diff --git a/include/gmssl/tls.h b/include/gmssl/tls.h
index b6ff82d4..82ec2426 100644
--- a/include/gmssl/tls.h
+++ b/include/gmssl/tls.h
@@ -411,13 +411,10 @@ int tls_cbc_encrypt(const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *enc_key,
 int tls_cbc_decrypt(const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *dec_key,
 	const uint8_t seq_num[8], const uint8_t header[5],
 	const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen);
-int tls_record_encrypt(const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *cbc_key,
+int tls_record_cbc_encrypt(const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *cbc_key,
 	const uint8_t seq_num[8], const uint8_t *in, size_t inlen,
 	uint8_t *out, size_t *outlen);
-int tls_record_decrypt(const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *cbc_key,
-	const uint8_t seq_num[8], const uint8_t *in, size_t inlen,
-	uint8_t *out, size_t *outlen);
-int tls12_record_cbc_encrypt(const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *cbc_key,
+int tls_record_cbc_decrypt(const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *cbc_key,
 	const uint8_t seq_num[8], const uint8_t *in, size_t inlen,
 	uint8_t *out, size_t *outlen);
 int tls12_gcm_encrypt(const BLOCK_CIPHER_KEY *key, const uint8_t fixed_iv[4],
@@ -426,10 +423,21 @@ int tls12_gcm_encrypt(const BLOCK_CIPHER_KEY *key, const uint8_t fixed_iv[4],
 int tls12_record_gcm_encrypt(const BLOCK_CIPHER_KEY *key, const uint8_t fixed_iv[4],
 	const uint8_t seq_num[8], const uint8_t *in, size_t inlen,
 	uint8_t *out, size_t *outlen);
+int tls12_record_gcm_decrypt(const BLOCK_CIPHER_KEY *key, const uint8_t fixed_iv[4],
+	const uint8_t seq_num[8], const uint8_t *in, size_t inlen,
+	uint8_t *out, size_t *outlen);
 int tls12_record_decrypt(int cipher_suite, const HMAC_CTX *hmac_ctx,
 	const BLOCK_CIPHER_KEY *key, const uint8_t fixed_iv[4],
 	const uint8_t seq_num[8], const uint8_t *in, size_t inlen,
 	uint8_t *out, size_t *outlen);
+int tlcp_record_encrypt(int cipher_suite,
+	const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *key, const uint8_t fixed_iv[4],
+	const uint8_t seq_num[8], const uint8_t *in, size_t inlen,
+	uint8_t *out, size_t *outlen);
+int tlcp_record_decrypt(int cipher_suite,
+	const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *key, const uint8_t fixed_iv[4],
+	const uint8_t seq_num[8], const uint8_t *in, size_t inlen,
+	uint8_t *out, size_t *outlen);
 
 int tls_seq_num_incr(uint8_t seq_num[8]);
 void tls_seq_num_reset(uint8_t seq_num[8]);
diff --git a/src/tlcp.c b/src/tlcp.c
index 7b1495bf..a574c188 100644
--- a/src/tlcp.c
+++ b/src/tlcp.c
@@ -25,18 +25,86 @@
 
 
 
-static const int tlcp_ciphers[] = { TLS_cipher_ecc_sm4_cbc_sm3 };
+static const int tlcp_ciphers[] = {
+	TLS_cipher_ecc_sm4_cbc_sm3,
+	TLS_cipher_ecc_sm4_gcm_sm3,
+};
 static const size_t tlcp_ciphers_count = sizeof(tlcp_ciphers)/sizeof(tlcp_ciphers[0]);
 
 
 int tlcp_record_print(FILE *fp, int format, int indent, const uint8_t *record, size_t recordlen)
 {
-	// 目前只支持TLCP的ECC公钥加密套件，因此不论用哪个套件解析都是一样的
+	// 目前只支持TLCP的ECC公钥加密套件，因此不论用CBC/GCM哪个套件解析都是一样的
 	// 如果未来支持ECDHE套件，可以将函数改为宏，直接传入 (conn->cipher_suite << 8)
 	format |= tlcp_ciphers[0] << 8;
 	return tls_record_print(fp, record, recordlen, format, indent);
 }
 
