[OpenTRV-dev] FAQ 11: is it safe to do without the CRC on secure frames?

[Jeremy Poulter]

Hi,

On the assumption that the security layer  digitally signs the message then
a CRC would be redundant as the digital signature would tell you the
content of the frame is as sent.

That being said a CRC may still be of value if outside the encryption to
enable quick filtering of corrupt frames before decryption and further
validation.

Jeremy
On 19 Dec 2015 14:29, "Damon Hart-Davis" <damon at opentrv.uk> wrote:

>
> http://www.earth.org.uk/OpenTRV/stds/network/20151203-DRAFT-SecureBasicFrame.txt
> _______________________________________________
> OpenTRV-dev mailing list
> OpenTRV-dev at lists.opentrv.org.uk
> http://lists.opentrv.org.uk/listinfo/opentrv-dev
>
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