文章目录

  • ZUC算法源码介绍

本人就职于国际知名终端厂商，负责modem芯片研发。
在5G早期负责终端数据业务层、核心网相关的开发工作，目前牵头6G算力网络技术标准研究。

博客内容主要围绕：
       5G协议讲解
       算力网络讲解（云计算，边缘计算，端计算）
       高级C语言讲解
       Rust语言讲解

ZUC算法源码介绍

/* ----------------------- */
typedef unsigned char u8;
typedef unsigned int u32;
/* ----------------------- */
/* the state registers of LFSR */
u32 LFSR_S0;
u32 LFSR_S1;
u32 LFSR_S2;
u32 LFSR_S3;
u32 LFSR_S4;
u32 LFSR_S5;
u32 LFSR_S6;
u32 LFSR_S7;
u32 LFSR_S8;
u32 LFSR_S9;
u32 LFSR_S10;
u32 LFSR_S11;
u32 LFSR_S12;
u32 LFSR_S13;
u32 LFSR_S14;
u32 LFSR_S15;/* the registers of F */
u32 F_R1;
u32 F_R2;/* the outputs of BitReorganization */
u32 BRC_X0;
u32 BRC_X1;
u32 BRC_X2;
u32 BRC_X3;/* the s-boxes */
u8 S0[256] = {0x3e,0x72,0x5b,0x47,0xca,0xe0,0x00,0x33,0x04,0xd1,0x54,0x98,0x09,0xb9,0x6d,0xcb, 0x7b,0x1b,0xf9,0x32,0xaf,0x9d,0x6a,0xa5,0xb8,0x2d,0xfc,0x1d,0x08,0x53,0x03,0x90, 0x4d,0x4e,0x84,0x99,0xe4,0xce,0xd9,0x91,0xdd,0xb6,0x85,0x48,0x8b,0x29,0x6e,0xac, 0xcd,0xc1,0xf8,0x1e,0x73,0x43,0x69,0xc6,0xb5,0xbd,0xfd,0x39,0x63,0x20,0xd4,0x38, 0x76,0x7d,0xb2,0xa7,0xcf,0xed,0x57,0xc5,0xf3,0x2c,0xbb,0x14,0x21,0x06,0x55,0x9b, 0xe3,0xef,0x5e,0x31,0x4f,0x7f,0x5a,0xa4,0x0d,0x82,0x51,0x49,0x5f,0xba,0x58,0x1c, 0x4a,0x16,0xd5,0x17,0xa8,0x92,0x24,0x1f,0x8c,0xff,0xd8,0xae,0x2e,0x01,0xd3,0xad, 0x3b,0x4b,0xda,0x46,0xeb,0xc9,0xde,0x9a,0x8f,0x87,0xd7,0x3a,0x80,0x6f,0x2f,0xc8, 0xb1,0xb4,0x37,0xf7,0x0a,0x22,0x13,0x28,0x7c,0xcc,0x3c,0x89,0xc7,0xc3,0x96,0x56, 0x07,0xbf,0x7e,0xf0,0x0b,0x2b,0x97,0x52,0x35,0x41,0x79,0x61,0xa6,0x4c,0x10,0xfe, 0xbc,0x26,0x95,0x88,0x8a,0xb0,0xa3,0xfb,0xc0,0x18,0x94,0xf2,0xe1,0xe5,0xe9,0x5d, 0xd0,0xdc,0x11,0x66,0x64,0x5c,0xec,0x59,0x42,0x75,0x12,0xf5,0x74,0x9c,0xaa,0x23, 0x0e,0x86,0xab,0xbe,0x2a,0x02,0xe7,0x67,0xe6,0x44,0xa2,0x6c,0xc2,0x93,0x9f,0xf1, 0xf6,0xfa,0x36,0xd2,0x50,0x68,0x9e,0x62,0x71,0x15,0x3d,0xd6,0x40,0xc4,0xe2,0x0f, 0x8e,0x83,0x77,0x6b,0x25,0x05,0x3f,0x0c,0x30,0xea,0x70,0xb7,0xa1,0xe8,0xa9,0x65, 0x8d,0x27,0x1a,0xdb,0x81,0xb3,0xa0,0xf4,0x45,0x7a,0x19,0xdf,0xee,0x78,0x34,0x60
}; u8 S1[256] =  {0x55,0xc2,0x63,0x71,0x3b,0xc8,0x47,0x86,0x9f,0x3c,0xda,0x5b,0x29,0xaa,0xfd,0x77, 0x8c,0xc5,0x94,0x0c,0xa6,0x1a,0x13,0x00,0xe3,0xa8,0x16,0x72,0x40,0xf9,0xf8,0x42,0x44,0x26,0x68,0x96,0x81,0xd9,0x45,0x3e,0x10,0x76,0xc6,0xa7,0x8b,0x39,0x43,0xe1,0x3a,0xb5,0x56,0x2a,0xc0,0x6d,0xb3,0x05,0x22,0x66,0xbf,0xdc,0x0b,0xfa,0x62,0x48, 0xdd,0x20,0x11,0x06,0x36,0xc9,0xc1,0xcf,0xf6,0x27,0x52,0xbb,0x69,0xf5,0xd4,0x87, 