diff --git a/script-meta-v2.json b/script-meta-v2.json
index cb91887..6df4d23 100644
--- a/script-meta-v2.json
+++ b/script-meta-v2.json
@@ -90,11 +90,11 @@
   },
   "script-sign.rs": {
     "script_name": "script-sign.rs",
-    "script_length": 16506,
-    "script_sha256": "d8dc82553a5300ecee3364ed04596163295139f8b18e0d1a95b89ea6540ebfe5",
+    "script_length": 4457,
+    "script_sha256": "9b688c4446a13d0d0013220a41984fdb4288c99bc5d8c80b641ec7ac04f7a6c0",
     "script_full_url": "https://git.hatter.ink/rust-scripts/scriptbase/raw/branch/main/script-sign-rs/src/main.rs",
     "publish_time": 1737272563311,
-    "update_time": 1737272563311
+    "update_time": 1737481447995
   },
   "sync.rs": {
     "script_name": "sync.rs",
diff --git a/script-meta.json b/script-meta.json
index 379506f..a27d9a0 100644
--- a/script-meta.json
+++ b/script-meta.json
@@ -51,8 +51,8 @@
   },
   "script-sign-rs": {
     "script_name": "script-sign-rs",
-    "script_length": 16506,
-    "script_sha256": "d8dc82553a5300ecee3364ed04596163295139f8b18e0d1a95b89ea6540ebfe5"
+    "script_length": 4457,
+    "script_sha256": "9b688c4446a13d0d0013220a41984fdb4288c99bc5d8c80b641ec7ac04f7a6c0"
   },
   "sync-rs": {
     "script_name": "sync-rs",
diff --git a/script-sign-rs/Cargo.lock b/script-sign-rs/Cargo.lock
index b9bbf16..33a98a3 100644
--- a/script-sign-rs/Cargo.lock
+++ b/script-sign-rs/Cargo.lock
@@ -644,11 +644,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f3cb5ba0dc43242ce17de99c180e96db90b235b8a9fdc9543c96d2209116bd9f"
 
 [[package]]
-name = "script-sign-rs"
+name = "script-sign"
 version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "187af8146515de8a5cde0828910084742ebd4e8e5898a51aea83eeb3099d482e"
 dependencies = [
  "base64",
- "clap",
  "digest",
  "ecdsa",
  "hex",
@@ -662,6 +663,15 @@ dependencies = [
  "simpledateformat",
 ]
 
+[[package]]
+name = "script-sign-rs"
+version = "0.1.0"
+dependencies = [
+ "clap",
+ "rust_util",
+ "script-sign",
+]
+
 [[package]]
 name = "sec1"
 version = "0.7.3"
diff --git a/script-sign-rs/Cargo.toml b/script-sign-rs/Cargo.toml
index e7485bd..06b288b 100644
--- a/script-sign-rs/Cargo.toml
+++ b/script-sign-rs/Cargo.toml
@@ -4,16 +4,6 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-base64 = "0.22.1"
 clap = { version = "4.5.23", features = ["derive"] }
-digest = "0.10.7"
-ecdsa = "0.16.9"
-hex = "0.4.3"
-p256 = "0.13.2"
-p384 = "0.13.0"
-regex = "1.11.1"
 rust_util = "0.6.47"
-serde = { version = "1.0.217", features = ["derive"] }
-serde_json = "1.0.134"
-sha2 = "0.10.8"
-simpledateformat = "0.1.4"
+script-sign = "0.1"
diff --git a/script-sign-rs/src/main.rs b/script-sign-rs/src/main.rs
index acbb557..cf4c927 100755
--- a/script-sign-rs/src/main.rs
+++ b/script-sign-rs/src/main.rs
@@ -2,43 +2,17 @@
 
 //! ```cargo
 //! [dependencies]
-//! base64 = "0.22.1"
 //! clap = { version = "4.5.23", features = ["derive"] }
-//! digest = "0.10.7"
-//! ecdsa = "0.16.9"
-//! hex = "0.4.3"
-//! p256 = "0.13.2"
-//! p384 = "0.13.0"
-//! regex = "1.11.1"
 //! rust_util = "0.6.47"
-//! serde = { version = "1.0.217", features = ["derive"] }
-//! serde_json = "1.0.134"
-//! sha2 = "0.10.8"
-//! simpledateformat = "0.1.4"
+//! script-sign = "0.1"
 //! ```
 
-use base64::engine::general_purpose::STANDARD as standard_base64;
-use base64::Engine;
 use clap::Parser;
-use digest::Digest;
-use ecdsa::Signature;
-use ecdsa::VerifyingKey;
-use p256::ecdsa::signature::hazmat::PrehashVerifier;
-use p256::NistP256;
-use p384::NistP384;
-use regex::Regex;
-use rust_util::{
-    debugging, failure, failure_and_exit, information, opt_result, opt_value_result, simple_error,
-    success, util_cmd, warning, XResult,
-};
-use serde::{Deserialize, Serialize};
-use sha2::Sha256;
-use std::collections::HashMap;
+use rust_util::{failure, failure_and_exit, information, success, warning};
+use script_sign::{KeyMap, Script};
 use std::fs;
 use std::path::PathBuf;
 
-const SIGNATURE_PREFIX: &str = "// @SCRIPT-SIGNATURE-";
-
 /// Script signing tool
 #[derive(Parser, Debug)]
