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Re: Diffie-Hellman Key Generation

To: [email protected]
Subject: Re: Diffie-Hellman Key Generation
From: [email protected] (Anonymous)
Date: Sat, 28 Oct 1995 06:01:02 -0700 (PDT)
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> Finally, I'm basing this on comments in 'Applied Cryptography' that D-H
> keys should be at least 512 bits and preferably 1024. How does the
> difficulty of breaking a D-H exchange with a 512 bit key compare to
> breaking a 512 bit RSA key ?

Calculating discrete logarithms is a bit more difficult than factoring.
So a 512-bit DH modulus will give you somewhat more security than a 512-bit
RSA key.  I'm not sure how much, probably not a lot.

References:
- Diffie-Hellman Key Generation
  - From: "Rev. Mark Grant" <[email protected]>

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