公开(公告)号：MY147708A

公开(公告)日：2013-01-15

申请号：MYPI20093553

申请日：2009-08-26

Applicant: MIMOS BERHAD

Inventor： AZIZ RAJA MOHD FAUD BIN TENGKU ,  OTHMAN MASURI PROF DR ,  BEG AHMAD RAIF BIN MOHAMED NOOR ,  SAEB MAGDY DR

IPC: H04L9/06

Abstract: A METHOD OF ENCRYPTING (10) A PLAINTEXT WITH ENHANCED SECURITY IN CRYPTOGRAPHY OPERATION, COMPRISES STEPS OF RECEIVING THE PLAINTEXT TO BE ENCRYPTED, GENERATING AN INITIAL ROUND (11) BY PERFORMING ADDROUNDKEY FUNCTION (14) WITH A FIRST KEY EXPANSION (15), GENERATING SUBSEQUENT ROUNDS (26) BASED ON THE OUTPUT FROM GENERATED INITIAL ROUND (11) BY PERFORMING BYTESUB (18), SHIFTROW (19), MIXCOLUMN (20) AND ADDROUNDKEY (23) FUNCTIONS, WHEREIN THE ADDROUNDKEY FUNCTION (23) IS PERFORMED USING A FIRST KEY SCHEDULE (25), AND GENERATING A FINAL ROUND (27) BY PERFORMING BYTESUB (28), SHIFTROW (29) AND ADDROUNDKEY (32) FUNCTIONS WHEREIN THE ADDROUNDKEY FUNCTION (32) IS PERFORMED USING THE FIRST KEY EXPANSION (15) TO TRANSFORM THE PLAINTEXT TO CIPHERTEXT. A BOOLEAN AND ROTATION FUNCTION (12, 21, 30) FOLLOWED BY AN ADDITIONAL ADDROUNDKEY FUNCTION (13, 22, 31) WHICH ARE KEY-BASED ARE PERFORMED BEFORE THE ADDROUNDKEY FUNCTION (14, 23, 32) IN EACH ROUNDING STAGE.

公开(公告)号：MY146157A

公开(公告)日：2012-06-29

申请号：MYPI20082561

申请日：2008-07-10

Applicant: MIMOS BERHAD

Inventor： BEG AHMAD RAIF BIN MOHAMED NOOR ,  AZIZ RAJA MOHD FUAD TENGKU ,  TALIB AZHAR ABU ,  OTHMAN NORHANIZA ,  YAAKOB WIRA FIRDAUS HJ ,  BORHAN ROZITA ,  OMAR SYED AHMAD ANAS SYED

IPC: G06F7/58

Abstract: THE PRESENT INVENTION RELATES TO METHOD FOR GENERATING A PSEUDO - RANDOM DATA WHEREBY THE SAID METHOD IS ACCOMPLISHED WITH AN ADDITIONAL CIRCUIT. THE MAIN EMBODIMENTS OF METHOD OF THE PRESENT INVENTION ARE THE ACT OF RANDOMLY TAPPING VALUES FROM THE OUTPUT BASED ON A PLURALITY OF REGISTERS WHICH ARE CONNECTED IN A LINEAR FEEDBACK SHIFT MODE AND THUS PROVIDING SAID VALUES FOR FURTHER PROCESSING AND GENERATING A SINGLE FINAL OUTPUT.

公开(公告)号：MY152148A

公开(公告)日：2014-08-15

申请号：MYPI20084590

申请日：2008-11-14

Applicant: MIMOS BERHAD

Inventor： YAAKOB WIRA FIRDAUS BIN HAJI ,  TALIB AZHAR BIN ABU ,  BEG AHMAD RAIF BIN MOHAMED NOOR ,  AZIZ RAJA MOHD FUAD TENGKU

IPC: H04L9/12

Abstract: THE PRESENT INVENTION DISCLOSES A METHOD AND SYSTEM FOR PROVIDING OR ENSURING SYNCHRONIZATION OF CRYPTOGRAPHIC DEVICES FOR TRANSMISSION OF DATA WITHIN A VOICE CHANNEL, PARTICULARLY THE GSM VOICE CHANNEL NETWORK. THE TRANSMISSION SOURCE (100) IS CONFIGURED TO GENERATE SEVERAL CYCLES OF 32-BIT DIGITAL ZEROS DATA PRIOR TO TRANSMITTING THE ENCRYPTED DATA TO THE RECEPTION SOURCE (200). ACCORDINGLY, THE TRANSMISSION OF DIGITAL ZEROS DATA PROVIDES SUFFICIENT TIME FOR THE RECEPTION SOURCE (200) TO PREPARE FOR RECEIVING THE ENCRYPTED DATA FROM THE TRANSMISSION SOURCE (100) AND THEREBY ASSISTING IN SYNCHRONIZATION OF DEVICES INITIALIZATION FOR DATA TRANSMISSION. FIG 3