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    Specialized circuitry for cryptographic authentication and other purposes
    12.
    发明授权
    Specialized circuitry for cryptographic authentication and other purposes 有权
    用于加密认证和其他用途的专用电路

    公开(公告)号：US09569628B2

    公开(公告)日：2017-02-14

    申请号：US11387401

    申请日：2006-03-23

    申请人： Paul C. Kocher ,  Benjamin C. Jun ,  Joshua M. Jaffe

    发明人： Paul C. Kocher ,  Benjamin C. Jun ,  Joshua M. Jaffe

    IPC分类号： G06F11/30 ,  G06F21/60 ,  G06F21/10 ,  G06F21/72 ,  G06Q20/36 ,  H04L9/08

    CPC分类号： G06F21/602 ,  G06F21/10 ,  G06F21/72 ,  G06F2211/007 ,  G06F2221/0753 ,  G06F2221/2101 ,  G06Q20/367 ,  H04L9/0833 ,  H04L2209/127 ,  H04L2209/603

    摘要： To prevent piracy, audiovisual content is encrypted prior to transmission to consumers. A low-cost, high-security cryptographic rights module (such as a smartcard) enables devices such as players/displays to decode such content. Security-critical functions may be performed by the cryptographic module in a manner that allows security compromises to be addressed by upgrading or replacing cryptographic modules, thereby avoiding the need to replace or modify other (typically much higher-cost) components. The security module contains cryptographic keys, which it uses to process rights enablement messages (REMs) and key derivation messages (KDMs). From a REM and KDM, the security module derives key data corresponding to content, uses public key and/or symmetric cryptography to re-encrypt the derived key data for another device, and provides the re-encrypted key data to the decoding device. The decoding device then uses cryptographic values derived from the re-encrypted key data to decrypt the content.

    摘要翻译： 为了防止盗版，视听内容在传输给消费者之前被加密。 低成本，高安全性的加密权限模块（如智能卡）可使诸如播放器/显示器等设备解码此类内容。 安全关键功能可以由加密模块以允许通过升级或替换加密模块来解决安全危害的方式来执行，从而避免需要替换或修改其他（通常成本更高的成本）组件。 安全模块包含加密密钥，用于处理权限启用消息（REM）和密钥导出消息（KDM）。 从REM和KDM，安全模块导出与内容对应的密钥数据，使用公开密钥和/或对称密码来对另一设备的导出密钥数据进行重新加密，并将重新加密的密钥数据提供给解码设备。 解码装置然后使用从重新加密的密钥数据导出的加密值来解密内容。

    Using unpredictable information to minimize leakage from smartcards and other cryptosystems
    14.
    发明授权
    Using unpredictable information to minimize leakage from smartcards and other cryptosystems 有权
    使用不可预测的信息来最小化智能卡和其他密码系统的泄漏

    公开(公告)号：US06327661B1

    公开(公告)日：2001-12-04

    申请号：US09326222

    申请日：1999-06-03

    申请人： Paul C. Kocher ,  Joshua M. Jaffe ,  Benjamin C. Jun

    发明人： Paul C. Kocher ,  Joshua M. Jaffe ,  Benjamin C. Jun

    IPC分类号： G06F1214

    CPC分类号： H04L63/1441 ,  G06F21/755 ,  G06F2207/7219 ,  G06K19/073 ,  G06K19/07363 ,  G06Q20/341 ,  G07F7/082 ,  G07F7/1008 ,  H04K3/825 ,  H04L9/003 ,  H04L9/004 ,  H04L9/0625 ,  H04L2209/08 ,  H04L2209/12 ,  H04L2209/16

    摘要： Methods and apparatuses are disclosed for securing cryptosystems against external monitoring attacks by reducing the amount (and signal to noise ratio) of useful information leaked during processing. This is generally accomplished by incorporating unpredictable information into the cryptographic processing. Various embodiments of the invention use techniques such as reduction of signal to noise ratios, random noise generation, clock skipping, and introducing entropy into the order of processing operations or the execution path. The techniques may be implemented in hardware or software, may use a combination of digital and analog techniques, and may be deployed in a variety of cryptographic devices.

    摘要翻译： 公开了用于通过减少在处理期间泄露的有用信息的量（和信噪比）来保护密码系统免受外部监视攻击的方法和装置。 这通常通过将不可预测的信息合并到密码处理中来实现。 本发明的各种实施例使用诸如降低信噪比，随机噪声产生，时钟跳跃和将熵引入处理操作或执行路径的顺序的技术。 这些技术可以在硬件或软件中实现，可以使用数字和模拟技术的组合，并且可以部署在各种加密设备中。

    Des and other cryptographic, processes with leak minimization for smartcards and other cryptosystems
    15.
    发明授权
    Des and other cryptographic, processes with leak minimization for smartcards and other cryptosystems 有权
    Des和其他加密过程与漏洞最小化智能卡和其他密码系统

