Re: [PATCH 16/20] PKCS#7: Add an optional authenticated attribute to hold firmware name [ver #5]

[Andy Lutomirski]

On Mon, Jun 1, 2015 at 8:50 AM, David Howells <dhowells@xxxxxxxxxx> wrote:
> Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote:
>
>> > You can also fudge the signature (or a hash) by adding extra data to or
>> > modifying the data blob and by switching signature values between signature
>> > blobs.
>>
>> So there's another design error in PKCS#7?  Great!
>
> No.  This applies to *all* signatures where you're signing a hash.

What kind of fudging are you talking about here?  I don't see what
not-intentionally-signed message can be generically fudged to look
like it's signed.

--Andy
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