 #[command(version, about, long_about = None, bin_name = "script-sign.rs")]
@@ -62,7 +36,7 @@ fn main() {
         failure_and_exit!("Argument --verify or --sign must assigned.");
     }
 
-    let key_map = KeyMap::default().unwrap();
+    let key_map = KeyMap::system().unwrap();
     let total_scripts = args.scripts.len();
     for (i, script_path) in args.scripts.iter().enumerate() {
         information!(
@@ -159,338 +133,3 @@ fn main() {
         }
     }
 }
-
-#[derive(Debug, Eq, PartialEq)]
-enum ScriptSignatureAlgorithm {
-    RS256,
-    ES256,
-    ES384,
-    ES521,
-}
-
-#[derive(Debug)]
-struct ScriptSignature {
-    key_id: String,
-    algorithm: ScriptSignatureAlgorithm,
-    time: String,
-    signature: Vec<u8>,
-}
-
-#[derive(Debug)]
-struct Script {
-    content_lines: Vec<String>,
-    signature: Option<ScriptSignature>,
-}
-
-#[derive(Debug, Serialize, Deserialize)]
-struct KeyMap {
-    key_map: HashMap<String, String>,
-}
-
-#[allow(dead_code)]
-#[derive(Debug, Deserialize)]
-struct CardEcSignResult {
-    pub algorithm: String,
-    pub hash_hex: String,
-    pub signed_data_base64: String,
-    pub signed_data_hex: String,
-    pub slot: String,
-}
-
-impl KeyMap {
-    fn default() -> XResult<Self> {
-        let signing_keys = r##"
-{
-  "yk-r1": "04dd3eebd906c9cf00b08ec29f7ed61804d1cc1d1352d9257b628191e08fc3717c4fae3298cd5c4829cec8bf3a946e7db60b7857e1287f6a0bae6b3f2342f007d0"
-}
-"##;
-        let key_map: HashMap<String, String> = serde_json::from_str(signing_keys).unwrap();
-        Ok(KeyMap { key_map })
-    }
-
-    fn find(&self, key_id: &str) -> Option<&String> {
-        self.key_map.get(key_id)
-    }
-}
-
-impl ScriptSignatureAlgorithm {
-    fn try_from(algo: &str) -> XResult<Self> {
-        let upper_algo = algo.to_uppercase();
-        Ok(match upper_algo.as_str() {
-            "RS256" => Self::RS256,
-            "ES256" => Self::ES256,
-            "ES384" => Self::ES384,
-            "ES521" => Self::ES521,
-            _ => return simple_error!("Not valid algorithm: {}", algo),
-        })
-    }
-
-    fn as_str(&self) -> &'static str {
-        match self {
-            ScriptSignatureAlgorithm::RS256 => "RS256",
-            ScriptSignatureAlgorithm::ES256 => "ES256",
-            ScriptSignatureAlgorithm::ES384 => "ES384",
-            ScriptSignatureAlgorithm::ES521 => "ES521",
-        }
-    }
-}
-
-impl ScriptSignature {
-    fn parse(script_signature_line: &str) -> XResult<ScriptSignature> {
-        // e.g. // @SCRIPT-SIGNATURE-V1: <key-id>.<algotirhm>.<time>.<signature-value-in-base64>
-        let script_signature_v1_regex = Regex::new(
-            r##"^\s*//\s*@SCRIPT-SIGNATURE-V1:\s*([a-zA-Z0-9-_]+)\.([a-zA-Z0-9]+)\.([0-9a-zA-Z\-+:]+)\.([a-zA-Z0-9\-+_/=]+)\s*$"##).unwrap();
-        let script_signature_v1_captures = opt_value_result!(
-            script_signature_v1_regex.captures(script_signature_line),
-            "Parse script signature failed: {}",
-            script_signature_line
-        );
-        let (_, [key_id, algorithm, time, signature]) = script_signature_v1_captures.extract();
-
-        let signature = opt_result!(
-            standard_base64.decode(signature),
-            "Parse script signature failed, decode signature failed: {}"
-        );
-        Ok(ScriptSignature {
-            key_id: key_id.to_string(),
-            algorithm: ScriptSignatureAlgorithm::try_from(algorithm)?,
-            time: time.to_string(),
-            signature,
-        })
-    }
-
-    fn as_string(&self) -> String {
-        let mut s = String::with_capacity(245);
-        s.push_str(SIGNATURE_PREFIX);
-        s.push_str("V1: ");
-        s.push_str(&self.key_id);
-        s.push('.');
-        s.push_str(self.algorithm.as_str());
-        s.push('.');
-        s.push_str(&self.time);
-        s.push('.');
-        s.push_str(&standard_base64.encode(&self.signature));
-        s
-    }
-}
-
-impl Script {
-    fn parse(script: &str) -> XResult<Script> {
-        let lines = script.lines().collect::<Vec<_>>();
