公开(公告)号：US09219612B2

公开(公告)日：2015-12-22

申请号：US13380961

申请日：2010-06-25

Applicant: Matthew Robshaw ,  Henri Gilbert

Inventor： Matthew Robshaw ,  Henri Gilbert

IPC: G06F7/04 ,  H04L9/32 ,  H04L9/30

CPC classification number: H04L9/3273 ,  H04L9/3013 ,  H04L9/3066 ,  H04L9/3218 ,  H04L63/0869 ,  H04L2209/805 ,  H04W4/00 ,  H04W12/06

Abstract: A method and apparatus are provided for mutually authenticating a reader and a radio tag. The method includes: a step of the tag sending data to the reader, the data enabling an index to be determined for identifying an authentication coupon of the reader, the index being selected by the tag; a step of the reader obtaining the coupon from the determined index and of the reader sending the coupon to the tag; a step of the tag obtaining an authentication value from the selected index and of the tag verifying that the coupon received from the reader corresponds to the authentication value that is obtained, if the verification is positive, then a step of finalizing the authentication of the tag by the reader; and if the verification is negative, interrupting the mutual authentication method.

Abstract translation: 提供了一种用于相互认证读取器和无线电标签的方法和装置。 该方法包括：标签向读取器发送数据的步骤，使得能够确定用于识别读取器的认证优惠券的索引的数据，由标签选择的索引; 读者从确定的索引获取优惠券的步骤，以及将优惠券发送给标签的读者; 标签从所选择的索引获得认证值的步骤，以及验证从阅读器接收到的优惠券对应于所获得的认证值的标签的步骤，如果验证是肯定的，则完成标签的认证的步骤 由读者; 并且如果验证是否定的，则中断相互认证方法。

公开(公告)号：US20120200386A1

公开(公告)日：2012-08-09

申请号：US13380961

申请日：2010-06-25

Applicant: Matthew Robshaw ,  Henri Gilbert

Inventor： Matthew Robshaw ,  Henri Gilbert

IPC: G06F7/04

CPC classification number: H04L9/3273 ,  H04L9/3013 ,  H04L9/3066 ,  H04L9/3218 ,  H04L63/0869 ,  H04L2209/805 ,  H04W4/00 ,  H04W12/06

Abstract: A method and apparatus are provided for mutually authenticating a reader and a radio tag. The method includes: a step of the tag sending data to the reader, the data enabling an index to be determined for identifying an authentication coupon of the reader, the index being selected by the tag; a step of the reader obtaining the coupon from the determined index and of the reader sending the coupon to the tag; a step of the tag obtaining an authentication value from the selected index and of the tag verifying that the coupon received from the reader corresponds to the authentication value that is obtained, if the verification is positive, then a step of finalizing the authentication of the tag by the reader; and if the verification is negative, interrupting the mutual authentication method.

Abstract translation: 提供了一种用于相互认证读取器和无线电标签的方法和装置。 该方法包括：标签向读取器发送数据的步骤，使得能够确定用于识别读取器的认证优惠券的索引的数据，由标签选择的索引; 读者从确定的索引获取优惠券的步骤，以及将优惠券发送给标签的读者; 标签从所选择的索引获得认证值的步骤，以及验证从阅读器接收到的优惠券对应于所获得的认证值的标签的步骤，如果验证是肯定的，则完成标签的认证的步骤 由读者; 如果验证是否定的，则中断相互认证方式。

公开(公告)号：US20110249815A1

公开(公告)日：2011-10-13

申请号：US13139637

申请日：2009-12-16

Applicant: Matthew Robshaw ,  Henri Gilbert

Inventor： Matthew Robshaw ,  Henri Gilbert

IPC: H04L9/28

CPC classification number: H04L9/0637 ,  H04L2209/805

Abstract: A method is provided of implementing a block cipher algorithm by a device storing a fixed initialization datum, comprising, before execution of a first iteration of the algorithm in the course of a session, a step of determining a modified initialization datum by way of a determined function supplied as input with the fixed initialization datum and a state value specific to the session, the state value being stored in the device, said modified initialization datum being usable to implement the first iteration of the algorithm.

Abstract translation: 提供了一种通过存储固定的初始化数据的设备实现块密码算法的方法，包括：在会话过程中执行算法的第一迭代之前，通过确定的确定的修改的初始化数据的步骤 功能作为输入提供固定的初始化数据和特定于会话的状态值，状态值被存储在设备中，所述修改的初始化数据可用于实现算法的第一次迭代。

公开(公告)号：US08458474B2

公开(公告)日：2013-06-04

申请号：US12600304

申请日：2008-05-21

Applicant: Matthew Robshaw ,  Henri Gilbert

Inventor： Matthew Robshaw ,  Henri Gilbert

IPC: H06F15/16

CPC classification number: H04L9/3271 ,  H04L2209/805

Abstract: A method of authenticating an entity by a verification entity, said entities sharing a pair of secret keys X and Y which are n×m (n, m>i) binary matrices. The method may be applied to cryptographic protocols for authenticating electronic chips at a very low cost.

Abstract translation: 一种由验证实体验证实体的方法，所述实体共享一对秘密密钥X和Y，它们是n×m（n，m> i）个二进制矩阵。 该方法可以以非常低的成本应用于用于认证电子芯片的密码协议。

公开(公告)号：US20100228986A1

公开(公告)日：2010-09-09

申请号：US12741638

申请日：2008-11-21

Applicant: Matthew Robshaw ,  Henri Gilbert

Inventor： Matthew Robshaw ,  Henri Gilbert

IPC: G06F21/00 ,  G06F7/04

CPC classification number: H04L9/3271 ,  G06F21/10 ,  G06F21/445 ,  G06F2221/2103 ,  G06F2221/2129 ,  G11B20/00086 ,  G11B20/00876 ,  H04L9/0827 ,  H04L2209/603 ,  H04L2209/805

Abstract: An authentication method of a prover device by a verifier device by means of cryptographic coupons is provided for, wherein a coupon comprises, on one hand, a pseudo-random number ri, where i is an index for labeling the coupon, and, on the other hand, a reduced-coupon xi such that xi=ƒ(ri), where ƒ is a predetermined one-way function, comprising at least the following steps: the verifier device sends a challenge consisting of a random value c to the prover device; the prover device sends to the verifier device a response y calculated by using a pseudo-random number ri, said challenge c, and a secret key s belonging to the prover device; and the verifier device checks the validity of said response y based on the challenge c, the reduced-coupon xi corresponding to said pseudo-random number ri, and a public key V corresponding to said secret key s. According to the invention, the verifier device receives said reduced-coupon xi from a source external to the prover device.

Abstract translation: 提供了一种通过加密优惠券的验证器装置的验证器装置的认证方法，其中优惠券一方面包括伪随机数ri，其中i是用于标记优惠券的索引，并且在 另一方面，减价券xi使得xi =ƒ（ri），其中ƒ是预定的单向功能，至少包括以下步骤：验证者设备将由随机值c组成的挑战发送到证明者设备 ; 证明器装置通过使用伪随机数ri，所述挑战c和属于证明器装置的秘密密钥s向验证装置发送响应y; 并且验证器设备基于挑战c，对应于所述伪随机数ri的减价券xi和对应于所述秘密密钥s的公钥V来检查所述响应y的有效性。 根据本发明，验证器装置从证明器装置外部的源接收所述减价券xi。