Research for the quantum and AI era
Featured
- SPHINCS+ Parameter Explorer companion guideA companion guide to the SPHINCS+ Parameter Explorer: understand its parameters, signature budget, hash costs and visualizations, then compare and share your own profiles.Cryptography · Hash-based
- Frame Transactions and the Post-Quantum Transition on EthereumA technical introduction to EIP-8141 frame transactions as specified in October 2026, why they matter for post-quantum accounts, and what the public mempool rules mean for post-quantum signatures.Cryptography · Ethereum
- Introducing CUTS, a new few-time hash-based signature schemeCUTS (Chained Uniform-sum Tree Signatures) is Project Eleven's new few-time, hash-based, post-quantum signature scheme with compact signatures that stay secure even if a key signs twice.Cryptography
Tools
Papers
- CUTS: Chained Uniform-sum Tree Signatures Jamie Judd, Louis Tajan, Conor Deegan and Furkan AkalIACR ePrint · (opens in a new tab)
- Lattice HD Wallets: Post-Quantum BIP32 Hierarchical Deterministic Wallets from Lattice Assumptions Conor Deegan, James Fitzwater, Kamil Doruk Gur and David NugentIACR ePrint · (opens in a new tab)
All articles
6 articles
- SPHINCS+ Parameter Explorer companion guideA companion guide to the SPHINCS+ Parameter Explorer: understand its parameters, signature budget, hash costs and visualizations, then compare and share your own profiles.
- Frame Transactions and the Post-Quantum Transition on EthereumA technical introduction to EIP-8141 frame transactions as specified in October 2026, why they matter for post-quantum accounts, and what the public mempool rules mean for post-quantum signatures.
- Introducing CUTS, a new few-time hash-based signature schemeCUTS (Chained Uniform-sum Tree Signatures) is Project Eleven's new few-time, hash-based, post-quantum signature scheme with compact signatures that stay secure even if a key signs twice.
- How to choose SPHINCS+ Parameters for blockchainA brief discussion on what SPHINCS+ parameters mean and how to change them in a sensible way to make SPHINCS+ a viable cryptographic signature for blockchain
- Key recovery from state reuse: finding, fixing, and disclosing a flaw in Threshold ML-DSA's reference codeWhile reviewing the first fully ML-DSA-compatible threshold signature scheme, we identified a state-reuse issue in its reference implementation that could expose a signer's secret share. We worked with the team at PQShield on a fix, merged September 5.
- A review of SHRINCSSHRINCS offers Bitcoin a path to post-quantum security without a blocksize increase, but its stateful design shifts new security risks to wallets and custodians. We examine the tradeoffs between efficiency, complexity, and Bitcoin's conservative security model.