Achieving true decentralization requires decentralized cryptography. CHURP is a cryptographic protocol for secret sharing in decentralized settings. In such a setting where nodes may come and go, traditional secret sharing (e.g., Shamir's) is no longer secure. Featuring several fundamental innovations, CHURP accomplishes the mission while being 2300x more efficient than previous schemes!
Suppose that N players share cryptocurrency using an M-of-N multisig scheme. If N-M+1 players disappear, the remaining ones have a problem: They've permanently lost their funds. In this blog, we propose a solution to this critical problem using the power of the trusted hardware.
Guest blogger Prof. Karen Levy describes how contracts often include terms that are unenforceable, purposefully vague, or never meant to be enforced, how this helps set expectations, and what this means for smart contracts.
We have been examining the state of the Bitcoin and Ethereum networks over time. In a recent study, we examine the level of decentralization in these two networks, with some interesting takeaways for the future.
Emin Gün Sirer
Hacker and professor at Cornell, with interests that span distributed
systems, OSes and networking. Current projects include HyperDex, OpenReplica
and the Nexus OS. more...