/* ==================================================================== * Copyright (c) 2015 - 2016 The GmSSL Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. All advertising materials mentioning features or use of this * software must display the following acknowledgment: * "This product includes software developed by the GmSSL Project. * (http://gmssl.org/)" * * 4. The name "GmSSL Project" must not be used to endorse or promote * products derived from this software without prior written * permission. For written permission, please contact * guanzhi1980@gmail.com. * * 5. Products derived from this software may not be called "GmSSL" * nor may "GmSSL" appear in their names without prior written * permission of the GmSSL Project. * * 6. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the GmSSL Project * (http://gmssl.org/)" * * THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE GmSSL PROJECT OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * */ #include #include #include /* calculation of w */ int SM2_w(big n) { big n1; int w = 0; n1 = mirvar(0); w = logb2(para_n); //approximate integer log to the base 2 of para_n expb2(w, n1); //n1 = 2^w if (compare(para_n, n1) == 1) w++; if ((w % 2) == 0) w = w / 2 - 1; else w = (w + 1) / 2 - 1; return w; } /* calculation of ZA or ZB */ void SM3_z(unsigned char ID[], unsigned short int ELAN, epoint* pubKey, unsigned char hash[]) { unsigned char Px[SM2_NUMWORD] = {0}, Py[SM2_NUMWORD] = {0}; unsigned char IDlen[2] = {0}; big x, y; SM3_STATE md; x = mirvar(0); y = mirvar(0); epoint_get(pubKey, x, y); big_to_bytes(SM2_NUMWORD, x, Px, 1); big_to_bytes(SM2_NUMWORD, y, Py, 1); memcpy(IDlen, &ELAN + 1, 1); memcpy(IDlen + 1, &ELAN, 1); SM3_init(&md); SM3_process(&md, IDlen, 2); SM3_process(&md, ID, ELAN / 8); SM3_process(&md, SM2_a, SM2_NUMWORD); SM3_process(&md, SM2_b, SM2_NUMWORD); SM3_process(&md, SM2_Gx, SM2_NUMWORD); SM3_process(&md, SM2_Gy, SM2_NUMWORD); SM3_process(&md, Px, SM2_NUMWORD); SM3_process(&md, Py, SM2_NUMWORD); SM3_done(&md, hash); return; } /* calculate RA */ int SM2_standard_keyex_init_i(big ra, epoint* RA) { return SM2_standard_keygeneration(ra, RA); } /* calculate RB and a secret key */ 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[]) { SM3_STATE md; int i = 0, w = 0; unsigned char Z[SM2_NUMWORD * 2 + SM3_len / 4] = {0}; unsigned char x1y1[SM2_NUMWORD * 2] = {0}; unsigned char x2y2[SM2_NUMWORD * 2] = {0}; unsigned char temp = 0x02; big x1, y1, x1_, x2, y2, x2_, tmp, Vx, Vy, temp_x, temp_y; //mip = mirsys(1000, 16); //mip->IOBASE = 16; x1 = mirvar(0); y1 = mirvar(0); x1_ = mirvar(0); x2 = mirvar(0); y2 = mirvar(0); x2_ = mirvar(0); tmp = mirvar(0); Vx = mirvar(0); Vy = mirvar(0); temp_x = mirvar(0); temp_y = mirvar(0); w = SM2_w(para_n); //--------B2: RB = [rb]G = (x2, y2)-------- SM2_standard_keygeneration(rb, RB); epoint_get(RB, x2, y2); big_to_bytes(SM2_NUMWORD, x2, x2y2, 1); big_to_bytes(SM2_NUMWORD, y2, x2y2 + SM2_NUMWORD, 1); //--------B3: x2_ = 2^w + x2 & (2^w - 1)-------- expb2(w, x2_); //x2_ = 2^w divide(x2, x2_, tmp); //x2 = x2 mod x2_ = x2 & (2^w - 1) add(x2_, x2, x2_); divide(x2_, para_n, tmp); //x2_ = n mod q //--------B4: tB = (dB + x2_ * rB) mod n-------- multiply(x2_, rb, x2_); add(dB, x2_, x2_); divide(x2_, para_n, tmp); //--------B5: x1_ = 2^w + x1 & (2^w - 1)-------- if (Test_Point(RA) != 0) return ERR_KEYEX_RA; epoint_get(RA, x1, y1); big_to_bytes(SM2_NUMWORD, x1, x1y1, 1); big_to_bytes(SM2_NUMWORD, y1, x1y1 + SM2_NUMWORD, 1); expb2(w, x1_); //x1_ = 2^w divide(x1, x1_, tmp); //x1 = x1 mod x1_ = x1 & (2^w - 1) add(x1_,x1, x1_); divide(x1_, para_n, tmp); //x1_ = n mod q //--------B6: V = [h * tB](PA + [x1_]RA)-------- ecurve_mult(x1_, RA, V); //v = [x1_]RA epoint_get(V, temp_x, temp_y); ecurve_add(PA, V); //V = PA + V epoint_get(V, temp_x, temp_y); multiply(para_h, x2_, x2_); //tB = tB * h ecurve_mult(x2_, V, V); if (point_at_infinity(V) == 1) return ERR_INFINITY_POINT; epoint_get(V, Vx, Vy); big_to_bytes(SM2_NUMWORD, Vx, Z, 1); big_to_bytes(SM2_NUMWORD, Vy, Z + SM2_NUMWORD, 1); //------------B7:KB = KDF(VX, VY, ZA, ZB, KLEN)---------- memcpy(Z + SM2_NUMWORD * 2, ZA, SM3_len / 8); memcpy(Z + SM2_NUMWORD * 2 + SM3_len / 8, ZB, SM3_len / 8); SM3_kdf(Z, SM2_NUMWORD * 2 + SM3_len / 4, klen / 8, K); //---------------B8:(optional)SB = hash(0x02 || Vy || HASH(Vx || ZA || ZB || x1 || y1 || x2 || y2)------------- SM3_init(&md); SM3_process(&md, Z, SM2_NUMWORD); SM3_process(&md, ZA, SM3_len / 8); SM3_process(&md, ZB, SM3_len / 8); SM3_process(&md, x1y1, SM2_NUMWORD * 2); SM3_process(&md, x2y2, SM2_NUMWORD * 2); SM3_done(&md, hash); SM3_init(&md); SM3_process(&md, &temp, 1); SM3_process(&md, Z + SM2_NUMWORD, SM2_NUMWORD); SM3_process(&md, hash, SM3_len / 8); SM3_done(&md, hash); return 0; } /* initiator A calculates the secret key out of RA and RB, and calculates a 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[]) { SM3_STATE md; int i = 0, w = 0; unsigned char Z[SM2_NUMWORD * 2 + SM3_len / 4] = {0}; unsigned char x1y1[SM2_NUMWORD * 