feat: create 6492 signature

src/create.rs

@@ -0,0 +1,16 @@
+use alloy::{
+    primitives::{b256, Address, Bytes, B256},
+    sol_types::SolValue,
+};
+
+pub const ERC6492_MAGIC_BYTES: B256 =
+    b256!("6492649264926492649264926492649264926492649264926492649264926492");
+
+pub fn create_erc6492_signature(factory: Address, factory_data: Bytes, signature: Bytes) -> Bytes {
+    (
+        (factory, factory_data, signature).abi_encode_params(),
+        ERC6492_MAGIC_BYTES,
+    )
+        .abi_encode_packed()
+        .into()
+}

src/lib.rs

@@ -7,6 +7,8 @@ use alloy::{
     transports::{Transport, TransportErrorKind},
 };
 
+pub mod create;
+
 const SUCCESS_RESULT: u8 = 0x01;
 sol! {
   contract ValidateSigOffchain {