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Topic: Public key cryptography

Tom Hanlin
Member

posted August 03, 2001 08:36 AM

Wayne, it is true that crackers can't read encrypted code, but nor can the
computer run it. The code has to be decrypted before it will run, at which
point the cracker can read it too.

Rodney, the encryption approach you describe is not secure. As you note, a
"random number generator" (more accurately, pseudo-random number generator)
does not generate genuinely random number sequences.

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Tom Hanlin
PowerBASIC Staff

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Tim Wisseman
unregistered

posted August 03, 2001 10:35 AM

What I posted truely is public key encryption, however it is
very easy to break and was just an example of how it is done.
It was for learning purposes only and not something that could
be used for real world work.

Like my sample code, if you have a public key and the algoritms
you can find the private key give enough time. It might take a
nano second or 500 billion years, depending on the complexity
of the system.

The goal is to make the mathamatical path from the public key
to the private key as hard as possible. That is the power of the
RSA encryption methods.

Tim

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