2] = {0}; unsigned char x2y2[SM2_NUMWORD * 2] = {0}; unsigned char hash[SM2_NUMWORD], S1[SM2_NUMWORD]; unsigned char temp[2] = {0x02, 0x03}; big x1, y1, x1_, x2, y2, x2_, tmp, Ux, Uy, temp_x, temp_y, tA; epoint* U; //mip = mirsys(1000, 16); //mip->IOBASE = 16; U = epoint_init(); x1 = mirvar(0); y1 = mirvar(0); x1_ = mirvar(0); x2 = mirvar(0); y2 = mirvar(0); x2_ = mirvar(0); tmp = mirvar(0); Ux = mirvar(0); Uy = mirvar(0); temp_x = mirvar(0); temp_y = mirvar(0); tA=mirvar(0); w = SM2_w(para_n); epoint_get(RA, x1, y1); big_to_bytes(SM2_NUMWORD, x1, x1y1, TRUE); big_to_bytes(SM2_NUMWORD, y1, x1y1 + SM2_NUMWORD, TRUE); //--------A4: x1_ = 2^w + x2 & (2^w - 1)-------- expb2(w, x1_); //x1_ = 2^w divide(x1, x1_, tmp); //x1 = x1 mod x1_ = x1 & (2^w - 1) add(x1_, x1, x1_); divide(x1_, para_n, tmp); //-------- A5:tA = (dA + x1_ * rA) mod n-------- multiply(x1_, ra, tA); divide(tA, para_n, tmp); add(tA, dA, tA); divide(tA, para_n, tmp); //-------- A6:x2_ = 2^w + x2 & (2^w - 1)----------------- if (Test_Point(RB) != 0) return ERR_KEYEX_RB;////////////////////////////////// epoint_get(RB, x2, y2); big_to_bytes(SM2_NUMWORD, x2, x2y2, TRUE); big_to_bytes(SM2_NUMWORD, y2, x2y2 + SM2_NUMWORD, TRUE); expb2(w, x2_); //x2_ = 2^w divide(x2, x2_, tmp); //x2 = x2 mod x2_ = x2 & (2^w - 1) add(x2_, x2, x2_); divide(x2_, para_n, tmp); //--------A7:U = [h * tA](PB + [x2_]RB)----------------- ecurve_mult(x2_, RB, U); //U = [x2_]RB epoint_get(U, temp_x, temp_y); ecurve_add(PB, U); //U = PB + U epoint_get(U, temp_x, temp_y); multiply(para_h, tA, tA); //tA = tA * h divide(tA, para_n, tmp); ecurve_mult(tA, U, U); if (point_at_infinity(U) == 1) return ERR_INFINITY_POINT; epoint_get(U, Ux, Uy); big_to_bytes(SM2_NUMWORD, Ux, Z, 1); big_to_bytes(SM2_NUMWORD, Uy, Z + SM2_NUMWORD, 1); //------------A8:KA = KDF(UX, UY, ZA, ZB, KLEN)---------- memcpy(Z + SM2_NUMWORD * 2, ZA, SM3_len / 8); memcpy(Z + SM2_NUMWORD * 2 + SM3_len / 8, ZB, SM3_len / 8); SM3_kdf(Z, SM2_NUMWORD * 2 + SM3_len / 4, klen / 8, K); //---------------A9:(optional) S1 = Hash(0x02 || Uy || Hash(Ux || ZA || ZB || x1 || y1 || x2 || y2))----------- SM3_init (&md); SM3_process(&md, Z, SM2_NUMWORD); SM3_process(&md, ZA, SM3_len / 8); SM3_process(&md, ZB, SM3_len / 8); SM3_process(&md, x1y1, SM2_NUMWORD * 2); SM3_process(&md, x2y2, SM2_NUMWORD * 2); SM3_done(&md, hash); SM3_init(&md); SM3_process(&md, temp, 1); SM3_process(&md, Z + SM2_NUMWORD, SM2_NUMWORD); SM3_process(&md, hash, SM3_len / 8); SM3_done(&md, S1); //test S1 = SB? if (memcmp(S1, SB, SM2_NUMWORD) != 