ROM_CURVE_FP256BN = function()

in src/rom_curve.js [495:576]
69 lines of code
1 McCabe index (conditional complexity)

ROM_CURVE_FP256BN = function() {
    /* Fixed Data in ROM - Field and Curve parameters */

    var ROM_CURVE_FP256BN = {

        // FP256BN Curve
        // Base Bits= 24

        Curve_Cof_I : 1,
        CURVE_A: 0,
        CURVE_B_I: 3,
        CURVE_B: [0x3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0],
        CURVE_Order: [0xB500D, 0x536CD1, 0x1AF62D, 0x129992, 0xDC65FB, 0xA49E0C, 0x5EEE71, 0x46E5F2, 0xFCF0CD, 0xFFFFFF, 0xFFFF],
        CURVE_Gx: [0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0],
        CURVE_Gy: [0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0],

        CURVE_Bnx: [0xB0A801, 0xF5C030, 0x6882, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0],
        CURVE_Cof: [0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0],
        CURVE_Cru: [0xA1B807, 0xA24A3, 0x1EDB1C, 0xF1932D, 0xCDD79D, 0x18659B, 0x409210, 0x3988E1, 0x1, 0x0, 0x0],
        CURVE_Pxa: [0xC09EFB, 0x16B689, 0x3CD226, 0x12BF84, 0x1C539A, 0x913ACE, 0x577C28, 0x28560F, 0xC96C20, 0x3350B4, 0xFE0C],
        CURVE_Pxb: [0x7E6A2B, 0xED34A3, 0x89D269, 0x87D035, 0xDD78E2, 0x13B924, 0xC637D8, 0xDB5AE1, 0x8AC054, 0x605773, 0x4EA6],
        CURVE_Pya: [0xDC27FF, 0xB481BE, 0x48E909, 0x8D6158, 0xCB2475, 0x3E51EF, 0x75124E, 0x76770D, 0x42A3B3, 0x46E7C5, 0x7020],
        CURVE_Pyb: [0xAD049B, 0x81114A, 0xB3E012, 0x821A98, 0x4CBE80, 0xB29F8B, 0x49297E, 0x42EEA6, 0x88C290, 0xE3BCD3, 0x554],

        CURVE_W: [
            [0x54003, 0x36E1B, 0x663AF0, 0xFFFE78, 0xFFFFFF, 0xFF, 0x0, 0x0, 0x0, 0x0, 0x0],
            [0x615001, 0xEB8061, 0xD105, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]
        ],
        CURVE_SB: [
            [
                [0x669004, 0xEEEE7C, 0x670BF5, 0xFFFE78, 0xFFFFFF, 0xFF, 0x0, 0x0, 0x0, 0x0, 0x0],
                [0x615001, 0xEB8061, 0xD105, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]
            ],
            [
                [0x615001, 0xEB8061, 0xD105, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0],
                [0x6100A, 0x4FFEB6, 0xB4BB3D, 0x129B19, 0xDC65FB, 0xA49D0C, 0x5EEE71, 0x46E5F2, 0xFCF0CD, 0xFFFFFF, 0xFFFF]
            ]
        ],
        CURVE_WB: [
            [0x30A800, 0x678F0D, 0xCC1020, 0x5554D2, 0x555555, 0x55, 0x0, 0x0, 0x0, 0x0, 0x0],
            [0x7DC805, 0x764C0D, 0xAD1AD6, 0xA10BC3, 0xDE8FBE, 0x104467, 0x806160, 0xD105EB, 0x0, 0x0, 0x0],
            [0x173803, 0xB6061F, 0xD6C1AC, 0x5085E1, 0xEF47DF, 0x82233, 0xC030B0, 0x6882F5, 0x0, 0x0, 0x0],
            [0x91F801, 0x530F6E, 0xCCE126, 0x5554D2, 0x555555, 0x55, 0x0, 0x0, 0x0, 0x0, 0x0]
        ],
        CURVE_BB: [
            [
                [0x5AA80D, 0x5DACA0, 0x1A8DAA, 0x129992, 0xDC65FB, 0xA49E0C, 0x5EEE71, 0x46E5F2, 0xFCF0CD, 0xFFFFFF, 0xFFFF],
                [0x5AA80C, 0x5DACA0, 0x1A8DAA, 0x129992, 0xDC65FB, 0xA49E0C, 0x5EEE71, 0x46E5F2, 0xFCF0CD, 0xFFFFFF, 0xFFFF],
                [0x5AA80C, 0x5DACA0, 0x1A8DAA, 0x129992, 0xDC65FB, 0xA49E0C, 0x5EEE71, 0x46E5F2, 0xFCF0CD, 0xFFFFFF, 0xFFFF],
                [0x615002, 0xEB8061, 0xD105, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]
            ],
            [
                [0x615001, 0xEB8061, 0xD105, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0],
                [0x5AA80C, 0x5DACA0, 0x1A8DAA, 0x129992, 0xDC65FB, 0xA49E0C, 0x5EEE71, 0x46E5F2, 0xFCF0CD, 0xFFFFFF, 0xFFFF],
                [0x5AA80D, 0x5DACA0, 0x1A8DAA, 0x129992, 0xDC65FB, 0xA49E0C, 0x5EEE71, 0x46E5F2, 0xFCF0CD, 0xFFFFFF, 0xFFFF],
                [0x5AA80C, 0x5DACA0, 0x1A8DAA, 0x129992, 0xDC65FB, 0xA49E0C, 0x5EEE71, 0x46E5F2, 0xFCF0CD, 0xFFFFFF, 0xFFFF]
            ],
            [
                [0x615002, 0xEB8061, 0xD105, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0],
                [0x615001, 0xEB8061, 0xD105, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0],
                [0x615001, 0xEB8061, 0xD105, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0],
                [0x615001, 0xEB8061, 0xD105, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]
            ],
            [
                [0xB0A802, 0xF5C030, 0x6882, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0],
                [0xC2A002, 0xD700C2, 0x1A20B, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0],
                [0xAA000A, 0x67EC6F, 0x1A2527, 0x129992, 0xDC65FB, 0xA49E0C, 0x5EEE71, 0x46E5F2, 0xFCF0CD, 0xFFFFFF, 0xFFFF],
                [0xB0A802, 0xF5C030, 0x6882, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]
            ]
        ],

        USE_GLV: true,
        USE_GS_G2: true,
        USE_GS_GT: true,
        GT_STRONG: false,

        //debug: false,

    };

    return ROM_CURVE_FP256BN;
};