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Re: [TLS] 3GPP forbids support of MD5, SHA-1, non-AEAD, and non-PFS in TLS

Tony Rutkowski <trutkowski.netmagic@gmail.com> Sat, 07 March 2020 15:35 UTC

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From: Tony Rutkowski <trutkowski.netmagic@gmail.com>
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To: John Mattsson <john.mattsson=40ericsson.com@dmarc.ietf.org>, "TLS@ietf.org" <TLS@ietf.org>
References: <3643757B-1DE7-4240-98E1-5AA04B005603@ericsson.com>
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Date: Sat, 07 Mar 2020 10:35:39 -0500
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Subject: Re: [TLS] 3GPP forbids support of MD5, SHA-1, non-AEAD, and non-PFS in TLS
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One comment.  Perhaps some caution might be advised in light of the 
antitrust court order in /Trueposition v. Ericsson/. Ref. Order in Case 
No. 2:11-cv-4574, (U.S. E.D. Pa, 14 Jul 2014).

--amr

On 2020-03-06 7:02 PM, John Mattsson wrote:
> Hi,
>
> I am happy to report that 3GPP just took the decision to forbid support of MD5 and SHA-1, as well as all non-AEAD and non-PFS cipher suites in TLS. The changes apply to all Rel-16 3GPP systems that use TLS and DTLS, which are quite many.
>
> 3GPP had already mandaded support of TLS 1.3, forbidden support of TLS 1.1, and mandated minimum key lengths of 2048 for RSA/FFDH and 255 for ECC. 3GPP will likely mandate support of DTLS 1.3 soon after it has been published.
>
> I hope this inspire other organisations to do the same.
>
> The changes [2][3] were approved today and an updated complete version of the new 3GPP TLS profile can be found here [1]. Any comments or suggestions on the 3GPP TLS profile are very welcome.
>
> Cheers,
> John
>
>
> [1] https://github.com/EricssonResearch/CBOR-certificates/raw/master/3GPP%20TLS%20Profile%206%20march%202020.pdf
>
> [2] http://www.3gpp.org/ftp/TSG_SA/WG3_Security/TSGS3_98e/Docs/S3-200332.zip
>
> [3] https://www.3gpp.org/ftp/tsg_sa/WG3_Security/TSGS3_98e/Inbox/Drafts/draft_S3-200333-r1.doc
>
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