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crypto lib
This commit is contained in:
amjuarez
parent
84ca73ea77
commit
175d06e75e
11 changed files with 4627 additions and 0 deletions
842
src/crypto/crypto-ops-data.c
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842
src/crypto/crypto-ops-data.c
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#include <stdint.h>
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#include "crypto-ops.h"
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/* sqrt(x) is such an integer y that 0 <= y <= p - 1, y % 2 = 0, and y^2 = x (mod p). */
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/* d = -121665 / 121666 */
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const fe fe_d = {-10913610, 13857413, -15372611, 6949391, 114729, -8787816, -6275908, -3247719, -18696448, -12055116}; /* d */
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const fe fe_sqrtm1 = {-32595792, -7943725, 9377950, 3500415, 12389472, -272473, -25146209, -2005654, 326686, 11406482}; /* sqrt(-1) */
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const fe fe_d2 = {-21827239, -5839606, -30745221, 13898782, 229458, 15978800, -12551817, -6495438, 29715968, 9444199}; /* 2 * d */
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/* base[i][j] = (j+1)*256^i*B */
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const ge_precomp ge_base[32][8] = {
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{
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{{25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605},
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{-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378},
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{-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546}},
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{{-12815894, -12976347, -21581243, 11784320, -25355658, -2750717, -11717903, -3814571, -358445, -10211303},
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{-21703237, 6903825, 27185491, 6451973, -29577724, -9554005, -15616551, 11189268, -26829678, -5319081},
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{26966642, 11152617, 32442495, 15396054, 14353839, -12752335, -3128826, -9541118, -15472047, -4166697}},
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{{15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024},
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{16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574},
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{30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357}},
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{{-17036878, 13921892, 10945806, -6033431, 27105052, -16084379, -28926210, 15006023, 3284568, -6276540},
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{23599295, -8306047, -11193664, -7687416, 13236774, 10506355, 7464579, 9656445, 13059162, 10374397},
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{7798556, 16710257, 3033922, 2874086, 28997861, 2835604, 32406664, -3839045, -641708, -101325}},
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{{10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380},
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{4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306},
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{19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942}},
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{{-15371964, -12862754, 32573250, 4720197, -26436522, 5875511, -19188627, -15224819, -9818940, -12085777},
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{-8549212, 109983, 15149363, 2178705, 22900618, 4543417, 3044240, -15689887, 1762328, 14866737},
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{-18199695, -15951423, -10473290, 1707278, -17185920, 3916101, -28236412, 3959421, 27914454, 4383652}},
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{{5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852, 5230134, -23952439, -15175766},
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{-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025, 16520125, 30598449, 7715701},
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{28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300}},
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{{14499471, -2729599, -33191113, -4254652, 28494862, 14271267, 30290735, 10876454, -33154098, 2381726},
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{-7195431, -2655363, -14730155, 462251, -27724326, 3941372, -6236617, 3696005, -32300832, 15351955},
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{27431194, 8222322, 16448760, -3907995, -18707002, 11938355, -32961401, -2970515, 29551813, 10109425}}
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}, {
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{{-13657040, -13155431, -31283750, 11777098, 21447386, 6519384, -2378284, -1627556, 10092783, -4764171},
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{27939166, 14210322, 4677035, 16277044, -22964462, -12398139, -32508754, 12005538, -17810127, 12803510},
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{17228999, -15661624, -1233527, 300140, -1224870, -11714777, 30364213, -9038194, 18016357, 4397660}},
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{{-10958843, -7690207, 4776341, -14954238, 27850028, -15602212, -26619106, 14544525, -17477504, 982639},
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{29253598, 15796703, -2863982, -9908884, 10057023, 3163536, 7332899, -4120128, -21047696, 9934963},
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{5793303, 16271923, -24131614, -10116404, 29188560, 1206517, -14747930, 4559895, -30123922, -10897950}},
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{{-27643952, -11493006, 16282657, -11036493, 28414021, -15012264, 24191034, 4541697, -13338309, 5500568},
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{12650548, -1497113, 9052871, 11355358, -17680037, -8400164, -17430592, 12264343, 10874051, 13524335},
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{25556948, -3045990, 714651, 2510400, 23394682, -10415330, 33119038, 5080568, -22528059, 5376628}},
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{{-26088264, -4011052, -17013699, -3537628, -6726793, 1920897, -22321305, -9447443, 4535768, 1569007},
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{-2255422, 14606630, -21692440, -8039818, 28430649, 8775819, -30494562, 3044290, 31848280, 12543772},
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{-22028579, 2943893, -31857513, 6777306, 13784462, -4292203, -27377195, -2062731, 7718482, 14474653}},
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{{2385315, 2454213, -22631320, 46603, -4437935, -15680415, 656965, -7236665, 24316168, -5253567},
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{13741529, 10911568, -33233417, -8603737, -20177830, -1033297, 33040651, -13424532, -20729456, 8321686},
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{21060490, -2212744, 15712757, -4336099, 1639040, 10656336, 23845965, -11874838, -9984458, 608372}},
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{{-13672732, -15087586, -10889693, -7557059, -6036909, 11305547, 1123968, -6780577, 27229399, 23887},
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{-23244140, -294205, -11744728, 14712571, -29465699, -2029617, 12797024, -6440308, -1633405, 16678954},
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{-29500620, 4770662, -16054387, 14001338, 7830047, 9564805, -1508144, -4795045, -17169265, 4904953}},
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{{24059557, 14617003, 19037157, -15039908, 19766093, -14906429, 5169211, 16191880, 2128236, -4326833},
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{-16981152, 4124966, -8540610, -10653797, 30336522, -14105247, -29806336, 916033, -6882542, -2986532},
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{-22630907, 12419372, -7134229, -7473371, -16478904, 16739175, 285431, 2763829, 15736322, 4143876}},
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{{2379352, 11839345, -4110402, -5988665, 11274298, 794957, 212801, -14594663, 23527084, -16458268},
