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Understanding Optimizations and Measuring Performances of PBKDF2
passwords PBKDF2 HMAC-SHA1
2019/2/25
Password-based Key Derivation Functions (KDFs) are used to generate secure keys of arbitrary length implemented in many security-related systems. The strength of these KDFs is the ability to provide c...
Measuring, simulating and exploiting the head concavity phenomenon in BKZ
BKZ algorithm simulator
2018/11/14
The Blockwise-Korkine-Zolotarev (BKZ) lattice reduction algorithm is central in cryptanalysis, in particular for lattice-based cryptography. A precise understanding of its practical behavior in terms ...
In search of CurveSwap: Measuring elliptic curve implementations in the wild
elliptic curve cryptography invalid curve attack curveswap
2018/3/30
We survey elliptic curve implementations from several vantage points. We perform internet-wide scans for TLS on a large number of ports, as well as SSH and IPsec to measure elliptic curve support and ...
Measuring small subgroup attacks against Diffie-Hellman
diffie-hellman small subgroup attack
2016/12/8
Several recent standards, including NIST SP 800- 56A and RFC 5114, advocate the use of “DSA” parameters for Diffie-Hellman key exchange. While it is possible to use such parameters securely, additiona...