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new file mode 100644
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diff --git a/__crypto/efficient_sm2/Cargo.toml b/__crypto/efficient_sm2/Cargo.toml
new file mode 100644
index 0000000..4bf0327
--- /dev/null
+++ b/__crypto/efficient_sm2/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "efficient_sm2"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rand = "0.8.5"
+efficient-sm2 = "0.1.5"
+
diff --git a/__crypto/efficient_sm2/src/main.rs b/__crypto/efficient_sm2/src/main.rs
new file mode 100644
index 0000000..1d92a31
--- /dev/null
+++ b/__crypto/efficient_sm2/src/main.rs
@@ -0,0 +1,17 @@
+use rand::RngCore;
+
+fn main() {
+    let test_word = b"hello world";
+
+    let mut private_key = [0; 32];
+    rand::thread_rng().fill_bytes(&mut private_key);
+
+    let key_pair = efficient_sm2::KeyPair::new(&private_key).unwrap();
+
+    // signing in sm2
+    let sig = key_pair.sign(test_word).unwrap();
+
+    // verification sm2 signature
+    sig.verify(&key_pair.public_key(), test_word).unwrap();
+}
+