rijndael.c

mediastreamer2是开源的网络传输媒体流的库

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 0x0000008C,0x000000A1,0x00000089,0x0000000D,0x000000BF,0x000000E6,0x00000042,0x00000068,
 0x00000041,0x00000099,0x0000002D,0x0000000F,0x000000B0,0x00000054,0x000000BB,0x00000016 
 },
 {
 0x00006300,0x00007C00,0x00007700,0x00007B00,0x0000F200,0x00006B00,0x00006F00,0x0000C500,
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 0x00005200,0x00003B00,0x0000D600,0x0000B300,0x00002900,0x0000E300,0x00002F00,0x00008400,
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 0x00009B00,0x00001E00,0x00008700,0x0000E900,0x0000CE00,0x00005500,0x00002800,0x0000DF00,
 0x00008C00,0x0000A100,0x00008900,0x00000D00,0x0000BF00,0x0000E600,0x00004200,0x00006800,
 0x00004100,0x00009900,0x00002D00,0x00000F00,0x0000B000,0x00005400,0x0000BB00,0x00001600 
 },
 {
 0x00630000,0x007C0000,0x00770000,0x007B0000,0x00F20000,0x006B0000,0x006F0000,0x00C50000,
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 0x00CA0000,0x00820000,0x00C90000,0x007D0000,0x00FA0000,0x00590000,0x00470000,0x00F00000,
 0x00AD0000,0x00D40000,0x00A20000,0x00AF0000,0x009C0000,0x00A40000,0x00720000,0x00C00000,
 0x00B70000,0x00FD0000,0x00930000,0x00260000,0x00360000,0x003F0000,0x00F70000,0x00CC0000,
 0x00340000,0x00A50000,0x00E50000,0x00F10000,0x00710000,0x00D80000,0x00310000,0x00150000,
 0x00040000,0x00C70000,0x00230000,0x00C30000,0x00180000,0x00960000,0x00050000,0x009A0000,
 0x00070000,0x00120000,0x00800000,0x00E20000,0x00EB0000,0x00270000,0x00B20000,0x00750000,
 0x00090000,0x00830000,0x002C0000,0x001A0000,0x001B0000,0x006E0000,0x005A0000,0x00A00000,
 0x00520000,0x003B0000,0x00D60000,0x00B30000,0x00290000,0x00E30000,0x002F0000,0x00840000,
 0x00530000,0x00D10000,0000000000,0x00ED0000,0x00200000,0x00FC0000,0x00B10000,0x005B0000,
 0x006A0000,0x00CB0000,0x00BE0000,0x00390000,0x004A0000,0x004C0000,0x00580000,0x00CF0000,
 0x00D00000,0x00EF0000,0x00AA0000,0x00FB0000,0x00430000,0x004D0000,0x00330000,0x00850000,
 0x00450000,0x00F90000,0x00020000,0x007F0000,0x00500000,0x003C0000,0x009F0000,0x00A80000,
 0x00510000,0x00A30000,0x00400000,0x008F0000,0x00920000,0x009D0000,0x00380000,0x00F50000,
 0x00BC0000,0x00B60000,0x00DA0000,0x00210000,0x00100000,0x00FF0000,0x00F30000,0x00D20000,
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 0x00E00000,0x00320000,0x003A0000,0x000A0000,0x00490000,0x00060000,0x00240000,0x005C0000,
 0x00C20000,0x00D30000,0x00AC0000,0x00620000,0x00910000,0x00950000,0x00E40000,0x00790000,
 0x00E70000,0x00C80000,0x00370000,0x006D0000,0x008D0000,0x00D50000,0x004E0000,0x00A90000,
 0x006C0000,0x00560000,0x00F40000,0x00EA0000,0x00650000,0x007A0000,0x00AE0000,0x00080000,
 0x00BA0000,0x00780000,0x00250000,0x002E0000,0x001C0000,0x00A60000,0x00B40000,0x00C60000,
 0x00E80000,0x00DD0000,0x00740000,0x001F0000,0x004B0000,0x00BD0000,0x008B0000,0x008A0000,
 0x00700000,0x003E0000,0x00B50000,0x00660000,0x00480000,0x00030000,0x00F60000,0x000E0000,
 0x00610000,0x00350000,0x00570000,0x00B90000,0x00860000,0x00C10000,0x001D0000,0x009E0000,
 0x00E10000,0x00F80000,0x00980000,0x00110000,0x00690000,0x00D90000,0x008E0000,0x00940000,
