Issuer
An issuer is the entity identified as having created or signed a credential, certificate, token, or other security artifact.
Authorization in Action
A credential issuer is an entity that creates or signs credentials and whose authority may be recognized for specified credential types.
- How it is used
- Supplies authoritative external claims as verified context for authorization decisions.
- How deep it goes
- Explains signing, authority assessment, scoped trust-store entries, status checks, and governance operations.
- Examples
- Uses AuditsRUs employment credentials, NISA accreditation, and an auditor whose revoked employment credential is denied.
- What you can do after
- Evaluate/understand whether an issuer is authorized for a credential type and how its claims enter policy evaluation.
Software Security for Developers
An issuer field is the X.509 certificate field that identifies the certificate authority or entity that issued the certificate.
- How it is used
- Identifies the authority that created an X.509 certificate and supplies an initial clue for deciding whether its identity should be trusted.
- How deep it goes
- Defines the issuer’s structured fields and role in trust validation, but defers detailed processing of the remaining X.509 fields.
- Examples
- Uses a GitHub certificate issued by DigiCert, OpenSSL inspection commands, and a self-signed local development CA.
- What you can do after
- Operate/configure OpenSSL to inspect an issuer and interpret its country, organization, and common-name components.
Related concepts
- certificatepart of · A digital certificate is a digitally signed credential that binds an identity to a public key and supports authentication or secure communication.
- trust storepart of · A trust store is a repository of certificates or public keys that a system accepts as trusted when validating identities or secure communications.
- decentralized credentialproduces · A digitally verifiable claim that a holder controls and presents to a verifier without requiring a single centralized identity provider.
- credentialproduces · A credential is information or an artifact presented as evidence of an entity’s identity, qualifications, status, or authorization to access a system or resource.
- certificate subjectequivalent to · A certificate subject is the certificate field identifying the entity that owns or is associated with the public key.
These guides are generated from the text of Manning books by Manning's knowledge graph and link to the sections they draw on. The full books are available on liveBook and at manning.com.

