公开(公告)号：US20200044837A1

公开(公告)日：2020-02-06

申请号：US16050350

申请日：2018-07-31

Applicant: NXP B.V.

Inventor： Joppe Willem BOS ,  Rudi VERSLEGERS ,  Wilhelmus Petrus Adrianus Johannus MICHIELS

IPC: H04L9/08 ,  H04L9/06 ,  H04L9/14 ,  H04L9/00

Abstract: Various embodiments relate to a method of generating a shared secret for use in a symmetric cipher, including: receiving, by a processor, an encoded key Enc(K) and a white-box implementation of the symmetric cipher, where the encoded key Enc(K) is used in the white-box implementation; selecting, by the processor, homomorphic functions ⊙ and ⊗ and the values c1 and c3 such that Enc(K)⊙c1=Enc(K⊗c3); and transmitting, by the processor, ⊗ and c3 to another device.

公开(公告)号：US20190081797A1

公开(公告)日：2019-03-14

申请号：US15703597

申请日：2017-09-13

Applicant: NXP B.V.

Inventor： Joppe Willem BOS ,  Jan HOOGERBRUGGE ,  Wilhelmus Petrus Adrianus Johannus MICHIELS ,  Rudi VERSLEGERS

IPC: H04L9/32 ,  H04L9/00 ,  H04L9/30 ,  H04L29/06 ,  H04L9/06

CPC classification number: H04L9/3252 ,  H04L9/002 ,  H04L9/0643 ,  H04L9/3066 ,  H04L63/123 ,  H04L2209/16

Abstract: Various embodiments relate to a method for producing a digital signature using a white-box implementation of a cryptographic digital signature function, including: receiving a input message; hashing the input message; generating a nonce based upon the input message and the white-box implementation of the cryptographic digital signature function; and computing a digital signature of the input using the nonce.

公开(公告)号：US20200099525A1

公开(公告)日：2020-03-26

申请号：US16140029

申请日：2018-09-24

Applicant: NXP B.V.

Inventor： Joppe Willem BOS ,  Rudi VERSLEGERS ,  Wilhelmus Petrus Adrianus Johannus MICHIELS

IPC: H04L9/32 ,  G06F21/45

Abstract: A white-box system for authenticating a user-supplied password, including: a password database including a salt value and an authentication value for each user; a white-box implementation of a symmetric cipher configured to produce an encrypted value by encrypting the user-supplied password using the salt value associated with the user as an encoded secret key; and a comparator configured to compare the encrypted value with the authentication value associated with the user to verify the user-supplied password.

公开(公告)号：US20160352706A1

公开(公告)日：2016-12-01

申请号：US14724315

申请日：2015-05-28

Applicant: NXP B.V.

Inventor： Michael Michel Patrick PEETERS ,  Rudi VERSLEGERS ,  Dimitri WARNEZ

IPC: H04L29/06

CPC classification number: H04L63/061 ,  H04L9/0861 ,  H04L63/062

Abstract: Various embodiments relate to a method, device, and non-transitory medium including: determining a master key value for use in secure communications with a different device, wherein the master key value is used as a master key; deriving at least one session key using the master key; generating a new master key value based on the master key; deleting the current master key value; and using the new master key value as the master key.

Abstract translation: 各种实施例涉及一种方法，设备和非暂时介质，包括：确定用于与不同设备的安全通信中的主密钥值，其中所述主密钥值用作主密钥; 使用所述主密钥导出至少一个会话密钥; 基于主密钥生成新的主密钥值; 删除当前主键值; 并使用新的主密钥值作为主密钥。