🔨 util script to extract signer from authdata

script/utils/ExtractSignerAuthData.s.sol

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+// SPDX-License-Identifier: APACHE-2.0
+pragma solidity >=0.8.19 <0.9.0;
+
+import { BaseScript } from "script/Base.s.sol";
+import { SignerVaultWebAuthnP256R1 } from "src/utils/SignerVaultWebAuthnP256R1.sol";
+
+/// @title  ExtractSignerAuthData
+/// @notice Extract a signer from the auth data
+contract ExtractSignerAuthData is BaseScript {
+    function extractSignerAuthData(bytes calldata authData)
+        external
+        pure
+        returns (bytes memory credId, bytes32 credIdHash, uint256 pubkeyX, uint256 pubkeyY)
+    {
+        return SignerVaultWebAuthnP256R1.extractSignerFromAuthData(authData);
+    }
+
+    function run()
+        external
+        view
+        returns (
+            bytes memory credId,
+            bytes32 credIdHash,
+            uint256 pubkeyX,
+            bytes32 pubkeyXHex,
+            uint256 pubkeyY,
+            bytes32 pubkeyYHex
+        )
+    {
+        // 1. get the auth data
+        bytes memory authData = vm.envBytes("AUTH_DATA");
+
+        // 2. extract the signer from the auth data
+        (credId, credIdHash, pubkeyX, pubkeyY) = ExtractSignerAuthData(address(this)).extractSignerAuthData(authData);
+
+        // 3. convert the pubkey coordinates to hex
+        pubkeyXHex = bytes32(pubkeyX);
+        pubkeyYHex = bytes32(pubkeyY);
+    }
+}