Re: CAAM and IMA/EVM : caam_rsa_enc: DECO: desc idx 7: Protocol Size Error

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On 4/11/2018 5:21 AM, Fabio Estevam wrote:
> Hi Martin,
> 
> On Tue, Apr 10, 2018 at 7:01 PM, Martin Townsend
> <mtownsend1973@xxxxxxxxx> wrote:
> 
>> A hexdump of the signature reveals a 0x00 at the start
> 
> Yes, same is happening here on my mx6ul evk running linux-next:
> 
[snip]
> 
> However, the same kernel running on a mx6 board does not give the
> "Protocol Size Error":
> 
You'd want to make sure rsa is offloaded to caam in this case - check in
/proc/crypto.
IIRC there are some i.mx parts that don't have support for Public Key
acceleration (PKHA).

Horia




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