On 01/03/2016 11:32, Yoav Nir wrote:
>> On 1 Mar 2016, at 6:56 AM, Martin Thomson <martin.thom...@gmail.com> wrote:
>>
>> On 1 March 2016 at 04:32, Joseph Salowey <j...@salowey.net> wrote:
>>> We make RSA-PSS mandatory to implement (MUST implement instead of MUST
>>> offer).   Clients can advertise support for PKCS-1.5 for backwards
>>> compatibility in the transition period.
>>
>>> From my perspective, this is fine.  I would like to say that we won't
>> ever support PKCS#1.5 for TLS 1.3, but I think that I would rather
>> have users on 1.3 with PKCS#1.5 than have them stuck on 1.2.
>>
>> It seems like others are taking the position that we should say "MUST
>> NOT use PKCS#1.5”.  
> 
> I’d go even further. I’d remove the rsapss(4) value from SignatureAlgorithm, 
> leaving just rsa(1), and say that in TLS 1.3 an RSA signature is PSS just as 
> it was PKCS#1.5 in TLS 1.2.

I strongly agree to Yoav's proposal!  No need to have both RSA(-PKCS)
and RSA-PSS numbers in SignatureAlgorithms.


hannes

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