Cryptography
失効状態
The current validity state of a digital certificate as determined by a recognized Certificate Authority (CA), typically indicating whether a certificate is active, revoked, or suspended per OCSP, CRL, or similar mechanisms.
Quick answer: The current validity state of a digital certificate as determined by a recognized Certificate Authority (CA), typically indicating whether a certificate is active, revoked, or suspended per OCSP, CRL, or similar mechanisms.
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Quick answer
The current validity state of a digital certificate as determined by a recognized Certificate Authority (CA), typically indicating whether a certificate is active, revoked, or suspended per OCSP, CRL, or similar mechanisms.
Why it matters
失効状態 matters because it supports clear communication in Cryptography contexts for SOC Analysts, Security Engineers, and Incident Responders. It also connects to aviation training and exam language such as CISSP, CompTIA Security+, and CEH.
Editorial context
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Definition
The current validity state of a digital certificate as determined by a recognized Certificate Authority (CA), typically indicating whether a certificate is active, revoked, or suspended per OCSP, CRL, or similar mechanisms.
Operational example
Before accepting a client certificate, the server checks its revocation status using an OCSP responder to ensure the certificate is still valid and has not been revoked by the issuing CA.
Localized example
サーバーはクライアント証明書を受け入れる前に、OCSPレスポンダーを使って失効状態を確認し、証明書が依然有効で発行CAにより失効されていないことを保証します。
Definition language
English reference definition
Source
ISO 27001, NIST Cybersecurity Framework, MITRE ATT&CK
Exam relevance
- CISSP
- CompTIA Security+
- CEH
Target audience
- SOC Analysts
- Security Engineers
- Incident Responders
