Re: [quicwg/base-drafts] Reference "Nonces are Noticed" in the header protection analysis section (#3031)

Christopher Wood <notifications@github.com> Sat, 14 September 2019 13:21 UTC

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Subject: Re: [quicwg/base-drafts] Reference "Nonces are Noticed" in the header protection analysis section (#3031)
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chris-wood commented on this pull request.



>  
 ~~~
 protected_field = field XOR PRF(hp_key, sample)
 ~~~
 
-This construction is secure against chosen plaintext attacks (IND-CPA) {{IMC}}.
+Assuming hp_key is distinct from the packet protection key, this construction
+(HN1) achieves AE2 security and therefore guarantees privacy of `field`, the

It’s defined in the referenced paper. I thought it best to simply point readers in that direction if they want the details, rather try and pull it out here. (We didn’t previously define IND-CPA security, for example.)

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