Software and hardware which contained the possible backdoor Dual EC DRBG

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in december 2013 proof of concept backdoor published uses leaked internal state predict subsequent random numbers, attack viable until next reseed.


in december 2015, juniper networks announced revisions of screenos firmware used dual_ec_drbg suspect p , q points, creating backdoor in firewall. supposed use q point chosen juniper may or may not have been generated in provably safe way. dual_ec_drbg used seed ansi x9.17 prng. have obfuscated dual_ec_drbg output killing backdoor. however, bug in code exposed raw output of dual_ec_drbg, hence compromising security of system. backdoor backdoored unknown party changed q point , test vectors. allegations nsa had persistent backdoor access through juniper firewalls had been published in 2013 der spiegel.


the kleptographic backdoor example of nsa s nobus policy, of having security holes can exploit.








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