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    Dynamic rowhammer management
    1.
    发明授权
    Dynamic rowhammer management 有权

    公开(公告)号：US12211543B2

    公开(公告)日：2025-01-28

    申请号：US17940430

    申请日：2022-09-08

    Applicant: QUALCOMM INCORPORATED

    Inventor： Victor Van Der Veen ,  Pankaj Deshmukh ,  Behnam Dashtipour ,  David Hartley

    IPC: G11C11/4078 ,  G06F13/16 ,  G11C7/10 ,  G11C11/406

    Abstract: Mitigating or managing an effect known as “rowhammer” upon a DRAM device may include a memory controller receiving an activation count threshold value from the DRAM device. The memory controller may detect row activation commands directed to the DRAM device and count the number of the row activation commands. The memory controller may send a mitigative refresh command to the DRAM device based on the result of comparing the counted number of row activation commands with the received activation count threshold value.

    Secure entry and exit for software modules protected by controlled encryption key management
    4.
    发明授权
    Secure entry and exit for software modules protected by controlled encryption key management 有权

    公开(公告)号：US10235303B2

    公开(公告)日：2019-03-19

    申请号：US15232723

    申请日：2016-08-09

    Applicant: QUALCOMM Incorporated

    Inventor： David Hartley ,  Roberto Avanzi ,  Rosario Cammarota

    IPC: G06F12/14 ,  G06F21/12 ,  G06F21/62 ,  H04L29/06 ,  G06F21/14 ,  G06F21/74

    Abstract: Techniques for protecting software in a computing device are provided. A method according to these techniques includes receiving a request from a non-secure software module to execute an instruction of a secure software module comprising encrypted program code, determining whether the instruction comprises an instruction associated with a controlled point of entry to the secure software module accessible outside of the secure software module, executing one or more instructions of the secure software module responsive to the instruction comprising an instruction associated with the controlled point of entry to the secure software module, and controlling exit from the secure software module to return execution to the non-secure software module.

    Separation of software modules by controlled encryption key management
    6.
    发明授权
    Separation of software modules by controlled encryption key management 有权

    公开(公告)号：US10142303B2

    公开(公告)日：2018-11-27

    申请号：US15053892

    申请日：2016-02-25

    Applicant: QUALCOMM Incorporated

    Inventor： Roberto Avanzi ,  David Hartley ,  Rosario Cammarota

    IPC: H04L29/06 ,  G06F12/14 ,  G06F21/62 ,  G06F21/78 ,  G06F11/07 ,  G06F11/16 ,  G06F11/30

    Abstract: In an aspect, a method for protecting software includes obtaining a payload including at least one of instructions or data, establishing a realm in a memory device, encrypting the payload based on an ephemeral encryption key (EEK) associated with the realm, and storing the encrypted payload in the realm of the memory device. In another aspect, a method for protecting software includes receiving a memory transaction associated with the memory device, the memory transaction including at least a realm identifier (RID) and a realm indicator bit, obtaining the EEK associated with the RID when the RID indicates the realm and when the realm indicator bit is enabled, decrypting an instruction and/or data retrieved from the realm based on the EEK when the memory transaction is a read transaction, and encrypting second data for storage in the realm based on the EEK when the memory transaction is a write transaction.

    SECURE HANDLING OF MEMORY CACHES AND CACHED SOFTWARE MODULE IDENTITIES FOR A METHOD TO ISOLATE SOFTWARE MODULES BY MEANS OF CONTROLLED ENCRYPTION KEY MANAGEMENT
    7.
    发明申请
    SECURE HANDLING OF MEMORY CACHES AND CACHED SOFTWARE MODULE IDENTITIES FOR A METHOD TO ISOLATE SOFTWARE MODULES BY MEANS OF CONTROLLED ENCRYPTION KEY MANAGEMENT 审中-公开
    通过控制加密方式分离软件模块的方法来安全地处理内存缓存和缓存软件模块标识

    公开(公告)号：US20170010982A1

    公开(公告)日：2017-01-12

    申请号：US15070947

    申请日：2016-03-15

    Applicant: QUALCOMM Incorporated

    Inventor： Roberto Avanzi ,  David Hartley ,  Rosario Cammarota

    IPC: G06F12/14 ,  G06F21/60 ,  G06F12/08

    CPC classification number: G06F12/1408 ,  G06F12/0802 ,  G06F12/1466 ,  G06F21/14 ,  G06F21/602 ,  G06F21/79

    Abstract: In an aspect, a cache memory device receives a request to read an instruction or data associated with a memory device. The request includes a first realm identifier and a realm indicator bit, where the first realm identifier enables identification of a realm that includes one or more selected regions in the memory device. The cache memory device determines whether the first realm identifier matches a second realm identifier in a cache tag when the instruction or data is stored in the cache memory device, where the instruction or data stored in the cache memory device has been decrypted based on an ephemeral encryption key associated with the second realm identifier when the first realm identifier indicates the realm and when the realm indicator bit is enabled. The cache memory device transmits the instruction or data when the first realm identifier matches the second realm identifier.

    Abstract translation: 在一方面，高速缓冲存储器设备接收读取与存储器设备相关联的指令或数据的请求。 该请求包括第一领域标识符和领域指示符位，其中第一领域标识符使得能够识别包括存储器设备中的一个或多个所选区域的领域。 当指令或数据存储在高速缓冲存储器件中时，高速缓存存储器件确定第一区标识符是否与高速缓存标签中的第二区标识符匹配，其中存储在高速缓冲存储器件中的指令或数据已经基于短暂的解密 当第一领域标识符指示领域以及当领域指示符位被启用时与第二领域标识符相关联的加密密钥。 当第一领域标识符与第二领域标识符匹配时，高速缓冲存储器设备发送指令或数据。

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