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