cr.yp.to: 2014.03.23: How to design an elliptic-curve signature system
Earlier this month a new paper by Naomi Benger, Joop van de Pol, Nigel Smart, and Yuval Yarom hit the news. The paper explains how to recover secret keys from OpenSSL's implementation of ECDSA-secp256k1 using timing information from "as little as 200 signatures"; ECDSA-secp256k1 is the signature sys...
Hasnain says:
"Earlier this month a new paper by Naomi Benger, Joop van de Pol, Nigel Smart, and Yuval Yarom hit the news. The paper explains how to recover secret keys from OpenSSL's implementation of ECDSA-secp256k1 using timing information from "as little as 200 signatures"; ECDSA-secp256k1 is the signature system used by Bitcoin."