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第二次实验

时间：2023-10-20 12:34:03浏览次数：34  
标签：int unsigned len char 实验 long str 第二次

SM3代码

include <stdio.h>

include <stdlib.h>

include <string.h>

define SHL(x,n) (x<<n)

define SHR(x,n) (x>>n)

define ROTL(x,n) ((x<<n)|(x>>(32-n)))

define ROTR(x,n) ((x>>n)|(x<<(32-n)))

define P1(a,b,c,d,e) (P2((a)(b)ROTL((c),15))ROTL((d),7)e)

define P2(a) ((a)ROTL((a),15)ROTL((a),23))

define P3(a,b) ((a)^(b))

define P4(a) ((a)ROTL((a),9)ROTL((a),17))

define T1 (0x79cc4519)

define T2 (0x7a879d8a)

define FF1(a,b,c) ((a)(b)(c))

define FF2(a,b,c) (((a)&(b))|((a)&(c))|((b)&(c)))

define GG1(a,b,c) ((a)(b)(c))

define GG2(a,b,c) (((a)&(b))|((~a)&(c)))

define SS1(a,b,c,d) (ROTL((ROTL((a),12)+b+ROTL((c),(d))),7))

define SS2(a,b,c,d) (SS1((a),(b),(c),(d))^ROTL((a),12))

define TT1(e,f,g,a,b,c,d) ((e)+(f)+SS2(a,b,c,d)+(g))

define TT2(e,f,g,a,b,c,d) ((e)+(f)+SS1(a,b,c,d)+(g))

unsigned long H[8] = {0x20211310, 0x20000819, 0x20001204, 0xda8a0600, 0xa96f30bc, 0x163138aa, 0xe38dee4d, 0xb0fb0e4e};

int print_str(unsigned char *str, int len)
{
int i = 0;

printf("str=[");

for(i=0; i<len; i++)
{
    printf("%02X", str[i]);
}

printf("], len=[%d]\n", len);

return 0;

}

int sm3_long_to_str(unsigned long a, unsigned char *b)
{
unsigned long x = a;
unsigned char *d = (unsigned char *)&x;

b[0] = d[3];
b[1] = d[2];
b[2] = d[1];
b[3] = d[0];

return 0;

}

unsigned long sm3_str_to_long(unsigned char *a)
{
unsigned long x = 0;
unsigned char *b = (unsigned char *)&x;

b[0] = a[3];
b[1] = a[2];
b[2] = a[1];
b[3] = a[0];

return x;

}

int sm3_pad_message(unsigned char *str, int len)
{
unsigned long high, low;
int u = len % 64;

high = 0;
low = len * 8;

if(u < 56)
{
    str[len++] = 0x80;
    u++;

    while(u < 56)
    {
        str[len++] = 0x00;
        u++;
    }
}
else if(u > 56)
{
    str[len++] = 0x80;
    u++;

    while(u < 56+64)
    {
        str[len++] = 0x00;
        u++;
    }
}

//printf("len=[%08x]\n", low);

str[len++] = high >> 24;
str[len++] = high >> 16;
str[len++] = high >> 8;
str[len++] = high;
str[len++] = low >> 24;
str[len++] = low >> 16;
str[len++] = low >> 8;
str[len++] = low;

return len;

}

int sm3_group_a(unsigned char *a, unsigned char *b, unsigned char *c, unsigned char *d, unsigned char *e, unsigned char *f)
{
unsigned long x[6] = {0};

x[0] = sm3_str_to_long(a);
x[1] = sm3_str_to_long(b);
x[2] = sm3_str_to_long(c);
x[3] = sm3_str_to_long(d);
x[4] = sm3_str_to_long(e);
x[5] = P1(x[0],x[1],x[2],x[3],x[4]);

sm3_long_to_str(x[5], f);

return 0;

}

int sm3_group_b(unsigned char *a, unsigned char *b, unsigned char *c)
{
unsigned long x[3] = {0};

x[0] = sm3_str_to_long(a);
x[1] = sm3_str_to_long(b);
x[2] = P3(x[0],x[1]);

sm3_long_to_str(x[2], c);

return 0;

