diff --git a/sm2/src/pke/decrypting.rs b/sm2/src/pke/decrypting.rs
index 82295a37..fec475f2 100644
--- a/sm2/src/pke/decrypting.rs
+++ b/sm2/src/pke/decrypting.rs
@@ -98,7 +98,7 @@ impl DecryptingKey {
     }
 
     /// Decrypts a ciphertext in-place from ASN.1 format using the default digest algorithm (`Sm3`).
-    pub fn decrypt_asna1(&self, ciphertext: &[u8]) -> Result<Vec<u8>> {
+    pub fn decrypt_der(&self, ciphertext: &[u8]) -> Result<Vec<u8>> {
         self.decrypt_asna1_digest::<Sm3>(ciphertext)
     }
 
diff --git a/sm2/src/pke/encrypting.rs b/sm2/src/pke/encrypting.rs
index 82d274e7..a31ca4b7 100644
--- a/sm2/src/pke/encrypting.rs
+++ b/sm2/src/pke/encrypting.rs
@@ -84,8 +84,8 @@ impl EncryptingKey {
     ///
     /// This method calculates the digest using the `Sm3` hash function and performs encryption,
     /// then encodes the result in ASN.1 format.
-    pub fn encrypt_asna1(&self, msg: &[u8]) -> Result<Vec<u8>> {
-        self.encrypt_asna1_digest::<Sm3>(msg)
+    pub fn encrypt_der(&self, msg: &[u8]) -> Result<Vec<u8>> {
+        self.encrypt_der_digest::<Sm3>(msg)
     }
 
     /// Encrypts a message using a specified digest algorithm.
@@ -98,7 +98,7 @@ impl EncryptingKey {
     }
 
     /// Encrypts a message using a specified digest algorithm and returns the result in ASN.1 format.
-    pub fn encrypt_asna1_digest<D>(&self, msg: &[u8]) -> Result<Vec<u8>>
+    pub fn encrypt_der_digest<D>(&self, msg: &[u8]) -> Result<Vec<u8>>
     where
         D: 'static + Digest + DynDigest + Send + Sync,
     {
diff --git a/sm2/tests/sm2pke.rs b/sm2/tests/sm2pke.rs
index fd65afe6..1ce84b9d 100644
--- a/sm2/tests/sm2pke.rs
+++ b/sm2/tests/sm2pke.rs
@@ -36,7 +36,7 @@ fn decrypt_asna1_verify() {
         NonZeroScalar::<Sm2>::try_from(PRIVATE_KEY.as_ref() as &[u8]).unwrap(),
         sm2::pke::Mode::C1C2C3,
     );
-    assert_eq!(dk.decrypt_asna1(&ASN1_CIPHER).unwrap(), MSG);
+    assert_eq!(dk.decrypt_der(&ASN1_CIPHER).unwrap(), MSG);
 }
 
 prop_compose! {
@@ -65,8 +65,8 @@ proptest! {
     #[test]
     fn encrypt_and_decrpyt_asna1(dk in decrypting_key()) {
         let ek = dk.encrypting_key();
-        let cipher_bytes = ek.encrypt_asna1(MSG).unwrap();
-        prop_assert!(dk.decrypt_asna1(&cipher_bytes).is_ok());
+        let cipher_bytes = ek.encrypt_der(MSG).unwrap();
+        prop_assert!(dk.decrypt_der(&cipher_bytes).is_ok());
     }
 
     #[test]