0) return ERR_EQUAL_S1SB; //---------------A10 SA = Hash(0x03 || yU || Hash(xU || ZA || ZB || x1 || y1 || x2 || y2))------------- SM3_init(&md); SM3_process(&md, &temp[1], 1); SM3_process(&md, Z + SM2_NUMWORD, SM2_NUMWORD); SM3_process(&md, hash, SM3_len / 8); SM3_done(&md, SA); return 0; } /* (optional)Step B10: verifies the hash value received from initiator A */ int SM2_standard_keyex_re_ii(epoint *V, epoint *RA, epoint *RB, unsigned char ZA[], unsigned char ZB[], unsigned char SA[]) { big x1, y1, x2, y2, Vx, Vy; unsigned char hash[SM2_NUMWORD], S2[SM2_NUMWORD]; unsigned char temp = 0x03; unsigned char xV[SM2_NUMWORD], yV[SM2_NUMWORD]; unsigned char x1y1[SM2_NUMWORD * 2] = {0}; unsigned char x2y2[SM2_NUMWORD * 2] = {0}; SM3_STATE md; x1 = mirvar(0); y1 = mirvar(0); x2 = mirvar(0); y2 = mirvar(0); Vx = mirvar(0); Vy = mirvar(0); epoint_get(RA, x1, y1); epoint_get(RB, x2, y2); epoint_get(V, Vx, Vy); big_to_bytes(SM2_NUMWORD, Vx, xV, TRUE); big_to_bytes(SM2_NUMWORD, Vy, yV, TRUE); big_to_bytes(SM2_NUMWORD, x1, x1y1, TRUE); big_to_bytes(SM2_NUMWORD, y1, x1y1 + SM2_NUMWORD, TRUE); big_to_bytes(SM2_NUMWORD, x2, x2y2, TRUE); big_to_bytes(SM2_NUMWORD, y2, x2y2 + SM2_NUMWORD, TRUE); //---------------B10:(optional) S2 = Hash(0x03 || Vy || Hash(Vx || ZA || ZB || x1 || y1 || x2 || y2)) SM3_init(&md); SM3_process(&md, xV, SM2_NUMWORD); SM3_process(&md, ZA, SM3_len / 8); SM3_process(&md, ZB, SM3_len / 8); SM3_process(&md, x1y1, SM2_NUMWORD * 2); SM3_process(&md, x2y2, SM2_NUMWORD * 2); SM3_done(&md, hash); SM3_init(&md); SM3_process(&md, &temp, 1); SM3_process(&md, yV, SM2_NUMWORD); SM3_process(&md, hash, SM3_len / 8); SM3_done(&md, S2); if (memcmp(S2, SA, SM3_len / 8) != 0) return ERR_EQUAL_S2SA; return 0; } /* self check of SM2 key exchange */ int SM2_standard_keyex_selftest() { //standard data unsigned char std_priKeyA[SM2_NUMWORD] = {0x81, 0xEB, 0x26, 0xE9, 0x41, 0xBB, 0x5A, 0xF1, 0x6D, 0xF1, 0x16, 0x49, 0x5F, 0x90, 0x69, 0x52, 0x72, 0xAE, 0x2C, 0xD6, 0x3D, 0x6C, 0x4A, 0xE1, 0x67, 0x84, 0x18, 0xBE, 0x48, 0x23, 0x00, 0x29}; unsigned char std_pubKeyA[SM2_NUMWORD * 2] = {0x16, 0x0E, 0x12, 0x89, 0x7D, 0xF4, 0xED, 0xB6, 0x1D, 0xD8, 0x12, 0xFE, 0xB9, 0x67, 0x48, 0xFB, 0xD3, 0xCC, 0xF4, 0xFF, 0xE2, 0x6A, 0xA6, 0xF6, 0xDB, 0x95, 0x40, 0xAF, 0x49, 0xC9, 0x42, 0x32, 0x4A, 0x7D, 0xAD, 0x08, 0xBB, 0x9A, 0x45, 0x95, 0x31, 0x69, 0x4B, 0xEB, 0x20, 0xAA, 0x48, 0x9D, 0x66, 0x49, 0x97, 0x5E, 0x1B, 0xFC, 0xF8, 0xC4, 0x74, 0x1B, 0x78, 0xB4, 0xB2, 0x23, 0x00, 0x7F}; unsigned char