Bug 37621 - Improve defaults for root certificate private key
Improve defaults for root certificate private key
Status: CLOSED FIXED
Product: UCS
Classification: Unclassified
Component: SSL
UCS 4.0
Other Linux
: P5 enhancement (vote)
: UCS 4.1-2-errata
Assigned To: Bugzilla Mailingliste
Janek Walkenhorst
:
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Reported: 2015-01-26 15:55 CET by Michael Grandjean
Modified: 2016-07-21 15:16 CEST (History)
2 users (show)

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Attachments
Change key encryption and default bits for root-CA private key (2.51 KB, patch)
2015-09-19 00:13 CEST, Michael Grandjean
Details | Diff

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Description Michael Grandjean univentionstaff 2015-01-26 15:55:33 CET
Most of the private key options are hardcoded in make-certificates.sh:

> openssl genrsa -des3 -passout pass:"$PASSWD" -out "${CA}/private/CAkey.pem" 2048

It should be possible to configure:

1. key encryption algorithm
I think we should default to '-aes256' instead of '-des3'. As far as I know there's yet nothing wrong with 3DES except that it is really slow compared to AES.

2. key length:
2048 bits might be enough for today, but who knows if that's still the case in 5 years (default UCS-CA validity)

3. key algorithm
we should consider supporting ECDSA keys (instead of / additionally to RSA) in the near future
Comment 1 Michael Grandjean univentionstaff 2015-09-19 00:13:22 CEST
Created attachment 7176 [details]
Change key encryption and default bits for root-CA private key
Comment 2 Philipp Hahn univentionstaff 2016-06-23 08:42:21 CEST
(In reply to Michael Grandjean from comment #0)
> 2. key length:
> 2048 bits might be enough for today, but who knows if that's still the case
> in 5 years (default UCS-CA validity)

This was implemented through Bug #30545 commit r54455: URCV ssl/default/bits
Comment 3 Philipp Hahn univentionstaff 2016-06-27 17:59:32 CEST
(In reply to Michael Grandjean from comment #0)
> 1. key encryption algorithm
> I think we should default to '-aes256' instead of '-des3'. As far as I know
> there's yet nothing wrong with 3DES except that it is really slow compared
> to AES.

r70651 | Bug #37621 SSL: Make cipher for root CA configurable

> 3. key algorithm
Not yet supported; waiting for request by customer.


Package: univention-ssl
Version: 10.0.0-15.172.201606271746
Branch: ucs_4.1-0
Scope: errata4.1-2

r70655 | Bug #41230,Bug #38903,Bug #37621 SSL: YAML
 univention-ssl.yaml
Comment 4 Janek Walkenhorst univentionstaff 2016-07-15 12:20:56 CEST
Code review: OK
Tests: OK
Advisory: Added description of new default.
Comment 5 Janek Walkenhorst univentionstaff 2016-07-21 15:16:06 CEST
<http://errata.software-univention.de/ucs/4.1/213.html>