-        let last_non_empty_line = lines.iter().rev().skip_while(|ln| ln.is_empty()).next();
-        match last_non_empty_line {
-            Some(last_non_empty_line) if last_non_empty_line.starts_with(SIGNATURE_PREFIX) => {
-                let script_signature = ScriptSignature::parse(last_non_empty_line)?;
-                let final_lines = lines
-                    .iter()
-                    .rev()
-                    .skip_while(|ln| ln.is_empty())
-                    .skip(1)
-                    .collect::<Vec<_>>()
-                    .into_iter()
-                    .rev()
-                    .collect::<Vec<_>>();
-                Ok(Script {
-                    content_lines: final_lines.iter().map(ToString::to_string).collect(),
-                    signature: Some(script_signature),
-                })
-            }
-            _ => Ok(Script {
-                content_lines: lines.iter().map(ToString::to_string).collect(),
-                signature: None,
-            }),
-        }
-    }
-
-    fn as_string(&self) -> String {
-        let mut joined_content_liens = self.content_lines.join("\n");
-        match &self.signature {
-            None => joined_content_liens,
-            Some(signature) => {
-                if joined_content_liens.ends_with("\n\n") {
-                    // SKIP add \n
-                } else if joined_content_liens.ends_with("\n") {
-                    joined_content_liens.push('\n');
-                } else {
-                    joined_content_liens.push_str("\n\n");
-                }
-                joined_content_liens.push_str(&signature.as_string());
-                joined_content_liens.push('\n');
-                joined_content_liens
-            }
-        }
-    }
-
-    fn verify(&self, key_map: &KeyMap) -> XResult<bool> {
-        let signature = match &self.signature {
-            None => return simple_error!("Script is not signed."),
-            Some(signature) => signature,
-        };
-        let key = match key_map.find(&signature.key_id) {
-            None => return simple_error!("Sign key id: {} not found", &signature.key_id),
-            Some(key) => key,
-        };
-        let key_bytes = hex::decode(key)?;
-        let digest_sha256 = self.normalize_content_lines_and_sha256(&signature.time);
-        match signature.algorithm {
-            ScriptSignatureAlgorithm::ES256 => {
-                match ecdsaverify(
-                    EcdsaAlgorithm::P256,
-                    &key_bytes,
-                    &digest_sha256,
-                    &signature.signature,
-                ) {
-                    Ok(_) => Ok(true),
-                    Err(e) => {
-                        debugging!("Verify ecdsa signature failed: {}", e);
-                        Ok(false)
-                    }
-                }
-            }
-            _ => simple_error!("Not supported algorithm: {:?}", signature.algorithm),
-        }
-    }
-
-    fn sign(&mut self) -> XResult<()> {
-        let (time, digest_sha256) = self.normalize_content_lines_and_sha256_with_current_time();
-        let digest_sha256_hex = hex::encode(&digest_sha256);
-        let output = util_cmd::run_command_or_exit(
-            "card-cli",
-            &["piv-ecsign", "--json", "-s", "r1", "-x", &digest_sha256_hex],
-        );
-        let ecsign_result: CardEcSignResult = opt_result!(
-            serde_json::from_slice(&output.stdout),
-            "Parse card piv-ecsign failed: {}"
-        );
-        if ecsign_result.algorithm == "ecdsa_p256_with_sha256" {
-            self.signature = Some(ScriptSignature {
-                key_id: "yk-r1".to_string(),
-                algorithm: ScriptSignatureAlgorithm::ES256,
-                time,
-                signature: hex::decode(&ecsign_result.signed_data_hex)?,
-            });
-        } else {
-            return simple_error!("Not supported algorithm: {}", ecsign_result.algorithm);
-        }
-        Ok(())
-    }
-
-    fn normalize_content_lines(&self) -> Vec<String> {
