diff --git a/include/openssl/sm2_standard_exch.h b/include/openssl/sm2_standard_exch.h
new file mode 100644
index 00000000..b6a6d217
--- /dev/null
+++ b/include/openssl/sm2_standard_exch.h
@@ -0,0 +1,51 @@
+#include "miracl.h"
+#include "mirdef.h"
+
+#define SM2_WORDSIZE 8
+#define SM2_NUMBITS 256
+#define SM2_NUMWORD (SM2_NUMBITS / SM2_WORDSIZE)	//32
+#define ERR_INFINITY_POINT 0x00000001
+#define ERR_NOT_VALID_ELEMENT 0x00000002
+#define ERR_NOT_VALID_POINT 0x00000003
+#define ERR_ORDER 0x00000004
+#define ERR_ECURVE_INIT 0x00000005
+#define ERR_KEYEX_RA 0x00000006
+#define ERR_KEYEX_RB 0x00000007
+#define ERR_EQUAL_S1SB 0x00000008
+#define ERR_EQUAL_S2SA 0x00000009
+#define ERR_SELFTEST_Z 0x0000000A
+#define ERR_SELFTEST_INI_I 0x0000000B
+#define ERR_SELFTEST_RES_I 0x0000000C
+#define ERR_SELFTEST_INI_II 0x0000000D
+
+unsigned char SM2_p[32] = {0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+						   0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+unsigned char SM2_a[32] = {0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+						   0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC};
+unsigned char SM2_b[32] = {0x28, 0xE9, 0xFA, 0x9E, 0x9D, 0x9F, 0x5E, 0x34, 0x4D, 0x5A, 0x9E, 0x4B, 0xCF, 0x65, 0x09, 0xA7,
+						   0xF3, 0x97, 0x89, 0xF5, 0x15, 0xAB, 0x8F, 0x92, 0xDD, 0xBC, 0xBD, 0x41, 0x4D, 0x94, 0x0E, 0x93};
+unsigned char SM2_n[32] = {0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
+						   0x72, 0x03, 0xDF, 0x6B, 0x21, 0xC6, 0x05, 0x2B, 0x53, 0xBB, 0xF4, 0x09, 0x39, 0xD5, 0x41, 0x23};
+unsigned char SM2_Gx[32] = {0x32, 0xC4, 0xAE, 0x2C, 0x1F, 0x19, 0x81, 0x19, 0x5F, 0x99, 0x04, 0x46, 0x6A, 0x39, 0xC9, 0x94,
+							0x8F, 0xE3, 0x0B, 0xBF, 0xF2, 0x66, 0x0B, 0xE1, 0x71, 0x5A, 0x45, 0x89, 0x33, 0x4C, 0x74, 0xC7};
+unsigned char SM2_Gy[32] = {0xBC, 0x37, 0x36, 0xA2, 0xF4, 0xF6, 0x77, 0x9C, 0x59, 0xBD, 0xCE, 0xE3, 0x6B, 0x69, 0x21, 0x53,
+							0xD0, 0xA9, 0x87, 0x7C, 0xC6, 0x2A, 0x47, 0x40, 0x02, 0xDF, 0x32, 0xE5, 0x21, 0x39, 0xF0, 0xA0};
+unsigned char SM2_h[32] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+						   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01};
+
+big para_p, para_a, para_b, para_n, para_Gx, para_Gy, para_h;
+epoint *G;
+miracl *mip;
+
+
+int SM2_w(big n);
+void SM3_z(unsigned char ID[], unsigned short int ELAN, epoint* pubKey, unsigned char hash[]);
+int Test_Point(epoint* point);
+int Test_PubKey(epoint *pubKey);
+int SM2_standard_init();
+int SM2_standard_keygeneration(big priKey, epoint *pubKey);
+int SM2_standard_keyex_init_i(big ra, epoint* RA);
+int SM2_standard_keyex_re_i(big rb, big dB, epoint* RA, epoint* PA, unsigned char ZA[], unsigned char ZB[], unsigned char K[], int klen, epoint* RB, epoint* V, unsigned char hash[]);
+int SM2_standard_keyex_init_ii(big ra, big dA, epoint* RA, epoint* RB, epoint* PB, unsigned char ZA[], unsigned char ZB[], unsigned char SB[], unsigned char K[], int klen, unsigned char SA[]);
+int SM2_standard_keyex_re_ii(epoint *V, epoint *RA, epoint *RB, unsigned char ZA[], unsigned char ZB[], unsigned char SA[]);
+int SM2_standard_keyex_selftest();