diff --git a/attestation-agent/deps/crypto/src/lib.rs b/attestation-agent/deps/crypto/src/lib.rs
index ba677dcdd..d37d7c1b1 100644
--- a/attestation-agent/deps/crypto/src/lib.rs
+++ b/attestation-agent/deps/crypto/src/lib.rs
@@ -29,8 +29,5 @@ mod rust;
 mod symmetric;
 pub use symmetric::*;
 
-mod teekey;
-pub use teekey::*;
-
 mod asymmetric;
 pub use asymmetric::*;
diff --git a/attestation-agent/deps/crypto/src/teekey.rs b/attestation-agent/deps/crypto/src/teekey.rs
deleted file mode 100644
index c9bf2c170..000000000
--- a/attestation-agent/deps/crypto/src/teekey.rs
+++ /dev/null
@@ -1,87 +0,0 @@
-// Copyright (c) 2023 Alibaba Cloud
-//
-// SPDX-License-Identifier: Apache-2.0
-//
-
-//! Implementations of the TeeKey
-
-use anyhow::*;
-use base64::engine::general_purpose::STANDARD;
-use base64::Engine;
-use kbs_types::TeePubKey;
-use rsa::pkcs1::DecodeRsaPublicKey;
-use rsa::{traits::PublicKeyParts, Pkcs1v15Encrypt, RsaPrivateKey, RsaPublicKey};
-use sha2::{Digest, Sha384};
-
-const RSA_PUBKEY_LENGTH: usize = 2048;
-
-pub const RSA_KEY_TYPE: &str = "RSA";
-pub const RSA_ALGORITHM: &str = "RSA1_5";
-pub const AES_256_GCM_ALGORITHM: &str = "A256GCM";
-
-/// The key inside TEE to decrypt confidential data.
-#[derive(Debug, Clone)]
-pub struct TeeKey {
-    private_key: RsaPrivateKey,
-    public_key: RsaPublicKey,
-}
-
-impl TeeKey {
-    pub fn new() -> Result<TeeKey> {
-        let mut rng = rand::thread_rng();
-
-        let private_key = RsaPrivateKey::new(&mut rng, RSA_PUBKEY_LENGTH)?;
-        let public_key = RsaPublicKey::from(&private_key);
-
-        Ok(TeeKey {
-            private_key,
-            public_key,
-        })
-    }
-
-    // Export TEE public key as JWK, as defined in RFC 7517.
-    pub fn export_pubkey(&self) -> Result<TeePubKey> {
-        let engine = base64::engine::general_purpose::URL_SAFE_NO_PAD;
-        let k_mod = engine.encode(self.public_key.n().to_bytes_be());
-        let k_exp = engine.encode(self.public_key.e().to_bytes_be());
-
-        Ok(TeePubKey {
-            kty: RSA_KEY_TYPE.to_string(),
-            alg: RSA_ALGORITHM.to_string(),
-            k_mod,
-            k_exp,
-        })
-    }
-
-    // Use TEE private key to decrypt cipher text.
-    pub fn decrypt(&self, cipher_text: Vec<u8>) -> Result<Vec<u8>> {
-        self.private_key
-            .decrypt(Pkcs1v15Encrypt, &cipher_text)
-            .map_err(|e| anyhow!("TEE RSA key decrypt failed: {:?}", e))
-    }
-}
-
-// Returns a sha384 of all chunks.
-pub fn hash_chunks(chunks: Vec<Vec<u8>>) -> Vec<u8> {
-    let mut hasher = Sha384::new();
-
-    for chunk in chunks.iter() {
-        hasher.update(chunk);
-    }
-
-    hasher.finalize().to_vec()
-}
-
-// Convert PKCS#1 PEM public key to TeePubKey
-pub fn pkcs1_pem_to_teepubkey(pem: String) -> Result<TeePubKey> {
-    let public_key = RsaPublicKey::from_pkcs1_pem(&pem)?;
-    let k_mod = STANDARD.encode(public_key.n().to_bytes_be());
-    let k_exp = STANDARD.encode(public_key.e().to_bytes_be());
-    let tee_pubkey = TeePubKey {
-        kty: RSA_KEY_TYPE.to_string(),
-        alg: RSA_ALGORITHM.to_string(),
-        k_mod,
-        k_exp,
-    };
-    Ok(tee_pubkey)
-}