0x7f,0x84,0x4c,0xd2,0x9c,0x57,0xa4,0xbc,0x4f,0x9a,0xdf,0xfe,0xd6,0x8d,0x7a,0xeb, 0x2b,0x53,0xd8,0x5c,0xa1,0x14,0x17,0xfb,0x23,0xd5,0x7d,0x30,0x67,0x73,0x08,0x09, 0xee,0xb7,0x70,0x3f,0x61,0xb2,0x19,0x8e,0x4e,0xe5,0x4b,0x93,0x8f,0x5d,0xdb,0xa9, 0xad,0xf1,0xae,0x2e,0xcb,0x0d,0xfc,0xf4,0x2d,0x46,0x6e,0x1d,0x97,0xe8,0xd1,0xe9, 0x4d,0x37,0xa5,0x75,0x5e,0x83,0x9e,0xab,0x82,0x9d,0xb9,0x1c,0xe0,0xcd,0x49,0x89, 0x01,0xb6,0xbd,0x58,0x24,0xa2,0x5f,0x38,0x78,0x99,0x15,0x90,0x50,0xb8,0x95,0xe4, 0xd0,0x91,0xc7,0xce,0xed,0x0f,0xb4,0x6f,0xa0,0xcc,0xf0,0x02,0x4a,0x79,0xc3,0xde, 0xa3,0xef,0xea,0x51,0xe6,0x6b,0x18,0xec,0x1b,0x2c,0x80,0xf7,0x74,0xe7,0xff,0x21, 0x5a,0x6a,0x54,0x1e,0x41,0x31,0x92,0x35,0xc4,0x33,0x07,0x0a,0xba,0x7e,0x0e,0x34, 0x88,0xb1,0x98,0x7c,0xf3,0x3d,0x60,0x6c,0x7b,0xca,0xd3,0x1f,0x32,0x65,0x04,0x28, 0x64,0xbe,0x85,0x9b,0x2f,0x59,0x8a,0xd7,0xb0,0x25,0xac,0xaf,0x12,0x03,0xe2,0xf2
};/* the constants D */
u32 EK_d[16] = {0x44D7, 0x26BC, 0x626B, 0x135E, 0x5789, 0x35E2, 0x7135, 0x09AF,0x4D78, 0x2F13, 0x6BC4, 0x1AF1, 0x5E26, 0x3C4D, 0x789A, 0x47AC
};/* ----------------------- */
/* c = a + b mod 2^31 - 1 */
u32 AddM(u32 a, u32 b)
{u32 c = a + b;if (c & 0x80000000){c = (c & 0x7FFFFFFF) + 1;}return c;
}/* LFSR with initialization mode */
#define MulByPow2(x, k) ((((x) << k) | ((x) >> (31 - k))) & 0x7FFFFFFF)
void LFSRWithInitialisationMode(u32 u)
{u32 f, v;f = LFSR_S0;v = MulByPow2(LFSR_S0, 8);f = AddM(f, v);v = MulByPow2(LFSR_S4, 20);f = AddM(f, v);v = MulByPow2(LFSR_S10, 21);f = AddM(f, v);v = MulByPow2(LFSR_S13, 17);f = AddM(f, v);v = MulByPow2(LFSR_S15, 15);f = AddM(f, v);/* update the state */LFSR_S0 = LFSR_S1;LFSR_S1 = LFSR_S2;LFSR_S2 = LFSR_S3;LFSR_S3 = LFSR_S4;LFSR_S4 = LFSR_S5;LFSR_S5 = LFSR_S6;LFSR_S6 = LFSR_S7;LFSR_S7 = LFSR_S8;LFSR_S8 = LFSR_S9;LFSR_S9 = LFSR_S10;LFSR_S10 = LFSR_S11;LFSR_S11 = LFSR_S12;LFSR_S12 = LFSR_S13;LFSR_S13 = LFSR_S14;LFSR_S14 = LFSR_S15;LFSR_S15 = u ^ f;/* adjust LFSR_S15 if LFSR_S15 is zero */if (LFSR_S15 == 0){LFSR_S15 = 0x7FFFFFFF;}
}
/* LFSR with work mode */
void LFSRWithWorkMode()
{u32 f, v;f = LFSR_S0;v = MulByPow2(LFSR_S0, 8);f = AddM(f, v);v = MulByPow2(LFSR_S4, 20);f = AddM(f, v);v = MulByPow2(LFSR_S10, 21);f = AddM(f, v);v = MulByPow2(LFSR_S13, 17);f = AddM(f, v);v = MulByPow2(LFSR_S15, 15);f = AddM(f, v);/* update the state */LFSR_S0 = LFSR_S1;LFSR_S1 = LFSR_S2;LFSR_S2 = LFSR_S3;LFSR_S3 = LFSR_S4;LFSR_S4 = LFSR_S5;LFSR_S5 = LFSR_S6;LFSR_S6 = LFSR_S7;LFSR_S7 = LFSR_S8;LFSR_S8 = LFSR_S9;LFSR_S9 = LFSR_S10;LFSR_S10 = LFSR_S11;LFSR_S11 = LFSR_S12;LFSR_S12 = LFSR_S13;LFSR_S13 = LFSR_S14;LFSR_S14 = LFSR_S15;LFSR_S15 = f;
