate well
with Kubernetes tooling.
# How the Problems Are Solved
Allow for the `path`/`keyData` to be an X.509 certificate.
The `NotBefore` and `NotAfter` fields of the certificate are beeing
respected when validating the JWT.
# Additional Changes
# Additional Context
- Closes#11442
---------
Co-authored-by: Livio Spring <[email protected]>
* define roles and permissions
* support system user memberships
* don't limit system users
* cleanup permissions
* restrict memberships to aggregates
* default to SYSTEM_OWNER
* update unit tests
* test: system user token test (#6778)
* update unit tests
* refactor: make authz testable
* move session constants
* cleanup
* comment
* comment
* decode member type string to enum (#6780)
* decode member type string to enum
* handle all membership types
* decode enums where necessary
* decode member type in steps config
* update system api docs
* add technical advisory
* tweak docs a bit
* comment in comment
* lint
* extract token from Bearer header prefix
* review changes
* fix tests
* fix: add fix for activityhandler
* add isSystemUser
* remove IsSystemUser from activity info
* fix: add fix for activityhandler
---------
Co-authored-by: Stefan Benz <[email protected]>
Livio SpringandGitHub
Tim MöhlmannandGitHub
