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Libcurve - An encryption and authentication library for ZeroMQ applications

Curve implements the CurveZMQ elliptic curve security mechanism, for use in ZeroMQ applications. This library is primarily a reference implementation for the CurveZMQ specification but may also be used for end-to-end security. CurveZMQ creates encrypted sessions ("connections") between two peers using short term keys that it securely exchanges using long term keys. When the session is over, both sides discard their short term keys, rendering the encrypted data unreadable, even if the long term keys are captured. It is not designed for long term encryption of data.

curvedns - A DNSCurve Forwarding Name Server

CurveDNS is the first publicly released forwarding implementation that implements the DNSCurve protocol. Brings us to a new question: what is DNSCurve? Parts of a master thesis have been written to answer this question, but of course there is a short answer. The protocol's official website gives a pretty good impression in only one sentence: 'DNSCurve uses high-speed high-security elliptic-curve cryptography to drastically improve every dimension of DNS security'.What is so special about this implementation is the fact that any authoritative DNS name server can act as a DNSCurve capable one, without changing anything on your current DNS environment. The only thing a DNS data manager (that is probably you) has to do is to install CurveDNS on a machine, generate a keypair, and update NS type records that were pointing towards your authoritative name server and let them point to this machine running CurveDNS. Indeed, it is that easy to become fully protected against almost any of the currently known DNS flaws, such as active and passive cache poisoning.