Re: [Ietf-dkim] Replay Attack vs. something else

2023-03-23 Thread Dave Crocker
On 3/23/2023 10:00 AM, Alessandro Vesely wrote: So, for example, anything depending on 're-signing' is not a DKIM Replay Attack. Right, except that re-signing can be (part of) a solution to the problem. The 'except' is not an 'except', because your point does not counter or qualify the

Re: [Ietf-dkim] Replay Attack vs. something else

2023-03-23 Thread Alessandro Vesely
On Thu 23/Mar/2023 01:21:55 +0100 Dave Crocker wrote: My understanding is that the term DKI MReplay Attack refers to a very specific scenario. The scenario is re-posting a message such that the original DKIM signature remains valid. Any other sort of re-posting does not qualify, under

Re: [Ietf-dkim] Replay Attack vs. something else

2023-03-22 Thread Michael Thomas
On 3/22/23 6:00 PM, Scott Kitterman wrote: That's my understanding, however that scenario also describes a normal mailing list if it doesn't make modifications that break an existing DKIM signature or any kind of forwarding with similar characteristics. The issue has little to do with the

Re: [Ietf-dkim] Replay Attack vs. something else

2023-03-22 Thread Dave Crocker
On Wednesday, March 22, 2023 8:21:55 PM EDT Dave Crocker wrote: The scenario is re-posting a message such that the original DKIM signature remains valid. Any other sort of re-posting does not qualify, under this definition. So, for example, anything depending on 're-signing' is not a

Re: [Ietf-dkim] Replay Attack vs. something else

2023-03-22 Thread Scott Kitterman
On Wednesday, March 22, 2023 8:21:55 PM EDT Dave Crocker wrote: > My understanding is that the term DKI MReplay Attack refers to a very > specific scenario. > > The scenario is re-posting a message such that the original DKIM > signature remains valid. > > Any other sort of re-posting

[Ietf-dkim] Replay Attack vs. something else

2023-03-22 Thread Dave Crocker
My understanding is that the term DKI MReplay Attack refers to a very specific scenario. The scenario is re-posting a message such that the original DKIM signature remains valid. Any other sort of re-posting does not qualify, under this definition. So, for example, anything depending on