Commit graph

19 commits

Author SHA1 Message Date
4c19f364ca feat: impl hashing Merkle leaves that don't yet exist
This commit implements 'prospective leaf hashing' -- computing what the
hash of a sparse Merkle tree leaf *would* be for a key-value insertion
without actually performing that insertion.

For SimpleSmt, this is trivial, since the leaf hash and its payload are
the same.

For the full Smt, the new leaf payload (and thus, its hash) depend on
the existing payload in that leaf, making the prospective hash logic a
combination of the normal insertion logic and the normal hash logic. But
because we're only interested in the hash and not the intermediate
value, we can skip allocations and sorts for the payload itself.
2024-08-22 13:55:39 -06:00
Paul-Henry Kajfasz
ad0f472708
Updated Makefile and Readme 2024-08-16 15:07:27 -07:00
Augusto Hack
c0743adac9
Rpo256: Add RpoDigest conversions (#311) 2024-05-12 03:09:21 +08:00
Dominik Schmid
2a0ae70645 feature: adding serialization to the SMT (#304) 2024-04-21 01:14:18 -07:00
Bobbin Threadbare
4bf087daf8
fix: decrement leaf count in simple SMT when inserting empty value (#303) 2024-04-02 13:01:00 -07:00
polydez
b4dc373925
feat: add leaf count to SimpleSmt (#302) 2024-04-02 12:07:00 -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
119c7e2b6d SmtProof: add accessors (#276)
* add accessors

* fmt

* comments
2024-02-14 11:52:40 -08:00
Philippe Laferrière
45e7e78118 Clone (#274) 2024-02-14 11:52:40 -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
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
Bobbin Threadbare
a933ff2fa0 refactor: remove obsolete traits 2024-02-14 11:52:40 -08:00
Philippe Laferrière
8ea37904e3 Introduce SparseMerkleTree trait (#245) 2024-02-14 11:52:40 -08:00