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In public key infrastructure (PKI) systems, a certificate signing request (CSR or certification request) is a message sent from an applicant to a certificate authority of the public key infrastructure (PKI) in order to apply for a digital identity certificate. The CSR usually contains the public key for which the certificate should be issued ...
In cryptography, a public key certificate, also known as a digital certificate or identity certificate, is an electronic document used to prove the validity of a public key. [ 1 ] [ 2 ] The certificate includes the public key and information about it, information about the identity of its owner (called the subject), and the digital signature of ...
A medical certificate or doctor's certificate [1] [2] is a written statement from a physician or another medically qualified health care provider which attests to the result of a medical examination of a patient. [3] It can serve as a sick note (UK: fit note) (documentation that an employee is unfit for work) or evidence of a health condition. [4]
The format of these certificates is specified by the X.509 or EMV standard. One particularly common use for certificate authorities is to sign certificates used in HTTPS, the secure browsing protocol for the World Wide Web. Another common use is in issuing identity cards by national governments for use in electronically signing documents.
Similarly to the Certificate Management Protocol (CMP), it can be used for obtaining X.509 digital certificates in a public key infrastructure (PKI). CMS is one of two protocols utilizing the Certificate Request Message Format (CRMF), described in RFC 4211, with the other protocol being CMP.
This is a modification of the Epopt's letter above. Changes have been made to make it less specific to the particular situation that inspired the original letter, and more applicable to other cases. Name or Title Address. Dear <NAME>: I am an editor of Wikipedia, a multilingual project to create a complete and accurate encyclopedia by open editing.
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The OCSP request format supports additional extensions. This enables extensive customization to a particular PKI scheme. OCSP can be vulnerable to replay attacks , [ 12 ] where a signed, 'good' response is captured by a malicious intermediary and replayed to the client at a later date after the subject certificate may have been revoked.