diff --git a/crypto/ec/ec_kmeth.c b/crypto/ec/ec_kmeth.c
index eb469ba3..86ab7c81 100644
--- a/crypto/ec/ec_kmeth.c
+++ b/crypto/ec/ec_kmeth.c
@@ -24,7 +24,13 @@ static const EC_KEY_METHOD openssl_ec_key_method = {
     ossl_ecdsa_sign_setup,
     ossl_ecdsa_sign_sig,
     ossl_ecdsa_verify,
-    ossl_ecdsa_verify_sig
+    ossl_ecdsa_verify_sig,
+#ifndef OPENSSL_NO_SM2
+    ossl_ecies_encrypt,
+    ossl_ecies_do_encrypt,
+    ossl_ecies_decrypt,
+    ossl_ecies_do_decrypt,
+#endif
 };
 
 static const EC_KEY_METHOD *default_ec_key_meth = &openssl_ec_key_method;
@@ -315,3 +321,18 @@ void EC_KEY_METHOD_get_verify(EC_KEY_METHOD *meth,
     if (pverify_sig != NULL)
         *pverify_sig = meth->verify_sig;
 }
+
+#ifndef OPENSSL_NO_SM2
+void EC_KEY_METHOD_get_encrypt(EC_KEY_METHOD *meth,
+                               int (**pencrypt)(int a),
+                               int (**pdo_encrypt)(int a))
+{
+    if (pencrypt != NULL)
+        *pencrypt = meth->encrypt;
+    if (pdo_encrypt != NULL)
+        *pdo_encrypt = meth->do_encrypt;
+}
+
+
+
+#endif
diff --git a/crypto/ec/ec_lcl.h b/crypto/ec/ec_lcl.h
index 56f4447e..b2912e42 100644
--- a/crypto/ec/ec_lcl.h
+++ b/crypto/ec/ec_lcl.h
@@ -624,3 +624,14 @@ int X25519(uint8_t out_shared_key[32], const uint8_t private_key[32],
            const uint8_t peer_public_value[32]);
 void X25519_public_from_private(uint8_t out_public_value[32],
                                 const uint8_t private_key[32]);
+
+#ifndef OPENSSL_NO_SM2
+int ossl_ecies_encrypt(int type, const unsigned char *in, size_t inlen,
+                       unsigned char *out, size_t *outlen, EC_KEY *ec_key);
+ECIES_CIPHERTEXT_VALUE *ossl_ecies_do_encrypt(int type, const unsigned char *in,
+                                              size_t inlen, EC_KEY *ec_key);
+int ossl_ecies_decrypt(int type, const unsigned char *in, size_t inlen,
+                       unsigned char *out, size_t *outlen, EC_KEY *ec_key);
+int ossl_ecies_do_decrypt(int type, const ECIES_CIPHERTEXT_VALUE *in,
+                      unsigned char *out, size_t *outlen, EC_KEY *ec_key);
+#endif
diff --git a/crypto/ec/ecdsa_ossl.c b/crypto/ec/ecdsa_ossl.c
index d67c4852..d5916909 100644
--- a/crypto/ec/ecdsa_ossl.c
+++ b/crypto/ec/ecdsa_ossl.c
@@ -297,6 +297,19 @@ ECDSA_SIG *ossl_ecdsa_sign_sig(const unsigned char *dgst, int dgst_len,
     }
     while (1);
 
+#if 0
+    if (!BN_rshift1(tmp, order)) {
+        ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, ERR_R_BN_LIB);
+        goto err;
+    }
+    if (BN_cmp(ret->s, tmp) <= 0) {
+        if (!BN_sub(ret->s, order, ret->s)) {
+            ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, ERR_R_BN_LIB);
+            goto err;
+        }
+    }
+#endif
+
     ok = 1;
  err:
     if (!ok) {
@@ -392,6 +405,18 @@ int ossl_ecdsa_verify_sig(const unsigned char *dgst, int dgst_len,
         ret = 0;                /* signature is invalid */
         goto err;
     }
+#if 0
+    if (!BN_rshift1(m, order)) {
+        ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_BN_LIB);
+        goto err;
+    }
+    if (BN_cmp(sig->r, m) <= 0) {
+        ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, EC_R_BAD_SIGNATURE);
+        ret = 0;
+        goto err;
+    }
+#endif
+
     /* calculate tmp1 = inv(S) mod order */
     if (!BN_mod_inverse(u2, sig->s, order, ctx)) {
         ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_BN_LIB);
diff --git a/crypto/ecies/ecies_ossl.c b/crypto/ecies/ecies_ossl.c
new file mode 100644
index 00000000..ccff2d73
--- /dev/null
+++ b/crypto/ecies/ecies_ossl.c
@@ -0,0 +1,28 @@
+
+
+
+
+int ossl_ecies_encrypt(int type, const unsigned char *in, size_t inlen,
+                       unsigned char *out, size_t *outlen, EC_KEY *ec_key)
+{
+	return 0;
+}
+
+ECIES_CIPHERTEXT_VALUE *ossl_ecies_do_encrypt(int type, const unsigned char *in,
+                                              size_t inlen, EC_KEY *ec_key)
+{
+	return NULL;
+}
+
+int ossl_ecies_decrypt(int type, const unsigned char *in, size_t inlen,
+                       unsigned char *out, size_t *outlen, EC_KEY *ec_key)
+{
+	return 0;
+}
+
+int ossl_ecies_do_decrypt(int type, const ECIES_CIPHERTEXT_VALUE *in,
+                      unsigned char *out, size_t *outlen, EC_KEY *ec_key)
+{
+	return NULL;
+}
+
diff --git a/crypto/sm2/sm2_sign.c b/crypto/sm2/sm2_sign.c
index db50f025..aa037990 100644
--- a/crypto/sm2/sm2_sign.c
+++ b/crypto/sm2/sm2_sign.c
@@ -220,8 +220,6 @@ static ECDSA_SIG *sm2_do_sign(const unsigned char *dgst, int dgstlen,
 	}
 #endif
 