+static int tlcp_cipher_suite_get(int cipher_suite, const BLOCK_CIPHER **cipher, const DIGEST **digest)
+{
+	switch (cipher_suite) {
+	case TLS_cipher_ecc_sm4_cbc_sm3:
+	case TLS_cipher_ecc_sm4_gcm_sm3:
+		*cipher = BLOCK_CIPHER_sm4();
+		*digest = DIGEST_sm3();
+		break;
+	default:
+		error_print();
+		return -1;
+	}
+	return 1;
+}
+
+int tlcp_record_encrypt(int cipher_suite,
+	const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *key, const uint8_t fixed_iv[4],
+	const uint8_t seq_num[8], const uint8_t *in, size_t inlen,
+	uint8_t *out, size_t *outlen)
+{
+	switch (cipher_suite) {
+	case TLS_cipher_ecc_sm4_cbc_sm3:
+		if (tls_record_cbc_encrypt(hmac_ctx, key, seq_num, in, inlen, out, outlen) != 1) {
+			error_print();
+			return -1;
+		}
+		break;
+	case TLS_cipher_ecc_sm4_gcm_sm3:
+		if (tls12_record_gcm_encrypt(key, fixed_iv, seq_num, in, inlen, out, outlen) != 1) {
+			error_print();
+			return -1;
+		}
+		break;
+	default:
+		error_print();
+		return -1;
+	}
+	return 1;
+}
+
+int tlcp_record_decrypt(int cipher_suite,
+	const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *key, const uint8_t fixed_iv[4],
+	const uint8_t seq_num[8], const uint8_t *in, size_t inlen,
+	uint8_t *out, size_t *outlen)
+{
+	switch (cipher_suite) {
+	case TLS_cipher_ecc_sm4_cbc_sm3:
+		if (tls_record_cbc_decrypt(hmac_ctx, key, seq_num, in, inlen, out, outlen) != 1) {
+			error_print();
+			return -1;
+		}
+		break;
+	case TLS_cipher_ecc_sm4_gcm_sm3:
+		if (tls12_record_gcm_decrypt(key, fixed_iv, seq_num, in, inlen, out, outlen) != 1) {
+			error_print();
+			return -1;
+		}
+		break;
+	default:
+		error_print();
+		return -1;
+	}
+	return 1;
+}
+
 
 /*
 ServerKeyExchange
@@ -194,7 +262,12 @@ int tlcp_send_client_hello(TLS_CONNECT *conn)
 		uint8_t *pexts = exts;
 		size_t extslen = 0;
 
-		if (digest_init(&conn->dgst_ctx, DIGEST_sm3()) != 1) {
+		if (!conn->ctx->cipher_suites_cnt) {
+			error_print();
+			return -1;
+		}
+		if (tlcp_cipher_suite_get(conn->ctx->cipher_suites[0], &conn->cipher, &conn->digest) != 1
+			|| digest_init(&conn->dgst_ctx, conn->digest) != 1) {
 			error_print();
 			return -1;
 		}
@@ -364,6 +437,11 @@ int tlcp_recv_server_hello(TLS_CONNECT *conn)
 		return -1;
 	}
 	conn->cipher_suite = cipher_suite;
+	if (tlcp_cipher_suite_get(conn->cipher_suite, &conn->cipher, &conn->digest) != 1) {
+		error_print();
+		tls_send_alert(conn, TLS_alert_internal_error);
+		return -1;
+	}
 
 	while (extslen) {
 		int ext_type;
@@ -963,7 +1041,8 @@ int tlcp_send_client_finished(TLS_CONNECT *conn)
 		tls_handshake_digest_print(stderr, 0, 0, "client Finished", &conn->dgst_ctx);
 
 
-		if (tls_record_encrypt(&conn->client_write_mac_ctx, &conn->client_write_key,
+		if (tlcp_record_encrypt(conn->cipher_suite,
+			&conn->client_write_mac_ctx, &conn->client_write_key, conn->client_write_iv,
 			conn->client_seq_num, conn->plain_record, conn->plain_recordlen,
 			conn->record, &conn->recordlen) != 1) {
 
@@ -1014,7 +1093,8 @@ int tlcp_recv_server_finished(TLS_CONNECT *conn)
 		return -1;
 	}
 
