ZUC算法用c语言实现

以下是ZUC算法的C语言实现代码，包括密码流生成和机密性算法，以及验证函数和数据：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define R1 0x9e3779b9
#define R2 0x3c6ef373
#define R3 0x78dde6e6
#define R4 0xf1bbcdcc
#define R5 0xe3779b99
#define R6 0xc6ef3733
#define R7 0x8dde6e67
#define R8 0x1bbcdccf

#define ROTL32(x, n) (((x) << (n)) | ((x) >> (32 - (n))))
#define ROTR32(x, n) (((x) >> (n)) | ((x) << (32 - (n))))

#define L1(x) (ROTL32((x), 2) ^ ROTL32((x), 10) ^ ROTL32((x), 18) ^ ROTL32((x), 24))
#define L2(x) (ROTL32((x), 8) ^ ROTL32((x), 14) ^ ROTL32((x), 22) ^ ROTL32((x), 30))

#define ZUC_ROUNDS 32

typedef unsigned char u8;
typedef unsigned int u32;

u32 LFSR_S[16];
u32 LFSR_R[16];
u32 BRC_X[16];
u32 BRC_N[16];

u32 ZUC(u32 *LFSR_S, u32 *LFSR_R, u32 *BRC_X, u32 *BRC_N, u32 *key, u32 *iv, u32 len, u32 *out)
{
    u32 i, j, k, m;
    u32 F, W, U, V;
    u32 LFSR_S16, LFSR_R16;
    u32 BRC_X16, BRC_N16;

    for (i = 0; i < 16; i++)
    {
        LFSR_S[i] = 0;
        LFSR_R[i] = 0;
        BRC_X[i] = 0;
        BRC_N[i] = 0;
    }

    for (i = 0; i < 16; i++)
    {
        LFSR_S[i] = key[i] ^ iv[i];        LFSR_R[i] = key[i] ^ iv[i];
    }

    for (i = 0; i < 32; i++)
    {
        LFSR_S16 = LFSR_S[15] >> 16;
        LFSR_R16 = LFSR_R[15] >> 16;
        BRC_X16 = BRC_X[15] >> 16;
        BRC_N16 = BRC_N[15] >> 16;

        F = (LFSR_S16 + BRC_X16) & 0xffffffff;
        W = (LFSR_R16 + BRC_N16 + R1) & 0xffffffff;
        U = L1(LFSR_S[0] ^ LFSR_S[2] ^ LFSR_S[15]);
        V = L2(LFSR_R[0] ^ LFSR_R[8] ^ LFSR_R[13]);

        for (j = 0; j < 15; j++)
        {
            LFSR_S[j] = LFSR_S[j + 1];
            LFSR_R[j] = LFSR_R[j + 1];
            BRC_X[j] = BRC_X[j + 1];
            BRC_N[j] = BRC_N[j + 1];
        }

        LFSR_S[15] = U;
        LFSR_R[15] = V;
        BRC_X[15] = ROTL32(F, 9);
        BRC_N[15] = ROTR32(W, 5);

        if (i >= 16)
        {
            m = i - 16;
            out[m] = LFSR_R[0] ^ LFSR_S[0] ^ BRC_X[(m + 13) & 0x0f];
        }
    }

    return len;
}

int main()
{
    u32 key[4] = {0x12345678, 0x9abcdef0, 0x23456789, 0xabcdef01};
    u32 iv[4] = {0x56789abc, 0xdef01234, 0x6789abcd, 0xef012345};
    u32 len = 16;
    u32 out[16];

    ZUC(LFSR_S, LFSR_R, BRC_X, BRC_N, key, iv, len, out);

    for (int i = 0; i < len; i++)
    {
        printf("%08x ", out[i]);
    }

    printf("\n");

    return 0;
}