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{33431127, -11130478, -17838966, -15626900, 8909499, 8376530, -32625340, 4087881, -15188911, -14416214},
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{1767683, 7197987, -13205226, -2022635, -13091350, 448826, 5799055, 4357868, -4774191, -16323038}}
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}, {
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{{6721966, 13833823, -23523388, -1551314, 26354293, -11863321, 23365147, -3949732, 7390890, 2759800},
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{4409041, 2052381, 23373853, 10530217, 7676779, -12885954, 21302353, -4264057, 1244380, -12919645},
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{-4421239, 7169619, 4982368, -2957590, 30256825, -2777540, 14086413, 9208236, 15886429, 16489664}},
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{{1996075, 10375649, 14346367, 13311202, -6874135, -16438411, -13693198, 398369, -30606455, -712933},
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{-25307465, 9795880, -2777414, 14878809, -33531835, 14780363, 13348553, 12076947, -30836462, 5113182},
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{-17770784, 11797796, 31950843, 13929123, -25888302, 12288344, -30341101, -7336386, 13847711, 5387222}},
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{{-18582163, -3416217, 17824843, -2340966, 22744343, -10442611, 8763061, 3617786, -19600662, 10370991},
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{20246567, -14369378, 22358229, -543712, 18507283, -10413996, 14554437, -8746092, 32232924, 16763880},
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{9648505, 10094563, 26416693, 14745928, -30374318, -6472621, 11094161, 15689506, 3140038, -16510092}},
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{{-16160072, 5472695, 31895588, 4744994, 8823515, 10365685, -27224800, 9448613, -28774454, 366295},
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{19153450, 11523972, -11096490, -6503142, -24647631, 5420647, 28344573, 8041113, 719605, 11671788},
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{8678025, 2694440, -6808014, 2517372, 4964326, 11152271, -15432916, -15266516, 27000813, -10195553}},
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{{-15157904, 7134312, 8639287, -2814877, -7235688, 10421742, 564065, 5336097, 6750977, -14521026},
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{11836410, -3979488, 26297894, 16080799, 23455045, 15735944, 1695823, -8819122, 8169720, 16220347},
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{-18115838, 8653647, 17578566, -6092619, -8025777, -16012763, -11144307, -2627664, -5990708, -14166033}},
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{{-23308498, -10968312, 15213228, -10081214, -30853605, -11050004, 27884329, 2847284, 2655861, 1738395},
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{-27537433, -14253021, -25336301, -8002780, -9370762, 8129821, 21651608, -3239336, -19087449, -11005278},
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{1533110, 3437855, 23735889, 459276, 29970501, 11335377, 26030092, 5821408, 10478196, 8544890}},
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{{32173121, -16129311, 24896207, 3921497, 22579056, -3410854, 19270449, 12217473, 17789017, -3395995},
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{-30552961, -2228401, -15578829, -10147201, 13243889, 517024, 15479401, -3853233, 30460520, 1052596},
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{-11614875, 13323618, 32618793, 8175907, -15230173, 12596687, 27491595, -4612359, 3179268, -9478891}},
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{{31947069, -14366651, -4640583, -15339921, -15125977, -6039709, -14756777, -16411740, 19072640, -9511060},
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{11685058, 11822410, 3158003, -13952594, 33402194, -4165066, 5977896, -5215017, 473099, 5040608},
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{-20290863, 8198642, -27410132, 11602123, 1290375, -2799760, 28326862, 1721092, -19558642, -3131606}}
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}, {
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{{7881532, 10687937, 7578723, 7738378, -18951012, -2553952, 21820786, 8076149, -27868496, 11538389},
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{-19935666, 3899861, 18283497, -6801568, -15728660, -11249211, 8754525, 7446702, -5676054, 5797016},
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{-11295600, -3793569, -15782110, -7964573, 12708869, -8456199, 2014099, -9050574, -2369172, -5877341}},
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{{-22472376, -11568741, -27682020, 1146375, 18956691, 16640559, 1192730, -3714199, 15123619, 10811505},
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{14352098, -3419715, -18942044, 10822655, 32750596, 4699007, -70363, 15776356, -28886779, -11974553},
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{-28241164, -8072475, -4978962, -5315317, 29416931, 1847569, -20654173, -16484855, 4714547, -9600655}},
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{{15200332, 8368572, 19679101, 15970074, -31872674, 1959451, 24611599, -4543832, -11745876, 12340220},
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{12876937, -10480056, 33134381, 6590940, -6307776, 14872440, 9613953, 8241152, 15370987, 9608631},
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{-4143277, -12014408, 8446281, -391603, 4407738, 13629032, -7724868, 15866074, -28210621, -8814099}},
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{{26660628, -15677655, 8393734, 358047, -7401291, 992988, -23904233, 858697, 20571223, 8420556},
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{14620715, 13067227, -15447274, 8264467, 14106269, 15080814, 33531827, 12516406, -21574435, -12476749},
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{236881, 10476226, 57258, -14677024, 6472998, 2466984, 17258519, 7256740, 8791136, 15069930}},
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{{1276410, -9371918, 22949635, -16322807, -23493039, -5702186, 14711875, 4874229, -30663140, -2331391},
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{5855666, 4990204, -13711848, 7294284, -7804282, 1924647, -1423175, -7912378, -33069337, 9234253},
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{20590503, -9018988, 31529744, -7352666, -2706834, 10650548, 31559055, -11609587, 18979186, 13396066}},
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{{24474287, 4968103, 22267082, 4407354, 24063882, -8325180, -18816887, 13594782, 33514650, 7021958},
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{-11566906, -6565505, -21365085, 15928892, -26158305, 4315421, -25948728, -3916677, -21480480, 12868082},
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{-28635013, 13504661, 19988037, -2132761, 21078225, 6443208, -21446107, 2244500, -12455797, -8089383}},
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{{-30595528, 13793479, -5852820, 319136, -25723172, -6263899, 33086546, 8957937, -15233648, 5540521},
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{-11630176, -11503902, -8119500, -7643073, 2620056, 1022908, -23710744, -1568984, -16128528, -14962807},
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{23152971, 775386, 27395463, 14006635, -9701118, 4649512, 1689819, 892185, -11513277, -15205948}},
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{{9770129, 9586738, 26496094, 4324120, 1556511, -3550024, 27453819, 4763127, -19179614, 5867134},
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{-32765025, 1927590, 31726409, -4753295, 23962434, -16019500, 27846559, 5931263, -29749703, -16108455},
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{27461885, -2977536, 22380810, 1815854, -23033753, -3031938, 7283490, -15148073, -19526700, 7734629}}
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}, {
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{{-8010264, -9590817, -11120403, 6196038, 29344158, -13430885, 7585295, -3176626, 18549497, 15302069},