-        let mut normalized_content_lines = Vec::with_capacity(self.content_lines.len());
-        for ln in &self.content_lines {
-            let trimed_ln = ln.trim();
-            if !trimed_ln.is_empty() {
-                normalized_content_lines.push(trimed_ln.to_string());
-            }
-        }
-        normalized_content_lines
-    }
-
-    fn normalize_content_lines_and_sha256_with_current_time(&self) -> (String, Vec<u8>) {
-        let current_time = current_time();
-        (
-            current_time.clone(),
-            self.normalize_content_lines_and_sha256(&current_time),
-        )
-    }
-
-    fn normalize_content_lines_and_sha256(&self, current_time: &str) -> Vec<u8> {
-        let normalized_content_lines = self.normalize_content_lines();
-        let joined_normalized_content_lines = normalized_content_lines.join("\n");
-        let mut hasher = Sha256::new();
-        hasher.update(current_time.as_bytes());
-        hasher.update(joined_normalized_content_lines.as_bytes());
-        hasher.finalize().to_vec()
-    }
-}
-
-fn current_time() -> String {
-    simpledateformat::fmt("yyyyMMdd'T'HHmmssz")
-        .unwrap()
-        .format_local_now()
-}
-
-#[allow(dead_code)]
-#[derive(Copy, Clone)]
-pub enum EcdsaAlgorithm {
-    P256,
-    P384,
-}
-
-macro_rules! ecdsa_verify_signature {
-    ($algo: tt, $pk_point: tt, $prehash: tt, $signature: tt) => {{
-        let verifying_key: VerifyingKey<$algo> = opt_result!(
-            VerifyingKey::<$algo>::from_sec1_bytes($pk_point),
-            "Parse public key failed: {}"
-        );
-        let sign = if let Ok(signature) = Signature::from_der($signature) {
-            signature
-        } else if let Ok(signature) = Signature::from_slice($signature) {
-            signature
-        } else {
-            return simple_error!("Parse signature failed: {}", hex::encode($signature));
-        };
-        opt_result!(
-            verifying_key.verify_prehash($prehash, &sign),
-            "Verify signature failed: {}"
-        );
-    }};
-}
-
-pub fn ecdsaverify(
-    algo: EcdsaAlgorithm,
-    pk_point: &[u8],
-    prehash: &[u8],
-    signature: &[u8],
-) -> XResult<()> {
-    match algo {
-        EcdsaAlgorithm::P256 => {
-            ecdsa_verify_signature!(NistP256, pk_point, prehash, signature)
-        }
-        EcdsaAlgorithm::P384 => {
-            ecdsa_verify_signature!(NistP384, pk_point, prehash, signature)
-        }
-    }
-    Ok(())
-}
-
-#[test]
-fn test_script_signature_parse() {
-    let v1 = "// @SCRIPT-SIGNATURE-V1: key-id.RS256.2025-01-05T20:57:14+08:00.aGVsbG93b3JsZA==";
-    let s = ScriptSignature::parse(v1).unwrap();
-    assert_eq!("key-id", s.key_id);
-    assert_eq!(ScriptSignatureAlgorithm::RS256, s.algorithm);
-    assert_eq!("2025-01-05T20:57:14+08:00", s.time);
-    assert_eq!(b"helloworld".to_vec(), s.signature);
-
-    assert_eq!(v1, s.as_string());
-}
-
-#[test]
-fn test_script_parse_01() {
-    let script = Script::parse("test script").unwrap();
-    assert_eq!(1, script.content_lines.len());
-    assert!(script.signature.is_none());
-}
-
-#[test]
-fn test_script_parse_02() {
-    let script =
-        Script::parse("test script\n\n// @SCRIPT-SIGNATURE-V1: key-id.RS256.2025-01-05T20:57:14+08:00.aGVsbG93b3JsZA==\n")
-            .unwrap();
-    assert_eq!(2, script.content_lines.len());
-    assert_eq!("test script", script.content_lines[0]);
-    assert_eq!("", script.content_lines[1]);
-    let current_time = "2025-01-05T20:57:14+08:00";
-    let digest_sha256 = script.normalize_content_lines_and_sha256(&current_time);
-    assert_eq!(
-        "sybQ8O5TgRlkQ0i8pNIA6huHvAd5XbVZF+U60WMrdco=",
-        standard_base64.encode(&digest_sha256)
-    );
-    assert!(script.signature.is_some());
-    let s = script.signature.unwrap();
-    assert_eq!("key-id", s.key_id);
-    assert_eq!(ScriptSignatureAlgorithm::RS256, s.algorithm);
-    assert_eq!("2025-01-05T20:57:14+08:00", s.time);
-    assert_eq!(b"helloworld".to_vec(), s.signature);
-}