Brother International DCP-8155DN Network User's Guide - English - Page 176
Security terms and concepts, Security features, Security terms
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14 Security terms and concepts 14 Security features 14 Security terms 14 CA (Certificate Authority) A CA is an entity that issues digital certificates (especially X.509 certificates) and vouches for the binding between the data items in a certificate. CSR (Certificate Signing Request) A CSR is a message sent from an applicant to a CA in order to apply for issue of a certificate. The CSR contains information identifying the applicant, the public key generated by the applicant and the digital signature of the applicant. Certificate A Certificate is the information that binds together a public key with an identity. The certificate can be used to verify that a public key belongs to an individual. The format is defined by the x.509 standard. CA Certificate A CA Certificate is the certification that identifies the CA (Certificate Authority) itself and owns its private key. It verifies a certificate issued by the CA. Digital signature A Digital signature is a value computed with a cryptographic algorithm and appended to a data object in such a way that any recipient of the data can use the signature to verify the data's origin and integrity. Public key cryptosystem A Public key cryptosystem is a modern branch of cryptography in which the algorithms employ a pair of keys (a public key and a private key) and use a different component of the pair for different steps of the algorithm. Shared key cryptosystem A Shared key cryptosystem is a branch of cryptography involving algorithms that use the same key for two different steps of the algorithm (such as encryption and decryption). 14 169