In cryptography, certificate authority, or certification authority, (CA) is an entity that issues digital certificates. The digital certificate certifies the ownership of a public key by the named subject of the certificate. This allows others (relying parties) to rely upon signatures or assertions made by the private key that corresponds to the public key that is certified.
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Last week, at the 49th CA/Browser Forum, Apple announced that it'll stop allowing HTTPS certificates with more than 13 months ...