feat: add support for typed transaction signer

CODEOWNERS

@@ -1 +1,3 @@
 * @welthee/backend
+
+@0xSyndr

README.md

@@ -10,21 +10,24 @@ offered by the official go-ethereum library.
 ## Import
 
 ```go
-import "github.com/welthee/go-ethereum-aws-kms-tx-signer/v2"
+import "github.com/0xSyndr/go-ethereum-aws-kms-tx-signer/v2"
 ```
 
 ## Usage
+
 In order to sign Ethereum transactions with an AWS KMS key you need to create a KMS key in AWS, and grant your
 application's principal access to use it.
 
 Then, modify your Ethereum transactor code to use the `bind.TransactOpts` that this library returns.
 
 ### Create an AWS KMS key
+
 Create an AWS KMS Assymetric key with key usage of `SIGN_VERIFY` and spec `ECC_SECG_P256K1`. Make sure that you add an
 appropriate key policy granting your code the following permissions:
 `kms:GetPublicKey`, `kms:Sign`.
 
 Example key policy:
+
 ```json
 {
   "Sid": "AllowSignAndGetPublicKey",
@@ -37,17 +40,16 @@ Example key policy:
       "arn:aws:iam::444455556666:root"
     ]
   },
-  "Action": [
-    "kms:Sign",
-    "kms:GetPublicKey"
-  ]
+  "Action": ["kms:Sign", "kms:GetPublicKey"]
 }
 ```
 
 ### Your transactor code
+
 The `abigen` tool generates bindings that are able to directly operate with the `*bind.TransactOpts` type.
 
 For instance an IERC20 transactor integrated with the KMS signer would look like this:
+
 ```go
 var client *ethclient.client
 var kmsSvc *kms.KMS
@@ -60,18 +62,25 @@ transactOpts := ethawskmssigner.NewAwsKmsTransactorWithChainID(kmsSvc, keyId, ch
 
 tx, err := transactor.Transfer(transactOpts, toAddress, big.NewInt(amountInt))
 ```
+
 Note how the `ethawskmssigner.NewAwsKmsTransactorWithChainID(...)` returns a ready to use `*bind.TransactOpts`.
 
 In order to use in manually constructed transactions, you can use the Signer to sign your transaction yourself.
 Example:
+
 ```go
 transactOpts, _ := ethawskmssigner.NewAwsKmsTransactorWithChainID(kmsSvc, keyId, clChainId)
 tx := types.NewTransaction(nonce, toAddress, value, gasLimit, gasPrice, nil)
 signedTx, _ := transactOpts.Signer(transactOpts.From, tx)
 err = client.SendTransaction(context.TODO(), signedTx)
 ```
 
+# See also
+
+- [typed_data_signer_test.go](./typed_data_signer_test.go) for an example of how to sign typed data.
+
 # Further reading
-* [Signing and Verifying Ethereum Signatures](https://yos.io/2018/11/16/ethereum-signatures/)
-* [EIP-155: Simple replay attack protection](https://eips.ethereum.org/EIPS/eip-155)
-* [The Dark Side of the Elliptic Curve - Signing Ethereum Transactions with AWS KMS in JavaScript](https://luhenning.medium.com/the-dark-side-of-the-elliptic-curve-signing-ethereum-transactions-with-aws-kms-in-javascript-83610d9a6f81)
+
+- [Signing and Verifying Ethereum Signatures](https://yos.io/2018/11/16/ethereum-signatures/)
+- [EIP-155: Simple replay attack protection](https://eips.ethereum.org/EIPS/eip-155)
+- [The Dark Side of the Elliptic Curve - Signing Ethereum Transactions with AWS KMS in JavaScript](https://luhenning.medium.com/the-dark-side-of-the-elliptic-curve-signing-ethereum-transactions-with-aws-kms-in-javascript-83610d9a6f81)

