feat(cast): add recover-authority for EIP7702 Authorization

crates/cast/Cargo.toml

@@ -53,6 +53,7 @@ alloy-signer.workspace = true
 alloy-sol-types.workspace = true
 alloy-transport.workspace = true
 alloy-ens = { workspace = true, features = ["provider"] }
+alloy-eips.workspace = true
 
 op-alloy-flz.workspace = true
 op-alloy-consensus = { workspace = true, features = ["alloy-compat"] }
@@ -98,4 +99,4 @@ mimalloc = ["foundry-cli/mimalloc"]
 tracy-allocator = ["foundry-cli/tracy-allocator"]
 aws-kms = ["foundry-wallets/aws-kms"]
 gcp-kms = ["foundry-wallets/gcp-kms"]
-isolate-by-default = ["foundry-config/isolate-by-default"]
+isolate-by-default = ["foundry-config/isolate-by-default"]

crates/cast/src/args.rs

@@ -5,6 +5,7 @@ use crate::{
 };
 use alloy_consensus::transaction::{Recovered, SignerRecoverable};
 use alloy_dyn_abi::{DynSolValue, ErrorExt, EventExt};
+use alloy_eips::eip7702::SignedAuthorization;
 use alloy_ens::{namehash, ProviderEnsExt};
 use alloy_primitives::{eip191_hash_message, hex, keccak256, Address, B256};
 use alloy_provider::Provider;
@@ -723,6 +724,10 @@ pub async fn run_command(args: CastArgs) -> Result<()> {
                 sh_println!("{}", serde_json::to_string_pretty(&tx)?)?;
             }
         }
+        CastSubcommand::RecoverAuthority { auth } => {
+            let auth: SignedAuthorization = serde_json::from_str(&auth).unwrap();
+            sh_println!("{}", auth.recover_authority()?)?;
+        }
         CastSubcommand::TxPool { command } => command.run().await?,
         CastSubcommand::DAEstimate(cmd) => {
             cmd.run().await?;

crates/cast/src/opts.rs

@@ -1070,6 +1070,10 @@ pub enum CastSubcommand {
     #[command(visible_aliases = &["dt", "decode-tx"])]
     DecodeTransaction { tx: Option<String> },
 
+    /// Recovery an EIP-7702 authority from a Authorization JSON string.
+    #[command(visible_aliases = &["decode-auth"])]
+    RecoverAuthority { auth: String },
+
     /// Extracts function selectors and arguments from bytecode
     #[command(visible_alias = "sel")]
     Selectors {

crates/cast/tests/cli/main.rs

@@ -2852,3 +2852,18 @@ casttest!(tx_raw_opstack_deposit, |_prj, cmd| {
 
 "#]]);
 });
+
+casttest!(recover_authority, |_prj, cmd| {
+    let auth = r#"{
+        "chainId": "0x1",
+        "address": "0xb684710e6d5914ad6e64493de2a3c424cc43e970",
+        "nonce": "0x3dc1",
+        "yParity": "0x1",
+        "r": "0x2f15ba55009fcd3682cd0f9c9645dd94e616f9a969ba3f1a5a2d871f9fe0f2b4",
+        "s": "0x53c332a83312d0b17dd4c16eeb15b1ff5223398b14e0a55c70762e8f3972b7a5"
+    }"#;
+    cmd.args(["recover-authority", auth]).assert_success().stdout_eq(str![[r#"
+0x17816E9A858b161c3E37016D139cf618056CaCD4
+
+"#]]);
+});