Delete sm2_standard_sign.c

This commit is contained in:
GGSuchao
2017-06-25 16:55:42 +08:00
parent 41f64673d8
commit bdb3842e69

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@@ -1,390 +0,0 @@
#include "openssl/sm2_standard_sign.h"
/* Initiate SM2 curve */
int SM2_standard_init()
{
Gx = mirvar(0);
Gy = mirvar(0);
p = mirvar(0);
a = mirvar(0);
b = mirvar(0);
n = mirvar(0);
bytes_to_big(SM2_NUMWORD, SM2_Gx, Gx);
bytes_to_big(SM2_NUMWORD, SM2_Gy, Gy);
bytes_to_big(SM2_NUMWORD, SM2_p, p);
bytes_to_big(SM2_NUMWORD, SM2_a, a);
bytes_to_big(SM2_NUMWORD, SM2_b, b);
bytes_to_big(SM2_NUMWORD, SM2_n, n);
ecurve_init(a, b, p, MR_PROJECTIVE);
G = epoint_init();
nG = epoint_init();
if (!epoint_set(Gx, Gy, 0, G)) //initialise point G
{
return ERR_ECURVE_INIT;
}
ecurve_mult(n, G, nG);
if (!point_at_infinity(nG)) //test if the order of the point is n
{
return ERR_ORDER;
}
return 0;
}
/* test if the given point is on SM2 curve */
int Test_Point(epoint* point)
{
big x, y, x_3, tmp;
x = mirvar(0);
y = mirvar(0);
x_3 = mirvar(0);
tmp = mirvar(0);
//test if y^2 = x^3 + ax + b
epoint_get(point, x, y);
power(x, 3, p, x_3); //x_3 = x^3 mod p
multiply(x, a, x); //x = a * x
divide(x, p, tmp); //x = a * x mod p, tmp = a * x / p
add(x_3, x, x); //x = x^3 + ax
add(x, b, x); //x = x^3 + ax + b
divide(x, p, tmp); //x = x^3 + ax + b mod p
power(y, 2, p, y); //y = y^2 mod p
if (compare(x, y) != 0)
return ERR_NOT_VALID_POINT;
else
return 0;
}
/* test if the given public key is valid */
int Test_PubKey(epoint *pubKey)
{
big x, y, x_3, tmp;
epoint *nP;
x = mirvar(0);
y = mirvar(0);
x_3 = mirvar(0);
tmp = mirvar(0);
nP = epoint_init();
//test if the pubKey is the point at infinity
if (point_at_infinity(pubKey)) //if pubKey is point at infinity, return error;
return ERR_INFINITY_POINT;
//test if x < p and y < p both hold
epoint_get(pubKey, x, y);
if ((compare(x, p) != -1) || (compare(y, p) != -1))
return ERR_NOT_VALID_ELEMENT;
if (Test_Point(pubKey) != 0)
return ERR_NOT_VALID_POINT;
//test if the order of pubKey is equal to n
ecurve_mult(n, pubKey, nP); //nP = [n]P
if (!point_at_infinity(nP)) //if np is point NOT at infinity, return error;
return ERR_ORDER;
return 0;
}
/* test if the big x is zero */
int Test_Zero(big x)
{
big zero;
zero = mirvar(0);
if (compare(x, zero) == 0)
return 1;
else
return 0;
}
/* test if the big x is order n */
int Test_n(big x)
{
//bytes_to_big(32, SM2_n, n);
if (compare(x, n) == 0)
return 1;
else
return 0;
}
/* test if the big x belong to the range[1, n-1] */
int Test_Range(big x)
{
big one, decr_n;
one = mirvar(0);
decr_n = mirvar(0);
convert(1, one);
decr(n, 1, decr_n);
if ((compare(x, one) < 0) | (compare(x, decr_n) > 0))
return 1;
return 0;
}
/* calculate a pubKey out of a given priKey */
int SM2_standard_keygeneration(unsigned char PriKey[], unsigned char Px[], unsigned char Py[])
{
int i = 0;
big d, PAx, PAy;
epoint *PA;