-		fprintf(stderr, " --- %s %d\n", __func__, __LINE__);
-
 	do {
 		/* use or compute k and (kG).x */
 		if (!in_k || !in_x) {
@@ -237,8 +235,6 @@ static ECDSA_SIG *sm2_do_sign(const unsigned char *dgst, int dgstlen,
 				goto end;
 			}
 		}
-		fprintf(stderr, " --- %s %d\n", __func__, __LINE__);
-
 
 		/* r = e + x (mod n) */
 		if (!BN_mod_add(ret->r, ret->r, e, order, ctx)) {
@@ -246,13 +242,10 @@ static ECDSA_SIG *sm2_do_sign(const unsigned char *dgst, int dgstlen,
 			goto end;
 		}
 
-		fprintf(stderr, " --- %s %d\n", __func__, __LINE__);
-
 		if (!BN_mod_add(bn, ret->r, ck, order, ctx)) {
 			ECerr(EC_F_SM2_DO_SIGN, ERR_R_BN_LIB);
 			goto end;
 		}
-		fprintf(stderr, " --- %s %d\n", __func__, __LINE__);
 
 		/* check r != 0 && r + k != n */
 		if (BN_is_zero(ret->r) || BN_is_zero(bn)) {
@@ -263,28 +256,21 @@ static ECDSA_SIG *sm2_do_sign(const unsigned char *dgst, int dgstlen,
 				continue;
 		}
 
-		fprintf(stderr, " --- %s %d\n", __func__, __LINE__);
 		/* s = ((1 + d)^-1 * (k - rd)) mod n */
 		if (!BN_one(bn)) {
 			ECerr(EC_F_SM2_DO_SIGN, ERR_R_BN_LIB);
 			goto end;
 		}
-		if (ret->s == NULL) {
-			fprintf(stderr, " --- %s %d\n", __func__, __LINE__);
-		}
 
-		fprintf(stderr, " --- %s %d\n", __func__, __LINE__);
 		if (!BN_mod_add(ret->s, priv_key, bn, order, ctx)) {
 			ECerr(EC_F_SM2_DO_SIGN, ERR_R_BN_LIB);
 			goto end;
 		}
-		fprintf(stderr, " --- %s %d\n", __func__, __LINE__);
 		if (!BN_mod_inverse(ret->s, ret->s, order, ctx)) {
 			ECerr(EC_F_SM2_DO_SIGN, ERR_R_BN_LIB);
 			goto end;
 		}
 
-		fprintf(stderr, " --- %s %d\n", __func__, __LINE__);
 		if (!BN_mod_mul(bn, ret->r, priv_key, order, ctx)) {
 			ECerr(EC_F_SM2_DO_SIGN, ERR_R_BN_LIB);
 			goto end;
@@ -310,6 +296,21 @@ static ECDSA_SIG *sm2_do_sign(const unsigned char *dgst, int dgstlen,
 
 	} while (1);
 
+#if 0
+	if (!BN_rshift1(bn, order)) {
+		ECerr(EC_F_SM2_DO_SIGN, ERR_R_BN_LIB);
+		goto end;
+	}
+	if (BN_cmp(ret->r, bn) <= 0) {
+		if (!BN_sub(ret->r, order, ret->r)
+			|| !BN_sub(ret->s, order, ret->s)) {
+			ECerr(EC_F_SM2_DO_SIGN, ERR_R_BN_LIB);
+			goto end;
+		}
+	}
+
+#endif
+
 	ok = 1;
 
 end:
@@ -360,6 +361,17 @@ int sm2_do_verify(const unsigned char *dgst, int dgstlen,
 		goto end;
 	}
 
+#if 0
+	if (!BN_rshift1(t, order)) {
+		ECerr(EC_F_SM2_DO_VERIFY, ERR_R_BN_LIB);
+		goto end;
+	}
+	if (BN_cmp(sig->r, t) <= 0) {
+		ECerr(EC_F_SM2_DO_VERIFY, ERR_R_BN_LIB); //FIXME: error code
+		goto end;
+	}
+#endif
+
 	/* check r, s in [1, n-1] and r + s != 0 (mod n) */
 	if (BN_is_zero(sig->r) ||
 		BN_is_negative(sig->r) ||