std_randA[SM2_NUMWORD] = {0xD4, 0xDE, 0x15, 0x47, 0x4D, 0xB7, 0x4D, 0x06, 0x49, 0x1C, 0x44, 0x0D, 0x30, 0x5E, 0x01, 0x24, 0x00, 0x99, 0x0F, 0x3E, 0x39, 0x0C, 0x7E, 0x87, 0x15, 0x3C, 0x12, 0xDB, 0x2E, 0xA6, 0x0B, 0xB3}; unsigned char std_priKeyB[SM2_NUMWORD] = {0x78, 0x51, 0x29, 0x91, 0x7D, 0x45, 0xA9, 0xEA, 0x54, 0x37, 0xA5, 0x93, 0x56, 0xB8, 0x23, 0x38, 0xEA, 0xAD, 0xDA, 0x6C, 0xEB, 0x19, 0x90, 0x88, 0xF1, 0x4A, 0xE1, 0x0D, 0xEF, 0xA2, 0x29, 0xB5}; unsigned char std_pubKeyB[SM2_NUMWORD * 2] = {0x6A, 0xE8, 0x48, 0xC5, 0x7C, 0x53, 0xC7, 0xB1, 0xB5, 0xFA, 0x99, 0xEB, 0x22, 0x86, 0xAF, 0x07, 0x8B, 0xA6, 0x4C, 0x64, 0x59, 0x1B, 0x8B, 0x56, 0x6F, 0x73, 0x57, 0xD5, 0x76, 0xF1, 0x6D, 0xFB, 0xEE, 0x48, 0x9D, 0x77, 0x16, 0x21, 0xA2, 0x7B, 0x36, 0xC5, 0xC7, 0x99, 0x20, 0x62, 0xE9, 0xCD, 0x09, 0xA9, 0x26, 0x43, 0x86, 0xF3, 0xFB, 0xEA, 0x54, 0xDF, 0xF6, 0x93, 0x05, 0x62, 0x1C, 0x4D}; unsigned char std_randB[SM2_NUMWORD] = {0x7E, 0x07, 0x12, 0x48, 0x14, 0xB3, 0x09, 0x48, 0x91, 0x25, 0xEA, 0xED, 0x10, 0x11, 0x13, 0x16, 0x4E, 0xBF, 0x0F, 0x34, 0x58, 0xC5, 0xBD, 0x88, 0x33, 0x5C, 0x1F, 0x9D, 0x59, 0x62, 0x43, 0xD6}; unsigned char std_IDA[16] = {0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38}; unsigned char std_IDB[16] = {0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38}; unsigned short int std_ENTLA = 0x0080; unsigned short int std_ENTLB = 0x0080; unsigned char std_ZA[SM3_len] = {0x3B, 0x85, 0xA5, 0x71, 0x79, 0xE1, 0x1E, 0x7E, 0x51, 0x3A, 0xA6, 0x22, 0x99, 0x1F, 0x2C, 0xA7, 0x4D, 0x18, 0x07, 0xA0, 0xBD, 0x4D, 0x4B, 0x38, 0xF9, 0x09, 0x87, 0xA1, 0x7A, 0xC2, 0x45, 0xB1}; unsigned char std_ZB[SM3_len] = {0x79, 0xC9, 0x88, 0xD6, 0x32, 0x29, 0xD9, 0x7E, 0xF1, 0x9F, 0xE0, 0x2C, 0xA1, 0x05, 0x6E, 0x01, 0xE6, 0xA7, 0x41, 0x1E, 0xD2, 0x46, 0x94, 0xAA, 0x8F, 0x83, 0x4F, 0x4A, 0x4A, 0xB0, 0x22, 0xF7}; unsigned char std_RA[SM2_NUMWORD * 2] = {0x64, 0xCE, 0xD1, 0xBD, 0xBC, 0x99, 0xD5, 0x90, 0x04, 0x9B, 0x43, 0x4D, 0x0F, 0xD7, 0x34, 0x28, 0xCF, 0x60, 0x8A, 0x5D, 0xB8, 0xFE, 0x5C, 0xE0, 0x7F, 0x15, 0x02, 0x69, 0x40, 0xBA, 0xE4, 0x0E, 0x37, 0x66, 0x29, 0xC7, 0xAB, 0x21, 0xE7, 0xDB, 0x26, 0x09, 0x22, 0x49, 0x9D, 0xDB, 0x11, 0x8F, 0x07, 0xCE, 0x8E, 0xAA, 0xE3, 0xE7, 0x72, 0x0A, 0xFE, 0xF6, 0xA5, 0xCC, 0x06, 0x20, 0x70, 0xC0}; unsigned char std_K[16] = {0x6C, 0x89, 0x34, 0x73, 0x54, 0xDE, 0x24, 0x84, 0xC6, 0x0B, 0x4A, 0xB1, 0xFD, 0xE4, 0xC6, 0xE5}; unsigned char std_RB[SM2_NUMWORD * 2] = {0xAC, 0xC2, 0x76, 0x88, 0xA6, 0xF7, 0xB7, 0x06, 0x09, 0x8B, 0xC9, 0x1F, 0xF3, 0xAD, 0x1B, 0xFF, 