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The point of a premaster secret is to provide greater consistency between TLS cipher suites. While RSA cipher suites involve the client sending a random 48-byte premaster secret directly to the server, other suites do more complex things to generate the secret, and end up with a secret that might have some structure to it. For instance, (EC)DH suites use ...


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Ok so first thing, RSA is a signature algorithm where DSS is a signature standard that currently uses the DSA algorithm with fixed parameters. For more details, see this great explanation. So what we are actually comparing is RSA and DSA. The main difference is, that they rely on completely different hardness assumptions. I will try to explain them in a ...


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There is no separate "digital signature exchange." A certificate is a self-contained thing; it contains an "issuer" field (with a DN of the CA that signed it) and a "signature" field (with a signature from that CA). A server does not just send its certificate in the ServerCertificate message; it sends a whole chain of certificates, starting with theirs, then ...



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