Merge pull request #15 from originalworks/expose-sign-typed-data

Expose sign typed data

Author: cezary-stroczynski

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "ow_wallet_adapter"
-version = "0.1.6"
+version = "0.1.7"
 edition = "2024"
 license = "MIT OR Apache-2.0"
 description = "Original Works EVM wallet adapter library with KMS integration"
@@ -10,7 +10,9 @@ readme = "README.md"
 
 [dependencies]
 alloy = "1.6.3"
+alloy-signer = { version = "1.8.3", features = ["eip712"] }
 alloy-signer-aws = "1.6.3"
+alloy-sol-types = "1.5.7"
 anyhow = "1.0.101"
 aws-config = "1.8.13"
 aws-sdk-kms = "1.99.0"

Cargo.toml

@@ -1,3 +1,4 @@
+use crate::OwWalletConfig;
 use alloy::eips::BlockId;
 use alloy::network::EthereumWallet;
 use alloy::primitives::{Address, B256};
@@ -7,13 +8,13 @@ use alloy::providers::fillers::{
 use alloy::providers::{Provider, ProviderBuilder};
 use alloy::signers::Signer;
 use alloy::signers::local::PrivateKeySigner;
+use alloy::sol_types::SolStruct;
 use alloy_signer_aws::AwsSigner;
+use alloy_sol_types::Eip712Domain;
 use anyhow::Context;
 use aws_config::BehaviorVersion;
 use aws_config::meta::region::RegionProviderChain;
 
-use crate::OwWalletConfig;
-
 pub struct OwWallet {
     pub use_kms: bool,
     pub wallet: EthereumWallet,
@@ -134,4 +135,20 @@ impl OwWallet {
         }
         Ok(signature)
     }
+
+    pub async fn sign_typed_data<T: SolStruct + Send + Sync>(
+        &self,
+        payload: &T,
+        domain: &Eip712Domain,
+    ) -> anyhow::Result<alloy::signers::Signature> {
+        let signature;
+        if self.use_kms {
+            let aws_signer = self.try_aws_signer()?;
+            signature = aws_signer.sign_typed_data(payload, domain).await?;
+        } else {
+            let private_key_signer = self.try_private_key_signer()?;
+            signature = private_key_signer.sign_typed_data(payload, domain).await?;
+        }
+        Ok(signature)
+    }
 }