0x7D, 0xC2, 0x80, 0x2C, 0xDB, 0x14, 0xCC, 0xCC, 0xDB, 0x0A, 0x90, 0x47, 0x1F, 0x9B, 0xD7, 0x07, 0x2F, 0xED, 0xAC, 0x04, 0x94, 0xB2, 0xFF, 0xC4, 0xD6, 0x85, 0x38, 0x76, 0xC7, 0x9B, 0x8F, 0x30, 0x1C, 0x65, 0x73, 0xAD, 0x0A, 0xA5, 0x0F, 0x39, 0xFC, 0x87, 0x18, 0x1E, 0x1A, 0x1B, 0x46, 0xFE}; unsigned char std_SB[SM3_len] = {0xD3, 0xA0, 0xFE, 0x15, 0xDE, 0xE1, 0x85, 0xCE, 0xAE, 0x90, 0x7A, 0x6B, 0x59, 0x5C, 0xC3, 0x2A, 0x26, 0x6E, 0xD7, 0xB3, 0x36, 0x7E, 0x99, 0x83, 0xA8, 0x96, 0xDC, 0x32, 0xFA, 0x20, 0xF8, 0xEB}; int std_Klen = 128; //bit len int temp; big x, y, dA, dB, rA, rB; epoint* pubKeyA, *pubKeyB, *RA, *RB, *V; unsigned char hash[SM3_len / 8] = {0}; unsigned char ZA[SM3_len / 8] = {0}; unsigned char ZB[SM3_len / 8] = {0}; unsigned char xy[SM2_NUMWORD * 2] = {0}; unsigned char *KA, *KB; unsigned char SA[SM3_len / 8]; KA = malloc(std_Klen / 8); KB = malloc(std_Klen / 8); mip = mirsys(1000, 16); mip->IOBASE = 16; x = mirvar(0); y = mirvar(0); dA = mirvar(0); dB = mirvar(0); rA = mirvar(0); rB = mirvar(0); pubKeyA = epoint_init(); pubKeyB = epoint_init(); RA = epoint_init(); RB = epoint_init(); V = epoint_init(); SM2_init(); bytes_to_big(SM2_NUMWORD, std_priKeyA, dA); bytes_to_big(SM2_NUMWORD, std_priKeyB, dB); bytes_to_big(SM2_NUMWORD, std_randA, rA); bytes_to_big(SM2_NUMWORD, std_randB, rB); bytes_to_big(SM2_NUMWORD, std_pubKeyA, x); bytes_to_big(SM2_NUMWORD, std_pubKeyA + SM2_NUMWORD, y); epoint_set(x, y, 0, pubKeyA); bytes_to_big(SM2_NUMWORD, std_pubKeyB, x); bytes_to_big(SM2_NUMWORD, std_pubKeyB + SM2_NUMWORD, y); epoint_set(x, y, 0, pubKeyB); SM3_z(std_IDA, std_ENTLA, pubKeyA, ZA); if (memcmp(ZA, std_ZA, SM3_len / 8) != 0) return ERR_SELFTEST_Z; SM3_z(std_IDB, std_ENTLB, pubKeyB, ZB); if (memcmp(ZB, std_ZB, SM3_len / 8) != 0) return ERR_SELFTEST_Z; temp = SM2_standard_keyex_init_i(rA, RA); if (temp) return temp; epoint_get(RA, x, y); big_to_bytes(SM2_NUMWORD, x, xy, 1); big_to_bytes(SM2_NUMWORD, y, xy + SM2_NUMWORD, 1); if (memcmp(xy, std_RA, SM2_NUMWORD * 2) != 0) return ERR_SELFTEST_INI_I; temp = SM2_standard_keyex_re_i(rB, dB, RA, pubKeyA, ZA, ZB, KA, std_Klen, RB, V, hash); if (temp) return temp; if (memcmp(KA, std_K, std_Klen / 8) != 0) return ERR_SELFTEST_RES_I; temp = SM2_standard_keyex_init_ii(rA, dA, RA, RB, pubKeyB, ZA, ZB, hash, KB, std_Klen, SA); if (temp) return temp; if (memcmp(KB, std_K, std_Klen / 8) != 0) return ERR_SELFTEST_INI_II; if (SM2_standard_keyex_re_ii(V, RA, RB, ZA, ZB, SA) != 0) return ERR_EQUAL_S2SA; free(KA); free(KB); return 0; }