diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..b5d37f8
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,33 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install latest nightly
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: nightly
+        override: true
+        components: rustfmt
+    - name: Format code.
+      uses: actions-rs/cargo@v1
+      with:
+        command: fmt
+    - name: Build
+      uses: actions-rs/cargo@v1
+      with:
+        command: build
+    - name: Tests
+      uses: actions-rs/cargo@v1
+      with:
+        command: test
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..2b6292f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+/target
+/test/*
+Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..5ca214a
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,21 @@
+[package]
+name = "libnode"
+version = "0.1.0"
+authors = ["luo4lu <luo4lu@163.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+kv-hal-sled = { git = "https://github.com/Yinet-project/kv-hal-sled" }
+kv-hal = { git = "https://github.com/Yinet-project/kv-hal" }
+rust-crypto = "0.2.36"
+rand = "0.7.3"
+async-trait = "0.1"
+sled = "0.30.3"
+tokio = { version = "0.2", features = ["full"] }
+
+[dev-dependencies.cargo-husky]
+version = "1"
+default-features = false
+features = ["precommit-hook", "run-cargo-fmt", "run-cargo-test", "run-cargo-clippy"]
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..40f23cb
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1 @@
+pub mod node_information;
diff --git a/src/node_information.rs b/src/node_information.rs
new file mode 100644
index 0000000..56c41a0
--- /dev/null
+++ b/src/node_information.rs
@@ -0,0 +1,135 @@
+use crypto::{digest::Digest, ed25519, ripemd160::Ripemd160, sha3::Sha3};
+use kv_hal::kv::Storage;
+use kv_hal_sled::SledStorage;
+use std::convert::TryFrom;
+//use sled;
+
+pub struct NodeInfo {
+    seed: [u8; 32],
+    secret_key: [u8; 64],
+    public_key: [u8; 32],
+    node_id: [u8; 20],
+}
+
+impl NodeInfo {
+    pub async fn new(string: &str, key: &[u8]) -> Self {
+        let seed = NodeInfo::get_value(string, key).await;
+        if let Ok(seed) = seed {
+            if let Some(seed) = seed {
+                NodeInfo::init_node(&seed)
+            } else {
+                NodeInfo::rebuild_key()
+            }
+        } else {
+            NodeInfo::rebuild_key()
+        }
+    }
+
+    //get seed rand sum from kv-hal-sled trait in the get function
+    async fn get_value(string: &str, key: &[u8]) -> Result<Option<Vec<u8>>, sled::Error> {
+        let stor = SledStorage::new(string);
+        stor.get(key).await
+    }
+
+    //如果value存在初始化结构体
+    fn init_node(seed_s: &[u8]) -> Self {
+        //于rebuild_key接口功能类似，不产生随机种子而是根据入参计算秘钥，秘钥-》nodeid
+        let seed: [u8; 32] = TryFrom::try_from(seed_s).unwrap();
+        let (secret_key, public_key) = ed25519::keypair(&seed);
+        //两次hash   let nodeID = ripemd160(sha3(public key));
+        //创建一个SHA3-256的对象
+        let mut hasher = Sha3::sha3_256();
+        //传入公钥
+        hasher.input(&public_key);
+        let mut hex: Vec<u8> = Vec::new();
+        hasher.result(&mut hex);
+
+        let mut ripemd = Ripemd160::new();
+        ripemd.input(&hex);
+        let mut node_id: [u8; 20] = [0; 20];
+        ripemd.result(&mut node_id);
+
+        Self {
+            seed,
+            secret_key,
+            public_key,
+            node_id,
+        }
+    }
+
+    //通过公钥私钥计算出NodeID
+    pub fn get_node(&self) -> [u8; 20] {
+        //获取nodeid,rebuild_key里面的算法获取
+        let mut hasher = Sha3::sha3_256();
+        //传入公钥
+        hasher.input(&self.public_key);
+        let mut hex: Vec<u8> = Vec::new();
+        hasher.result(&mut hex);
+
+        let mut ripemd = Ripemd160::new();
+        ripemd.input(&hex);
+        let mut node_id: [u8; 20] = [0; 20];
+        ripemd.result(&mut node_id);
+        assert_eq!(node_id, self.node_id);
+        node_id
+    }
+
+    //检查是否存在公钥私钥
+    pub fn check_key(&self) -> bool {
+        //由get_value获取的私钥计算出公钥与数据结构中存在的公秘钥比较
+        let (secret_key, public_key) = ed25519::keypair(&self.seed);
+        for (i, _) in secret_key.iter().enumerate() {
+            assert_eq!(secret_key[i], self.secret_key[i]);
+        }
+        assert_eq!(public_key, self.public_key);
+        if self.secret_key.len() != 64 && self.public_key.len() != 32 {
+            return false;
+        }
+        true
+    }
+
+    //如果value不存在生成新的公私钥
+    fn rebuild_key() -> Self {
+        let iter: [u8; 32] = [0; 32];
+        let mut seed: [u8; 32] = [0; 32];
+        for (i, _) in iter.iter().enumerate() {
+            seed[i] = rand::random::<u8>();
+        }
+        let (secret_key, public_key) = ed25519::keypair(&seed);
+        //两次hash   let nodeID = ripemd160(sha3(public key));
+        //创建一个SHA3-256的对象
+        let mut hasher = Sha3::sha3_256();
+        //传入公钥
+        hasher.input(&public_key);
+        let mut hex: Vec<u8> = Vec::new();
+        hasher.result(&mut hex);
+
+        let mut ripemd = Ripemd160::new();
+        ripemd.input(&hex);
+        let mut node_id: [u8; 20] = [0; 20];
+        ripemd.result(&mut node_id);
+
+        Self {
+            seed,
+            secret_key,
+            public_key,
+            node_id,
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[tokio::test]
+    async fn test_node() {
+        let node_inf = NodeInfo::new("test/test.db", b"seed").await;
+
+        let value = node_inf.check_key();
+        assert_eq!(value, false || true);
+
+        let node = node_inf.get_node();
+        assert_eq!(node, node_inf.node_id);
+    }
+}