# Prime number 65537 as private exponent - PGP

This is a discussion on Prime number 65537 as private exponent - PGP ; Found in gnu-crypto-2.1.0 list of several prime numbers. Prime number has no factors in common with (p-1)*(q-1). If 65537 is the prime number then RSA test d=((p-1)*(q-1),e) give known value of d. How to use RSA patent?...

# Thread: Prime number 65537 as private exponent

1. ## Prime number 65537 as private exponent

Found in gnu-crypto-2.1.0 list of several prime numbers. Prime number
has no factors in common with (p-1)*(q-1). If 65537 is the prime
number then RSA test
d=((p-1)*(q-1),e)
give known value of d.
How to use RSA patent?

2. ## Re: Prime number 65537 as private exponent

On 3/16/2008 1:52 AM, vik@chelnydom.ru wrote:
> Found in gnu-crypto-2.1.0 list of several prime numbers. Prime number
> has no factors in common with (p-1)*(q-1). If 65537 is the prime
> number then RSA test
> d=((p-1)*(q-1),e)
> give known value of d.
> How to use RSA patent?

I don't quite understand your question. However, the RSA company waived
its rights and declared its RSA encryption algorithm to be in the public
domain less than a year before the patent expired. As far as I know,
the company then made no effort to extend or renew the patent.

--
David Ross

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