X.509 certificate
An X.509 certificate is a standardized, digitally signed data structure that binds an identity to a public key and contains related metadata.
MongoDB 8.0 in Action, Third Edition
An X.509 certificate is a standardized digital certificate that binds an identity to a public key for authenticated cryptographic communication.
- How it is used
- Provides certificate-based authentication for MongoDB clients and cluster nodes, especially in high-trust environments.
- How deep it goes
- Explains PKI, encryption, digital signatures, mutual authentication, and deployment choices but stops short of configuration procedures.
- Examples
- Uses finance, health care, and government as high-trust deployment contexts.
- What you can do after
- Evaluate X.509 against password, federated, cloud-identity, and directory-based authentication requirements.
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Acing the Certified Kubernetes Administrator Exam, Second Edition
An X.509 certificate is a standardized digital certificate format used to bind an identity to a public key.
- How it is used
- Authenticates human kubectl requests before RBAC evaluates access to Kubernetes API resources.
- How deep it goes
- Explains signed certificates, kubeconfig storage, certificate authorities, API verification, and the distinction from Service Account tokens.
- Examples
- Uses kubectl access to list kube-system pods and illustrates certificate-based API access alongside token-based access.
- What you can do after
- Operate kubectl with certificate-based user authentication and distinguish it from pod authentication using Service Account tokens.
Google Anthos in Action
An X.509 certificate is a public-key certificate conforming to the X.509 standard format.
- How it is used
- Provides workload identity and certificate-based security for service-to-service communication in an Istio service mesh.
- How deep it goes
- Explains certificate purpose, CA configuration options, protocol use, and automated rotation, but not certificate fields or encoding internals.
- Examples
- Uses self-signed roots, administrator-specified roots, delegated CA signing certificates, and automated workload certificate rotation.
- What you can do after
- Operate/configure Istio certificate authorities and understand how issued certificates enable workload identity and mutual TLS.
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Related concepts
- TLSuses · Transport Layer Security (TLS) is a cryptographic protocol that protects network communications through confidentiality, integrity, and authentication of communicating endpoints.
- certificate-based authenticationused by · Certificate-based authentication verifies an identity using a signed digital certificate presented by the requesting client.
- certificatekind of · A digital certificate is a digitally signed credential that binds an identity to a public key and supports authentication or secure communication.
- authenticationimplements · Authentication is the process of establishing or verifying the identity of a user, service, device, or other communicating entity.
- public-key infrastructureuses · Public-key infrastructure is a framework of authorities, certificates, keys, policies, and procedures for establishing and managing public-key trust and digital identities.
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