}

int sm3_str_group(unsigned char *str, int len)
{
unsigned char M[64];
unsigned char W[68][4];
int u = len / 64;
int v = 64 / 16 * 64 * 2;
int i = 0;
int j = 0;

for(i=u-1; i>=0; i--)
{
    memset(M, 0x00, sizeof(M));

    memcpy(M, str+i*64, 64);

    for(j=0; j<16; j++)
    {
        memcpy(W[j], M+4*j, 4);
    }

    for(j=16; j<68; j++)
    {
        sm3_group_a(W[j-16], W[j-9], W[j-3], W[j-13], W[j-6], W[j]);
    }

    memset(M, 0x00, sizeof(M));

    for(j=0; j<64; j++)
    {
        sm3_group_b(W[j], W[j+4], M);
        memcpy(str+i*v+8*j, W[j], 4);
        memcpy(str+i*v+8*j+4, M, 4);
    }
}

return u*v;

}

int sm3_str_summ(unsigned char *str, unsigned char *summ, int len)
{
unsigned char W[128][4];
unsigned long A[8] = {0};
unsigned long B[8] = {0};
unsigned long C[8] = {0};
int u = len / 512;
int i = 0;
int j = 0;

memcpy(B, H, sizeof(B));

for(i=0; i<u; i++)
{
    for(j=0; j<128; j++)
    {
        memcpy(W[j], str+i*512+j*4, 4);
    }

    A[0] = B[0];
    A[1] = B[1];
    A[2] = B[2];
    A[3] = B[3];
    A[4] = B[4];
    A[5] = B[5];
    A[6] = B[6];
    A[7] = B[7];

    for(j=0; j<16; j++)
    {
        C[0] = sm3_str_to_long(W[2*j+1]);
        C[1] = sm3_str_to_long(W[2*j]);
        C[2] = TT1(FF1(A[0],A[1],A[2]),A[3],C[0],A[0],A[4],T1,j);
        C[3] = TT2(GG1(A[4],A[5],A[6]),A[7],C[1],A[0],A[4],T1,j);
        A[7] = A[6];
        A[6] = ROTL(A[5],19);
        A[5] = A[4];
        A[4] = P4(C[3]);
        A[3] = A[2];
        A[2] = ROTL(A[1],9);
        A[1] = A[0];
        A[0] = C[2];
    }

    for(j=16; j<64; j++)
    {
        C[0] = sm3_str_to_long(W[2*j+1]);
        C[1] = sm3_str_to_long(W[2*j]);
        C[2] = TT1(FF2(A[0],A[1],A[2]),A[3],C[0],A[0],A[4],T2,j);
        C[3] = TT2(GG2(A[4],A[5],A[6]),A[7],C[1],A[0],A[4],T2,j);
        A[7] = A[6];
        A[6] = ROTL(A[5],19);
        A[5] = A[4];
        A[4] = P4(C[3]);
        A[3] = A[2];
        A[2] = ROTL(A[1],9);
        A[1] = A[0];
        A[0] = C[2];

        //printf("A[0]=[%08X]\n", A[0]);
    }

    B[0] ^= A[0];
    B[1] ^= A[1];
    B[2] ^= A[2];
    B[3] ^= A[3];
    B[4] ^= A[4];
    B[5] ^= A[5];
    B[6] ^= A[6];
    B[7] ^= A[7];
}

sm3_long_to_str(B[0], summ);
sm3_long_to_str(B[1], summ+4);
sm3_long_to_str(B[2], summ+8);
sm3_long_to_str(B[3], summ+12);
sm3_long_to_str(B[4], summ+16);
sm3_long_to_str(B[5], summ+20);
sm3_long_to_str(B[6], summ+24);
sm3_long_to_str(B[7], summ+28);

return 0;

}

int main()
{
unsigned char str[6488] = {0};
unsigned char str_sm3[32];
int len = 5;
int i = 0;

/*for(i=0; i<16; i++)
{
    str[4*i+0] = 0x61;
    str[4*i+1] = 0x62;
    str[4*i+2] = 0x63;
    str[4*i+3] = 0x64;
}*/

str[0] = 0x33;
str[1] = 0x66;
str[2] = 0x77;
str[3] = 0x99;

len = sm3_pad_message(str, len);

//print_str(str, len);

len = sm3_str_group(str, len);

//print_str(str, len);

sm3_str_summ(str, str_sm3, len);

