[ntp:questions] Can NTPv4 be fully fuctional without the Public Key Cryptography

Danny Mayer mayer at ntp.isc.org
Thu Dec 22 04:17:43 UTC 2005

Arul Kumar C wrote:
> Hi All,
> Can NTPv4 code, be run without Public Key Cryptography.  I am trying to
> understand the NTPv4 implementation.  I went through the Draft and the
> presentations listed in the site.  I could get that both Symmetric key
> and Public key are supported.  And also from the code (ntp-4.2.0), all
> the public key crypto is placed within OPENSSL pre-processor macro.
> Inspite of all these, I could not strongly conclude that they are
> optional.  Just willing to make sure from you experts, whether NTPv4
> can fully functional without  Public Key Cryptography.
> Please enlighten me.  Please let me know if I am missing any info.
> Regards,
> Arul Kumar C
Yes, you can build without OpenSSL and authentication capability.
There's a configuration option to do this. We regularly build without
authentication for testing builds. This only applies to Unix. On Windows
we didn't bother to make it an option but you can change the config.h
file to do so.


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