SHRINCS BIP published: Quantum-secure Bitcoin comes with a catch

SHRINCS BIP published: Quantum-secure Bitcoin comes with a catch

Özet: Kripto piyasasında önemli gelişmeler yaşanıyor.

Blockstream co-founder and CEO Adam Back has a reputation as a quantum computer skeptic who believes the technology is so immature the threat won’t materialize for decades.Which makes it all the more fascinating that his company is one of the leaders in researching practical solutions to the issue.

Back told Cointelegraph earlier this year “the safe thing” is to prepare for the threat well in advance.

Blockstream has already proven its experimental post-quantum signature scheme called SHRINCS works in production on its Liquid sidechain and a Bitcoin Improvement Proposal for SHRINCS was published earlier today.

Blockstream Research’s Jonas Nick called it “the first concrete proposal for a post-quantum signature scheme designed specifically for Bitcoin.” But he added that “SHRINCS is not intended to be Bitcoin’s ‘final’ signature scheme, and it is not optimal along every axis.

”I do think it is a very good trade-off among the options we have now,” he said.

While the timeline is hotly debated, scientists agree that sufficiently advanced quantum computers will be able to reverse engineer private keys from public keys, thereby undermining Bitcoin’s security and enabling the theft of billions.

That’s why the race is on to develop ways to upgrade Bitcoin to make it safe from attack.  One of Blockstream’s most promising areas of study has been in optimizing post-quantum signature schemes for Bitcoin’s requirements to enable the blockchain to keep more of the existing properties Bitcoiners hold dear.

The current crop of post-quantum secure hash and lattice-based signature schemes endorsed by the National Institute of Standards and Technology are between 38 and 123 times larger than Bitcoin’s existing ECDSA and Schnorr signatures.Deploying any of them in Bitcoin could slow the blockchain down to a fraction of 1 TPS.

Ethereum’s post-quantum team plans to deal with this issue by aggregating signatures using a tiny zero-knowledge proof for each block.

That’s under consideration for Bitcoin too, and if implemented, it would see Bitcoin actually run faster than it does today, as a single proof takes less blockspace than a bunch of signatures.

Analiz: Piyasa hareketliliği devam ediyor.