 0x009B0000,0x001E0000,0x00870000,0x00E90000,0x00CE0000,0x00550000,0x00280000,0x00DF0000,
 0x008C0000,0x00A10000,0x00890000,0x000D0000,0x00BF0000,0x00E60000,0x00420000,0x00680000,
 0x00410000,0x00990000,0x002D0000,0x000F0000,0x00B00000,0x00540000,0x00BB0000,0x00160000 
 },
 {
 0x63000000,0x7C000000,0x77000000,0x7B000000,0xF2000000,0x6B000000,0x6F000000,0xC5000000,
 0x30000000,0x01000000,0x67000000,0x2B000000,0xFE000000,0xD7000000,0xAB000000,0x76000000,
 0xCA000000,0x82000000,0xC9000000,0x7D000000,0xFA000000,0x59000000,0x47000000,0xF0000000,
 0xAD000000,0xD4000000,0xA2000000,0xAF000000,0x9C000000,0xA4000000,0x72000000,0xC0000000,
 0xB7000000,0xFD000000,0x93000000,0x26000000,0x36000000,0x3F000000,0xF7000000,0xCC000000,
 0x34000000,0xA5000000,0xE5000000,0xF1000000,0x71000000,0xD8000000,0x31000000,0x15000000,
 0x04000000,0xC7000000,0x23000000,0xC3000000,0x18000000,0x96000000,0x05000000,0x9A000000,
 0x07000000,0x12000000,0x80000000,0xE2000000,0xEB000000,0x27000000,0xB2000000,0x75000000,
 0x09000000,0x83000000,0x2C000000,0x1A000000,0x1B000000,0x6E000000,0x5A000000,0xA0000000,
 0x52000000,0x3B000000,0xD6000000,0xB3000000,0x29000000,0xE3000000,0x2F000000,0x84000000,
 0x53000000,0xD1000000,0000000000,0xED000000,0x20000000,0xFC000000,0xB1000000,0x5B000000,
 0x6A000000,0xCB000000,0xBE000000,0x39000000,0x4A000000,0x4C000000,0x58000000,0xCF000000,
 0xD0000000,0xEF000000,0xAA000000,0xFB000000,0x43000000,0x4D000000,0x33000000,0x85000000,
 0x45000000,0xF9000000,0x02000000,0x7F000000,0x50000000,0x3C000000,0x9F000000,0xA8000000,
 0x51000000,0xA3000000,0x40000000,0x8F000000,0x92000000,0x9D000000,0x38000000,0xF5000000,
 0xBC000000,0xB6000000,0xDA000000,0x21000000,0x10000000,0xFF000000,0xF3000000,0xD2000000,
 0xCD000000,0x0C000000,0x13000000,0xEC000000,0x5F000000,0x97000000,0x44000000,0x17000000,
 0xC4000000,0xA7000000,0x7E000000,0x3D000000,0x64000000,0x5D000000,0x19000000,0x73000000,
 0x60000000,0x81000000,0x4F000000,0xDC000000,0x22000000,0x2A000000,0x90000000,0x88000000,
 0x46000000,0xEE000000,0xB8000000,0x14000000,0xDE000000,0x5E000000,0x0B000000,0xDB000000,
 0xE0000000,0x32000000,0x3A000000,0x0A000000,0x49000000,0x06000000,0x24000000,0x5C000000,
 0xC2000000,0xD3000000,0xAC000000,0x62000000,0x91000000,0x95000000,0xE4000000,0x79000000,
 0xE7000000,0xC8000000,0x37000000,0x6D000000,0x8D000000,0xD5000000,0x4E000000,0xA9000000,
 0x6C000000,0x56000000,0xF4000000,0xEA000000,0x65000000,0x7A000000,0xAE000000,0x08000000,
 0xBA000000,0x78000000,0x25000000,0x2E000000,0x1C000000,0xA6000000,0xB4000000,0xC6000000,
 0xE8000000,0xDD000000,0x74000000,0x1F000000,0x4B000000,0xBD000000,0x8B000000,0x8A000000,
 0x70000000,0x3E000000,0xB5000000,0x66000000,0x48000000,0x03000000,0xF6000000,0x0E000000,
 0x61000000,0x35000000,0x57000000,0xB9000000,0x86000000,0xC1000000,0x1D000000,0x9E000000,
 0xE1000000,0xF8000000,0x98000000,0x11000000,0x69000000,0xD9000000,0x8E000000,0x94000000,
 0x9B000000,0x1E000000,0x87000000,0xE9000000,0xCE000000,0x55000000,0x28000000,0xDF000000,
 0x8C000000,0xA1000000,0x89000000,0x0D000000,0xBF000000,0xE6000000,0x42000000,0x68000000,
 0x41000000,0x99000000,0x2D000000,0x0F000000,0xB0000000,0x54000000,0xBB000000,0x16000000 
 } 
};

