公开(公告)号：US20240143197A1

公开(公告)日：2024-05-02

申请号：US18494641

申请日：2023-10-25

Applicant: Rambus Inc.

Inventor： Evan Lawrence Erickson ,  Michael Alexander Hamburg ,  Helena Handschuh ,  Mark Evan Marson

IPC: G06F3/06

CPC classification number: G06F3/0622 ,  G06F3/0608 ,  G06F3/064 ,  G06F3/0673

Abstract: Technologies for modal encryption are described. One memory buffer device includes a compression block and an in-line memory encryption (IME) block. The compression block can output compressed data. The IME block can encrypt uncompressed data at a first granularity and encrypt the compressed data at a second granularity, wherein the second granularity is larger than the first granularity.

公开(公告)号：US20230401311A1

公开(公告)日：2023-12-14

申请号：US18202517

申请日：2023-05-26

Applicant: Rambus Inc.

Inventor： Evan Lawrence Erickson ,  Helena Handschuh ,  Michael Alexander Hamburg ,  Mark Evan Marson ,  Michael Raymond Miller

IPC: G06F21/55 ,  G06F11/10

CPC classification number: G06F21/552 ,  G06F11/10

Abstract: Technologies for detecting an error using a message authentication code (MAC) associated with cache line data and differentiating the error as having been caused by an attack on memory or a MAC verification failure caused by an ECC escape. One memory buffer device includes an in-line memory encryption (IME) circuit to generate the MACs and verify the MACs. Upon a MAC verification failure, the memory buffer device can analyze at least one of the historical MAC verification failures or historical ECC-corrected errors over time to determine if the error is caused by an attack on memory.