While normal transactions take seconds to create, shielded transactions using zk-SNARKs take one to two minutes. That's why engineers have been exploring ways to cut down the time needed to securely generate shielded transactions.
Meet 'Jubjub'
Called Jubjub, the new type of elliptic curve uses math to slash the time needed to create a transaction.
With the technology, Bowe explains in the announcement blog post, the researchers are claiming "record-breaking performance." According to the post, generating zk-SNARKs transactions will now be roughly five times faster while requiring 98 times less computer memory.
One advantage of the tech is that it makes possible zcash transactions on a smartphone, which was infeasible before.
Next year will be very interesting, no doubt!
https://www.coindesk.com/better-faster-zk-snarks-zcash-developers-release-new-privacy-tech/