Search results
Results from the WOW.Com Content Network
In cryptography, a certificate revocation list (CRL) is "a list of digital certificates that have been revoked by the issuing certificate authority (CA) before their scheduled expiration date and should no longer be trusted". [1]
A certificate revocation list (CRL) enumerates revoked certificates. They are cryptographically authenticated by the issuing CA. [29] CRLs have scalability issues, and rely on the client having enough network access to download them prior to checking a certificate's status. [9]
The OCSP responder uses the certificate serial number to look up the revocation status of Alice's certificate. The OCSP responder looks in a CA database that Carol maintains. In this scenario, Carol's CA database is the only trusted location where a compromise to Alice's certificate would be recorded.
The dominant method used for this purpose is to host a certificate revocation list (CRL) for download via the HTTP or LDAP protocols. To reduce the amount of network traffic required for certificate validation, the OCSP protocol may be used instead.
Download QR code; Print/export Download as PDF; ... Pages in category "Certificate revocation" The following 5 pages are in this category, out of 5 total.
Without revocation, an attacker would be able to exploit such a compromised or misissued certificate until expiry. [31] Hence, revocation is an important part of a public key infrastructure. [32] Revocation is performed by the issuing CA, which produces a cryptographically authenticated statement of revocation. [33]
For example, Firefox provides a CSV and/or HTML file containing a list of Included CAs. [8] X.509 and RFC 5280 also include standards for certificate revocation list (CRL) implementations. Another IETF-approved way of checking a certificate's validity is the Online Certificate Status Protocol (OCSP).
A typical use of a PKCS #7 file would be to store certificates and/or certificate revocation lists (CRL). Here's an example of how to first download a certificate, then wrap it inside a PKCS #7 archive and then read from that archive: