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[radext] Re: Selfie Attack on TLS-PSK

Alan DeKok <aland@deployingradius.com> Wed, 24 July 2024 22:00 UTC

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From: Alan DeKok <aland@deployingradius.com>
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Subject: [radext] Re: Selfie Attack on TLS-PSK
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On Jul 24, 2024, at 1:37 PM, Margaret Cullen <mrcullen42@gmail.com> wrote:
> 
> On a separate but related note…. 
> 
> I came across this attack while reading about TLS mutual authentication:
> 
> https://eprint.iacr.org/2019/347.pdf
> 
  Nice!  And :(
 
> Is this something we should consider before we recommend the use of TLS-PSK with TLS 1.3? Or has this issues already been addressed?

  This is discussed in RFC 9527:

  https://datatracker.ietf.org/doc/html/rfc9257#section-8

  I'll have to do a deeper dive to see how this affects the TLS-PSK document.

  Alan DeKok.

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