Post Quantum Cryptography, why is it important

Ashley Bedford

9/29/20252 min read

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Last night I had the chance to attend a </๐—ฑ๐—ฒ_๐—–๐—˜๐—ก๐—ง๐—ฅ๐—”๐—Ÿ๐—œ๐—ญ๐—˜๐——> event hosted by Margaret Passe. Thank you for creating such an important space for discussion.

A big thank you as well to Craig Clement from (๐—ค๐—ฅ๐—Ÿ) for joining us and shining a light on a problem most people arenโ€™t thinking about yet: what happens to our digital security when quantum computers arrive?

๐—ค๐—ฅ๐—Ÿ is the company behind the first blockchain built with post-quantum cryptography, designed to stay secure even against future quantum attacks.

๐˜๐˜ฆ๐˜ณ๐˜ฆโ€™๐˜ด ๐˜ต๐˜ฉ๐˜ฆ ๐˜ธ๐˜ข๐˜ฌ๐˜ฆ-๐˜ถ๐˜ฑ ๐˜ค๐˜ข๐˜ญ๐˜ญ ๐Ÿ‘‡

๐Ÿ”‘ With ๐—ฆ๐—ต๐—ผ๐—ฟโ€™๐˜€ ๐—”๐—น๐—ด๐—ผ๐—ฟ๐—ถ๐˜๐—ต๐—บ (developed by Peter Shor), a powerful quantum computer could break the encryption that protects most of todayโ€™s digital systems, including Bitcoin wallets. Specifically, algorithms like ๐—ฅ๐—ฆ๐—” and ๐—˜๐—–๐——๐—ฆ๐—” (Elliptic Curve Digital Signature Algorithm), which secure blockchains, banking, and much of the internet, would be vulnerable. Once those private keys are exposed, assets can be stolen.

โฑ๏ธ Research shows that, in the best-case scenario, weโ€™d have only about ๐Ÿณ๐Ÿฒ ๐—ฑ๐—ฎ๐˜†๐˜€ to migrate all Bitcoin into new, quantum-secure wallets. But that estimate assumes ๐˜ฆ๐˜ท๐˜ฆ๐˜ณ๐˜บ ๐˜ด๐˜ช๐˜ฏ๐˜จ๐˜ญ๐˜ฆ ๐˜ต๐˜ณ๐˜ข๐˜ฏ๐˜ด๐˜ข๐˜ค๐˜ต๐˜ช๐˜ฐ๐˜ฏ ๐˜ฐ๐˜ฏ ๐˜ต๐˜ฉ๐˜ฆ ๐˜ฃ๐˜ญ๐˜ฐ๐˜ค๐˜ฌ๐˜ค๐˜ฉ๐˜ข๐˜ช๐˜ฏ ๐˜ช๐˜ด ๐˜ฅ๐˜ฆ๐˜ฅ๐˜ช๐˜ค๐˜ข๐˜ต๐˜ฆ๐˜ฅ ๐˜ต๐˜ฐ ๐˜ฎ๐˜ช๐˜จ๐˜ณ๐˜ข๐˜ต๐˜ช๐˜ฐ๐˜ฏ ๐˜ฐ๐˜ฏ๐˜ญ๐˜บ. In reality, migration could take ๐˜†๐—ฒ๐—ฎ๐—ฟ๐˜€โ€ฆ leaving a dangerous window of vulnerability.

๐ŸŒ Thankfully, efforts are already underway:

โ€ข ๐—ก๐—œ๐—ฆ๐—ง has standardized new post-quantum algorithms like ML-DSA and SPHINCS+ (SLH-DSA), with HQC as a backup.

โ€ข Companies like SandboxAQ (led by CEO Jack Hidary) are contributing directly to these standards.

โ€ข Meanwhile, quantum hardware leaders like ๐—ค๐˜‚๐—ฎ๐—ป๐˜๐—ถ๐—ป๐˜‚๐˜‚๐—บ and ๐—œ๐—ผ๐—ป๐—ค are racing to make large-scale, fault-tolerant quantum computers a reality.

๐Ÿšจ ๐˜ฝ๐™ค๐™ฉ๐™ฉ๐™ค๐™ข ๐™ก๐™ž๐™ฃ๐™š: When large-scale quantum computers arrive, ๐—ฅ๐—ฆ๐—” and ๐—˜๐—–๐——๐—ฆ๐—”, the encryption behind most of todayโ€™s digital security, will break. Migration isnโ€™t optional. By ๐Ÿฎ๐Ÿฌ๐Ÿฏ๐Ÿฑ, these systems will need to be fully replaced with quantum-safe alternatives.

QRL may have been โ€œtoo earlyโ€ to the market, but their work is starting to look exactly on time. If you want to start learning, check out QRLโ€™s YouTube channel and get connected with this community.

Thank you again </de_CENTRALIZED> for sparking this conversation. This is one of those topics we canโ€™t afford to ignore.