Tight CCS description to NIMFS transcript #49
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hero78119
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Jan 3, 2024
* refactor: Refactor Digestible trait - Removed `to_bytes` method from the `Digestible` trait in `src/digest.rs` file. * fix: Make bincode serialization in digest.rs more rigorous - Updated `bincode::serialize_into(byte_sink, self)` with a configurable version to enable "little endian" and "fixint encoding" options. - Added a comment in `src/digest.rs` about `bincode`'s recursive length-prefixing during serialization. * refactor: Refactor digest computation using `OnceCell` and `DigestComputer` This gives up on a generic builder and instead uses an idempotent `OnceCell` + a generic digest computer to populate the digest of a structure. - this shows how to set up digest computation so it doesn't depend on the digest field, - the digest can't be set twice, - an erroneous digest can't be inferred from the serialized data. In Details: - Overhauled digest functionality in multiple files by replacing `DigestBuilder` with `DigestComputer`, significantly altering the handling of hashes. - Incorporated `once_cell::sync::OnceCell` and `ff::PrimeField` dependencies to improve performance and simplify code. - Modified `VerifierKey` and `RunningClaims` structures to include a `OnceCell` for digest, leading to a change in function calls and procedures. - Simplified `setup_running_claims` by removing error handling and directly returning `RunningClaims` type. - Adapted test functions according to the changes including the removal of unnecessary unwrapping in certain scenarios. - Updated Cargo.toml with the new dependency `once_cell` version `1.18.0`. * refactor: rename pp digest in VerifierKey to pp_digest * feat: add a digest to R1CSShape * fix: Small issues - Introduced a new assertion within the `write_bytes` method of `src/supernova/mod.rs` for validating whether the `claims` are empty - Improved code comment clarity regarding the creation of a running claim in `src/supernova/mod.rs`.
Ethan-000
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Jun 2, 2024
* Add DigestBuilder. * Make digest and claims private. * refactor: Refactor DigestBuilder - Refactored `src/digest.rs` to replace `Vec<u8>` storage with dedicated Write I/O. - Removed optional `hasher` and introduced dedicated factory method. - Reworked digest computation and mapping into separate functions. - Merged build and digest computation to enhance coherence. - Improved type safety with Result error propagation. * Propagate DigestBuilder changes. * Fix tests. * Correct assertion for OutputSize scale. * Remove commented. * Remove dbg!. * Fixup rebase. --------- Co-authored-by: porcuquine <[email protected]> Co-authored-by: François Garillot <[email protected]> feat: add a digest to R1CSShape (privacy-scaling-explorations#49) * refactor: Refactor Digestible trait - Removed `to_bytes` method from the `Digestible` trait in `src/digest.rs` file. * fix: Make bincode serialization in digest.rs more rigorous - Updated `bincode::serialize_into(byte_sink, self)` with a configurable version to enable "little endian" and "fixint encoding" options. - Added a comment in `src/digest.rs` about `bincode`'s recursive length-prefixing during serialization. * refactor: Refactor digest computation using `OnceCell` and `DigestComputer` This gives up on a generic builder and instead uses an idempotent `OnceCell` + a generic digest computer to populate the digest of a structure. - this shows how to set up digest computation so it doesn't depend on the digest field, - the digest can't be set twice, - an erroneous digest can't be inferred from the serialized data. In Details: - Overhauled digest functionality in multiple files by replacing `DigestBuilder` with `DigestComputer`, significantly altering the handling of hashes. - Incorporated `once_cell::sync::OnceCell` and `ff::PrimeField` dependencies to improve performance and simplify code. - Modified `VerifierKey` and `RunningClaims` structures to include a `OnceCell` for digest, leading to a change in function calls and procedures. - Simplified `setup_running_claims` by removing error handling and directly returning `RunningClaims` type. - Adapted test functions according to the changes including the removal of unnecessary unwrapping in certain scenarios. - Updated Cargo.toml with the new dependency `once_cell` version `1.18.0`. * refactor: rename pp digest in VerifierKey to pp_digest * feat: add a digest to R1CSShape * fix: Small issues - Introduced a new assertion within the `write_bytes` method of `src/supernova/mod.rs` for validating whether the `claims` are empty - Improved code comment clarity regarding the creation of a running claim in `src/supernova/mod.rs`. Co-authored-by: porcuquine <[email protected]>
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Originally posted by @oskarth in #43 (comment)
We should discuss whether this is needed or adds any kind of extra security to the protocol.
For now is removed.
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