[token-2022] Add transfer with fee logic with split proof context acc…

…ounts (#5258) * add constructor for transfer with fee and split contexts * update processor for transfer with fee and split context minus proof verification and generation * add main logic for proof verification * add main logic for proof generation in client * update token client for transfer with fee using split contexts * update tests for transfer with fee using split contexts * clippy * Apply suggestions from code review Co-authored-by: Jon Cinque <[email protected]> * remove unnecessary print * remove unnecessary generic parameter * rename transfer info constructor functions and add clarifying comments * rename `verify_and_generate` to `verify_and_extract` --------- Co-authored-by: Jon Cinque <[email protected]>
solana-labs · Sep 18, 2023 · 5fafd5f · 5fafd5f
1 parent 533a2e9
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diff --git a/Cargo.lock b/Cargo.lock
diff --git a/token/client/Cargo.toml b/token/client/Cargo.toml
@@ -9,6 +9,7 @@ version = "0.6.0"
 
 [dependencies]
 async-trait = "0.1"
+curve25519-dalek = "3.2.1"
 futures = "0.3.28"
 futures-util = "0.3"
 solana-banks-interface = "1.16.3"

diff --git a/token/client/src/lib.rs b/token/client/src/lib.rs
@@ -3,4 +3,10 @@ pub mod client;
 pub mod output;
 pub mod token;
 
+/// Helper functions to generate split zero-knowledge proofs for confidential transfers.
+///
+/// The logic in this submodule should belong to the `solana-zk-token-sdk` and will be removed with
+/// an upgrade to the Solana program in the future.
+pub mod proof_generation;
+
 pub use spl_token_2022;