# Which Problems Are Solved
As part of #11035 , this PR implements the TOTP check logic for session
validation
# How the Problems Are Solved
- Implement TOTP check logic and tests
- The tarpit function has been moved to a common file so that it can be
used by both TOTP and password checks
- Manual transaction management to avoid stalling the DB while verifier
function is executed
- Update `database.Change` `Matches()` function to allow comparison of
`time.Time` values
- A converter package from GRPC to Domain model has been added
# Additional Context
This is a cherry-picked PR + changes, coming from
https://github.com/zitadel/zitadel/pull/11164
- Relates to #11035
# Which Problems Are Solved
This PR adds the OTP SMS Challenge needed for CreateSession API
https://github.com/zitadel/zitadel/issues/11035
# How the Problems Are Solved
- Introduce `OTPSMSChallengeCommand` (validate/execute/events) for
session creation checks
- Introduce `GetOTPCryptoGeneratorConfigWithDefault` to fetch
per-instance secret generator settings
- Add unit tests
# Additional Changes
Refactor tests in `session_check_recovery_code_test.go` to make the
helper functions reusable in `session_challenge_otp_sms_test.go`
# Additional Context
Related to https://github.com/zitadel/zitadel/issues/11035
# Which Problems Are Solved
Adding recovery code check step required for the CreateSession RT
implementation.
# How the Problems Are Solved
- Introduce `RecoveryCodeCheckCommand` (validate/execute/events) for
session creation checks
- Add unit tests
# Additional Changes
- refactor password-check code to reuse a shared lockout-policy helper
- add some missing error translations in `internal/static/i18n/en.yaml`
# Additional Context
- Related to https://github.com/zitadel/zitadel/issues/11035
---------
Co-authored-by: Silvan <[email protected]>
Co-authored-by: Copilot Autofix powered by AI <[email protected]>
Marco A.andGitHub
Gayathri VijayanandGitHub
