Comments (3)
Theoretically, you could use Winterfell to build recursive proofs even now - but it will pretty difficult and the results will probably be unsatisfactory. There are two reasons for this.
First, for recursive proofs to be practical, we need to use arithmetization-friendly hash functions when building base-layer proofs. Winterfell currently supports only SHA256 and BLAKE3 hash functions, and these are not arithmetization-friendly. There is an issue (#52) to add support for Rescue hash function (or make the structure more generic). Once this is done, Recursive proofs in Winterfell will be practical.
The second part is related to putting together AIR for a STARK verifier (basically, describing the circuit of the verifier). I don't think there is a good way to do it generically (i.e., the AIR would need to be tailored to a specific project) - though, there is probably a good way to provide most common components (e.g., AIR for FRI verifier).
One other way to do recursive STARK proofs is by using a STARK VM. There are a couple of them in development right now. The one based on Winterfell is Miden VM - though it doesn't support recursive proofs yet either.
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@morganthomas I am curious what kind of scenario you are handling that need stark to verify the snark's proof. I am doing the almost opposite verification, using plonk gate to write the circuits which verify the stark's proof, as a kinda mixed proof system for Rollup.
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Closing as #52 has been closed by #111.
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Related Issues (20)
- v0.6 release goals HOT 1
- Proposal: Extending StarkField to any finite field with large 2-adicity
- "Make sure layer queries hash into leaves of layer proof" HOT 1
- Potential vulnerability if not checking proof security level HOT 5
- `RandomCoin` as a trait HOT 2
- Safer implementation of the uninit_vector function HOT 1
- v0.7 release goals
- Abstract away Merkle trees with VectorCommitment scheme
- Support custom implementations of Trace LDE HOT 1
- Support custom implementations of the Constraint Evaluator HOT 5
- Enable proven security computations for `no-std` HOT 1
- Support for Tip5 HOT 5
- Simplifying constraint composition polynomial HOT 5
- Calculating root of unity (R, R^2) HOT 4
- panic in merkle's verify_batch HOT 1
- catch a panic in merkle proof verification HOT 1
- Update proven security to include IOP terms HOT 2
- 🅆1🄽🅃3🅁🅂0🄻🄳13🅁47
- RandomCoin trait simplification HOT 1
- Will it be made into zkvm in the future? HOT 1
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