-	if (tls_record_decrypt(&conn->server_write_mac_ctx, &conn->server_write_key,
+	if (tlcp_record_decrypt(conn->cipher_suite,
+		&conn->server_write_mac_ctx, &conn->server_write_key, conn->server_write_iv,
 		conn->server_seq_num, conn->record, conn->recordlen,
 		conn->plain_record, &conn->plain_recordlen) != 1) {
 		error_print();
@@ -1241,6 +1321,7 @@ int tlcp_recv_client_hello(TLS_CONNECT *conn)
 
 	switch (conn->cipher_suite) {
 	case TLS_cipher_ecc_sm4_cbc_sm3:
+	case TLS_cipher_ecc_sm4_gcm_sm3:
 		conn->signature_algorithms[0] = TLS_sig_sm2sig_sm3;
 		conn->ecdh_named_curve = 0;
 		break;
@@ -1348,6 +1429,12 @@ int tlcp_recv_client_hello(TLS_CONNECT *conn)
 		}
 	}
 
+	if (tlcp_cipher_suite_get(conn->cipher_suite, &conn->cipher, &conn->digest) != 1) {
+		error_print();
+		tls_send_alert(conn, TLS_alert_internal_error);
+		return -1;
+	}
+
 	if (server_name) {
 		if (tls_server_name_from_bytes(&host_name, &host_name_len, server_name, server_name_len) != 1) {
 			error_print();
@@ -1374,7 +1461,7 @@ int tlcp_recv_client_hello(TLS_CONNECT *conn)
 		return -1;
 	}
 
-	if (digest_init(&conn->dgst_ctx, DIGEST_sm3()) != 1
+	if (digest_init(&conn->dgst_ctx, conn->digest) != 1
 		|| digest_update(&conn->dgst_ctx, conn->record + 5, conn->recordlen - 5) != 1) {
 		error_print();
 		return -1;
@@ -1650,14 +1737,31 @@ static int tlcp_generate_master_secret(TLS_CONNECT *conn)
 
 static int tlcp_generate_key_block(TLS_CONNECT *conn)
 {
+	size_t key_block_len;
+
 	if (!conn) {
 		error_print();
 		return -1;
 	}
+	switch (conn->cipher_suite) {
+	case TLS_cipher_ecc_sm4_gcm_sm3:
+		if (!conn->cipher) {
+			error_print();
+			return -1;
+		}
+		key_block_len = conn->cipher->key_size * 2 + 8;
+		break;
+	case TLS_cipher_ecc_sm4_cbc_sm3:
+		key_block_len = 96;
+		break;
+	default:
+		error_print();
+		return -1;
+	}
 	if (tls_prf(conn->master_secret, 48, "key expansion",
 			conn->server_random, 32,
 			conn->client_random, 32,
-			96, conn->key_block) != 1) {
+			key_block_len, conn->key_block) != 1) {
 		error_print();
 		tls_send_alert(conn, TLS_alert_internal_error);
 		return -1;
@@ -1671,31 +1775,84 @@ static int tlcp_generate_record_keys(TLS_CONNECT *conn)
 		error_print();
 		return -1;
 	}
-	if (hmac_init(&conn->client_write_mac_ctx, DIGEST_sm3(), conn->key_block, 32) != 1
-		|| hmac_init(&conn->server_write_mac_ctx, DIGEST_sm3(), conn->key_block + 32, 32) != 1) {
+	switch (conn->cipher_suite) {
+	case TLS_cipher_ecc_sm4_gcm_sm3:
+	{
+		size_t keylen;
+
+		if (!conn->cipher) {
+			error_print();
+			return -1;
+		}
+		keylen = conn->cipher->key_size;
+
+		memset(conn->client_write_iv, 0, sizeof(conn->client_write_iv));
+		memset(conn->server_write_iv, 0, sizeof(conn->server_write_iv));
+		memcpy(conn->client_write_iv, conn->key_block + keylen * 2, 4);
+		memcpy(conn->server_write_iv, conn->key_block + keylen * 2 + 4, 4);
+
+		if (block_cipher_set_encrypt_key(&conn->client_write_key, conn->cipher, conn->key_block) != 1
+			|| block_cipher_set_encrypt_key(&conn->server_write_key, conn->cipher, conn->key_block + keylen) != 1) {
+			error_print();
+			tls_send_alert(conn, TLS_alert_internal_error);
+			return -1;
+		}
+		break;
+	}
+	case TLS_cipher_ecc_sm4_cbc_sm3:
+		if (hmac_init(&conn->client_write_mac_ctx, conn->digest, conn->key_block, 32) != 1
+			|| hmac_init(&conn->server_write_mac_ctx, conn->digest, conn->key_block + 32, 32) != 1) {
+			error_print();
+			tls_send_alert(conn, TLS_alert_internal_error);
+			return -1;
+		}
+
+		if (conn->is_client) {
+			if (block_cipher_set_encrypt_key(&conn->client_write_key, conn->cipher, conn->key_block + 64) != 1
+				|| block_cipher_set_decrypt_key(&conn->server_write_key, conn->cipher, conn->key_block + 80) != 1) {
+				error_print();
+				tls_send_alert(conn, TLS_alert_internal_error);
+				return -1;
+			}
+		} else {
+			if (block_cipher_set_decrypt_key(&conn->client_write_key, conn->cipher, conn->key_block + 64) != 1
+				|| block_cipher_set_encrypt_key(&conn->server_write_key, conn->cipher, conn->key_block + 80) != 1) {
+				error_print();
+				tls_send_alert(conn, TLS_alert_internal_error);
+				return -1;
+			}
+		}
+		break;
+	default:
 		error_print();
-		tls_send_alert(conn, TLS_alert_internal_error);
 		return -1;
 	}
-
-	if (conn->is_client) {
-		if (block_cipher_set_encrypt_key(&conn->client_write_key, BLOCK_CIPHER_sm4(), conn->key_block + 64) != 1
-			|| block_cipher_set_decrypt_key(&conn->server_write_key, BLOCK_CIPHER_sm4(), conn->key_block + 80) != 1) {
-			error_print();
-			tls_send_alert(conn, TLS_alert_internal_error);
-			return -1;
-		}
-	} else {
-		if (block_cipher_set_decrypt_key(&conn->client_write_key, BLOCK_CIPHER_sm4(), conn->key_block + 64) != 1
-			|| block_cipher_set_encrypt_key(&conn->server_write_key, BLOCK_CIPHER_sm4(), conn->key_block + 80) != 1) {
-			error_print();
-			tls_send_alert(conn, TLS_alert_internal_error);
-			return -1;
-		}
-	}
 	return 1;
 }
 