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{-32658337, -6171222, -7672793, -11051681, 6258878, 13504381, 10458790, -6418461, -8872242, 8424746},
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{24687205, 8613276, -30667046, -3233545, 1863892, -1830544, 19206234, 7134917, -11284482, -828919}},
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{{11334899, -9218022, 8025293, 12707519, 17523892, -10476071, 10243738, -14685461, -5066034, 16498837},
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{8911542, 6887158, -9584260, -6958590, 11145641, -9543680, 17303925, -14124238, 6536641, 10543906},
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{-28946384, 15479763, -17466835, 568876, -1497683, 11223454, -2669190, -16625574, -27235709, 8876771}},
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{{-25742899, -12566864, -15649966, -846607, -33026686, -796288, -33481822, 15824474, -604426, -9039817},
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{10330056, 70051, 7957388, -9002667, 9764902, 15609756, 27698697, -4890037, 1657394, 3084098},
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{10477963, -7470260, 12119566, -13250805, 29016247, -5365589, 31280319, 14396151, -30233575, 15272409}},
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{{-12288309, 3169463, 28813183, 16658753, 25116432, -5630466, -25173957, -12636138, -25014757, 1950504},
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{-26180358, 9489187, 11053416, -14746161, -31053720, 5825630, -8384306, -8767532, 15341279, 8373727},
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{28685821, 7759505, -14378516, -12002860, -31971820, 4079242, 298136, -10232602, -2878207, 15190420}},
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{{-32932876, 13806336, -14337485, -15794431, -24004620, 10940928, 8669718, 2742393, -26033313, -6875003},
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{-1580388, -11729417, -25979658, -11445023, -17411874, -10912854, 9291594, -16247779, -12154742, 6048605},
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{-30305315, 14843444, 1539301, 11864366, 20201677, 1900163, 13934231, 5128323, 11213262, 9168384}},
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{{-26280513, 11007847, 19408960, -940758, -18592965, -4328580, -5088060, -11105150, 20470157, -16398701},
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{-23136053, 9282192, 14855179, -15390078, -7362815, -14408560, -22783952, 14461608, 14042978, 5230683},
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{29969567, -2741594, -16711867, -8552442, 9175486, -2468974, 21556951, 3506042, -5933891, -12449708}},
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{{-3144746, 8744661, 19704003, 4581278, -20430686, 6830683, -21284170, 8971513, -28539189, 15326563},
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{-19464629, 10110288, -17262528, -3503892, -23500387, 1355669, -15523050, 15300988, -20514118, 9168260},
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{-5353335, 4488613, -23803248, 16314347, 7780487, -15638939, -28948358, 9601605, 33087103, -9011387}},
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{{-19443170, -15512900, -20797467, -12445323, -29824447, 10229461, -27444329, -15000531, -5996870, 15664672},
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{23294591, -16632613, -22650781, -8470978, 27844204, 11461195, 13099750, -2460356, 18151676, 13417686},
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{-24722913, -4176517, -31150679, 5988919, -26858785, 6685065, 1661597, -12551441, 15271676, -15452665}}
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}, {
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{{11433042, -13228665, 8239631, -5279517, -1985436, -725718, -18698764, 2167544, -6921301, -13440182},
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{-31436171, 15575146, 30436815, 12192228, -22463353, 9395379, -9917708, -8638997, 12215110, 12028277},
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{14098400, 6555944, 23007258, 5757252, -15427832, -12950502, 30123440, 4617780, -16900089, -655628}},
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{{-4026201, -15240835, 11893168, 13718664, -14809462, 1847385, -15819999, 10154009, 23973261, -12684474},
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||||||
|
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||||||
|
{26287124, 4821776, 25476601, -4145903, -3764513, -15788984, -18008582, 1182479, -26094821, -13079595},
|
||||||
|
{-7171154, 3178080, 23970071, 6201893, -17195577, -4489192, -21876275, -13982627, 32208683, -1198248}},
|
||||||
|
{{-16657702, 2817643, -10286362, 14811298, 6024667, 13349505, -27315504, -10497842, -27672585, -11539858},
|
||||||
|
{15941029, -9405932, -21367050, 8062055, 31876073, -238629, -15278393, -1444429, 15397331, -4130193},
|
||||||
|
{8934485, -13485467, -23286397, -13423241, -32446090, 14047986, 31170398, -1441021, -27505566, 15087184}},
|
||||||
|
{{-18357243, -2156491, 24524913, -16677868, 15520427, -6360776, -15502406, 11461896, 16788528, -5868942},
|
||||||
|
{-1947386, 16013773, 21750665, 3714552, -17401782, -16055433, -3770287, -10323320, 31322514, -11615635},
|
||||||
|
{21426655, -5650218, -13648287, -5347537, -28812189, -4920970, -18275391, -14621414, 13040862, -12112948}},
|
||||||
|
{{11293895, 12478086, -27136401, 15083750, -29307421, 14748872, 14555558, -13417103, 1613711, 4896935},
|
||||||
|
{-25894883, 15323294, -8489791, -8057900, 25967126, -13425460, 2825960, -4897045, -23971776, -11267415},
|
||||||
|
{-15924766, -5229880, -17443532, 6410664, 3622847, 10243618, 20615400, 12405433, -23753030, -8436416}},
|
||||||
|
{{-7091295, 12556208, -20191352, 9025187, -17072479, 4333801, 4378436, 2432030, 23097949, -566018},
|
||||||
|
{4565804, -16025654, 20084412, -7842817, 1724999, 189254, 24767264, 10103221, -18512313, 2424778},
|
||||||
|
{366633, -11976806, 8173090, -6890119, 30788634, 5745705, -7168678, 1344109, -3642553, 12412659}},
|
||||||
|
{{-24001791, 7690286, 14929416, -168257, -32210835, -13412986, 24162697, -15326504, -3141501, 11179385},
|
||||||
|
{18289522, -14724954, 8056945, 16430056, -21729724, 7842514, -6001441, -1486897, -18684645, -11443503},
|
||||||
|
{476239, 6601091, -6152790, -9723375, 17503545, -4863900, 27672959, 13403813, 11052904, 5219329}}
|
||||||
|
}, {
|
||||||
|
{{20678546, -8375738, -32671898, 8849123, -5009758, 14574752, 31186971, -3973730, 9014762, -8579056},
|
||||||
|
{-13644050, -10350239, -15962508, 5075808, -1514661, -11534600, -33102500, 9160280, 8473550, -3256838},
|
||||||
|
{24900749, 14435722, 17209120, -15292541, -22592275, 9878983, -7689309, -16335821, -24568481, 11788948}},
|
||||||
|
{{-3118155, -11395194, -13802089, 14797441, 9652448, -6845904, -20037437, 10410733, -24568470, -1458691},
|
||||||
|
{-15659161, 16736706, -22467150, 10215878, -9097177, 7563911, 11871841, -12505194, -18513325, 8464118},
|
||||||
|
{-23400612, 8348507, -14585951, -861714, -3950205, -6373419, 14325289, 8628612, 33313881, -8370517}},
|
||||||
|
{{-20186973, -4967935, 22367356, 5271547, -1097117, -4788838, -24805667, -10236854, -8940735, -5818269},
|
||||||
|
{-6948785, -1795212, -32625683, -16021179, 32635414, -7374245, 15989197, -12838188, 28358192, -4253904},
|
||||||
|
{-23561781, -2799059, -32351682, -1661963, -9147719, 10429267, -16637684, 4072016, -5351664, 5596589}},
|
||||||
|
{{-28236598, -3390048, 12312896, 6213178, 3117142, 16078565, 29266239, 2557221, 1768301, 15373193},
|
||||||
|
{-7243358, -3246960, -4593467, -7553353, -127927, -912245, -1090902, -4504991, -24660491, 3442910},
|
||||||
|
{-30210571, 5124043, 14181784, 8197961, 18964734, -11939093, 22597931, 7176455, -18585478, 13365930}},
|
||||||
|
{{-7877390, -1499958, 8324673, 4690079, 6261860, 890446, 24538107, -8570186, -9689599, -3031667},
|
||||||
|
{25008904, -10771599, -4305031, -9638010, 16265036, 15721635, 683793, -11823784, 15723479, -15163481},
|
||||||
|
{-9660625, 12374379, -27006999, -7026148, -7724114, -12314514, 11879682, 5400171, 519526, -1235876}},
|
||||||
|
{{22258397, -16332233, -7869817, 14613016, -22520255, -2950923, -20353881, 7315967, 16648397, 7605640},
|
||||||
|
