# IA-13 Identity Providers and Authorization Servers

NIST SP 800-53 control. Family: IA Identification and Authentication. Function: preventative. In no baseline. Mapping licence: CC BY-SA 4.0.

Statement: Employ identity providers and authorization servers to manage user, device, and non-person entity (NPE) identities, attributes, and access rights supporting authentication and authorization decisions in accordance with [Assignment: organization-defined identification and authentication policy] using [Assignment: organization-defined mechanisms].
Guidance: Identity providers, both internal and external to the organization, manage the user, device, and NPE authenticators and issue statements, often called identity assertions, attesting to identities of other systems or systems components. Authorization servers create and issue access tokens to identified and authenticated users and devices that can be used to gain access to system or information resources. For example, single sign-on (SSO) provides identity provider and authorization server functions. Authenticator management (to include credential management) is covered by IA-05.

## Enhancements (3)
- IA-13(01) Protection of Cryptographic Keys
- IA-13(02) Verification of Identity Assertions and Access Tokens
- IA-13(03) Token Management
Each enhancement's statement: /api/v1/controls/IA-13?fields=enhancements

## Patterns that use it (1)
- Important (1): SP-052 Decentralised Identity & Verifiable Credentials (draft)

## Clauses by framework (1 frameworks)
- nist_csf_2: PR.AA-04, PR.AA-05
OSA's mapping for nist_csf_2 takes NIST's published crosswalk as its base. A clause not marked as OSA's own is in that crosswalk.

## More
- This control as JSON, with guidance and ATT&CK techniques: /api/v1/controls/IA-13
- Clauses only: /api/v1/controls/IA-13?fields=mappings
- Page for people: /controls/ia-13/
- Found an error? Open an issue at https://github.com/opensecurityarchitecture/osa-data/issues with the id, what OSA says and what the source says.