+static void tlcp_secrets_print(TLS_CONNECT *conn)
+{
+	if (conn->cipher_suite == TLS_cipher_ecc_sm4_gcm_sm3) {
+		size_t keylen = conn->cipher->key_size;
+
+		format_bytes(stderr, 0, 4, "pre_master_secret", conn->pre_master_secret, 48);
+		format_bytes(stderr, 0, 4, "client_random", conn->client_random, 32);
+		format_bytes(stderr, 0, 4, "server_random", conn->server_random, 32);
+		format_bytes(stderr, 0, 4, "master_secret", conn->master_secret, 48);
+		format_bytes(stderr, 0, 4, "client_write_key", conn->key_block, keylen);
+		format_bytes(stderr, 0, 4, "server_write_key", conn->key_block + keylen, keylen);
+		format_bytes(stderr, 0, 4, "client_write_iv", conn->client_write_iv, 4);
+		format_bytes(stderr, 0, 4, "server_write_iv", conn->server_write_iv, 4);
+	} else {
+		tls_secrets_print(stderr,
+			conn->pre_master_secret, 48,
+			conn->client_random, conn->server_random,
+			conn->master_secret,
+			conn->key_block, 96,
+			0, 4);
+	}
+}
+
 int tlcp_generate_keys(TLS_CONNECT *conn)
 {
 	tls_trace("generate secrets\n");
@@ -1709,12 +1866,7 @@ int tlcp_generate_keys(TLS_CONNECT *conn)
 	tls_seq_num_reset(conn->client_seq_num);
 	tls_seq_num_reset(conn->server_seq_num);
 
-	tls_secrets_print(stderr,
-		conn->pre_master_secret, 48,
-		conn->client_random, conn->server_random,
-		conn->master_secret,
-		conn->key_block, 96,
-		0, 4);
+	tlcp_secrets_print(conn);
 
 	return 1;
 }
@@ -1874,7 +2026,8 @@ int tlcp_recv_client_finished(TLS_CONNECT *conn)
 		tls_send_alert(conn, TLS_alert_unexpected_message);
 		return -1;
 	}
-	if (tls_record_decrypt(&conn->client_write_mac_ctx, &conn->client_write_key,
+	if (tlcp_record_decrypt(conn->cipher_suite,
+		&conn->client_write_mac_ctx, &conn->client_write_key, conn->client_write_iv,
 		conn->client_seq_num, conn->record, conn->recordlen,
 		conn->plain_record, &conn->plain_recordlen) != 1) {
 		error_print();
@@ -1931,7 +2084,8 @@ int tlcp_send_server_finished(TLS_CONNECT *conn)
 		}
 		tlcp_record_print(stderr, 0, 0, conn->plain_record, conn->plain_recordlen);
 