{-8081308, -8464597, -8223311, 9719710, 19259459, -15348212, 23994942, -5281555, -9468848, 4763278},
|
||||||
|
{-21699244, 9220969, -15730624, 1084137, -25476107, -2852390, 31088447, -7764523, -11356529, 728112}},
|
||||||
|
{{26047220, -11751471, -6900323, -16521798, 24092068, 9158119, -4273545, -12555558, -29365436, -5498272},
|
||||||
|
{17510331, -322857, 5854289, 8403524, 17133918, -3112612, -28111007, 12327945, 10750447, 10014012},
|
||||||
|
{-10312768, 3936952, 9156313, -8897683, 16498692, -994647, -27481051, -666732, 3424691, 7540221}},
|
||||||
|
{{30322361, -6964110, 11361005, -4143317, 7433304, 4989748, -7071422, -16317219, -9244265, 15258046},
|
||||||
|
{13054562, -2779497, 19155474, 469045, -12482797, 4566042, 5631406, 2711395, 1062915, -5136345},
|
||||||
|
{-19240248, -11254599, -29509029, -7499965, -5835763, 13005411, -6066489, 12194497, 32960380, 1459310}}
|
||||||
|
}, {
|
||||||
|
{{19852034, 7027924, 23669353, 10020366, 8586503, -6657907, 394197, -6101885, 18638003, -11174937},
|
||||||
|
{31395534, 15098109, 26581030, 8030562, -16527914, -5007134, 9012486, -7584354, -6643087, -5442636},
|
||||||
|
{-9192165, -2347377, -1997099, 4529534, 25766844, 607986, -13222, 9677543, -32294889, -6456008}},
|
||||||
|
{{-2444496, -149937, 29348902, 8186665, 1873760, 12489863, -30934579, -7839692, -7852844, -8138429},
|
||||||
|
{-15236356, -15433509, 7766470, 746860, 26346930, -10221762, -27333451, 10754588, -9431476, 5203576},
|
||||||
|
{31834314, 14135496, -770007, 5159118, 20917671, -16768096, -7467973, -7337524, 31809243, 7347066}},
|
||||||
|
{{-9606723, -11874240, 20414459, 13033986, 13716524, -11691881, 19797970, -12211255, 15192876, -2087490},
|
||||||
|
{-12663563, -2181719, 1168162, -3804809, 26747877, -14138091, 10609330, 12694420, 33473243, -13382104},
|
||||||
|
{33184999, 11180355, 15832085, -11385430, -1633671, 225884, 15089336, -11023903, -6135662, 14480053}},
|
||||||
|
{{31308717, -5619998, 31030840, -1897099, 15674547, -6582883, 5496208, 13685227, 27595050, 8737275},
|
||||||
|
{-20318852, -15150239, 10933843, -16178022, 8335352, -7546022, -31008351, -12610604, 26498114, 66511},
|
||||||
|
{22644454, -8761729, -16671776, 4884562, -3105614, -13559366, 30540766, -4286747, -13327787, -7515095}},
|
||||||
|
{{-28017847, 9834845, 18617207, -2681312, -3401956, -13307506, 8205540, 13585437, -17127465, 15115439},
|
||||||
|
{23711543, -672915, 31206561, -8362711, 6164647, -9709987, -33535882, -1426096, 8236921, 16492939},
|
||||||
|
{-23910559, -13515526, -26299483, -4503841, 25005590, -7687270, 19574902, 10071562, 6708380, -6222424}},
|
||||||
|
{{2101391, -4930054, 19702731, 2367575, -15427167, 1047675, 5301017, 9328700, 29955601, -11678310},
|
||||||
|
{3096359, 9271816, -21620864, -15521844, -14847996, -7592937, -25892142, -12635595, -9917575, 6216608},
|
||||||
|
{-32615849, 338663, -25195611, 2510422, -29213566, -13820213, 24822830, -6146567, -26767480, 7525079}},
|
||||||
|
{{-23066649, -13985623, 16133487, -7896178, -3389565, 778788, -910336, -2782495, -19386633, 11994101},
|
||||||
|
{21691500, -13624626, -641331, -14367021, 3285881, -3483596, -25064666, 9718258, -7477437, 13381418},
|
||||||
|
{18445390, -4202236, 14979846, 11622458, -1727110, -3582980, 23111648, -6375247, 28535282, 15779576}},
|
||||||
|
{{30098053, 3089662, -9234387, 16662135, -21306940, 11308411, -14068454, 12021730, 9955285, -16303356},
|
||||||
|
{9734894, -14576830, -7473633, -9138735, 2060392, 11313496, -18426029, 9924399, 20194861, 13380996},
|
||||||
|
{-26378102, -7965207, -22167821, 15789297, -18055342, -6168792, -1984914, 15707771, 26342023, 10146099}}
|
||||||
|
}, {
|
||||||
|
{{-26016874, -219943, 21339191, -41388, 19745256, -2878700, -29637280, 2227040, 21612326, -545728},
|
||||||
|
{-13077387, 1184228, 23562814, -5970442, -20351244, -6348714, 25764461, 12243797, -20856566, 11649658},
|
||||||
|
{-10031494, 11262626, 27384172, 2271902, 26947504, -15997771, 39944, 6114064, 33514190, 2333242}},
|
||||||
|
{{-21433588, -12421821, 8119782, 7219913, -21830522, -9016134, -6679750, -12670638, 24350578, -13450001},
|
||||||
|
{-4116307, -11271533, -23886186, 4843615, -30088339, 690623, -31536088, -10406836, 8317860, 12352766},
|
||||||
|
{18200138, -14475911, -33087759, -2696619, -23702521, -9102511, -23552096, -2287550, 20712163, 6719373}},
|
||||||
|
{{26656208, 6075253, -7858556, 1886072, -28344043, 4262326, 11117530, -3763210, 26224235, -3297458},
|
||||||
|
{-17168938, -14854097, -3395676, -16369877, -19954045, 14050420, 21728352, 9493610, 18620611, -16428628},
|
||||||
|
{-13323321, 13325349, 11432106, 5964811, 18609221, 6062965, -5269471, -9725556, -30701573, -16479657}},
|
||||||
|
{{-23860538, -11233159, 26961357, 1640861, -32413112, -16737940, 12248509, -5240639, 13735342, 1934062},
|
||||||
|
{25089769, 6742589, 17081145, -13406266, 21909293, -16067981, -15136294, -3765346, -21277997, 5473616},
|
||||||
|
{31883677, -7961101, 1083432, -11572403, 22828471, 13290673, -7125085, 12469656, 29111212, -5451014}},
|
||||||
|
{{24244947, -15050407, -26262976, 2791540, -14997599, 16666678, 24367466, 6388839, -10295587, 452383},
|
||||||
|
{-25640782, -3417841, 5217916, 16224624, 19987036, -4082269, -24236251, -5915248, 15766062, 8407814},
|
||||||
|
{-20406999, 13990231, 15495425, 16395525, 5377168, 15166495, -8917023, -4388953, -8067909, 2276718}},
|
||||||
|
{{30157918, 12924066, -17712050, 9245753, 19895028, 3368142, -23827587, 5096219, 22740376, -7303417},
|
||||||
|
{2041139, -14256350, 7783687, 13876377, -25946985, -13352459, 24051124, 13742383, -15637599, 13295222},
|
||||||
|
{33338237, -8505733, 12532113, 7977527, 9106186, -1715251, -17720195, -4612972, -4451357, -14669444}},
|
||||||
|
{{-20045281, 5454097, -14346548, 6447146, 28862071, 1883651, -2469266, -4141880, 7770569, 9620597},
|
||||||
|
{23208068, 7979712, 33071466, 8149229, 1758231, -10834995, 30945528, -1694323, -33502340, -14767970},
|
||||||
|
{1439958, -16270480, -1079989, -793782, 4625402, 10647766, -5043801, 1220118, 30494170, -11440799}},
|
||||||
|
{{-5037580, -13028295, -2970559, -3061767, 15640974, -6701666, -26739026, 926050, -1684339, -13333647},
|
||||||
|
{13908495, -3549272, 30919928, -6273825, -21521863, 7989039, 9021034, 9078865, 3353509, 4033511},
|
||||||
|
{-29663431, -15113610, 32259991, -344482, 24295849, -12912123, 23161163, 8839127, 27485041, 7356032}}
|
||||||
|
}, {
|
||||||
|
{{9661027, 705443, 11980065, -5370154, -1628543, 14661173, -6346142, 2625015, 28431036, -16771834},
|
||||||
|
{-23839233, -8311415, -25945511, 7480958, -17681669, -8354183, -22545972, 14150565, 15970762, 4099461},
|
||||||
|
{29262576, 16756590, 26350592, -8793563, 8529671, -11208050, 13617293, -9937143, 11465739, 8317062}},
|
||||||
|
{{-25493081, -6962928, 32500200, -9419051, -23038724, -2302222, 14898637, 3848455, 20969334, -5157516},
|
||||||
|
{-20384450, -14347713, -18336405, 13884722, -33039454, 2842114, -21610826, -3649888, 11177095, 14989547},
|
||||||
|
{-24496721, -11716016, 16959896, 2278463, 12066309, 10137771, 13515641, 2581286, -28487508, 9930240}},
|
||||||
|
{{-17751622, -2097826, 16544300, -13009300, -15914807, -14949081, 18345767, -13403753, 16291481, -5314038},
|
||||||
|
{-33229194, 2553288, 32678213, 9875984, 8534129, 6889387, -9676774, 6957617, 4368891, 9788741},
|
||||||
|
{16660756, 7281060, -10830758, 12911820, 20108584, -8101676, -21722536, -8613148, 16250552, -11111103}},
|
||||||
|
{{-19765507, 2390526, -16551031, 14161980, 1905286, 6414907, 4689584, 10604807, -30190403, 4782747},
|
||||||
|
{-1354539, 14736941, -7367442, -13292886, 7710542, -14155590, -9981571, 4383045, 22546403, 437323},
|
||||||
|
{31665577, -12180464, -16186830, 1491339, -18368625, 3294682, 27343084, 2786261, -30633590, -14097016}},
|
||||||
|
{{-14467279, -683715, -33374107, 7448552, 19294360, 14334329, -19690631, 2355319, -19284671, -6114373},
|
||||||
|
{15121312, -15796162, 6377020, -6031361, -10798111, -12957845, 18952177, 15496498, -29380133, 11754228},
|
||||||
|
{-2637277, -13483075, 8488727, -14303896, 12728761, -1622493, 7141596, 11724556, 22761615, -10134141}},
|
||||||
|
{{16918416, 11729663, -18083579, 3022987, -31015732, -13339659, -28741185, -12227393, 32851222, 11717399},
|
||||||
|
