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The Diffie–Hellman key agreement is an anonymous, non-authenticated key-agreement protocol.

15 votes
Accepted

OpenVPN dhparam

Much of this has been addressed before. See my answer and Thomas's answer to a related question for more info about DH and DH parameters. The parameters are just primes, not keys. They don't need to …
tylerl's user avatar
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405 votes
Accepted

"Diffie-Hellman Key Exchange" in plain English

Diffie-Hellman is a way of generating a shared secret between two people in such a way that the secret can't be seen by observing the communication. That's an important distinction: You're not sharing …
tylerl's user avatar
  • 83.8k
2 votes

Should I test my SSL certificate for "RSA Shared Primes" before using it?

If it is simple enough to test, then you might as well do so. I don't know of any service or other mechanism that will do this test for you, but if you do then have at it. The likelihood of an attack …
tylerl's user avatar
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39 votes
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Can someone explain what exactly is accomplished by generation of DH parameters?

The traditional RSA-based exchange in SSL is nice in that a random session key is generated and transmitted using asymmetric encryption, so only the owner of the private key can read it. This means th …
tylerl's user avatar
  • 83.8k