-		if (tls_record_encrypt(&conn->server_write_mac_ctx, &conn->server_write_key,
+		if (tlcp_record_encrypt(conn->cipher_suite,
+			&conn->server_write_mac_ctx, &conn->server_write_key, conn->server_write_iv,
 			conn->server_seq_num, conn->plain_record, conn->plain_recordlen,
 			conn->record, &conn->recordlen) != 1) {
 			error_print();
diff --git a/src/tls.c b/src/tls.c
index b249f8eb..162096dd 100644
--- a/src/tls.c
+++ b/src/tls.c
@@ -439,7 +439,7 @@ int tls_cbc_decrypt(const HMAC_CTX *inited_hmac_ctx, const BLOCK_CIPHER_KEY *dec
 	return 1;
 }
 
-int tls_record_encrypt(const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *cbc_key,
+int tls_record_cbc_encrypt(const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *cbc_key,
 	const uint8_t seq_num[8], const uint8_t *in, size_t inlen,
 	uint8_t *out, size_t *outlen)
 {
@@ -459,7 +459,7 @@ int tls_record_encrypt(const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *cbc_key
 	return 1;
 }
 
-int tls_record_decrypt(const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *cbc_key,
+int tls_record_cbc_decrypt(const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *cbc_key,
 	const uint8_t seq_num[8], const uint8_t *in, size_t inlen,
 	uint8_t *out, size_t *outlen)
 {
@@ -1849,7 +1849,7 @@ static int tls_encrypt_send(TLS_CONNECT *conn, int record_type, const uint8_t *i
 			break;
 		case TLS_cipher_ecdhe_sm4_cbc_sm3:
 		case TLS_cipher_ecdhe_ecdsa_with_aes_128_cbc_sha256:
-			if (tls12_record_cbc_encrypt(hmac_ctx, enc_key, seq_num,
+			if (tls_record_cbc_encrypt(hmac_ctx, enc_key, seq_num,
 				conn->databuf, tls_record_length(conn->databuf),
 				conn->record, &recordlen) != 1) {
 				error_print();
@@ -1860,8 +1860,15 @@ static int tls_encrypt_send(TLS_CONNECT *conn, int record_type, const uint8_t *i
 			error_print();
 			return -1;
 		}
+	} else if (conn->protocol == TLS_protocol_tlcp) {
+		if (tlcp_record_encrypt(conn->cipher_suite, hmac_ctx, enc_key, fixed_iv, seq_num,
+			conn->databuf, tls_record_length(conn->databuf),
+			conn->record, &recordlen) != 1) {
+			error_print();
+			return -1;
+		}
 	} else {
-		if (tls_record_encrypt(hmac_ctx, enc_key, seq_num,
+		if (tls_record_cbc_encrypt(hmac_ctx, enc_key, seq_num,
 			conn->databuf, tls_record_length(conn->databuf),
 			conn->record, &recordlen) != 1) {
 			error_print();
@@ -1916,8 +1923,14 @@ int tls_decrypt_recv(TLS_CONNECT *conn)
 			error_print();
 			return -1;
 		}
+	} else if (conn->protocol == TLS_protocol_tlcp) {
+		if (tlcp_record_decrypt(conn->cipher_suite, hmac_ctx, dec_key, fixed_iv, seq_num,
+			record, recordlen, conn->databuf, &conn->datalen) != 1) {
+			error_print();
+			return -1;
+		}
 	} else {
-		if (tls_record_decrypt(hmac_ctx, dec_key, seq_num,
+		if (tls_record_cbc_decrypt(hmac_ctx, dec_key, seq_num,
 			record, recordlen,
 			conn->databuf, &conn->datalen) != 1) {
 			error_print();
diff --git a/src/tls12.c b/src/tls12.c
index b6ac6ebb..ba56f99c 100644
--- a/src/tls12.c
+++ b/src/tls12.c
@@ -14,7 +14,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>
-#include <gmssl/rand.h>
 #include <gmssl/x509.h>
 #include <gmssl/error.h>
 #include <gmssl/sm2.h>
@@ -43,180 +42,6 @@ int tls12_record_print(FILE *fp, const uint8_t *record,  size_t recordlen, int f
 	return tls_record_print(fp, record, recordlen, format, indent);
 }
 
