feat(scim): store a per-provider SCIM token - #2670
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Adds `sso_providers.scim_token_hash`, a SHA-256 hex digest of the provider's SCIM token, with a partial unique index over the non-null values. The plaintext is never stored, and resolution is a single indexed equality on the digest rather than a comparison.
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What kind of change does this PR introduce?
Feature. Adds
sso_providers.scim_token_hash, a SHA-256 hex digest of the provider's SCIM token, with a partial unique index over the non-null values.https://linear.app/supabase/issue/AUTH-1368/scim-users-get-by-id)
What is the current behavior?
The
/scim/v2router ships dark behindGOTRUE_EXPERIMENTAL_SCIM_ENABLEDand serves the three discovery endpoints, but it has no authentication at all.There is no way to associate a SCIM request with an SSO provider:
sso_providershas no SCIM columns.ServiceProviderConfigalready advertisesoauthbearertokenas its primary authentication scheme, with nothing behind it.What is the new behavior?
sso_providersgainsscim_token_hash, holding the SHA-256 hex digest of the provider's SCIM token, plus a partial unique index over the non-null values.The plaintext token is never stored. Resolution is a single indexed equality on the digest of a secret, so there is no plaintext comparison and no timing-sensitive path.
Additional context