Tag Info

New answers tagged


In the usual definition of security of Elliptic Curves, curve25519 security is in fact 126 bits. If look at safecurves's rho page you can see the rho complexity for curve25519 is $2^{125.8}$ in accordance to what you say. Curve25519 author basically doesn't accept that definition of security. In the Curve25519 paper he states in section 1: Every known ...


Assuming this is the paper you're talking about, your modification completely eliminates resilience to collisions in the underlying hash function $H$. The EdDSA scheme (and in the Schnorr scheme on which it is based) is highly resilient against collisions in $H$. Specifically, in the generic group model, the Schnorr scheme has been proven to be secure even ...

Top 50 recent answers are included