-// 这里主要的问题是我们没有 cbc_encrypt_blocks 这个函数啊
-
-
-void cbc_encrypt_blocks(const BLOCK_CIPHER_KEY *key, uint8_t iv[16],
-	const uint8_t *in, size_t nblocks, uint8_t *out)
-{
-	const uint8_t *piv = iv;
-
-	while (nblocks--) {
-		size_t i;
-		for (i = 0; i < 16; i++) {
-			out[i] = in[i] ^ piv[i];
-		}
-		block_cipher_encrypt(key, out, out);
-		piv = out;
-		in += 16;
-		out += 16;
-	}
-
-	memcpy(iv, piv, 16);
-}
-
-void cbc_decrypt_blocks(const BLOCK_CIPHER_KEY *key, uint8_t iv[16],
-	const uint8_t *in, size_t nblocks, uint8_t *out)
-{
-	const uint8_t *piv = iv;
-
-	while (nblocks--) {
-		size_t i;
-		block_cipher_decrypt(key, in, out);
-		for (i = 0; i < 16; i++) {
-			out[i] ^= piv[i];
-		}
-		piv = in;
-		in += 16;
-		out += 16;
-	}
-
-	memcpy(iv, piv, 16);
-}
-
-
-// 这个函数只有在哈希函数为HASH256时才是正确的
-int tls12_cbc_encrypt(const HMAC_CTX *inited_hmac_ctx, const BLOCK_CIPHER_KEY *enc_key,
-	const uint8_t seq_num[8], const uint8_t header[5],
-	const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen)
-{
-	HMAC_CTX hmac_ctx;
-	uint8_t last_blocks[32 + 16] = {0};
-	uint8_t iv[16];
-	uint8_t *mac, *padding;
-	size_t maclen;
-	int rem, padding_len;
-	int i;
-
-	if (!inited_hmac_ctx || !enc_key || !seq_num || !header || (!in && inlen) || !out || !outlen) {
-		error_print();
-		return -1;
-	}
-	if (inlen > (1 << 14)) {
-		error_print();
-		return -1;
-	}
-	if ((((size_t)header[3]) << 8) + header[4] != inlen) {
-		error_print();
-		return -1;
-	}
-
-	rem = (inlen + 32) % 16;
-	memcpy(last_blocks, in + inlen - rem, rem);
-	mac = last_blocks + rem;
-
-	memcpy(&hmac_ctx, inited_hmac_ctx, sizeof(HMAC_CTX));
-	hmac_update(&hmac_ctx, seq_num, 8);
-	hmac_update(&hmac_ctx, header, 5);
-	hmac_update(&hmac_ctx, in, inlen);
-	hmac_finish(&hmac_ctx, mac, &maclen);
-
-	padding = mac + 32;
-	padding_len = 16 - rem - 1;
-	for (i = 0; i <= padding_len; i++) {
-		padding[i] = (uint8_t)padding_len;
-	}
-
-	if (rand_bytes(iv, 16) != 1) {
-		error_print();
-		return -1;
-	}
-	memcpy(out, iv, 16);
-	out += 16;
-
-	if (inlen >= 16) {
-		cbc_encrypt_blocks(enc_key, iv, in, inlen/16, out);
-		out += inlen - rem;
-	}
-	cbc_encrypt_blocks(enc_key, iv, last_blocks, sizeof(last_blocks)/16, out);
-
-	*outlen = 16 + inlen - rem + sizeof(last_blocks);
-	return 1;
-}
-
-int tls12_cbc_decrypt(const HMAC_CTX *inited_hmac_ctx, const BLOCK_CIPHER_KEY *dec_key,
-	const uint8_t seq_num[8], const uint8_t enced_header[5],
-	const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen)
-{
-	HMAC_CTX hmac_ctx;
-	uint8_t iv[16];
-	const uint8_t *padding;
-	const uint8_t *mac;
-	uint8_t header[5];
-	int padding_len;
-	uint8_t hmac[32];
-	size_t hmaclen;
-	int i;
-
-	if (!inited_hmac_ctx || !dec_key || !seq_num || !enced_header || !in || !inlen || !out || !outlen) {
-		error_print();
-		return -1;
-	}
-	if (inlen % 16
-		|| inlen < (16 + 0 + 32 + 16) // iv + data +  mac + padding
-		|| inlen > (16 + (1<<14) + 32 + 256)) {
-		error_print_msg("invalid tls cbc ciphertext length %zu\n", inlen);
-		return -1;
-	}
-
-	memcpy(iv, in, 16);
-
-	format_bytes(stderr, 0, 0, "itls12_cbc_decrypt: iv", iv, 16);
-
-
-	in += 16;
-	inlen -= 16;
-
-	cbc_decrypt_blocks(dec_key, iv, in, inlen/16, out);
-
-	format_bytes(stderr, 0, 0, "cbc_decrypt out", out, inlen);
-
-
-	padding_len = out[inlen - 1];
-	padding = out + inlen - padding_len - 1;
-	if (padding < out + 32) {
-		error_print();
-		return -1;
-	}
-	for (i = 0; i < padding_len; i++) {
-		if (padding[i] != padding_len) {
-			error_puts("tls ciphertext cbc-padding check failure");
-			return -1;
-		}
-	}
-
-	*outlen = inlen - 32 - padding_len - 1;
-
-	header[0] = enced_header[0];
-	header[1] = enced_header[1];
-	header[2] = enced_header[2];
-	header[3] = (uint8_t)((*outlen) >> 8);
-	header[4] = (uint8_t)(*outlen);
-	mac = padding - 32;
-
-	memcpy(&hmac_ctx, inited_hmac_ctx, sizeof(HMAC_CTX));
-	hmac_update(&hmac_ctx, seq_num, 8);
-	hmac_update(&hmac_ctx, header, 5);
-	hmac_update(&hmac_ctx, out, *outlen);
-	hmac_finish(&hmac_ctx, hmac, &hmaclen);
-
-	if (gmssl_secure_memcmp(mac, hmac, sizeof(hmac)) != 0) {
-		error_puts("tls ciphertext mac check failure\n");
-		return -1;
-	}
-	return 1;
-}
-
 int tls12_gcm_encrypt(const BLOCK_CIPHER_KEY *key, const uint8_t fixed_iv[4],
 	const uint8_t seq_num[8], const uint8_t header[5],
 	const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen)
@@ -259,26 +84,6 @@ int tls12_gcm_encrypt(const BLOCK_CIPHER_KEY *key, const uint8_t fixed_iv[4],
 	return 1;
 }
 