/*----------------- The workspace ------------------------------*/

static u32 Ekey[44];	/* The expanded key */

/*------ The round Function.  4 table lookups and 4 Exors ------*/
#define f_rnd(x, n)                     \
  ( ft_tab[0][byte0(x[n])]              \
  ^ ft_tab[1][byte1(x[(n + 1) & 3])]    \
  ^ ft_tab[2][byte2(x[(n + 2) & 3])]    \
  ^ ft_tab[3][byte3(x[(n + 3) & 3])] )

#define f_round(bo, bi, k)          \
    bo[0] = f_rnd(bi, 0) ^ k[0];    \
    bo[1] = f_rnd(bi, 1) ^ k[1];    \
    bo[2] = f_rnd(bi, 2) ^ k[2];    \
    bo[3] = f_rnd(bi, 3) ^ k[3];    \
    k += 4

/*--- The S Box lookup used in constructing the Key schedule ---*/
#define ls_box(x)       \
 (  fl_tab[0][byte0(x)] \
  ^ fl_tab[1][byte1(x)] \
  ^ fl_tab[2][byte2(x)] \
  ^ fl_tab[3][byte3(x)] )

/*------------ The last round function (no MixColumn) ----------*/
#define lf_rnd(x, n)                    \
  ( fl_tab[0][byte0(x[n])]              \
  ^ fl_tab[1][byte1(x[(n + 1) & 3])]    \
  ^ fl_tab[2][byte2(x[(n + 2) & 3])]    \
  ^ fl_tab[3][byte3(x[(n + 3) & 3])] )


/*-----------------------------------------------------------
 * RijndaelKeySchedule
 *   Initialise the key schedule from a supplied key
 */
void RijndaelKeySchedule(u8 key[16])
{
    u32  t;
    u32  *ek=Ekey,	    /* pointer to the expanded key   */
         *rc=rnd_con;   /* pointer to the round constant */

    Ekey[0] = u32_in(key     );
    Ekey[1] = u32_in(key +  4);
    Ekey[2] = u32_in(key +  8);
    Ekey[3] = u32_in(key + 12);

	while(ek < Ekey + 40)
    {
		t = rot3(ek[3]);
        ek[4] = ek[0] ^ ls_box(t) ^ *rc++;
        ek[5] = ek[1] ^ ek[4];
        ek[6] = ek[2] ^ ek[5];
        ek[7] = ek[3] ^ ek[6];
        ek += 4;
    }
}

/*-----------------------------------------------------------
 * RijndaelEncrypt
 *   Encrypt an input block
 */
void RijndaelEncrypt(u8 in[16], u8 out[16])
{
    u32    b0[4], b1[4], *kp = Ekey;

    b0[0] = u32_in(in     ) ^ *kp++;
    b0[1] = u32_in(in +  4) ^ *kp++;
    b0[2] = u32_in(in +  8) ^ *kp++;
    b0[3] = u32_in(in + 12) ^ *kp++;

    f_round(b1, b0, kp); 
    f_round(b0, b1, kp);
    f_round(b1, b0, kp); 
    f_round(b0, b1, kp);
    f_round(b1, b0, kp); 
    f_round(b0, b1, kp);
    f_round(b1, b0, kp); 
    f_round(b0, b1, kp);
    f_round(b1, b0, kp); 

    u32_out(out,      lf_rnd(b1, 0) ^ kp[0]); 
    u32_out(out +  4, lf_rnd(b1, 1) ^ kp[1]);
    u32_out(out +  8, lf_rnd(b1, 2) ^ kp[2]); 
    u32_out(out + 12, lf_rnd(b1, 3) ^ kp[3]);
}