SM2_standard_init();
PA = epoint_init();
d = mirvar(0);
PAx = mirvar(0);
PAy = mirvar(0);
bytes_to_big(SM2_NUMWORD, PriKey, d);
ecurve_mult(d, G, PA);
epoint_get(PA, PAx, PAy);
big_to_bytes(SM2_NUMWORD, PAx, Px, TRUE);
big_to_bytes(SM2_NUMWORD, PAy, Py, TRUE);
i = Test_PubKey(PA);
if (i)
return i;
else
return 0;
}
/* SM2 signature algorithm */
int SM2_standard_sign(unsigned char *message, int len, unsigned char ZA[], unsigned char rand[], unsigned char d[], unsigned char R[], unsigned char S[])
{
unsigned char hash[SM3_len / 8];
int M_len = len + SM3_len / 8;
unsigned char *M = NULL;
int i;
big dA, r, s, e, k, KGx, KGy;
big rem, rk, z1, z2;
epoint *KG;
i = SM2_standard_init();
if (i)
return i;
//initiate
dA = mirvar(0);
e = mirvar(0);
k = mirvar(0);
KGx = mirvar(0);
KGy = mirvar(0);
r = mirvar(0);
s = mirvar(0);
rem = mirvar(0);
rk = mirvar(0);
z1 = mirvar(0);
z2 = mirvar(0);
bytes_to_big(SM2_NUMWORD, d, dA); //cinstr(dA, d);
KG = epoint_init();
//step1, set M = ZA || M
M = (char *)malloc(sizeof(char)*(M_len + 1));
memcpy(M, ZA, SM3_len / 8);
memcpy(M + SM3_len / 8, message, len);
//step2, generate e = H(M)
SM3_256(M, M_len, hash);
bytes_to_big(SM3_len / 8, hash, e);
//step3:generate k
bytes_to_big(SM3_len / 8, rand, k);
//step4:calculate kG
ecurve_mult(k, G, KG);
//step5:calculate r
epoint_get(KG, KGx, KGy);
add(e, KGx, r);
divide(r, n, rem);
//judge r = 0 or n + k = n?
add(r, k, rk);
if (Test_Zero(r) | Test_n(rk))
return ERR_GENERATE_R;
//step6:generate s
incr(dA, 1, z1);
xgcd(z1, n, z1, z1, z1);
multiply(r, dA, z2);
divide(z2, n, rem);
subtract(k, z2, z2);
add(z2, n, z2);
multiply(z1, z2, s);
divide(s, n, rem);
//judge s = 0?
if (Test_Zero(s))
return ERR_GENERATE_S ;
big_to_bytes(SM2_NUMWORD, r, R, TRUE);
big_to_bytes(SM2_NUMWORD, s, S, TRUE);
free(M);
return 0;
}
/* SM2 verification algorithm */
int SM2_standard_verify(unsigned char *message, int len, unsigned char ZA[], unsigned char Px[], unsigned char Py[], unsigned char R[], unsigned char S[])
{
unsigned char hash[SM3_len / 8];
int M_len = len + SM3_len / 8;
unsigned char *M = NULL;
int i;
big PAx, PAy, r, s, e, t, rem, x1, y1;
big RR;
epoint *PA, *sG, *tPA;
i = SM2_standard_init();
if (i)
return i;
PAx = mirvar(0);
PAy = mirvar(0);
r = mirvar(0);
s = mirvar(0);
e = mirvar(0);
t = mirvar(0);
x1 = mirvar(0);
y1 = mirvar(0);
rem = mirvar(0);
RR = mirvar(0);
PA = epoint_init();
sG = epoint_init();
tPA = epoint_init();
bytes_to_big(SM2_NUMWORD, Px, PAx);
bytes_to_big(SM2_NUMWORD, Py, PAy);
bytes_to_big(SM2_NUMWORD, R, r);
bytes_to_big(SM2_NUMWORD, S, s);
if (!epoint_set(PAx, PAy, 0, PA)) //initialise public key
{
return ERR_PUBKEY_INIT;
}
//step1: test if r belong to [1, n-1]
if (Test_Range(r))
return ERR_OUTRANGE_R;
//step2: test if s belong to [1, n-1]
if (Test_Range(s))
return ERR_OUTRANGE_S;
//step3, generate M
M = (char *)malloc(sizeof(char)*(M_len + 1));
memcpy(M, ZA, SM3_len / 8);