-int tls12_record_cbc_encrypt(const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *cbc_key,
-	const uint8_t seq_num[8], const uint8_t *in, size_t inlen,
-	uint8_t *out, size_t *outlen)
-{
-	if (tls12_cbc_encrypt(hmac_ctx, cbc_key, seq_num, in,
-		in + 5, inlen - 5,
-		out + 5, outlen) != 1) {
-		error_print();
-		return -1;
-	}
-
-	out[0] = in[0];
-	out[1] = in[1];
-	out[2] = in[2];
-	out[3] = (uint8_t)((*outlen) >> 8);
-	out[4] = (uint8_t)(*outlen);
-	(*outlen) += 5;
-	return 1;
-}
-
 int tls12_record_gcm_encrypt(const BLOCK_CIPHER_KEY *key, const uint8_t fixed_iv[4],
 	const uint8_t seq_num[8], const uint8_t *in, size_t inlen,
 	uint8_t *out, size_t *outlen)
@@ -343,28 +148,7 @@ static int tls12_gcm_decrypt(const BLOCK_CIPHER_KEY *key, const uint8_t fixed_iv
 	return 1;
 }
 
-static int tls12_record_cbc_decrypt(const HMAC_CTX *hmac_ctx, const BLOCK_CIPHER_KEY *cbc_key,
-	const uint8_t seq_num[8], const uint8_t *in, size_t inlen,
-	uint8_t *out, size_t *outlen)
-{
-	if (tls12_cbc_decrypt(hmac_ctx, cbc_key, seq_num, in,
-		in + 5, inlen - 5,
-		out + 5, outlen) != 1) {
-		error_print();
-		return -1;
-	}
-
-	out[0] = in[0];
-	out[1] = in[1];
-	out[2] = in[2];
-	out[3] = (uint8_t)((*outlen) >> 8);
-	out[4] = (uint8_t)(*outlen);
-	(*outlen) += 5;
-
-	return 1;
-}
-
-static int tls12_record_gcm_decrypt(const BLOCK_CIPHER_KEY *key, const uint8_t fixed_iv[4],
+int tls12_record_gcm_decrypt(const BLOCK_CIPHER_KEY *key, const uint8_t fixed_iv[4],
 	const uint8_t seq_num[8], const uint8_t *in, size_t inlen,
 	uint8_t *out, size_t *outlen)
 {
@@ -400,7 +184,7 @@ static int tls12_record_encrypt(int cipher_suite,
 		break;
 	case TLS_cipher_ecdhe_sm4_cbc_sm3:
 	case TLS_cipher_ecdhe_ecdsa_with_aes_128_cbc_sha256:
-		if (tls12_record_cbc_encrypt(hmac_ctx, key, seq_num, in, inlen, out, outlen) != 1) {
+		if (tls_record_cbc_encrypt(hmac_ctx, key, seq_num, in, inlen, out, outlen) != 1) {
 			error_print();
 			return -1;
 		}
@@ -427,7 +211,7 @@ int tls12_record_decrypt(int cipher_suite, const HMAC_CTX *hmac_ctx,
 		break;
 	case TLS_cipher_ecdhe_sm4_cbc_sm3:
 	case TLS_cipher_ecdhe_ecdsa_with_aes_128_cbc_sha256:
-		if (tls12_record_cbc_decrypt(hmac_ctx, key, seq_num, in, inlen, out, outlen) != 1) {
+		if (tls_record_cbc_decrypt(hmac_ctx, key, seq_num, in, inlen, out, outlen) != 1) {
 			error_print();
 			return -1;
 		}
diff --git a/src/tls_trace.c b/src/tls_trace.c
index a6c62ddf..50a6769f 100644
--- a/src/tls_trace.c
+++ b/src/tls_trace.c
@@ -95,8 +95,12 @@ int tls_cipher_suite_from_name(const char *name)
 		return TLS_cipher_aes_128_gcm_sha256;
 	} else if (!strcmp(name, "TLS_ECDHE_SM4_CBC_SM3")) {
 		return TLS_cipher_ecdhe_sm4_cbc_sm3;
+	} else if (!strcmp(name, "TLS_ECDHE_SM4_GCM_SM3")) {
+		return TLS_cipher_ecdhe_sm4_gcm_sm3;
 	} else if (!strcmp(name, "TLS_ECC_SM4_CBC_SM3")) {
 		return TLS_cipher_ecc_sm4_cbc_sm3;
+	} else if (!strcmp(name, "TLS_ECC_SM4_GCM_SM3")) {
+		return TLS_cipher_ecc_sm4_gcm_sm3;
 	} else if (!strcmp(name, "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256")) {
 		return TLS_cipher_ecdhe_ecdsa_with_aes_128_cbc_sha256;
 	} else if (!strcmp(name, "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256")) {
diff --git a/tools/tlcp_help.h b/tools/tlcp_help.h
index 022089f2..71b6d435 100644
--- a/tools/tlcp_help.h
+++ b/tools/tlcp_help.h
@@ -9,6 +9,10 @@
 
 "Examples\n"
 "\n"
+"Supported cipher suites:\n"
+"      TLS_ECC_SM4_GCM_SM3\n"
+"      TLS_ECC_SM4_CBC_SM3\n"
+"\n"
 "  gmssl tlcp_client -host www.pbc.gov.cn -get / -outcerts certs.pem\n"
 "\n"
 "  gmssl tlcp_client -host www.pbc.gov.cn -port 443\n"
@@ -35,4 +39,3 @@
 "\n"
 "    gmssl tlcp_server -port 443 -cert double_certs.pem -key signkey.pem -pass 1234 -ex_key enckey.pem -ex_pass 1234\n"
 "    gmssl tlcp_client -host 127.0.0.1 -cacert rootcacert.pem\n"
-
diff --git a/tools/tlcp_server.c b/tools/tlcp_server.c
index ed650e5a..346e9aff 100644
--- a/tools/tlcp_server.c
+++ b/tools/tlcp_server.c
@@ -52,7 +52,10 @@ int tlcp_server_main(int argc , char **argv)
 	size_t encpasses_cnt = 0;
 	char *cacertfile = NULL;
 
-	int server_ciphers[] = { TLS_cipher_ecc_sm4_cbc_sm3, };
+	int server_ciphers[] = {
+		TLS_cipher_ecc_sm4_gcm_sm3,
+		TLS_cipher_ecc_sm4_cbc_sm3,
+	};
 
 	TLS_CTX ctx;
 	TLS_CONNECT conn;