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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 ...
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.
The CRMF format, as used by Certificate Management Protocol (CMP) and CMS, is more flexible here, supporting also keys that are usable for encryption only. Although proof-of-origin of certificate enrollment requests, i.e., authentication of the certificate requester, is the most critical security requirement, for pragmatic reasons its support ...
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]
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No Objection Certificate, popularly abbreviated as NOC, is a type of legal certificate issued by any agency, organisation, institute or, in certain cases, ...
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