}/* BitReorganization */
void BitReorganization()
{BRC_X0 = ((LFSR_S15 & 0x7FFF8000) << 1) | (LFSR_S14 & 0xFFFF);BRC_X1 = ((LFSR_S11 & 0xFFFF) << 16) | (LFSR_S9 >> 15);BRC_X2 = ((LFSR_S7 & 0xFFFF) << 16) | (LFSR_S5 >> 15);BRC_X3 = ((LFSR_S2 & 0xFFFF) << 16) | (LFSR_S0 >> 15);
}#define ROT(a, k) (((a) << k) | ((a) >> (32 - k)))/* L1 */
u32 L1(u32 X)
{return (X ^ ROT(X, 2) ^ ROT(X, 10) ^ ROT(X, 18) ^ ROT(X, 24));
}/* L2 */
u32 L2(u32 X)
{return (X ^ ROT(X, 8) ^ ROT(X, 14) ^ ROT(X, 22) ^ ROT(X, 30));
}#define MAKEU32(a, b, c, d) (((u32)(a) << 24) | ((u32)(b) << 16) | ((u32)(c) << 8) | ((u32)(d)))
/* F */
u32 F()
{u32 W, W1, W2, u, v;W = (BRC_X0 ^ F_R1) + F_R2;W1 = F_R1 + BRC_X1;W2 = F_R2 ^ BRC_X2;u = L1((W1 << 16) | (W2 >> 16));v = L2((W2 << 16) | (W1 >> 16));F_R1 = MAKEU32(S0[u >> 24], S1[(u >> 16) & 0xFF], S0[(u >> 8) & 0xFF], S1[u & 0xFF]);F_R2 = MAKEU32(S0[v >> 24], S1[(v >> 16) & 0xFF], S0[(v >> 8) & 0xFF], S1[v & 0xFF]);return W;
}#define MAKEU31(a, b, c) (((u32)(a) << 23) | ((u32)(b) << 8) | (u32)(c))/* initialize */
void Initialization(u8* k, u8* iv)
{u32 u, nCount;/* expand key */LFSR_S0 = MAKEU31(k[0], EK_d[0], iv[0]);LFSR_S1 = MAKEU31(k[1], EK_d[1], iv[1]);LFSR_S2 = MAKEU31(k[2], EK_d[2], iv[2]);LFSR_S3 = MAKEU31(k[3], EK_d[3], iv[3]);LFSR_S4 = MAKEU31(k[4], EK_d[4], iv[4]);LFSR_S5 = MAKEU31(k[5], EK_d[5], iv[5]);LFSR_S6 = MAKEU31(k[6], EK_d[6], iv[6]);LFSR_S7 = MAKEU31(k[7], EK_d[7], iv[7]);LFSR_S8 = MAKEU31(k[8], EK_d[8], iv[8]);LFSR_S9 = MAKEU31(k[9], EK_d[9], iv[9]);LFSR_S10 = MAKEU31(k[10], EK_d[10], iv[10]);LFSR_S11 = MAKEU31(k[11], EK_d[11], iv[11]);LFSR_S12 = MAKEU31(k[12], EK_d[12], iv[12]);LFSR_S13 = MAKEU31(k[13], EK_d[13], iv[13]);LFSR_S14 = MAKEU31(k[14], EK_d[14], iv[14]);LFSR_S15 = MAKEU31(k[15], EK_d[15], iv[15]);/* set F_R1 and F_R2 to zero */F_R1 = 0;F_R2 = 0;nCount = 32;while (nCount > 0){BitReorganization();u = F() ^ BRC_X3;LFSRWithInitialisationMode(u >> 1);nCount --;}
}void GenerateKeystream(u32* pKeystream, int KeystreamLen)
{int i;{BitReorganization();F();            /* discard the output of F */LFSRWithWorkMode();}for (i = 0; i < KeystreamLen; i ++){BitReorganization();pKeystream[i] = F() ^ BRC_X3;LFSRWithWorkMode();}
}

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《ZUC算法源码介绍》

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