{11166634, 7338049, -6722523, 4531520, -29468672, -7302055, 31474879, 3483633, -1193175, -4030831},
|
||||||
|
{-185635, 9921305, 31456609, -13536438, -12013818, 13348923, 33142652, 6546660, -19985279, -3948376}},
|
||||||
|
{{-32460596, 11266712, -11197107, -7899103, 31703694, 3855903, -8537131, -12833048, -30772034, -15486313},
|
||||||
|
{-18006477, 12709068, 3991746, -6479188, -21491523, -10550425, -31135347, -16049879, 10928917, 3011958},
|
||||||
|
{-6957757, -15594337, 31696059, 334240, 29576716, 14796075, -30831056, -12805180, 18008031, 10258577}},
|
||||||
|
{{-22448644, 15655569, 7018479, -4410003, -30314266, -1201591, -1853465, 1367120, 25127874, 6671743},
|
||||||
|
{29701166, -14373934, -10878120, 9279288, -17568, 13127210, 21382910, 11042292, 25838796, 4642684},
|
||||||
|
{-20430234, 14955537, -24126347, 8124619, -5369288, -5990470, 30468147, -13900640, 18423289, 4177476}}
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
const ge_precomp ge_Bi[8] = {
|
||||||
|
{{25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605},
|
||||||
|
{-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378},
|
||||||
|
{-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546}}, {{15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024},
|
||||||
|
{16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574},
|
||||||
|
{30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357}}, {{10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380},
|
||||||
|
{4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306},
|
||||||
|
{19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942}}, {{5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852, 5230134, -23952439, -15175766},
|
||||||
|
{-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025, 16520125, 30598449, 7715701},
|
||||||
|
{28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300}}, {{-22518993, -6692182, 14201702, -8745502, -23510406, 8844726, 18474211, -1361450, -13062696, 13821877},
|
||||||
|
{-6455177, -7839871, 3374702, -4740862, -27098617, -10571707, 31655028, -7212327, 18853322, -14220951},
|
||||||
|
{4566830, -12963868, -28974889, -12240689, -7602672, -2830569, -8514358, -10431137, 2207753, -3209784}}, {{-25154831, -4185821, 29681144, 7868801, -6854661, -9423865, -12437364, -663000, -31111463, -16132436},
|
||||||
|
{25576264, -2703214, 7349804, -11814844, 16472782, 9300885, 3844789, 15725684, 171356, 6466918},
|
||||||
|
{23103977, 13316479, 9739013, -16149481, 817875, -15038942, 8965339, -14088058, -30714912, 16193877}}, {{-33521811, 3180713, -2394130, 14003687, -16903474, -16270840, 17238398, 4729455, -18074513, 9256800},
|
||||||
|
{-25182317, -4174131, 32336398, 5036987, -21236817, 11360617, 22616405, 9761698, -19827198, 630305},
|
||||||
|
{-13720693, 2639453, -24237460, -7406481, 9494427, -5774029, -6554551, -15960994, -2449256, -14291300}}, {{-3151181, -5046075, 9282714, 6866145, -31907062, -863023, -18940575, 15033784, 25105118, -7894876},
|
||||||
|
{-24326370, 15950226, -31801215, -14592823, -11662737, -5090925, 1573892, -2625887, 2198790, -15804619},
|
||||||
|
{-3099351, 10324967, -2241613, 7453183, -5446979, -2735503, -13812022, -16236442, -32461234, -12290683}}
|
||||||
|
};
|
||||||
|
|
||||||
|
/* A = 2 * (1 - d) / (1 + d) = 486662 */
|
||||||
|
const fe fe_ma2 = {-12721188, -3529, 0, 0, 0, 0, 0, 0, 0, 0}; /* -A^2 */
|
||||||
|
const fe fe_ma = {-486662, 0, 0, 0, 0, 0, 0, 0, 0, 0}; /* -A */
|
||||||
|
const fe fe_fffb1 = {-31702527, -2466483, -26106795, -12203692, -12169197, -321052, 14850977, -10296299, -16929438, -407568}; /* sqrt(-2 * A * (A + 2)) */
|
||||||
|
const fe fe_fffb2 = {8166131, -6741800, -17040804, 3154616, 21461005, 1466302, -30876704, -6368709, 10503587, -13363080}; /* sqrt(2 * A * (A + 2)) */
|
||||||
|
const fe fe_fffb3 = {-13620103, 14639558, 4532995, 7679154, 16815101, -15883539, -22863840, -14813421, 13716513, -6477756}; /* sqrt(-sqrt(-1) * A * (A + 2)) */
|
||||||
|
const fe fe_fffb4 = {-21786234, -12173074, 21573800, 4524538, -4645904, 16204591, 8012863, -8444712, 3212926, 6885324}; /* sqrt(sqrt(-1) * A * (A + 2)) */
|
||||||
2893
src/crypto/crypto-ops.c
Normal file
2893
src/crypto/crypto-ops.c
Normal file
File diff suppressed because it is too large
Load diff
115
src/crypto/crypto-ops.h
Normal file
115
src/crypto/crypto-ops.h
Normal file
|
|
@ -0,0 +1,115 @@
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
/* From fe.h */
|
||||||
|
|
||||||
|
typedef int32_t fe[10];
|
||||||
|
|
||||||
|
/* From ge.h */
|
||||||
|
|
||||||
|
typedef struct {
|
||||||
|
fe X;
|
||||||
|
fe Y;
|
||||||
|
fe Z;
|
||||||
|
} ge_p2;
|
||||||
|
|
||||||
|
typedef struct {
|
||||||
|
fe X;
|
||||||
|
fe Y;
|
||||||
|
fe Z;
|
||||||
|
fe T;
|
||||||
|
} ge_p3;
|
||||||
|
|
||||||
|
typedef struct {
|
||||||
|
fe X;
|
||||||
|
fe Y;
|
||||||
|
fe Z;
|
||||||
|
fe T;
|
||||||
|
} ge_p1p1;
|
||||||
|
|
||||||
|
typedef struct {
|
||||||
|
fe yplusx;
|
||||||
|
fe yminusx;
|
||||||
|
fe xy2d;
|
||||||
|
} ge_precomp;
|
||||||
|
|
||||||
|
typedef struct {
|
||||||
|
fe YplusX;
|
||||||
|
fe YminusX;
|
||||||
|
fe Z;
|
||||||
|
fe T2d;
|
||||||
|
} ge_cached;
|
||||||
|
|
||||||
|
/* From ge_add.c */
|
||||||
|
|
||||||
|
void ge_add(ge_p1p1 *, const ge_p3 *, const ge_cached *);
|
||||||
|
|
||||||
|
/* From ge_double_scalarmult.c, modified */
|
||||||
|
|
||||||
|
typedef ge_cached ge_dsmp[8];
|
||||||
|
extern const ge_precomp ge_Bi[8];
|
||||||
|
void ge_dsm_precomp(ge_dsmp r, const ge_p3 *s);
|
||||||
|
void ge_double_scalarmult_base_vartime(ge_p2 *, const unsigned char *, const ge_p3 *, const unsigned char *);
|
||||||
|
|
||||||
|
/* From ge_frombytes.c, modified */
|
||||||
|
|
||||||
|
extern const fe fe_sqrtm1;
|
||||||
|
extern const fe fe_d;
|
||||||
|
int ge_frombytes_vartime(ge_p3 *, const unsigned char *);
|
||||||
|
|
||||||
|
/* From ge_p1p1_to_p2.c */
|
||||||
|
|
||||||
|
void ge_p1p1_to_p2(ge_p2 *, const ge_p1p1 *);
|
||||||
|
|
||||||
|
/* From ge_p1p1_to_p3.c */
|
||||||
|
|
||||||
|
void ge_p1p1_to_p3(ge_p3 *, const ge_p1p1 *);
|
||||||
|
|
||||||
|
/* From ge_p2_dbl.c */
|
||||||
|
|
||||||
|
void ge_p2_dbl(ge_p1p1 *, const ge_p2 *);
|
||||||
|
|
||||||
|
/* From ge_p3_to_cached.c */
|
||||||
|
|
||||||
|
extern const fe fe_d2;
|
||||||
|
void ge_p3_to_cached(ge_cached *, const ge_p3 *);
|
||||||
|
|
||||||
|
/* From ge_p3_to_p2.c */
|
||||||
|
|
||||||
|
void ge_p3_to_p2(ge_p2 *, const ge_p3 *);
|
||||||
|
|
||||||
|
/* From ge_p3_tobytes.c */
|
||||||
|
|
||||||
|
void ge_p3_tobytes(unsigned char *, const ge_p3 *);
|
||||||
|
|
||||||
|
/* From ge_scalarmult_base.c */
|
||||||
|
|
||||||
|
extern const ge_precomp ge_base[32][8];
|
||||||
|
void ge_scalarmult_base(ge_p3 *, const unsigned char *);
|
||||||
|
|
||||||
|
/* From ge_tobytes.c */
|
||||||
|
|
||||||
|
void ge_tobytes(unsigned char *, const ge_p2 *);
|
||||||
|
|
||||||
|
/* From sc_reduce.c */
|
||||||
|
|
||||||
|
void sc_reduce(unsigned char *);
|
||||||
|
|
||||||
|
/* New code */
|
||||||
|
|
||||||
|
void ge_scalarmult(ge_p2 *, const unsigned char *, const ge_p3 *);
|
||||||
|
void ge_double_scalarmult_precomp_vartime(ge_p2 *, const unsigned char *, const ge_p3 *, const unsigned char *, const ge_dsmp);
|
||||||
|
void ge_mul8(ge_p1p1 *, const ge_p2 *);
|
||||||
|
extern const fe fe_ma2;
|
||||||
|
extern const fe fe_ma;
|
||||||
|
extern const fe fe_fffb1;
|
||||||
|
extern const fe fe_fffb2;
|
||||||
|
extern const fe fe_fffb3;
|
||||||
|
extern const fe fe_fffb4;
|
||||||
|
void ge_fromfe_frombytes_vartime(ge_p2 *, const unsigned char *);
|
||||||
|
void sc_0(unsigned char *);
|
||||||
|
void sc_reduce32(unsigned char *);
|
||||||
|
void sc_add(unsigned char *, const unsigned char *, const unsigned char *);
|
||||||
|
void sc_sub(unsigned char *, const unsigned char *, const unsigned char *);
|
||||||
|
void sc_mulsub(unsigned char *, const unsigned char *, const unsigned char *, const unsigned char *);
|
||||||
|
int sc_check(const unsigned char *);
|
||||||
|
int sc_isnonzero(const unsigned char *); /* Doesn't normalize */
|
||||||
245
src/crypto/crypto.cpp
Normal file
245
src/crypto/crypto.cpp
Normal file
|
|
@ -0,0 +1,245 @@
|
||||||
|
#include <alloca.h>
