MegaApi.Sjcl.Cipher.Aes.Aes C# (CSharp) Метод

Aes() статический приватный метод

static private Aes ( ) : System
Результат System
                static Aes()
                {
                    var encTable = _tables[0];
                    var decTable = _tables[1];
                    var sbox = encTable[4];
                    var sboxInv = decTable[4];
                    uint x, xInv;
                    uint[] d = new uint[256];
                    uint[] th = new uint[256];
                    uint x2, x4, x8, s;
                    uint tEnc, tDec;

                    // Compute double and third tables
                    for (uint i = 0; i < 256; i++)
                    {
                        d[i] = i << 1 ^ (i >> 7) * 283;
                        th[d[i] ^ i] = i;
                    }

                    for (x = xInv = 0; sbox[x] == 0; x ^= (x2 != 0 ? x2 : 1), xInv = (th[xInv] != 0 ? th[xInv] : 1))
                    {
                        // Compute sbox
                        s = xInv ^ xInv << 1 ^ xInv << 2 ^ xInv << 3 ^ xInv << 4;
                        s = s >> 8 ^ s & 255 ^ 99;
                        sbox[x] = s;
                        sboxInv[s] = x;

                        // Compute MixColumns
                        x8 = d[x4 = d[x2 = d[x]]];
                        tDec = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100;
                        tEnc = d[s] * 0x101 ^ s * 0x1010100;

                        for (int i = 0; i < 4; i++)
                        {
                            encTable[i][x] = tEnc = tEnc << 24 ^ tEnc >> 8;
                            decTable[i][s] = tDec = tDec << 24 ^ tDec >> 8;
                        }
                    }

                    //// Compactify.  Considerable speedup on Firefox.
                    //for (int i = 0; i < 5; i++) {
                    //    encTable[i] = encTable[i].slice(0);
                    //    decTable[i] = decTable[i].slice(0);
                    //}
                }

Same methods

Sjcl.Cipher.Aes::Aes ( uint key ) : System