The latest news and insights about Threshold Cryptography.
In Threshold Cryptography multiple parties must collaboratively compute on privately held key shares to decrypt a message or generate a signature.
In 2016, I wrote this blog on Lack of Trust in Big Brother. Since then, the U.S. Government created the Clarifying Overseas Use of Data Act (CLOUD Act), which introduces direct conflicts with the EU’s General Data Protection Regulation (GDPR). While enterprise migration to the cloud has progressed quite extensively over the past five years, many companies continue to wrestle with how to maintain compliance with these potentially conflicting laws. Fortunately, improvements in key management to support Bring Your Own Key (BYOK) services can mitigate those conflicts for easy and compliant cloud migration.
Ethereum transaction fees have hit new highs in 2021. One of the factors is that the price of Ethereum has also hit new highs, but there’s much more to it. One way to minimize transaction fees is to use secure Multiparty Computation (MPC) for your multiple party approved transactions. In addition to minimizing the cost of your own transactions, you’ll maximize Ethereum’s throughput and contribute to reducing fees for everyone.
Security professionals are tasked with protecting assets and services, maintaining compliance, and doing so cost-effectively. Clearly, this is a challenging task. The March 12, 2021 ruling by the Conseil d’Etat – France’s highest administrative court – is a perfect example of the balancing act that must be achieved. Fortunately, solutions exist to make this balancing act more manageable.
Secure Multiparty Computation (MPC) is a technology that is gaining widespread interest for both data privacy and protection applications. This article focuses on the use of secure MPC to protect cryptographic keys used for practical enterprise key management applications.
Historically, key management is complex, inflexible, and expensive. Enterprises need key management solutions that …
Instars, the pioneering decentralized and privacy-focused social networking platform, has integrated Sepior’s multiparty computation (MPC) key management to secure digital assets for the Instar Blockchain. Instars.com is the first social networking platform to use a combination of blockchain technology and secure MPC to provide innovative new social networking and personal data exchange services.
Nations globally are under immense pressure to contain and suppress the spread of COVID-19. One of the resources required is an effective tool for tracking infected individuals, identifying other parties they’ve been in proximity with, and contacting them. Naturally, this exercise brings up the difficult balance between privacy and public safety.
HD wallets are a feature of bitcoin and similar cryptocurrencies with the goal of providing improved privacy and usability. Compelling benefits can be achieved when using non-hardened key derivation. The problem is that if the private key corresponding to an xPub address is somehow leaked, then the private keys of *all* “siblings” and the parent can be exfiltrated. Multi-party computation offers a way to improve this state of affairs because a private key is never in one place (even when signing).
After several months of cultivating the idea, socializing with others, and working closely with other developers and practitioners of multiparty computation (MPC) solutions, Sepior is proud to co-found the MPC Alliance. Sepior initiated this effort because of our unwavering belief that MPC will profoundly improve the security, privacy, and innovation of online services.
If the above sounds interesting and compelling to you and your company, we invite you to contact us through the MPC Alliance website to learn more and to join our cause.
