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Slides accompanying 2WC12 Sebastiaan de Hoogh. MD5 Compression function.

Published byWinfred Osborne Modified over 8 years ago

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Presentation on theme: "Slides accompanying 2WC12 Sebastiaan de Hoogh. MD5 Compression function."— Presentation transcript:

1 Slides accompanying 2WC12 Sebastiaan de Hoogh

2 MD5 Compression function

3 Extra slides, if time permits

4 Website Certificates Source: http://www.win.tue.nl/hashclash/rogue-ca/

5 MD5 considered Harmful today Source: http://www.win.tue.nl/hashclash/rogue-ca/

6 Creating an intermediate CA serial number validity period real cert domain name real cert RSA key X.509 extensions signature rogue CA cert rogue CA RSA key rogue CA X.509 extensions Netscape Comment Extension (contents ignored by browsers) signature identical bytes (copied from real cert) collision bits (computed) chosen prefix (difference) CA bit! Source: http://www.phreedom.org/research/rogue-ca/

7 Computing Recources: ”Playstation Lab” “The birthdaying takes about 18 hours on the 200 PS3s using 30GB of memory that was equally divided over the PS3s” Source: http://www.win.tue.nl/hashclash/rogue-ca/

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