Practical demonstration of Bananb Target Collisions for Skein with NIST KAT files
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1 1 Practical demonstration of Bananb Target Collisions for Skein with NIST KAT files Presented by Danilo Gligoroski Department of Telematics, Faculty of Information Technology, Mathematics and Electrical Engineering Norwegian University of Science and TechnologyTechnology - NTNU, NORWAY
2 2 Last year at CRYPTO 2010, Rump Session Banana Attack On Blue Midnight Wish by Gaëtan Leurent
3 3 Last year at CRYPTO 2010, Rump Session Banana Attack On Blue Midnight Wish by Gaëtan Leurent This year on Rump Session Bananb Attack On Skein (and others)
4 4 CRYPTO 2010, Rump Session Bananb Attack is Banana Attack a philosophical On Blue Midnight Wish by Xxxx sibling to Bananb Attack Banana Attack On Skein, BLAKE and maybe others
5 5 Demonstration of Bananb Target Collisions for Skein with NIST KAT files Message 1: Banana Attacks are crap
6 6 Demonstration of Bananb Target Collisions for Skein with NIST KAT files Message 1: Banana Attacks are crap Message 2: Banana Attacks are craq
7 7 Demonstration of Bananb Target Collisions for Skein with NIST KAT files Message 1: Attacks are crap Message 2: Attacks are craq Prepend a garbage (computed by an undisclosed algorithm)
8 8 Demonstration of Bananb Target Collisions for Skein with NIST KAT files Transform to hexadecimal Message 1: Attacks are crap E616E B Message 2: Attacks are craq E616E B
9 9 Demonstration of Bananb Target Collisions for Skein with NIST KAT files Produce a NIST KAT file ShortMsgKAT.txt # ShortMsgKAT.txt # Algorithm Name: Practical demonstration of Bananb Target Collisions for Skein with NIST KAT files # Principal Submitter: Danilo Gligoroski for the Rump Session CRYPTO 2011 Len = 260 Msg = E616E B MD =?? Len = 260 Msg = E616E B MD =??
10 10 Demonstration of Bananb Target Collisions for Skein with NIST KAT files for Skein Compile and run genkat256.exe # ShortMsgKAT.txt provided in Skein submission # Algorithm Name: Practical demonstration of Bananb Target Collisions for Skein with NIST KAT files # Principal Submitter: Danilo Gligoroski for the Rump Session CRYPTO 2011 package over ShortMsgKAT.txt and Len = 260 Msg = E616E B MD =?? see the produced file ShortMsgKAT_256.txt Len = 260 Msg = E616E B MD =??
11 11 Demonstration of Bananb Target Collisions for Skein with NIST KAT files # ShortMsgKAT_256.txt # Algorithm Name: Practical demonstration of Bananb Target Collisions for Skein with NIST KAT files # Principal Submitter: Danilo Gligoroski for the Rump Session CRYPTO 2011 Len = 260 Msg = E616E B MD = EBFEF527B76D55D886A5B91E BFCAB9E78253F3411B4A0840CA5055D2 Len = 260 Msg = E616E B MD = EBFEF527B76D55D886A5B91E BFCAB9E78253F3411B4A0840CA5055D2
12 12 Why Skein, why not the other SHA-3 finalists?
13 13 Why Skein, why not the other SHA-3 finalists? Well, personally I could do BLAKE too, but I am not interested for the others amd64; Sandy Bridge (206a7); 2011 Intel Core i7-2600k; 4 x 3400MHz; threads; sandy0, supercop bit mode, 512 bit hash Speed cycles/byte 1.skein blake sha keccakc jh groestl
14 14
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