    公开(公告)号：US06278783B1

    公开(公告)日：2001-08-21

    申请号：US09324798

    申请日：1999-06-03

    申请人： Paul C. Kocher ,  Joshua M. Jaffe ,  Benjamin C. Jun

    发明人： Paul C. Kocher ,  Joshua M. Jaffe ,  Benjamin C. Jun

    IPC分类号： H04K102

    CPC分类号： H04L9/0625 ,  G06F21/556 ,  G06F21/602 ,  G06F21/755 ,  G06F2207/7219 ,  H04L9/003 ,  H04L2209/046 ,  H04L2209/08 ,  H04L2209/127

    摘要： Methods and apparatuses are disclosed for improving DES and other cryptographic protocols against external monitoring attacks by reducing the amount (and signal-to-noise ratio) of useful information leaked during processing. An improved DES implementation of the invention instead uses two 56-bit keys (K1 and K2) and two 64-bit plaintext messages (M1 and M2), each associated with a permutation (i.e., K1P, K2P and M1P, M2P) such that K1P {K1} XOR K2P {K2} equals the “standard” DES key K, and M1P {M1} XOR M2P {M2} equals the “standard” message. During operation of the device, the tables are preferably periodically updated, by introducing fresh entropy into the tables faster than information leaks out, so that attackers will not be able to obtain the table contents by analysis of measurements. The technique is implementable in cryptographic smartcards, tamper resistant chips, and secure processing systems of all kinds.

    摘要翻译： 公开了用于通过减少在处理期间泄露的有用信息的量（和信噪比）来改善DES和其他加密协议以防外部监视攻击的方法和装置。 本发明的改进的DES实施方案改为使用两个56位密钥（K1和K2）和两个64位明文消息（M1和M2），每个与排列相关联（即，K1P，K2P和M1P，M2P），使得 K1P {K1} XOR K2P {K2}等于“标准”DES密钥K，M1P {M1} XOR M2P {M2}等于“标准”消息。 在设备的操作期间，优选地通过将新鲜的熵引入到表中比信息泄漏出来更周期地更新表，使得攻击者将不能通过分析测量获得表内容。 该技术可在加密智能卡，防篡改芯片和各种安全处理系统中实现。

    Prevention of side channel attacks against block cipher implementations and other cryptographic systems
    16.
    发明授权
    Prevention of side channel attacks against block cipher implementations and other cryptographic systems 有权
    防止针对块密码实现和其他加密系统的侧信道攻击

    公开(公告)号：US07787620B2

    公开(公告)日：2010-08-31

    申请号：US11252898

    申请日：2005-10-18

    申请人： Paul C. Kocher ,  Joshua M. Jaffe ,  Benjamin C. Jun

    发明人： Paul C. Kocher ,  Joshua M. Jaffe ,  Benjamin C. Jun

    IPC分类号： H04L9/22

    CPC分类号： H04L9/0625 ,  G06F21/556 ,  G06F21/602 ,  G06F21/755 ,  G06F2207/7219 ,  H04L9/003 ,  H04L2209/046 ,  H04L2209/08 ,  H04L2209/127

    摘要： Methods and apparatuses are disclosed for improving DES and other cryptographic protocols against external monitoring attacks by reducing the amount (and signal-to-noise ratio) of useful information leaked during processing. An improved DES implementation of the invention instead uses two 56-bit keys (K1 and K2) and two 64-bit plaintext messages (M1 and M2), each associated with a permutation (i.e., K1P, K2P and M1P, M2P) such that K1P{K1} XOR K2P{K2} equals the “standard” DES key K, and M1P{M1} XOR M2P{M2} equals the “standard” message. During operation of the device, the tables are preferably periodically updated, by introducing fresh entropy into the tables faster than information leaks out, so that attackers will not be able to obtain the table contents by analysis of measurements. The technique is implementable in cryptographic smartcards, tamper resistant chips, and secure processing systems of all kinds.

    摘要翻译： 公开了用于通过减少在处理期间泄露的有用信息的量（和信噪比）来改善DES和其他加密协议以防外部监视攻击的方法和装置。 本发明的改进的DES实施方案改为使用两个56位密钥（K1和K2）和两个64位明文消息（M1和M2），每个与排列相关联（即，K1P，K2P和M1P，M2P），使得 K1P {K1} XOR K2P {K2}等于“标准”DES密钥K，M1P {M1} XOR M2P {M2}等于“标准”消息。 在设备的操作期间，优选地通过将新鲜的熵引入到表中比信息泄漏出来更周期地更新表，使得攻击者将不能通过分析测量获得表内容。 该技术可在加密智能卡，防篡改芯片和各种安全处理系统中实现。

    Cryptographic computation using masking to prevent differential power analysis and other attacks
    17.
    发明授权
    Cryptographic computation using masking to prevent differential power analysis and other attacks 有权
    使用掩码进行密码计算，以防止差分功率分析和其他攻击

