Lukas Helminger<\/a> explains how the Private Shared State differs from run-of-the-mill multiparty computation solutions as it allows for arbitrary computation on encrypted data, as well as the possibility to generate a proof of correctness of that computation.<\/p>\nAccording to Helminger, this approach creates a \u201cpersistent state that no single entity can access, but can be updated over time,\u201d enabling multiple parties to jointly maintain and compute over the same private state. This sets PSS apart from ZKMPC, which he said focuses on one-off secure computations without providing an on-chain state model that contracts can reference.<\/p>\n
The company also distinguishes its work from NuCypher\u2019s threshold cryptography framework. <\/p>\n
Whereas NuCypher focuses more on traditional use cases for MPC or threshold cryptography to allow signing, decryption delegation and threshold access, PSS goes beyond that by providing shared, updatable private state with on-chain proofs.<\/p>\n
Another main difference that sets PSS apart from other solutions is its emphasis on usability for developers. <\/p>\n
<\/p>\n
\u201cOur approach is different: we\u2019re shaping MPC, coSNARKs and PSS into tools that any developer can pick up to build apps, with confidentiality,\u201d Helminger said. <\/p>\n
Through its coNoir toolkit, the company hopes to make integration seamless for those already using Noir, Aztec\u2019s zero-knowledge programming language. <\/p>\n
\u201cTraditional MPC libraries often came out of academia, which meant they were powerful but not practical. With coNoir, we aim to make it trivial for developers already using coNoir to extend their applications into an MPC and PSS environment,\u201d stated Helminger.<\/p>\n
In terms of safety and security, Helminger claims that the protocols that the network is built upon have gone through years of peer-reviewed research and that it is currently undergoing a security assessment, with regular external audits planned once the system stabilizes.<\/p>\n
\u201cBy the very nature of MPC, no single node learns the plaintext, and confidentiality holds as long as the threshold of colluding nodes is not exceeded,\u201d he said.<\/p>\n
How does the Private Shared State fare against quantum computing?<\/h2>\n
Many experts view quantum computing as a potential threat to cryptocurrency as it evolves at a rapid pace. In fact, many have predicted that with enough power it could one day break Bitcoin\u2019s encryption and gain access to wallets, an event often referred to as \u201cQ Day.\u201d<\/p>\n
Most recently, Solana co-founder Anatoly Yakovenko said that there is currently a 50-50 possibility that in five years time, quantum computers will be strong enough to crack the cryptographic safeguards protecting Bitcoin wallets.<\/p>\n
When asked how TACEO and Aztec\u2019s PSS will fare against the threat of quantum computing, TACEO CEO Lukas Helminger said that some parts of the stack, such as secret sharing within MPC environments are \u201calready information-theoretically secure and naturally post-quantum.\u201d<\/p>\n
\u201cWhere quantum risk does come in, such as, in certain proof systems, we\u2019re actively exploring post-quantum secure approaches, including hash-based ZK,\u201d said Helminger.<\/p>\n
He explained that the research team working on the project has had prior experience working on post-quantum standards, therefore they are gearing up the system with a clear migration path in mind as the technology continues to evolve.<\/p>\n
\u201cWe take a crypto-agile approach: the system is designed so we can migrate components to post-quantum alternatives as they mature. For example, where today\u2019s SNARKs rely on elliptic-curve assumptions, we\u2019re already experimenting with hash-based proof systems,\u201d he said.<\/p>\n
<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"
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