memcpy(M + SM3_len / 8, message, len);
//step4, generate e = H(M)
SM3_256(M, M_len, hash);
bytes_to_big(SM3_len / 8, hash, e);
//step5:generate t
add(r, s, t);
divide(t, n, rem);
if (Test_Zero(t))
return ERR_GENERATE_T;
//step 6: generate(x1, y1)
ecurve_mult(s, G, sG);
ecurve_mult(t, PA, tPA);
ecurve_add(sG, tPA);
epoint_get(tPA, x1, y1);
//step7:generate RR
add(e, x1, RR);
divide(RR, n, rem);
free(M);
if (compare(RR, r) == 0)
return 0;
else
return ERR_DATA_MEMCMP;
}
/* SM2 self check */
int SM2_standard_selfcheck()
{
//the private key
unsigned char dA[32] = {0x39, 0x45, 0x20, 0x8f, 0x7b, 0x21, 0x44, 0xb1, 0x3f, 0x36, 0xe3, 0x8a, 0xc6, 0xd3, 0x9f,
0x95, 0x88, 0x93, 0x93, 0x69, 0x28, 0x60, 0xb5, 0x1a, 0x42, 0xfb, 0x81, 0xef, 0x4d, 0xf7,
0xc5, 0xb8};
unsigned char rand[32] = {0x59, 0x27, 0x6E, 0x27, 0xD5, 0x06, 0x86, 0x1A, 0x16, 0x68, 0x0F, 0x3A, 0xD9, 0xC0, 0x2D,
0xCC, 0xEF, 0x3C, 0xC1, 0xFA, 0x3C, 0xDB, 0xE4, 0xCE, 0x6D, 0x54, 0xB8, 0x0D, 0xEA, 0xC1,
0xBC, 0x21};
//the public key
/* unsigned char xA[32] = {0x09, 0xf9, 0xdf, 0x31, 0x1e, 0x54, 0x21, 0xa1, 0x50, 0xdd, 0x7d, 0x16, 0x1e, 0x4b, 0xc5,
0xc6, 0x72, 0x17, 0x9f, 0xad, 0x18, 0x33, 0xfc, 0x07, 0x6b, 0xb0, 0x8f, 0xf3, 0x56, 0xf3,
0x50, 0x20};
unsigned char yA[32] = {0xcc, 0xea, 0x49, 0x0c, 0xe2, 0x67, 0x75, 0xa5, 0x2d, 0xc6, 0xea, 0x71, 0x8c, 0xc1, 0xaa,
0x60, 0x0a, 0xed, 0x05, 0xfb, 0xf3, 0x5e, 0x08, 0x4a, 0x66, 0x32, 0xf6, 0x07, 0x2d, 0xa9,
0xad, 0x13};*/
unsigned char xA[32], yA[32];
unsigned char r[32], s[32]; // Signature
unsigned char IDA[16] = {0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x31, 0x32, 0x33,
0x34, 0x35, 0x36, 0x37, 0x38}; //ASCII code of userA's identification
int IDA_len = 16;
unsigned char ENTLA[2] = {0x00, 0x80}; //the length of userA's identification, presentation in ASCII code
unsigned char *message = "message digest"; //the message to be signed
int len = strlen(message); //the length of message
unsigned char ZA[SM3_len / 8]; //ZA = Hash(ENTLA || IDA || a || b || Gx || Gy || xA|| yA)
unsigned char Msg[210]; //210 = IDA_len + 2 + SM2_NUMWORD * 6
int temp;
miracl *mip = mirsys(10000, 16);
mip->IOBASE = 16;
temp = SM2_standard_keygeneration(dA, xA, yA);
if (temp)
return temp;
//ENTLA || IDA || a || b || Gx || Gy || xA || yA
memcpy(Msg, ENTLA, 2);
memcpy(Msg + 2, IDA, IDA_len);
memcpy(Msg + 2 + IDA_len, SM2_a, SM2_NUMWORD);
memcpy(Msg + 2 + IDA_len + SM2_NUMWORD, SM2_b, SM2_NUMWORD);
memcpy(Msg + 2 + IDA_len + SM2_NUMWORD * 2, SM2_Gx, SM2_NUMWORD);
memcpy(Msg + 2 + IDA_len + SM2_NUMWORD * 3, SM2_Gy, SM2_NUMWORD);
memcpy(Msg + 2 + IDA_len + SM2_NUMWORD * 4, xA, SM2_NUMWORD);
memcpy(Msg + 2 + IDA_len + SM2_NUMWORD * 5, yA, SM2_NUMWORD);
SM3_256(Msg, 210, ZA);
temp = SM2_standard_sign(message, len, ZA, rand, dA, r, s);
if (temp)
return temp;
temp = SM2_standard_verify(message, len, ZA, xA, yA, r, s);
if (temp)
return temp;
return 0;
}