公开(公告)号：US20210240629A1

公开(公告)日：2021-08-05

申请号：US16782316

申请日：2020-02-05

Applicant: Arm Limited

Inventor： Tessil THOMAS ,  Jan-Peter LARSSON

IPC: G06F12/0891 ,  G06F12/0882 ,  G06F12/109 ,  G06F7/58 ,  G06F12/1027 ,  G06F11/07 ,  H04L9/08 ,  G06F12/1081 ,  G06F11/30 ,  G06F12/0873 ,  H04L9/06 ,  H04L9/32

Abstract: An apparatus is provided, connectable to a memory and one or more peripherals. The apparatus includes translation request circuitry to receive a translation request from one of the peripherals to translate an input address within an input domain to an output address within an output domain. Signing circuitry generates a signature of at least part of the output address using a private key. Translation response circuitry responds to the translation request by transmitting to the one of the peripherals a translation response, including the output address and the signature. Gateway circuitry receives access requests to the memory. Each of the access requests comprises a desired memory address in the output domain and a signature of the desired memory address. The gateway performs validation of the signature of the desired memory address using the private key and in response to the validation of a given access request failing, performs an error action.