|
||||||
|
#include <cassert>
|
||||||
|
#include <cstddef>
|
||||||
|
#include <cstdint>
|
||||||
|
#include <cstdlib>
|
||||||
|
#include <cstring>
|
||||||
|
#include <memory>
|
||||||
|
|
||||||
|
#include "crypto.h"
|
||||||
|
#include "random.h"
|
||||||
|
|
||||||
|
namespace crypto {
|
||||||
|
|
||||||
|
using std::abort;
|
||||||
|
using std::int32_t;
|
||||||
|
using std::int64_t;
|
||||||
|
using std::size_t;
|
||||||
|
using std::uint32_t;
|
||||||
|
using std::uint64_t;
|
||||||
|
|
||||||
|
extern "C" {
|
||||||
|
#include "crypto-ops.h"
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline unsigned char *operator &(ec_point &point) {
|
||||||
|
return &reinterpret_cast<unsigned char &>(point);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline const unsigned char *operator &(const ec_point &point) {
|
||||||
|
return &reinterpret_cast<const unsigned char &>(point);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline unsigned char *operator &(ec_scalar &scalar) {
|
||||||
|
return &reinterpret_cast<unsigned char &>(scalar);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline const unsigned char *operator &(const ec_scalar &scalar) {
|
||||||
|
return &reinterpret_cast<const unsigned char &>(scalar);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void random_scalar(ec_scalar &res) {
|
||||||
|
unsigned char tmp[64];
|
||||||
|
generate_random_bytes(64, tmp);
|
||||||
|
sc_reduce(tmp);
|
||||||
|
memcpy(&res, tmp, 32);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void hash_to_scalar(const void *data, size_t length, ec_scalar &res) {
|
||||||
|
keccak(data, length, reinterpret_cast<hash &>(res));
|
||||||
|
sc_reduce32(&res);
|
||||||
|
}
|
||||||
|
|
||||||
|
void crypto_ops::generate_keys(public_key &pub, secret_key &sec) {
|
||||||
|
ge_p3 point;
|
||||||
|
random_scalar(sec);
|
||||||
|
ge_scalarmult_base(&point, &sec);
|
||||||
|
ge_p3_tobytes(&pub, &point);
|
||||||
|
}
|
||||||
|
|
||||||
|
bool crypto_ops::check_key(const public_key &key) {
|
||||||
|
ge_p3 point;
|
||||||
|
return ge_frombytes_vartime(&point, &key) == 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
struct s_comm {
|
||||||
|
hash h;
|
||||||
|
ec_point key;
|
||||||
|
ec_point comm;
|
||||||
|
};
|
||||||
|
|
||||||
|
void crypto_ops::generate_signature(const hash &message_hash, const public_key &pub, const secret_key &sec, signature &sig) {
|
||||||
|
ge_p3 tmp3;
|
||||||
|
ec_scalar k;
|
||||||
|
s_comm buf;
|
||||||
|
#if !defined(NDEBUG)
|
||||||
|
{
|
||||||
|
ge_p3 t;
|
||||||
|
public_key t2;
|
||||||
|
assert(sc_check(&sec) == 0);
|
||||||
|
ge_scalarmult_base(&t, &sec);
|
||||||
|
ge_p3_tobytes(&t2, &t);
|
||||||
|
assert(pub == t2);
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
buf.h = message_hash;
|
||||||
|
buf.key = pub;
|
||||||
|
random_scalar(k);
|
||||||
|
ge_scalarmult_base(&tmp3, &k);
|
||||||
|
ge_p3_tobytes(&buf.comm, &tmp3);
|
||||||
|
hash_to_scalar(&buf, sizeof(s_comm), sig.c);
|
||||||
|
sc_mulsub(&sig.r, &sig.c, &sec, &k);
|
||||||
|
}
|
||||||
|
|
||||||
|
bool crypto_ops::check_signature(const hash &message_hash, const public_key &pub, const signature &sig) {
|
||||||
|
ge_p2 tmp2;
|
||||||
|
ge_p3 tmp3;
|
||||||
|
ec_scalar c;
|
||||||
|
s_comm buf;
|
||||||
|
assert(check_key(pub));
|
||||||
|
buf.h = message_hash;
|
||||||
|
buf.key = pub;
|
||||||
|
if (ge_frombytes_vartime(&tmp3, &pub) != 0) {
|
||||||
|
abort();
|
||||||
|
}
|
||||||
|
if (sc_check(&sig.c) != 0 || sc_check(&sig.r) != 0) {
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
ge_double_scalarmult_base_vartime(&tmp2, &sig.c, &tmp3, &sig.r);
|
||||||
|
ge_tobytes(&buf.comm, &tmp2);
|
||||||
|
hash_to_scalar(&buf, sizeof(s_comm), c);
|
||||||
|
sc_sub(&c, &c, &sig.c);
|
||||||
|
return sc_isnonzero(&c) == 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void hash_to_ec(const public_key &key, ge_p3 &res) {
|
||||||
|
hash h;
|
||||||
|
ge_p2 point;
|
||||||
|
ge_p1p1 point2;
|
||||||
|
keccak(std::addressof(key), sizeof(public_key), h);
|
||||||
|
ge_fromfe_frombytes_vartime(&point, reinterpret_cast<const unsigned char *>(&h));
|
||||||
|
ge_mul8(&point2, &point);
|
||||||
|
ge_p1p1_to_p3(&res, &point2);
|
||||||
|
}
|
||||||
|
|
||||||
|
void crypto_ops::generate_key_image(const public_key &pub, const secret_key &sec, key_image &image) {
|
||||||
|
ge_p3 point;
|
||||||
|
ge_p2 point2;
|
||||||
|
assert(sc_check(&sec) == 0);
|
||||||
|
hash_to_ec(pub, point);
|
||||||
|
ge_scalarmult(&point2, &sec, &point);
|
||||||
|
ge_tobytes(&image, &point2);
|
||||||
|
}
|
||||||
|
|
||||||
|
struct rs_comm {
|
||||||
|
hash h;
|
||||||
|
struct {
|
||||||
|
ec_point a, b;
|
||||||
|
} ab[];
|
||||||
|
};
|
||||||
|
|
||||||
|
static inline size_t rs_comm_size(size_t pubs_count) {
|
||||||
|
return sizeof(rs_comm) + pubs_count * sizeof(rs_comm().ab[0]);
|
||||||
|
}
|
||||||
|
|
||||||
|
void crypto_ops::generate_ring_signature(const hash &message_hash, const key_image &image,
|
||||||
|
const public_key *const *pubs, size_t pubs_count,
|
||||||
|
const secret_key &sec, size_t sec_index,
|
||||||
|
signature *sig) {
|
||||||
|
size_t i;
|
||||||
|
ge_p3 image_unp;
|
||||||
|
ge_dsmp image_pre;
|
||||||
|
ec_scalar sum, k, h;
|
||||||
|
rs_comm *const buf = reinterpret_cast<rs_comm *>(alloca(rs_comm_size(pubs_count)));
|
||||||
|
assert(sec_index < pubs_count);
|
||||||
|
#if !defined(NDEBUG)
|
||||||
|
{
|
||||||
|
ge_p3 t;
|
||||||
|
public_key t2;
|
||||||
|
key_image t3;
|
||||||
|
assert(sc_check(&sec) == 0);
|
||||||
|
ge_scalarmult_base(&t, &sec);
|
||||||
|
ge_p3_tobytes(&t2, &t);
|
||||||
|
assert(*pubs[sec_index] == t2);
|
||||||
|
generate_key_image(*pubs[sec_index], sec, t3);
|
||||||
|
assert(image == t3);
|
||||||
|
for (i = 0; i < pubs_count; i++) {
|
||||||
|
assert(check_key(*pubs[i]));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
if (ge_frombytes_vartime(&image_unp, &image) != 0) {
|
||||||
|
abort();
|
||||||
|
}
|
||||||
|
ge_dsm_precomp(image_pre, &image_unp);
|
||||||
|
sc_0(&sum);
|
||||||
|
buf->h = message_hash;
|
||||||
|
for (i = 0; i < pubs_count; i++) {
|
||||||
|
ge_p2 tmp2;
|
||||||
|
ge_p3 tmp3;
|
||||||
|
if (i == sec_index) {
|
||||||
|
random_scalar(k);
|
||||||
|
ge_scalarmult_base(&tmp3, &k);
|
||||||
|
ge_p3_tobytes(&buf->ab[i].a, &tmp3);
|
||||||
|
hash_to_ec(*pubs[i], tmp3);
|
||||||
|
ge_scalarmult(&tmp2, &k, &tmp3);
|
||||||
|
ge_tobytes(&buf->ab[i].b, &tmp2);
|
||||||
|
} else {
|
||||||
|
random_scalar(sig[i].c);
|
||||||
|
random_scalar(sig[i].r);
|
||||||
|
if (ge_frombytes_vartime(&tmp3, &*pubs[i]) != 0) {
|
||||||
|
abort();
|
||||||
|
}
|
||||||
|
ge_double_scalarmult_base_vartime(&tmp2, &sig[i].c, &tmp3, &sig[i].r);
|
||||||
|
ge_tobytes(&buf->ab[i].a, &tmp2);
|
||||||
|
hash_to_ec(*pubs[i], tmp3);
|
||||||
|
ge_double_scalarmult_precomp_vartime(&tmp2, &sig[i].r, &tmp3, &sig[i].c, image_pre);
|
||||||
|
ge_tobytes(&buf->ab[i].b, &tmp2);
|
||||||
|
sc_add(&sum, &sum, &sig[i].c);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
hash_to_scalar(buf, rs_comm_size(pubs_count), h);
|
||||||
|
sc_sub(&sig[sec_index].c, &h, &sum);
|
||||||
|
sc_mulsub(&sig[sec_index].r, &sig[sec_index].c, &sec, &k);
|
||||||
|
}
|
||||||
|
|
||||||
|
bool crypto_ops::check_ring_signature(const hash &message_hash, const key_image &image,
|
||||||
|
const public_key *const *pubs, size_t pubs_count,
|
||||||
|
const signature *sig) {
|
||||||
|
size_t i;
|
||||||
|
ge_p3 image_unp;
|
||||||
|
ge_dsmp image_pre;
|
||||||
|
ec_scalar sum, h;
|
||||||
|
rs_comm *const buf = reinterpret_cast<rs_comm *>(alloca(rs_comm_size(pubs_count)));
|
||||||
|
#if !defined(NDEBUG)
|
||||||
|
for (i = 0; i < pubs_count; i++) {
|
||||||
|
assert(check_key(*pubs[i]));
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
if (ge_frombytes_vartime(&image_unp, &image) != 0) {
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
ge_dsm_precomp(image_pre, &image_unp);
|
||||||
|
sc_0(&sum);
|
||||||
|
buf->h = message_hash;
|
||||||
|
for (i = 0; i < pubs_count; i++) {
|
||||||
|
ge_p2 tmp2;
|
||||||
|
ge_p3 tmp3;
|
||||||
|
if (sc_check(&sig[i].c) != 0 || sc_check(&sig[i].r) != 0) {
