Hash-based signatures on hardware wallets are feasible: @blksresearch benchmarks show that SHRINCS & SLH-DSA take less than 2 minutes. Future wallets could be optimized & faster. Code is open-source. Thanks to @BlockstreamJade @Ledger @satoshilabs @BitBoxSwiss for the help!
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@BlockstreamAug 19
A popular concern says post-quantum signatures cannot run on the hardware wallets people already own. @blksresearch implemented hash-based schemes on four popular devices. All four signed. SLH-DSA, the NIST standard, in about two minutes at worst. blog.blockstream.com/hardwar…
Are Hardware Wallets Ready to Produce Post-Quantum Signatures?

Are Hardware Wallets Ready to Produce Post-Quantum Signatures?

Benchmarks on Jade, Trezor, Ledger, and BitBox02 show that hash-based post-quantum signature schemes already run on today's hardware wallets.

blog.blockstream.com
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Are they MPC-friendly?

Aug 20, 2026 · 9:44 PM UTC

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