[19295] in Kerberos_V5_Development
Re: krb5-1.14-beta1 is available
daemon@ATHENA.MIT.EDU (Wang Weijun)
Fri Oct 9 21:22:22 2015
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From: Wang Weijun <weijun.wang@oracle.com>
In-Reply-To: <ldvsi5jcyp8.fsf@sarnath.mit.edu>
Date: Sat, 10 Oct 2015 09:22:07 +0800
Message-Id: <1F55B133-2D51-45DA-92D2-7E2F05623AD3@oracle.com>
To: Tom Yu <tlyu@mit.edu>
Cc: krbdev@mit.edu
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So in kadmin if a principal is created with -pw there are only strong keys but if password is chosen randomly 3DES and RC4 keys will also be generated? I will need to download it to try out.
Also, is there any change on the client side, say, in a AS-REQ, what is inside the etypes list?
Thanks
Max
> On Oct 10, 2015, at 9:13 AM, Tom Yu <tlyu@mit.edu> wrote:
>
> This is a challenging to explain concisely, but basically in Kerberos,
> 3DES and RC4 are still reasonably strong for randomly generated keys but
> not for password-derived ones.
>
> krb5-devel/doc is master, not the release branch, but it's close enough
> for now.
>
> -Tom
>
> Wang Weijun <weijun.wang@oracle.com> writes:
>
>> You mean all 3DES and RC4 etypes as described in https://tools.ietf.org/html/draft-kaduk-kitten-des-des-des-die-die-die-00? I see 16 and 23 still not marked weak in http://web.mit.edu/kerberos/krb5-devel/doc/admin/conf_files/kdc_conf.html#encryption-types.
>>
>> BTW, is the krb5-devel/doc pages always synced with the latest public beta?
>>
>> Thanks
>> Max
>>
>>> On Oct 10, 2015, at 4:44 AM, Tom Yu <tlyu@mit.edu> wrote:
>>>
>>>
>>> * Remove the triple-DES and RC4 encryption types from the default
>>> value of supported_enctypes, which determines the default key and
>>> salt types for new password-derived keys. By default, keys will
>>> only created only for AES128 and AES256. This mitigates some types
>>> of password guessing attacks.
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