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
if (ge_frombytes_vartime(&tmp3, &*pubs[i]) != 0) {
|
||||||
|
abort();
|
||||||
|
}
|
||||||
|
ge_double_scalarmult_base_vartime(&tmp2, &sig[i].c, &tmp3, &sig[i].r);
|
||||||
|
ge_tobytes(&buf->ab[i].a, &tmp2);
|
||||||
|
hash_to_ec(*pubs[i], tmp3);
|
||||||
|
ge_double_scalarmult_precomp_vartime(&tmp2, &sig[i].r, &tmp3, &sig[i].c, image_pre);
|
||||||
|
ge_tobytes(&buf->ab[i].b, &tmp2);
|
||||||
|
sc_add(&sum, &sum, &sig[i].c);
|
||||||
|
}
|
||||||
|
hash_to_scalar(buf, rs_comm_size(pubs_count), h);
|
||||||
|
sc_sub(&h, &h, &sum);
|
||||||
|
return sc_isnonzero(&h) == 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
166
src/crypto/crypto.h
Normal file
166
src/crypto/crypto.h
Normal file
|
|
@ -0,0 +1,166 @@
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include <cstddef>
|
||||||
|
#include <cstring>
|
||||||
|
|
||||||
|
namespace crypto {
|
||||||
|
|
||||||
|
#pragma pack(push, 1)
|
||||||
|
class hash {
|
||||||
|
char data[32];
|
||||||
|
};
|
||||||
|
|
||||||
|
class ec_point {
|
||||||
|
char data[32];
|
||||||
|
};
|
||||||
|
|
||||||
|
class ec_scalar {
|
||||||
|
char data[32];
|
||||||
|
};
|
||||||
|
|
||||||
|
class public_key: ec_point {
|
||||||
|
friend class crypto_ops;
|
||||||
|
};
|
||||||
|
|
||||||
|
class secret_key: ec_scalar {
|
||||||
|
friend class crypto_ops;
|
||||||
|
};
|
||||||
|
|
||||||
|
class key_image: ec_point {
|
||||||
|
friend class crypto_ops;
|
||||||
|
};
|
||||||
|
|
||||||
|
class signature {
|
||||||
|
ec_scalar c, r;
|
||||||
|
friend class crypto_ops;
|
||||||
|
};
|
||||||
|
#pragma pack(pop)
|
||||||
|
|
||||||
|
static_assert(sizeof(hash) == 32 && sizeof(ec_point) == 32 &&
|
||||||
|
sizeof(ec_scalar) == 32 && sizeof(public_key) == 32 &&
|
||||||
|
sizeof(secret_key) == 32 && sizeof(key_image) == 32 &&
|
||||||
|
sizeof(signature) == 64, "Invalid structure size");
|
||||||
|
|
||||||
|
extern "C" {
|
||||||
|
void keccak(const void *data, std::size_t length, char *hash);
|
||||||
|
}
|
||||||
|
|
||||||
|
inline void keccak(const void *data, std::size_t length, hash &hash) {
|
||||||
|
keccak(data, length, reinterpret_cast<char *>(&hash));
|
||||||
|
}
|
||||||
|
|
||||||
|
inline bool operator==(const hash &a, const hash &b) {
|
||||||
|
return std::memcmp(&a, &b, sizeof(struct hash)) == 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
inline bool operator==(const public_key &a, const public_key &b) {
|
||||||
|
return std::memcmp(&a, &b, sizeof(struct public_key)) == 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
inline bool operator==(const key_image &a, const key_image &b) {
|
||||||
|
return std::memcmp(&a, &b, sizeof(struct key_image)) == 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
class crypto_ops {
|
||||||
|
crypto_ops();
|
||||||
|
crypto_ops(const crypto_ops &);
|
||||||
|
void operator=(const crypto_ops &);
|
||||||
|
~crypto_ops();
|
||||||
|
|
||||||
|
static void generate_keys(public_key &, secret_key &);
|
||||||
|
friend void generate_keys(public_key &, secret_key &);
|
||||||
|
static bool check_key(const public_key &);
|
||||||
|
friend bool check_key(const public_key &);
|
||||||
|
static void generate_signature(const hash &, const public_key &, const secret_key &, signature &);
|
||||||
|
friend void generate_signature(const hash &, const public_key &, const secret_key &, signature &);
|
||||||
|
static bool check_signature(const hash &, const public_key &, const signature &);
|
||||||
|
friend bool check_signature(const hash &, const public_key &, const signature &);
|
||||||
|
static void generate_key_image(const public_key &, const secret_key &, key_image &);
|
||||||
|
friend void generate_key_image(const public_key &, const secret_key &, key_image &);
|
||||||
|
static void generate_ring_signature(const hash &, const key_image &,
|
||||||
|
const public_key *const *, std::size_t, const secret_key &, std::size_t, signature *);
|
||||||
|
friend void generate_ring_signature(const hash &, const key_image &,
|
||||||
|
const public_key *const *, std::size_t, const secret_key &, std::size_t, signature *);
|
||||||
|
static bool check_ring_signature(const hash &, const key_image &,
|
||||||
|
const public_key *const *, std::size_t, const signature *);
|
||||||
|
friend bool check_ring_signature(const hash &, const key_image &,
|
||||||
|
const public_key *const *, std::size_t, const signature *);
|
||||||
|
};
|
||||||
|
|
||||||
|
/* Generate a new key pair.
|
||||||
|
* pub: a newly generated public key.
|
||||||
|
* sec: a newly generated secret key.
|
||||||
|
*/
|
||||||
|
inline void generate_keys(public_key &pub, secret_key &sec) {
|
||||||
|
crypto_ops::generate_keys(pub, sec);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Check a public key.
|
||||||
|
* key: a key to check.
|
||||||
|
* returns: true if the key is valid, false otherwise.
|
||||||
|
*/
|
||||||
|
inline bool check_key(const public_key &key) {
|
||||||
|
return crypto_ops::check_key(key);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Sign a message.
|
||||||
|
* message_hash: hash of a message.
|
||||||
|
* pub: public key used for signing. Assumed to be valid.
|
||||||
|
* sec: secret key used for signing. Assumed to correspond to pub.
|
||||||
|
* sig: the resulting signature.
|
||||||
|
*/
|
||||||
|
inline void generate_signature(const hash &message_hash, const public_key &pub, const secret_key &sec, signature &sig) {
|
||||||
|
crypto_ops::generate_signature(message_hash, pub, sec, sig);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Verify a signature.
|
||||||
|
* message_hash: hash of a message.
|
||||||
|
* pub: public key used for signing. Assumed to be valid, use check_key to check it first.
|
||||||
|
* sig: a signature.
|
||||||
|
* returns: true if the signature is valid, false otherwise.
|
||||||
|
*/
|
||||||
|
inline bool check_signature(const hash &message_hash, const public_key &pub, const signature &sig) {
|
||||||
|
return crypto_ops::check_signature(message_hash, pub, sig);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Generate the image of a key.
|
||||||
|
* pub: public key used for signing. Assumed to be valid.
|
||||||
|
* sec: secret key used for signing. Assumed to correspond to pub.
|
||||||
|
* image: the resulting key image.
|
||||||
|
*/
|
||||||
|
inline void generate_key_image(const public_key &pub, const secret_key &sec, key_image &image) {
|
||||||
|
crypto_ops::generate_key_image(pub, sec, image);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Sign a message using linkable ring signature.
|
||||||
|
* message_hash: hash of a message.
|
||||||
|
* image: image of the key used for signing. Use generate_key_image to create it. Assumed to correspond to the key used for signing.
|
||||||
|
* pubs: pointer to an array of pointers to public keys of a ring. All keys are assumed to be valid, use check_key to check them first.
|
||||||
|
* pubs_count: number of keys in a ring.
|
||||||
|
* sec: secret key used for signing.
|
||||||
|
* sec_index: index of the key used for signing in pubs. It is assumed that 0 <= sec_index < pubs_count and that sec corresponds to *pubs[sec_index].
|
||||||
|
* sig: the resulting signature (occupies pubs_count elements). To verify it, image of the key is also necessary.
|
||||||
|
*/
|
||||||
|
inline void generate_ring_signature(const hash &message_hash, const key_image &image,
|
||||||
|
const public_key *const *pubs, std::size_t pubs_count,
|
||||||
|
const secret_key &sec, std::size_t sec_index,
|
||||||
|
signature *sig) {
|
||||||
|
crypto_ops::generate_ring_signature(message_hash, image, pubs, pubs_count, sec, sec_index, sig);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Verify a linkable ring signature.
|
||||||
|
* message_hash: hash of a message.
|
||||||
|
* image: image of the key used for signing.
|
||||||
|
* pubs: pointer to an array of pointers to public keys of a ring. All keys are assumed to be valid, use check_key to check them first.
|
||||||
|
* pubs_count: number of keys in a ring.
|
||||||
|
* sig: a signature (occupies pubs_count elements).
|
||||||
|
* returns: true if the signature is valid, false otherwise.
