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12 commits

Author SHA1 Message Date
7e81a00291 feat(smt): export get_value() in the trait 2024-09-04 16:52:56 -06:00
1cea08c2ff 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.
2024-09-04 16:52:43 -06:00
Paul-Henry Kajfasz
ad0f472708
Updated Makefile and Readme 2024-08-16 15:07:27 -07:00
Dominik Schmid
2a0ae70645 feature: adding serialization to the SMT (#304) 2024-04-21 01:14:18 -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
Andrey Khmuro
cd4525c7ad refactor: update repo to be compatible with Winterfell 0.8 (#275) 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
da12fd258a Add missing methods to Smt (#268) 2024-02-14 11:52:40 -08:00
Philippe Laferrière
1cdd3dbbfa Add methods to Smt necessary for VM tests (#264)
* Smt::inner_nodes

* Add conversion Smt -> MerkleStore

* add docstring to `Smt`

* add to docstring

* fmt

* add `leaves()` method to `Smt`

* add `kv_pairs` functions

* rewrite `into_elements()` in terms of `into_kv_pairs()`

* change docstring
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