WO2012060685A8 - A method for linear transformation in substitution-permutation network symmetric-key block cipher - Google Patents

A method for linear transformation in substitution-permutation network symmetric-key block cipher Download PDF

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Publication number
WO2012060685A8
WO2012060685A8 PCT/MY2011/000105 MY2011000105W WO2012060685A8 WO 2012060685 A8 WO2012060685 A8 WO 2012060685A8 MY 2011000105 W MY2011000105 W MY 2011000105W WO 2012060685 A8 WO2012060685 A8 WO 2012060685A8
Authority
WO
WIPO (PCT)
Prior art keywords
permutation
matrix
key
deriving
scalar
Prior art date
Application number
PCT/MY2011/000105
Other languages
French (fr)
Other versions
WO2012060685A1 (en
Inventor
Ridza Wahiddin Mohamed
Mamadolimov ABDULRASHID
Soeheila Mohamad Moesfa
Mahmod Ramlan
Original Assignee
Mimos Berhad
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mimos Berhad filed Critical Mimos Berhad
Publication of WO2012060685A1 publication Critical patent/WO2012060685A1/en
Publication of WO2012060685A8 publication Critical patent/WO2012060685A8/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
    • H04L9/0631—Substitution permutation network [SPN], i.e. cipher composed of a number of stages or rounds each involving linear and nonlinear transformations, e.g. AES algorithms

Abstract

One embodiment of the present invention is a method of linear transformation in Substitution-Permutation Network symmetric-key block cipher producing n x n key-dependent MDS matrices from given n x n MDS matrix by scalar multiplication and permutations of elements of given matrix where multiplicative scalar and permutations are derived from binary inputs of length l. The method comprising deriving multiplicative scalar from binary input; multiplying given matrix with multiplicative scalar, producing first intermediate matrix; deriving first permutation of n objects from binary input; permuting rows of first intermediate matrix according to first permutation, producing second intermediate matrix; deriving second permutation of n objects from binary input; and permuting columns of second intermediate matrix according to second permutation to produce final MDS matrix. Another embodiment of the present invention is a method of linear transformation in Substitution-Permutation Network symmetric-key block cipher producing n x n key-dependent MDS matrices from given n x n MDS matrix by scalar multiplication and permutations of elements of given matrix where multiplicative scalar and permutations are derived from binary inputs of length l. The method comprising deriving multiplicative scalar from the key (202); multiplying given matrix with multiplicative scalar to produce first intermediate matrix (204); deriving first permutation of n objects from the key (206); permuting rows of first intermediate matrix according to first permutation to produce second intermediate matrix (208); deriving second permutation of n objects from the key (304); and permuting columns of second intermediate matrix according to second permutation (212) to produce final MDS matrix (214).
PCT/MY2011/000105 2010-11-04 2011-06-17 A method for linear transformation in substitution-permutation network symmetric-key block cipher WO2012060685A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI2010005206 MY150357A (en) 2010-11-04 2010-11-04 A method for linear transformation in substitution-permutation networks symmetric-key block cipher
MYPI2010005206 2010-11-04

Publications (2)

Publication Number Publication Date
WO2012060685A1 WO2012060685A1 (en) 2012-05-10
WO2012060685A8 true WO2012060685A8 (en) 2016-09-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/MY2011/000105 WO2012060685A1 (en) 2010-11-04 2011-06-17 A method for linear transformation in substitution-permutation network symmetric-key block cipher

Country Status (2)

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MY (1) MY150357A (en)
WO (1) WO2012060685A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2484890A (en) 2010-08-17 2012-05-02 Artemis Intelligent Power Ltd Ring cam ensuring smooth follower handover between segments
CN102713260A (en) 2010-08-17 2012-10-03 阿尔特弥斯智能动力有限公司 Fluid-working machine with multi-lobe ring cam
CA3167530A1 (en) * 2020-01-10 2021-07-15 Zeu Technologies, Inc. A method for symmetric asynchronous generative encryption

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2327911A1 (en) * 2000-12-08 2002-06-08 Cloakware Corporation Obscuring functions in computer software
JP4561252B2 (en) * 2004-09-03 2010-10-13 ソニー株式会社 Cryptographic processing apparatus, cryptographic processing method, and computer program
US9336160B2 (en) * 2008-10-30 2016-05-10 Qualcomm Incorporated Low latency block cipher

Also Published As

Publication number Publication date
MY150357A (en) 2013-12-31
WO2012060685A1 (en) 2012-05-10

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