src/main/java/com/aliyun/oss/common/utils/CRC64.java [227:245]:
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        int n;
        long row;
        long[] even = new long[GF2_DIM]; // even-power-of-two zeros operator
        long[] odd = new long[GF2_DIM]; // odd-power-of-two zeros operator

        // put operator for one zero bit in odd
        odd[0] = POLY; // CRC-64 polynomial

        row = 1;
        for (n = 1; n < GF2_DIM; n++) {
            odd[n] = row;
            row <<= 1;
        }

        // put operator for two zero bits in even
        gf2MatrixSquare(even, odd);

        // put operator for four zero bits in odd
        gf2MatrixSquare(odd, even);
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src/main/java/com/aliyun/oss/common/utils/CRC64.java [293:311]:
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        int n;
        long row;
        long[] even = new long[GF2_DIM]; // even-power-of-two zeros operator
        long[] odd = new long[GF2_DIM]; // odd-power-of-two zeros operator

        // put operator for one zero bit in odd
        odd[0] = POLY; // CRC-64 polynomial

        row = 1;
        for (n = 1; n < GF2_DIM; n++) {
            odd[n] = row;
            row <<= 1;
        }

        // put operator for two zero bits in even
        gf2MatrixSquare(even, odd);

        // put operator for four zero bits in odd
        gf2MatrixSquare(odd, even);
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