Releasing Three Zcash Security Audit Reports

At the request of Zcash Company, the team at Least Authority had the opportunity to provide security consulting services on Zcash’s major 2018 releases. This included auditing Zcashd v1.0.15 (as part of the Sprout 1.0.x series), reviewing and providing feedback on the Overwinter and Sapling Specifications for future implementation, and a security review of the Sapling Implementation and RPC Interface …

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Introducing P4: Private Periodic Payment Protocol

Least Authority has recently designed a protocol called the Private Periodic Payment Protocol, or P4, which aims to define the way in which subscription services can be funded using end-to-end private cryptocurrency payments. P4 incorporates the use of Zcash shielded transactions for private payments and leverages the Tor anonymity network’s onion services to radically reduce the amount of personally identifiable information (PII) available to merchants. In addition, P4 introduces…

Least Authority Performs Security Audit of BEAM’s Mimblewimble Implementation

At the request of Meejah, and Jan Winkelmann performed the audit in collaboration with the BEAM team members Alex Romanov, Vladislav Gelfer, and Artem Gorbachev from October 1 – November 9, 2018. The initial report was issued on November 14, 2018, and an updated report following the discussion and verification phase was issued on December 24, …

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