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zk-SNARKs is an emerging technology that helps protect
Internet privacy
Gene degradation
Sunburn in Astronomers
Wildlife Corridors
The tool is an emerging cryptographic protocol called a zero-knowledge proof. This new tool can—for instance—let you prove you’re over 18 without revealing your date of birth, or prove you have enough money in the bank for a financial transaction without revealing your balance or other details. That limits the risk of a privacy breach or identity theft. Much of the credit for a practical zero-knowledge proof goes to Zcash, a digital currency that launched in late 2016. Zcash’s developers used a method called a zk-SNARK (for “zero- knowledge succinct non- interactive argument of knowledge”) to give users the power to transact anonymously. That’s not normally possible in Bitcoin and most other public blockchain systems, in which transactions are visible to everyone. Though these transactions are theoretically anonymous, they can be combined with other data to track and even identify users. For banks, this could be a way to use blockchains in payment systems without sacrificing their clients’ privacy. Last year, JPMorgan Chase added zk-SNARKs to its own blockchain-based payment system. Limitations: For all their promise, though, zk-SNARKs are computation-heavy and slow. They also require a so-called “trusted setup,” creating a cryptographic key that could compromise the whole system if it fell into the wrong hands. But researchers are looking at alternatives that deploy zero- knowledge proofs more efficiently and don’t require such a key.
By: kamaljeet kaur ProfileResourcesReport error
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