Tim Ruffing
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View article: ROAST: Robust Asynchronous Schnorr Threshold Signatures
ROAST: Robust Asynchronous Schnorr Threshold Signatures Open
Bitcoin and other cryptocurrencies have recently introduced support for Schnorr signatures whose cleaner algebraic structure, as compared to ECDSA, allows for simpler and more practical constructions of highly demanded "-of-" threshold sig…
View article: Responsible vulnerability disclosure in cryptocurrencies
Responsible vulnerability disclosure in cryptocurrencies Open
Software weaknesses in cryptocurrencies create unique challenges in responsible revelations.
View article: IEEE S&B 2020: 4th IEEE Workshop on Security and Privacy on the Blockchain
IEEE S&B 2020: 4th IEEE Workshop on Security and Privacy on the Blockchain Open
Digital contents are typically sold online through centralized and custodian\nmarketplaces, which requires the trading partners to trust a central entity. We\npresent FileBounty, a fair protocol which, assuming the cryptographic hash of\nt…
View article: Cryptography for Bitcoin and friends
Cryptography for Bitcoin and friends Open
Numerous cryptographic extensions to Bitcoin have been proposed since Satoshi Nakamoto introduced the revolutionary design in 2008. However, only few proposals have been adopted in Bitcoin and other prevalent cryptocurrencies, whose resist…
View article: PathShuffle: Credit Mixing and Anonymous Payments for Ripple
PathShuffle: Credit Mixing and Anonymous Payments for Ripple Open
The I owe you (IOU) credit network Ripple is one of the most prominent alternatives in the burgeoning field of decentralized payment systems. Ripple’s path-based transactions set it apart from cryptocurrencies such as Bitcoin. Its pseudony…