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cryptography and copy protection

Dpa comb 52 rennes presentation the continuous case

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Unformatted text preview: comb 52 Rennes presentation The continuous case 53 Rennes presentation TIKHONOV solutions (for several λ) 54 Rennes presentation TIKHONOV solutions (with optimised λ !) 55 Rennes presentation Iterative LSQR (various iteration attempts) 56 Rennes presentation OTHER ATTACKS: FIB s FIB: focused ion beam x Uses gallium ions to mill and form images x Operates like a SEM x Imaging to 5nm resolution s Possible attacks x Deposit probe pads x Defeat blown fuse links x Connect tracks x Cut tracks 57 Rennes presentation CHIP MODIFICATION: CUT... 260 Stage current (pA) 240 220 200 180 160 140 120 -0.1 0.0 0.1 0.2 0.3 0.4 Depth (microns) 58 Rennes presentation 0.5 0.6 0.7 CHIP MODIFICATION: CONNECT... 59 Rennes presentation ADVANCED FIB ATTACKS 60 Rennes presentation JAVA ATTACKS Applets local code Verification local codel Applet type 2 Applet type 1 Applet type s Sandbox Domain 2 Domain 1 JVM system resources 61 Security policy Rennes presentation Conclusion s For any information/pointers on card security and card attacks: x [email protected] 62 Rennes presentation...
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