Elliptic curve cryptography is becoming more and more popular. One of its main supporters is the cryptocurrency system Bitcoin which uses an elliptic curve scheme for their digital signatures. Smaller key size, a more efficient implementation than the RSA system, and a similar level of security make elliptic curve cry Dual EC is an algorithm to compute pseudorandom numbers starting from some random input. Dual EC was standardized by NIST, ANSI, and ISO among other algorithms to generate pseudorandom numbers. Famous example: Dual_EC_DRBG Malicious wallet with cryptographic backdoor The nonce k is generated by a backdoor’d RNG. Attacker scans all transactions on the blockchain ...and uses his backdoor to compute the secret key d. 15. Kleptograms. Kleptograms Term ﬁrst coined by Adam Young and Moti Yung in 1997. Notation Lower-case letters (a, t, k 1, ...) for numbers Capital letters (G, A ... Etwas technisch komplexerer aber weiterführender Artikel zu den Sicherheitslücken bei Juniper-Firewalls… eher für Informatiker, Techniker und Mathematiker empfohlen…golem.deEine der in Juniper-Firewalls gefundenen Hintertüren nutzt offenbar einen Zufallszahlengenerator, der mutmaßlich von der NSA kompromittiert ist. Bei der Analyse der Änderungenlink Dual EC DRBG: Die Hintertüren in ... And like Dual_EC_DRBG, it provides no documentation for how or why this number was chosen. Now as Vitalik pointed out, even if the NSA knew of a specific elliptic curve with vulnerabilities, it still should have been near impossible for them rig the system due to the fact that brute-forcing a hash function is not feasible.
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