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    • 2. 发明专利
    • Method, computer system and program for allowing or disallowing firmware upgrade
    • 方法,计算机系统和程序允许或不安装固件升级
    • JP2006190278A
    • 2006-07-20
    • JP2005367496
    • 2005-12-21
    • Lenovo Singapore Pte Ltdレノボ・シンガポール・プライベート・リミテッド
    • OKA KENJIKASAMATSU EITAROOISHI SHINJI
    • G06F11/00
    • G06F8/65
    • PROBLEM TO BE SOLVED: To facilitate determination of whether to allow or disallow firmware upgrades.
      SOLUTION: A first series of bits corresponds to compatibility information of firmware of a computer system. Each bit corresponds to an attribute of the firmware or the system, and is equal to one when the attribute denotes a potential incompatibility factor as to the attribute. A second series of bits corresponds to a firmware image with which the firmware is to be upgraded. Each bit indicates whether the firmware image is compatible with the attribute of a corresponding bit of the first series of bits, and is equal to one where the firmware image is compatible with the attribute. A logical AND operation is performed on the first and the second series of bits. Where the result of the logical AND operation is equal to the first series of bits, the firmware is allowed to be upgraded with the firmware image, and otherwise is disallowed.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了便于确定是否允许或不允许固件升级。 解决方案:第一系列位对应于计算机系统的固件的兼容性信息。 每个位对应于固件或系统的属性,并且当该属性表示关于该属性的潜在的不兼容因素时,该位等于1。 第二系列位对应于要升级固件的固件映像。 每个位指示固件图像是否与第一系列位的相应位的属性兼容,并且等于固件图像与该属性兼容的属性。 对第一和​​第二比特序列执行逻辑“与”运算。 在逻辑与运算结果等于第一系列位的情况下,允许使用固件映像升级固件,否则不允许。 版权所有(C)2006,JPO&NCIPI
    • 3. 发明专利
    • Method for authenticating physical presence based on tcg specification and computer
    • 基于TCG规范和计算机认证物理存在的方法
    • JP2009223729A
    • 2009-10-01
    • JP2008068862
    • 2008-03-18
    • Lenovo Singapore Pte Ltdレノボ・シンガポール・プライベート・リミテッド
    • TSUKAMOTO YASUMICHIKASAMATSU EITAROHAGIWARA MIKIOKUMAKI ATSUSHI
    • G06F21/20G06F1/00G06F21/22H04L9/32
    • PROBLEM TO BE SOLVED: To provide an authentication method for acknowledging physical presence only when an authentic owner operates a platform. SOLUTION: In this computer, a processor provided with a security chip 26 suitable for TCG (Trusted Computing Group) specifications, an organismic authentication unit 41 and a start button 101. A processor executes a CRTM (Core Root of Trust for Measurement) authentication code 121 to perform authentication. The depression of the start button determines whether the computer is subjected to a cold start from an S4 state or S5 state. The CRTM authentication code receives a result of organismic authentication performed by the organismic authentication unit 41. When the computer confirms that the cold start is performed and also that the organismic authentication is successful, a command indicating that physical presence is affirmative is sent to the security chip. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:仅在真实拥有者操作平台时提供用于确认身体存在的认证方法。 解决方案:在该计算机中,处理器配备有适合于TCG(可信计算组)规范的安全芯片26,有机认证单元41和启动按钮101.处理器执行CRTM(用于测量的信任的核心根 )认证码121进行认证。 按下开始按钮确定计算机是否经受从S4状态或S5状态的冷启动。 CRTM验证码接收由有机认证单元41执行的有机认证的结果。当计算机确认执行冷启动并且有机认证成功时,指示物理存在肯定的命令被发送到安全 芯片。 版权所有(C)2010,JPO&INPIT
    • 7. 发明专利
    • Computer protecting privilege level of system management mode
    • 计算机保护系统管理模式的特权级别
    • JP2011076134A
    • 2011-04-14
    • JP2009223662
    • 2009-09-29
    • Lenovo Singapore Pte Ltdレノボ・シンガポール・プライベート・リミテッド
    • ISHIDA NORIHITOINADA TOYOAKIKASAMATSU EITAROYOSHIYAMA NORITOSHI
    • G06F21/22G06F21/24
    • G06F21/572G06F21/74G06F2221/2105
    • PROBLEM TO BE SOLVED: To protect SMM (system management mode) of a computer, whereas obtaining of a privilege level of SMM poses a major security threat since an important code of the computer is rewritten and an OS cannot recognize which program uses the SMM privilege. SOLUTION: An SMM code is loaded into an SMRAM area of a main memory, and a video BIOS and a system BIOS are loaded into a general area thereof. A hash value of the video BIOS is preliminarily computed, and a vector address of INT10h is obtained and stored in the SMRAM area. When an authentication code calls the video BIOS by INT10h instruction, the hash value is computed in advance to verify the validity, and a vector table is rewritten with the preliminarily obtained vector address, whereby the valid video BIOS can be executed by the INT10h instruction. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了保护计算机的SMM(系统管理模式),而获得特权级别的SMM构成主要的安全威胁,因为计算机的重要代码被重写,并且操作系统无法识别哪个程序使用 SMM特权。 解决方案:将SMM代码加载到主存储器的SMRAM区域中,并且将视频BIOS和系统BIOS加载到其一般区域中。 预先计算视频BIOS的散列值,并获得INT10h的矢量地址并将其存储在SMRAM区域中。 当认证码通过INT10h指令调用视频BIOS时,提前计算散列值以验证有效性,并用预先获得的矢量地址重写矢量表,由此可以通过INT10h指令执行有效的视频BIOS。 版权所有(C)2011,JPO&INPIT