//print_str(str, len);

print_str(str_sm3, 32);

return 0;

}
SM4代码
/** 文件名: https://github.com/liuqun/openssl-sm4-demo/blob/cmake/src/main.c */

include <stddef.h>

include <stdio.h>

include <stdlib.h>

include <string.h>

include "openssl/err.h"

include "openssl/evp.h"

/* Before OpenSSL 1.1.1-pre1, we did not have EVP_sm4_ecb() */

if defined(OPENSSL_VERSION_NUMBER) \

&& OPENSSL_VERSION_NUMBER < 0x10101001L

static const EVP_CIPHER (EVP_sm4_ecb)()=EVP_aes_128_ecb;

endif

typedef struct {
const unsigned char *in_data;
size_t in_data_len;
int in_data_is_already_padded;
const unsigned char *in_ivec;
const unsigned char *in_key;
size_t in_key_len;
} test_case_t;

void test_encrypt_with_cipher(const test_case_t *in, const EVP_CIPHER *cipher)
{
unsigned char *out_buf = NULL;
int out_len;
int out_padding_len;
EVP_CIPHER_CTX *ctx;

ctx = EVP_CIPHER_CTX_new();
EVP_EncryptInit_ex(ctx, cipher, NULL, in->in_key, in->in_ivec);

if (in->in_data_is_already_padded)
{
    /* Check whether the input data is already padded.
    And its length must be an integral multiple of the cipher's block size. */
    const size_t bs = EVP_CIPHER_block_size(cipher);
    if (in->in_data_len % bs != 0)
    {
        printf("ERROR-1: data length=%d which is not added yet; block size=%d\n", (int) in->in_data_len, (int) bs);
        /* Warning: Remember to do some clean-ups */
        EVP_CIPHER_CTX_free(ctx);
        return;
    }
    /* Disable the implicit PKCS#7 padding defined in EVP_CIPHER */
    EVP_CIPHER_CTX_set_padding(ctx, 0);
}
out_buf = (unsigned char *) malloc(((in->in_data_len>>4)+1) << 4);
out_len = 0;
EVP_EncryptUpdate(ctx, out_buf, &out_len, in->in_data, in->in_data_len);
if (1)
{
    printf("Debug: out_len=%d\n", out_len);
}
out_padding_len = 0;
EVP_EncryptFinal_ex(ctx, out_buf+out_len, &out_padding_len);
if (1)
{
    printf("Debug: out_padding_len=%d\n", out_padding_len);
}
EVP_CIPHER_CTX_free(ctx);
if (1)
{
    int i;
    int len;
    len = out_len + out_padding_len;
    for (i=0; i<len; i++)
    {
        printf("%02x ", out_buf[i]);
    }
    printf("\n");
}
if (out_buf)
{
    free(out_buf);
    out_buf = NULL;
}

}
void main()
{
int have_sm4 = (OPENSSL_VERSION_NUMBER >= 0x10101001L);
int have_aes = 1;
const unsigned char data[]=
{
0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10,
};
unsigned char ivec[EVP_MAX_IV_LENGTH]; ///< IV 向量
const unsigned char key1[16] = ///< key_data, 密钥内容, 至少16字节
{
0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10,
};
test_case_t tc;
tc.in_data = data;
tc.in_data_len = sizeof(data);
tc.in_data_is_already_padded = (tc.in_data_len % 16)==0; // Hard coded 16 as the cipher's block size
tc.in_key = key1;
tc.in_key_len = sizeof(key1);
memset(ivec, 0x00, EVP_MAX_IV_LENGTH);
tc.in_ivec = ivec;

if defined(OPENSSL_NO_SM4)

have_sm4 = 0;

endif

if (have_sm4)
{
    printf("[1]\n");
    printf("Debug: EVP_sm4_ecb() test\n");
    test_encrypt_with_cipher(&tc, EVP_sm4_ecb());
}

if defined(OPENSSL_NO_AES)

have_aes = 0;

endif

if (have_aes)
{
    printf("[2]\n");
    printf("Debug: EVP_aes_128_ecb() test\n");
    test_encrypt_with_cipher(&tc, EVP_aes_128_ecb());
}

}

标签：int,unsigned,len,char,实验,long,str,第二次
From： https://www.cnblogs.com/heweiye/p/17776802.html

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