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    • 4. 发明申请
    • CRYTOGRAPHICALLY TRANSFORMING DATA TEXT
    • CRYTOGRAPHICALLY变换数据文本
    • US20110311041A1
    • 2011-12-22
    • US12965689
    • 2010-12-10
    • Bruce Murray
    • Bruce Murray
    • H04L9/28
    • H04L9/002G06F7/723G06F2207/7219H04L9/302
    • In the field of cryptography there is a need to reduce the time taken to cryptographically transform data text while maintaining the low memory requirements associated with conventional square-and-multiply modular exponentiation.A method of cryptographically transforming data text c comprises the step of generating an integer representation m of the data text c according to m=cd where d is a predetermined exponent. The step of generating the integer representation m includes generating a sequence of intermediate numbers, each intermediate number being based on two or fewer earlier numbers in the sequence. Generating a sequence of intermediate numbers includes retrieving a pre-stored instruction to determine which two or fewer earlier numbers in the sequence a given intermediate number is based on and the functional manipulation of the or each earlier number required to generate the given intermediate number.
    • 在密码学领域中,需要减少加密地转换数据文本所需的时间,同时保持与传统的平方和乘法模幂相关联的低存储器要求。 密码变换数据文本c的方法包括根据m = cd生成数据文本c的整数表示m的步骤,其中d是预定指数。 生成整数表示m的步骤包括生成中间数字序列,每个中间数字基于序列中两个或更少的较早的数字。 生成中间数字序列包括检索预先存储的指令以确定给定中间数字中的序列中的两个或更少个较早的数字,以及生成给定中间数所需的或每个较早的数字的功能操作。
    • 7. 发明授权
    • Distributed processing in a cryptography acceleration chip
    • 密码加速芯片中的分布式处理
    • US07600131B1
    • 2009-10-06
    • US09610798
    • 2000-07-06
    • Suresh KrishnaChristopher OwenDerrick C. LinJoseph J. TardoPatrick Law
    • Suresh KrishnaChristopher OwenDerrick C. LinJoseph J. TardoPatrick Law
    • H04L9/00
    • H04L63/0428G06F9/3879G06F21/604G06F21/72G06F2207/7219H04L63/0485H04L63/164
    • Provided is an architecture for a cryptography accelerator chip that allows significant performance improvements over previous prior art designs. In various embodiments, the architecture enables parallel processing of packets through a plurality of cryptography engines and includes a classification engine configured to efficiently process encryption/decryption of data packets. Cryptography acceleration chips in accordance may be incorporated on network line cards or service modules and used in applications as diverse as connecting a single computer to a WAN, to large corporate networks, to networks servicing wide geographic areas (e.g., cities). The present invention provides improved performance over the prior art designs, with much reduced local memory requirements, in some cases requiring no additional external memory. In some embodiments, the present invention enables sustained full duplex Gigabit rate security processing of IPSec protocol data packets.
    • 提供了一种用于加密加速器芯片的架构,其允许比先前的现有技术设计显着的性能改进。 在各种实施例中,架构能够通过多个密码引擎并行处理分组,并且包括被配置为有效地处理数据分组的加密/解密的分类引擎。 密码学加速芯片可以被合并在网络线卡或服务模块上,并用于将单个计算机连接到WAN,大型企业网络以及服务于广泛地理区域(例如,城市)的网络的应用。 本发明提供了相对于现有技术设计的改进的性能,其中局部存储器要求大大降低,在某些情况下不需要额外的外部存储器。 在一些实施例中,本发明实现IPSec协议数据分组的持续全双工千兆比特速率安全处理。
    • 10. 发明授权
    • Device and method for making secure an integrated circuit
    • 用于安全集成电路的装置和方法
    • US07069593B1
    • 2006-06-27
    • US09830378
    • 1999-10-28
    • Eric Gerbault
    • Eric Gerbault
    • G06F7/04G06F17/30G06K9/00H04K1/00H04L9/00
    • G07F7/1008G06F21/556G06F21/755G06F2207/7219G06Q20/341G07F7/082
    • The present invention relates to an integrated circuit device containing a memory area, which comprises, on the one hand, a data memory and a program memory, and on the other hand, a program having N code blocks Bi (i=1, . . . , N). It also relates to a method for making such a device secure. The present invention is characterized in that the memory area has M replicas Cj (j=1, . . . , M) of x program code blocks Bi (x=1, . . . , N), which replicas reside at different addresses in said memory area, and in that said device has selection means for randomly selecting one replica Cj of at least one of the x blocks Bi, as a block replica to be used when executing said program. In particular, the present invention can be applied to smart cards.
    • 本发明涉及一种包含存储区域的集成电路装置,其一方面包括数据存储器和程序存储器,另一方面,具有N个码块Bi(i = 1,..., 。,N)。 它还涉及一种使这种装置安全的方法。 本发明的特征在于,存储区域具有x个程序代码块Bi(x = 1,...,N)的M个副本C j(j = 1,...,M),该副本位于不同的地址 所述存储区域,并且所述设备具有选择装置,用于随机选择x块Bi中的至少一个的一个副本Cj作为在执行所述程序时要使用的块副本。 特别地,本发明可以应用于智能卡。