3 ms·
Backdoor in the sense of leaking state? And is there a case in the wild ( except the PS3 hack?)?
by yk 14y ago
Backdoor in the sense of leaking state?
And is there a case in the wild ( except the PS3 hack?)?
- simcop2387 14y agoThe debian certificate instance is a good example too. http://digitaloffense.net/tools/debian-openssl/ http://digitaloffense.net/tools/debian-openssl/
- marshray 14y agoBest paper Usenix Security '12. Nadia Heninger, UC San Diego; Zakir Durumeric, University of Michigan; Eric Wustrow and J. Alex Halderman, University of Michigan https://www.usenix.org/conference/usenixsecurity12/mining-your-ps-and-qs-detection-widespread-weak-keys-embedded-devices https://www.usenix.org/conference/usenixsecurity12/mining-yo... "We find that 0.75% of TLS certificates share keys due to insufficient entropy during key generation, and we suspect that another 1.70% come from the same faulty implementations and may be susceptible to compromise. Even more alarmingly, we are able to obtain RSA private keys for 0.50% of TLS hosts and 0.03% of SSH hosts, because their public keys shared nontrivial common factors due to entropy problems, and DSA private keys for 1.03% of SSH hosts, because of insufficient signature randomness." Ron was wrong, Whit is right Arjen K. Lenstra and James P. Hughes and Maxime Augier and Joppe W. Bos and Thorsten Kleinjung and Christophe Wachter http://eprint.iacr.org/2012/064 http://eprint.iacr.org/2012/064
- ctz 14y ago> except the PS3 hack? To be clear, the PS3 problem was not a problem of randomness quality or a PRNG backdoor. It was illegal nonce reuse in the zero-knowledge proof-of-key-possession protocol embedded in DSA signatures.
- wolf550e 14y agoDid you mean to use the word "illegal"?
- lucian1900 14y agoIllegal as in "violating their own crypto policy".
- ctz 14y agoSorry 'illegal' in the sense of being contrary to the requirements of the crypto protocol, in the same way that you can have the concept of an 'illegal operation' in a CPU ISA.