5G/4GZUC算法源码介绍
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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。
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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以上是关于5G/4GZUC算法源码介绍的主要内容，如果未能解决你的问题，请参考以下文章
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