diff --git a/attestation/rats-tls/0003-Delete-useless-code.patch b/attestation/rats-tls/0003-Delete-useless-code.patch
new file mode 100644
index 0000000000000000000000000000000000000000..e9ffd347e1ffb2fac3cbce633b5c5157352cb7e7
--- /dev/null
+++ b/attestation/rats-tls/0003-Delete-useless-code.patch
@@ -0,0 +1,83 @@
+From cc78c83ca704ad858239a7e77cd69e5a5e889d57 Mon Sep 17 00:00:00 2001
+From: lishengjie <lishengjie12@huawei.com>
+Date: Sat, 29 Jun 2024 13:28:02 +0800
+Subject: [PATCH] Delete useless code
+
+---
+ samples/virtcca-client/inc/token_validate.h | 5 +----
+ samples/virtcca-client/rats-client.c        | 3 +--
+ samples/virtcca-client/token_validate.c     | 3 +--
+ samples/virtcca-server/rats-server.c        | 3 ++-
+ 4 files changed, 5 insertions(+), 9 deletions(-)
+
+diff --git a/samples/virtcca-client/inc/token_validate.h b/samples/virtcca-client/inc/token_validate.h
+index 890618f..6fdbf01 100644
+--- a/samples/virtcca-client/inc/token_validate.h
++++ b/samples/virtcca-client/inc/token_validate.h
+@@ -28,13 +28,10 @@ typedef struct {
+ 
+ bool validate_aik_cert_chain(X509 *x509_aik, X509 *x509_sub, X509 *x509_root);
+ 
+-bool verify_plat_cose_sign(qbuf_t signed_cose, X509 *x509_aik);
+-
+ bool verify_cvm_cose_sign(qbuf_t signed_cose, qbuf_t pub_key);
+ 
+ bool verify_cca_token_signatures(cert_info_t *cert_info,
+                                 qbuf_t cvm_cose,
+-                                qbuf_t cvm_pub_key,
+-                                qbuf_t cvm_pub_key_algo);
++                                qbuf_t cvm_pub_key);
+ 
+ #endif /* TOKEN_VALIDATE_H */
+diff --git a/samples/virtcca-client/rats-client.c b/samples/virtcca-client/rats-client.c
+index ccb8d35..0be6048 100644
+--- a/samples/virtcca-client/rats-client.c
++++ b/samples/virtcca-client/rats-client.c
+@@ -64,8 +64,7 @@ int user_callback(void *args)
+ 
+ 	ret = verify_cca_token_signatures(&cert_info,
+                                 token.cvm_cose,
+-                                token.cvm_token.pub_key,
+-                                token.cvm_token.pub_key_hash_algo_id);
++                                token.cvm_token.pub_key);
+ 	if (!ret) {
+         return false;
+     }
+diff --git a/samples/virtcca-client/token_validate.c b/samples/virtcca-client/token_validate.c
+index 219af82..964ee42 100644
+--- a/samples/virtcca-client/token_validate.c
++++ b/samples/virtcca-client/token_validate.c
+@@ -238,8 +238,7 @@ bool verify_cvm_cose_sign(qbuf_t signed_cose, qbuf_t pub_key)
+ 
+ bool verify_cca_token_signatures(cert_info_t *cert_info,
+                                 qbuf_t cvm_cose,
+-                                qbuf_t cvm_pub_key,
+-                                qbuf_t cvm_pub_key_algo)
++                                qbuf_t cvm_pub_key)
+ {
+     X509 *x509_root = X509_new();
+     X509 *x509_sub = X509_new();
+diff --git a/samples/virtcca-server/rats-server.c b/samples/virtcca-server/rats-server.c
+index e48723c..50fdd00 100644
+--- a/samples/virtcca-server/rats-server.c
++++ b/samples/virtcca-server/rats-server.c
+@@ -76,7 +76,7 @@ int rats_tls_server_startup(rats_tls_log_level_t log_level, char *attester_type,
+ 	conf.flags |= RATS_TLS_CONF_FLAGS_SERVER;
+ 	if (mutual)
+ 		conf.flags |= RATS_TLS_CONF_FLAGS_MUTUAL;
+-	if (ima)
++	if (ima) {
+ 		ret = read_ima_measurements(&ima_meas, &ima_size);
+ 		if (ret == 0 && ima_size != 0) {
+ 			RTLS_INFO("read %zu bytes from binary_runtime_measurements\n", ima_size);
+@@ -89,6 +89,7 @@ int rats_tls_server_startup(rats_tls_log_level_t log_level, char *attester_type,
+ 		} else {
+ 			RTLS_ERR("failed to read binary_runtime_measurements\n");
+ 		}
++	}
+ 	if (provide_endorsements)
+ 		conf.flags |= RATS_TLS_CONF_FLAGS_PROVIDE_ENDORSEMENTS;
+ 
+-- 
+2.38.1.windows.1
+
diff --git a/attestation/samples/include/token_validate.h b/attestation/samples/include/token_validate.h
index 890618f07f7a9bf0d3e1681eea76057f39e0231f..6fdbf01e5b12c4589b04bdd5f5c0b9c5a45925bb 100644
--- a/attestation/samples/include/token_validate.h
+++ b/attestation/samples/include/token_validate.h
@@ -28,13 +28,10 @@ typedef struct {
 
 bool validate_aik_cert_chain(X509 *x509_aik, X509 *x509_sub, X509 *x509_root);
 
-bool verify_plat_cose_sign(qbuf_t signed_cose, X509 *x509_aik);
-
 bool verify_cvm_cose_sign(qbuf_t signed_cose, qbuf_t pub_key);
 
 bool verify_cca_token_signatures(cert_info_t *cert_info,
                                 qbuf_t cvm_cose,
-                                qbuf_t cvm_pub_key,
-                                qbuf_t cvm_pub_key_algo);
+                                qbuf_t cvm_pub_key);
 
 #endif /* TOKEN_VALIDATE_H */
diff --git a/attestation/samples/src/client.c b/attestation/samples/src/client.c
index 47ade5b50b0d16058d7a2c674dfc11096ab33d11..3de48da891a5652460e6a55f2f2f8f216ebf4e37 100644
--- a/attestation/samples/src/client.c
+++ b/attestation/samples/src/client.c
@@ -59,8 +59,7 @@ int verify_token(unsigned char *token, size_t token_len)
 
     ret = verify_cca_token_signatures(&cert_info,
                                 cca_token.cvm_cose,
-                                cca_token.cvm_token.pub_key,
-                                cca_token.cvm_token.pub_key_hash_algo_id);
+                                cca_token.cvm_token.pub_key);
     if (!ret) {
         return VERIFY_FAILED;
     }
diff --git a/attestation/samples/src/token_validate.c b/attestation/samples/src/token_validate.c
index 9aa6a0aec0f5c5ddcdc8fa1c694ed35a1fe0f97d..794fc5210e1f67d4d7598e9b6a73f728f60d1a27 100644
--- a/attestation/samples/src/token_validate.c
+++ b/attestation/samples/src/token_validate.c
@@ -226,8 +226,7 @@ bool verify_cvm_cose_sign(qbuf_t signed_cose, qbuf_t pub_key)
 
 bool verify_cca_token_signatures(cert_info_t *cert_info,
                                 qbuf_t cvm_cose,
-                                qbuf_t cvm_pub_key,
-                                qbuf_t cvm_pub_key_algo)
+                                qbuf_t cvm_pub_key)
 {
     X509 *x509_root = X509_new();
     X509 *x509_sub = X509_new();