diff --git a/Cargo.toml b/Cargo.toml
index 057ffbb..03e9422 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "card-cli"
-version = "1.4.4"
+version = "1.5.0"
 authors = ["Hatter Jiang <jht5945@gmail.com>"]
 edition = "2018"
 
diff --git a/README.md b/README.md
index 1b56b75..293020f 100644
--- a/README.md
+++ b/README.md
@@ -126,6 +126,19 @@ $ card-cli piv-ecdh --private --slot 82 --epk 04bbb6a458e81d2c646587118abfb029ff
 }
 ```
 
+# piv-ecsign
+
+```shell
+$ card-cli piv-ecsign -s 82 --hash-hex 8f25018489d6fe0dec34a352314c38dc146247b7de65735790f4398a92afa84b --json
+
+{
+  "hash_hex": "8f25018489d6fe0dec34a352314c38dc146247b7de65735790f4398a92afa84b",
+  "signed_data_base64": "MEUCICdes5Y0Id7KBNL23ZsTXXXGAzmsWYyDa6szQwjCxhCJAiEAhJotD2dPK/fWNjNrwkrPd0F20MpGgIY3WiKDR7YgJbk=",
+  "signed_data_hex": "30450220275eb3963421deca04d2f6dd9b135d75c60339ac598c836bab334308c2c61089022100849a2d0f674f2bf7d636336bc24acf774176d0ca468086375a228347b62025b9",
+  "slot": "82"
+}
+```
+
 <br>
 
 TODOs:
diff --git a/src/cmd_pivecsign.rs b/src/cmd_pivecsign.rs
new file mode 100644
index 0000000..9aa672b
--- /dev/null
+++ b/src/cmd_pivecsign.rs
@@ -0,0 +1,65 @@
+use std::collections::BTreeMap;
+use std::str::FromStr;
+
+use clap::{App, Arg, ArgMatches, SubCommand};
+use rust_util::util_clap::{Command, CommandError};
+use rust_util::util_msg;
+use x509_parser::nom::AsBytes;
+use yubikey::YubiKey;
+use yubikey::piv::{AlgorithmId, RetiredSlotId, sign_data, SlotId};
+
+pub struct CommandImpl;
+
+impl Command for CommandImpl {
+    fn name(&self) -> &str { "piv-ecsign" }
+
+    fn subcommand<'a>(&self) -> App<'a, 'a> {
+        SubCommand::with_name(self.name()).about("PIV EC Sign subcommand")
+            .arg(Arg::with_name("pin").short("p").long("pin").takes_value(true).help("PIV card user pin"))
+            .arg(Arg::with_name("slot").short("s").long("slot").takes_value(true).help("PIV slot, e.g. 82, 83 ..."))
+            .arg(Arg::with_name("hash-hex").long("hash-hex").takes_value(true).help("Hash"))
+            .arg(Arg::with_name("json").long("json").help("JSON output"))
+    }
+
+    fn run(&self, _arg_matches: &ArgMatches, sub_arg_matches: &ArgMatches) -> CommandError {
+        let json_output = sub_arg_matches.is_present("json");
+        if json_output { util_msg::set_logger_std_out(false); }
+
+        let mut json = BTreeMap::<&'_ str, String>::new();
+
+        let pin_opt = sub_arg_matches.value_of("pin");
+
+        let slot = opt_value_result!(sub_arg_matches.value_of("slot"), "--slot must assigned, e.g. 82, 83 ...");
+        let hash_hex = opt_value_result!(sub_arg_matches.value_of("hash-hex"), "--hash-hex must assigned");
+
+        let mut yk = opt_result!(YubiKey::open(), "YubiKey not found: {}");
+        let retired_slot_id = opt_result!(RetiredSlotId::from_str(slot), "Slot not found: {}");
+        debugging!("Slot id: {}", retired_slot_id);
+        let slot_id = SlotId::Retired(retired_slot_id);
+
+        if let Some(pin) = pin_opt {
+            opt_result!(yk.verify_pin(pin.as_bytes()), "YubiKey verify pin failed: {}");
+        }
+
+        let hash_bytes = opt_result!(hex::decode(hash_hex), "Parse epk failed: {}");
+
+        let signed_data = opt_result!(sign_data(&mut yk, &hash_bytes, AlgorithmId::EccP256, slot_id), "Sign piv failed: {}");
+
+        if json_output {
+            json.insert("slot", slot.to_string());
+            json.insert("hash_hex", hex::encode(&hash_bytes));
+            json.insert("signed_data_hex", hex::encode(&signed_data.as_bytes()));
+            json.insert("signed_data_base64", base64::encode(&signed_data.as_bytes()));
+        } else {
+            information!("Slot: {}", slot);
+            information!("Hash hex: {}", hex::encode(&hash_bytes));
+            information!("Signed data base64: {}", base64::encode(&signed_data.as_bytes()));
+            information!("Signed data hex: {}", hex::encode(&signed_data.as_bytes()));
+        }
+
+        if json_output {
+            println!("{}", serde_json::to_string_pretty(&json).unwrap());
+        }
+        Ok(None)
+    }
+}
diff --git a/src/main.rs b/src/main.rs
index 9519840..765fe96 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -26,6 +26,7 @@ mod cmd_piv;
 mod cmd_pivmeta;
 mod cmd_pivsign;
 mod cmd_pivecdh;
+mod cmd_pivecsign;
 mod cmd_pivdecrypt;
 mod cmd_pivgenerate;
 mod cmd_chall;
@@ -70,6 +71,7 @@ fn inner_main() -> CommandError {
         Box::new(cmd_pivmeta::CommandImpl),
         Box::new(cmd_pivsign::CommandImpl),
         Box::new(cmd_pivecdh::CommandImpl),
+        Box::new(cmd_pivecsign::CommandImpl),
         Box::new(cmd_pivdecrypt::CommandImpl),
         Box::new(cmd_pivgenerate::CommandImpl),
         Box::new(cmd_u2fregister::CommandImpl),