    公开(公告)号：US07668310B2

    公开(公告)日：2010-02-23

    申请号：US09930836

    申请日：2001-08-15

    申请人： Paul C. Kocher ,  Joshua M. Jaffe ,  Benjamin C. Jun

    发明人： Paul C. Kocher ,  Joshua M. Jaffe ,  Benjamin C. Jun

    IPC分类号： H04L9/22

    CPC分类号： H04L9/0625 ,  G06F21/556 ,  G06F21/602 ,  G06F21/755 ,  G06F2207/7219 ,  H04L9/003 ,  H04L2209/046 ,  H04L2209/08 ,  H04L2209/127

    摘要： Methods and apparatuses are disclosed for improving DES and other cryptographic protocols against external monitoring attacks by reducing the amount (and signal-to-noise ratio) of useful information leaked during processing. An improved DES implementation of the invention instead uses two 56-bit keys (K1 and K2) and two 64-bit plaintext messages (M1 and M2), each associated with a permutation (i.e., K1P, K2P and M1P, M2P) such that K1P{K1} XOR K2P {K2} equals the “standard” DES key K, and M1P{M1} XOR M2P{M2} equals the “standard” message. During operation of the device, the tables are preferably periodically updated, by introducing fresh entropy into the tables faster than information leaks out, so that attackers will not be able to obtain the table contents by analysis of measurements. The technique is implementable in cryptographic smartcards, tamper resistant chips, and secure processing systems of all kinds.

    摘要翻译： 公开了用于通过减少在处理期间泄露的有用信息的量（和信噪比）来改善DES和其他加密协议以防外部监视攻击的方法和装置。 本发明的改进的DES实施方案改为使用两个56位密钥（K1和K2）和两个64位明文消息（M1和M2），每个与排列相关联（即，K1P，K2P和M1P，M2P），使得 K1P {K1} XOR K2P {K2}等于“标准”DES密钥K，M1P {M1} XOR M2P {M2}等于“标准”消息。 在设备的操作期间，优选地通过将新鲜的熵引入到表中比信息泄漏出来更周期地更新表，使得攻击者将不能通过分析测量获得表内容。 该技术可在加密智能卡，防篡改芯片和各种安全处理系统中实现。

    Using smartcards or other cryptographic modules for enabling connected devices to access encrypted audio and visual content
    20.
    发明授权
    Using smartcards or other cryptographic modules for enabling connected devices to access encrypted audio and visual content 有权
    使用智能卡或其他加密模块，使连接的设备能够访问加密的音频和视频内容

    公开(公告)号：US07039816B2

    公开(公告)日：2006-05-02

    申请号：US10695256

    申请日：2003-10-27

    申请人： Paul C. Kocher ,  Joshua M. Jaffe ,  Benjamin C. Jun

    发明人： Paul C. Kocher ,  Joshua M. Jaffe ,  Benjamin C. Jun

    IPC分类号： H04N7/167 ,  H04L9/30

    CPC分类号： G06F21/602 ,  G06F21/10 ,  G06F21/72 ,  G06F2211/007 ,  G06F2221/0753 ,  G06F2221/2101 ,  G06Q20/367 ,  H04L9/0833 ,  H04L2209/127 ,  H04L2209/603

    摘要： To prevent piracy, audiovisual content is encrypted prior to transmission to consumers. A low-cost, high-security cryptographic rights module (such as a smartcard) enables devices such as players/displays to decode such content. Security-critical functions may be performed by the cryptographic module in a manner that allows security compromises to be addressed by upgrading or replacing cryptographic modules, thereby avoiding the need to replace or modify other (typically much higher-cost) components. The security module contains cryptographic keys, which it uses to process rights enablement messages (REMs) and key derivation messages (KDMs). From a REM and KDM, the security module derives key data corresponding to content, uses public key and/or symmetric cryptography to re-encrypt the derived key data for another device, and provides the re-encrypted key data to the decoding device. The decoding device then uses cryptographic values derived from the re-encrypted key data to decrypt the content.

    摘要翻译： 为了防止盗版，视听内容在传输给消费者之前被加密。 低成本，高安全性的加密权限模块（如智能卡）可使诸如播放器/显示器等设备解码此类内容。 安全关键功能可以由加密模块以允许通过升级或替换加密模块来解决安全危害的方式来执行，从而避免需要替换或修改其他（通常成本更高的成本）组件。 安全模块包含加密密钥，用于处理权限启用消息（REM）和密钥导出消息（KDM）。 从REM和KDM，安全模块导出与内容对应的密钥数据，使用公开密钥和/或对称密码来对另一设备的导出密钥数据进行重新加密，并将重新加密的密钥数据提供给解码设备。 解码装置然后使用从重新加密的密钥数据导出的加密值来解密内容。