Invention Grant
- Patent Title: Cryptographic system with modular randomization of exponentiation
- Patent Title (中): 加权系统,采用模幂随机化求幂
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Application No.: US11852644Application Date: 2007-09-10
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Publication No.: US08670557B2Publication Date: 2014-03-11
- Inventor: Elena Trichina , Helena Handschuh , Arnaud Boscher
- Applicant: Elena Trichina , Helena Handschuh , Arnaud Boscher
- Applicant Address: US CA Sunnyvale
- Assignee: Spansion LLC
- Current Assignee: Spansion LLC
- Current Assignee Address: US CA Sunnyvale
- Agency: Turocy & Watson, LLP
- Main IPC: H04K1/00
- IPC: H04K1/00

Abstract:
Systems and/or methods that facilitate secure electronic communication of data are presented. A cryptographic component facilitates securing data associated with messages in accordance with a cryptographic protocol. The cryptographic component includes a randomized exponentiation component that facilitates decryption of data and generation of digital signatures by exponentiating exponents associated with messages. An exponent is divided into more than one subexponent at an exponent bit that corresponds to a random number. Exponentiation of the first subexponent can be performed based on a left-to-right-type of exponentiation algorithm, and exponentiation of the second subexponent can be performed based on a right-to-left square-and-multiply-type of exponentiation algorithm. The final value is based on the exponentiations of the subexponents and can be decrypted data or a digital signature, which can be provided as an output.
Public/Granted literature
- US20090067617A1 SECURE MODULAR EXPONENTIATION BY RANDOMIZATION OF EXPONENT SCANNING Public/Granted day:2009-03-12
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