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The certificate is not encrypted. It contains signatures (basically hashes) that are encrypted with the private key. The public key can decrypt that and the hash can be verified. In SSL/TLS there is a signature that the client supplies via private key to prove they are the owner, and the CA has signed it the cert with their private key, which can be ...


Signature generation and encryption are two different concepts. The fact that both can use the same one way function does not change that fact. In the case of RSA, both signature generation and encryption (as well as verification and decryption) uses modular exponentiation. These are called the RSA primitives. They have however different inputs: one uses the ...

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