go.mod

@@ -1,43 +1,57 @@
-module github.com/welthee/go-ethereum-aws-kms-tx-signer/v2
+module github.com/0xSyndr/go-ethereum-aws-kms-tx-signer
 
 go 1.20
 
 require (
-	github.com/aws/aws-sdk-go-v2 v1.20.0
-	github.com/aws/aws-sdk-go-v2/config v1.18.32
+	github.com/aws/aws-sdk-go-v2 v1.21.2
+	github.com/aws/aws-sdk-go-v2/config v1.18.45
 	github.com/aws/aws-sdk-go-v2/service/kms v1.24.1
-	github.com/ethereum/go-ethereum v1.12.0
+	github.com/ethereum/go-ethereum v1.13.5
 	github.com/pkg/errors v0.9.1
+	github.com/stretchr/testify v1.8.4
 )
 
 require (
-	github.com/VictoriaMetrics/fastcache v1.10.0 // indirect
-	github.com/aws/aws-sdk-go-v2/credentials v1.13.31 // indirect
-	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.13.7 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/configsources v1.1.37 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.4.31 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/ini v1.3.38 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.9.31 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sso v1.13.1 // indirect
-	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.15.1 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sts v1.21.1 // indirect
-	github.com/aws/smithy-go v1.14.0 // indirect
+	github.com/Microsoft/go-winio v0.6.1 // indirect
+	github.com/aws/aws-sdk-go-v2/credentials v1.13.43 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.13.13 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.1.43 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.4.37 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/ini v1.3.45 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.9.37 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sso v1.15.2 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.17.3 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sts v1.23.2 // indirect
+	github.com/aws/smithy-go v1.15.0 // indirect
+	github.com/bits-and-blooms/bitset v1.7.0 // indirect
 	github.com/btcsuite/btcd/btcec/v2 v2.2.0 // indirect
+	github.com/consensys/bavard v0.1.13 // indirect
+	github.com/consensys/gnark-crypto v0.12.1 // indirect
+	github.com/crate-crypto/go-kzg-4844 v0.7.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/deckarep/golang-set/v2 v2.1.0 // indirect
 	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
+	github.com/ethereum/c-kzg-4844 v0.4.0 // indirect
 	github.com/fsnotify/fsnotify v1.6.0 // indirect
 	github.com/gballet/go-libpcsclite v0.0.0-20191108122812-4678299bea08 // indirect
 	github.com/go-ole/go-ole v1.2.6 // indirect
 	github.com/go-stack/stack v1.8.1 // indirect
 	github.com/google/uuid v1.3.0 // indirect
 	github.com/gorilla/websocket v1.5.0 // indirect
-	github.com/holiman/uint256 v1.2.2-0.20230321075855-87b91420868c // indirect
-	github.com/mattn/go-runewidth v0.0.13 // indirect
+	github.com/holiman/uint256 v1.2.3 // indirect
+	github.com/mmcloughlin/addchain v0.4.0 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/shirou/gopsutil v3.21.11+incompatible // indirect
-	github.com/tklauser/go-sysconf v0.3.10 // indirect
-	github.com/tklauser/numcpus v0.5.0 // indirect
+	github.com/supranational/blst v0.3.11 // indirect
+	github.com/tklauser/go-sysconf v0.3.12 // indirect
+	github.com/tklauser/numcpus v0.6.1 // indirect
 	github.com/yusufpapurcu/wmi v1.2.2 // indirect
-	golang.org/x/crypto v0.1.0 // indirect
-	golang.org/x/sys v0.7.0 // indirect
-	gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce // indirect
+	golang.org/x/crypto v0.17.0 // indirect
+	golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect
+	golang.org/x/mod v0.12.0 // indirect
+	golang.org/x/sync v0.3.0 // indirect
+	golang.org/x/sys v0.15.0 // indirect
+	golang.org/x/tools v0.13.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	rsc.io/tmplfunc v0.0.3 // indirect
 )