Commit graph

10 commits

Author SHA1 Message Date
de19e0e052 feat(smt): export get_value() in the trait 2024-09-05 15:23:14 -06:00
ca3c79e818 feat(smt): impl constructing leaves that don't yet exist
This commit implements 'prospective leaf construction' -- computing
sparse Merkle tree leaves for a key-value insertion without actually
performing that insertion.

For SimpleSmt, this is trivial, since the leaf type is simply the value
being inserted.

For the full Smt, the new leaf payload depends on the existing payload
in that leaf. Since almost all leaves are very small, we can just clone
the leaf and modify a copy.

This will allow us to perform more general prospective changes on Merkle
trees.
2024-09-05 15:23:14 -06:00
Paul-Henry Kajfasz
ad0f472708
Updated Makefile and Readme 2024-08-16 15:07:27 -07:00
Paul Schoenfelder
999a64fca6 chore: handle deprecations in winterfell 0.8.3 release 2024-03-17 16:18:23 -04:00
Augusto Hack
dbab0e9aa9
fix: clippy warnings (#280) 2024-02-21 20:55:02 -08:00
Philippe Laferrière
a9475b2a2d reexport (#273) 2024-02-14 11:52:40 -08:00
Philippe Laferrière
e55b3ed2ce Introduce SmtProof (#270)
* add conversion for `SmtLeaf`

* introduce `SmtProof` scaffolding

* implement `verify_membership()`

* SmtLeaf: knows its index

* `SmtLeaf::index`

* `SmtLeaf::get_value()` returns an Option

* fix `verify_membership()`

* impl `SmtProof::get`

* impl `into_parts()`

* `SmtProof::compute_root`

* use `SmtProof` in `Smt::open`

* `SmtLeaf` constructors

* Vec

* impl `Error` for `SmtLeafError`

* fix std Error

* move Word/Digest conversions to LeafIndex

* `SmtProof::new()` returns an error

* `SparseMerkleTree::path_and_leaf_to_opening`

* `SmtLeaf`: serializable/deserializable

* `SmtProof`: serializable/deserializable

* add tests for SmtLeaf serialization

* move `SmtLeaf` to submodule

* use constructors internally

* fix docs

* Add `Vec`

* add `Vec` to tests

* no_std use statements

* fmt

* `Errors`: make heading

* use `SMT_DEPTH`

* SmtLeaf single case: check leaf index

* Multiple case: check consistency with leaf index

* use `pub(super)` instead of `pub(crate)`

* use `pub(super)`

* `SmtLeaf`: add `num_entries()` accessor

* Fix `SmtLeaf` serialization

* improve leaf serialization tests
2024-02-14 11:52:40 -08:00
Philippe Laferrière
3d71a9b59b Smt: remove inner nodes when removing value (#269) 2024-02-14 11:52:40 -08:00
Philippe Laferrière
5596db7868 Implement Smt struct (replacement to TieredSmt) (#254) 2024-02-14 11:52:40 -08:00
Philippe Laferrière
8ea37904e3 Introduce SparseMerkleTree trait (#245) 2024-02-14 11:52:40 -08:00