|
||||||
|
*/
|
||||||
|
inline bool check_ring_signature(const hash &message_hash, const key_image &image,
|
||||||
|
const public_key *const *pubs, std::size_t pubs_count,
|
||||||
|
const signature *sig) {
|
||||||
|
return crypto_ops::check_ring_signature(message_hash, image, pubs, pubs_count, sig);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* To check whether two signatures are linked, compare their key images. */
|
||||||
|
}
|
||||||
42
src/crypto/example.cpp
Normal file
42
src/crypto/example.cpp
Normal file
|
|
@ -0,0 +1,42 @@
|
||||||
|
#include <assert.h>
|
||||||
|
|
||||||
|
#include "crypto.h"
|
||||||
|
#include "random.h"
|
||||||
|
|
||||||
|
using namespace crypto;
|
||||||
|
|
||||||
|
int main(int argc, char *argv[]) {
|
||||||
|
char message[10];
|
||||||
|
hash mh;
|
||||||
|
public_key pk1, pk2;
|
||||||
|
secret_key sk1, sk2;
|
||||||
|
key_image ki;
|
||||||
|
public_key *ppk[2];
|
||||||
|
signature sig[2];
|
||||||
|
bool res;
|
||||||
|
/* Call this before using functions that depend on randomness. */
|
||||||
|
init_random();
|
||||||
|
/* Generate a random message. */
|
||||||
|
generate_random_bytes(sizeof message, message);
|
||||||
|
/* Find its hash */
|
||||||
|
keccak(message, sizeof message, mh);
|
||||||
|
/* Generate some keys */
|
||||||
|
generate_keys(pk1, sk1);
|
||||||
|
generate_keys(pk2, sk2);
|
||||||
|
/* Sign the message */
|
||||||
|
generate_signature(mh, pk1, sk1, sig[0]);
|
||||||
|
/* Check the signature */
|
||||||
|
res = check_signature(mh, pk1, sig[0]);
|
||||||
|
assert(res);
|
||||||
|
/* Sign the message using ring signature */
|
||||||
|
/* First, generate a key image */
|
||||||
|
generate_key_image(pk2, sk2, ki);
|
||||||
|
/* Then, generate the signature */
|
||||||
|
ppk[0] = &pk1;
|
||||||
|
ppk[1] = &pk2;
|
||||||
|
generate_ring_signature(mh, ki, ppk, 2, sk2, 1, sig);
|
||||||
|
/* Check it */
|
||||||
|
res = check_ring_signature(mh, ki, ppk, 2, sig);
|
||||||
|
assert(res);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
82
src/crypto/hash.c
Normal file
82
src/crypto/hash.c
Normal file
|
|
@ -0,0 +1,82 @@
|
||||||
|
#include <stddef.h>
|
||||||
|
#include <stdint.h>
|
||||||
|
#include <string.h>
|
||||||
|
|
||||||
|
#include "int-util.h"
|
||||||
|
#include "hash.h"
|
||||||
|
|
||||||
|
static const uint64_t round_constants[] = {
|
||||||
|
0x0000000000000001, 0x0000000000008082, 0x800000000000808a, 0x8000000080008000,
|
||||||
|
0x000000000000808b, 0x0000000080000001, 0x8000000080008081, 0x8000000000008009,
|
||||||
|
0x000000000000008a, 0x0000000000000088, 0x0000000080008009, 0x000000008000000a,
|
||||||
|
0x000000008000808b, 0x800000000000008b, 0x8000000000008089, 0x8000000000008003,
|
||||||
|
0x8000000000008002, 0x8000000000000080, 0x000000000000800a, 0x800000008000000a,
|
||||||
|
0x8000000080008081, 0x8000000000008080, 0x0000000080000001, 0x8000000080008008
|
||||||
|
};
|
||||||
|
|
||||||
|
static const uint8_t rho_offsets[] = {
|
||||||
|
0, 1, 62, 28, 27,
|
||||||
|
36, 44, 6, 55, 20,
|
||||||
|
3, 10, 43, 25, 39,
|
||||||
|
41, 45, 15, 21, 8,
|
||||||
|
18, 2, 61, 56, 14
|
||||||
|
};
|
||||||
|
|
||||||
|
static void keccak_round(uint64_t *state, unsigned int i) {
|
||||||
|
unsigned int j, k;
|
||||||
|
uint64_t tmp[25];
|
||||||
|
for(j = 0; j < 5; j++) {
|
||||||
|
tmp[j] = state[j] ^ state[j + 5] ^ state[j + 10] ^ state[j + 15] ^ state[j + 20];
|
||||||
|
}
|
||||||
|
for(j = 0; j < 5; j++) {
|
||||||
|
uint64_t t = rol64(tmp[(j + 1) % 5], 1) ^ tmp[(j + 4) % 5];
|
||||||
|
state[j] ^= t;
|
||||||
|
state[j + 5] ^= t;
|
||||||
|
state[j + 10] ^= t;
|
||||||
|
state[j + 15] ^= t;
|
||||||
|
state[j + 20] ^= t;
|
||||||
|
}
|
||||||
|
for(j = 0; j < 25; j++) {
|
||||||
|
state[j] = rol64(state[j], rho_offsets[j]);
|
||||||
|
}
|
||||||
|
#define index(x, y) (((x) % 5) + 5 * ((y) % 5))
|
||||||
|
for(j = 0; j < 5; j++) {
|
||||||
|
for(k = 0; k < 5; k++) {
|
||||||
|
tmp[index(0 * k + 1 * j, 2 * k + 3 * j)] = state[index(k, j)];
|
||||||
|
}
|
||||||
|
}
|
||||||
|
for(j = 0; j < 5; j++) {
|
||||||
|
for(k = 0; k < 5; k++) {
|
||||||
|
state[index(k, j)] = tmp[index(k, j)] ^ ((~tmp[index(k + 1, j)]) & tmp[index(k + 2, j)]);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#undef index
|
||||||
|
state[0] ^= round_constants[i];
|
||||||
|
}
|
||||||
|
|
||||||
|
void keccak_permutation(struct keccak_state *state) {
|
||||||
|
unsigned int i;
|
||||||
|
mem_inplace_swap64le(&state, 25);
|
||||||
|
for (i = 0; i < 24; i++) {
|
||||||
|
keccak_round(state->w, i);
|
||||||
|
}
|
||||||
|
mem_inplace_swap64le(&state, 25);
|
||||||
|
}
|
||||||
|
|
||||||
|
void keccak(const void *data, size_t length, char *hash) {
|
||||||
|
struct keccak_state state;
|
||||||
|
const void *limit = cpadd(data, length);
|
||||||
|
size_t i;
|
||||||
|
memset(&state, 0, sizeof(struct keccak_state));
|
||||||
|
for (i = 0; data != limit; ++data) {
|
||||||
|
state.b[i] ^= *(char *) data;
|
||||||
|
if (++i == 136) {
|
||||||
|
keccak_permutation(&state);
|
||||||
|
i = 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
state.b[i] ^= 1;
|
||||||
|
state.b[135] ^= 0x80;
|
||||||
|
keccak_permutation(&state);
|
||||||
|
memcpy(hash, &state, 32);
|
||||||
|
}
|
||||||
40
src/crypto/hash.h
Normal file
40
src/crypto/hash.h
Normal file
|
|
@ -0,0 +1,40 @@
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include <assert.h>
|
||||||
|
#include <stdbool.h>
|
||||||
|
#include <stddef.h>
|
||||||
|
#include <stdint.h>
|
||||||
|
|
||||||
|
#include "int-util.h"
|
||||||
|
|
||||||
|
static inline void *padd(void *p, size_t i) {
|
||||||
|
return (char *) p + i;
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline const void *cpadd(const void *p, size_t i) {
|
||||||
|
return (const char *) p + i;
|
||||||
|
}
|
||||||
|
|
||||||
|
static_assert(sizeof(size_t) == 4 || sizeof(size_t) == 8, "size_t must be 4 or 8 bytes long");
|
||||||
|
static inline void place_length(uint8_t *buffer, size_t bufsize, size_t length) {
|
||||||
|
if (sizeof(size_t) == 4) {
|
||||||
|
*(uint32_t *) padd(buffer, bufsize - 4) = swap32be(length);
|
||||||
|
} else {
|
||||||
|
*(uint64_t *) padd(buffer, bufsize - 8) = swap64be(length);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
struct keccak_state {
|
||||||
|
union {
|
||||||
|
uint8_t b[200];
|
||||||
|
uint64_t w[25];
|
||||||
|
};
|
||||||
|
};
|
||||||
|
|
||||||
|
enum {
|
||||||
|
HASH_SIZE = 32,
|
||||||
|
HASH_DATA_AREA = 136
|
||||||
|
};
|
||||||
|
|
||||||
|
void keccak(const void *data, size_t length, char *hash);
|
||||||
|
void keccak_permutation(struct keccak_state *state);
|
||||||
121
src/crypto/int-util.h
Normal file
121
src/crypto/int-util.h
Normal file
|
|
@ -0,0 +1,121 @@
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include <stdint.h>
|
||||||
|
#include <string.h>
|
||||||
|
#include <sys/param.h>
|
||||||
|
|
||||||
|
static inline uint32_t rol32(uint32_t x, int r) {
|
||||||
|
return (x << (r & 31)) | (x >> (-r & 31));
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline uint64_t rol64(uint64_t x, int r) {
|
||||||
|
return (x << (r & 63)) | (x >> (-r & 63));
|
||||||
|
}
|
||||||
|
|
||||||
|
#define IDENT32(x) ((uint32_t) (x))
|
||||||
|
#define IDENT64(x) ((uint64_t) (x))
|
||||||
|
|
||||||
|
#define SWAP32(x) ((((uint32_t) (x) & 0x000000ff) << 24) | \
|
||||||
|
(((uint32_t) (x) & 0x0000ff00) << 8) | \
|
||||||
|
(((uint32_t) (x) & 0x00ff0000) >> 8) | \
|
||||||
|
(((uint32_t) (x) & 0xff000000) >> 24))
|
||||||
|
#define SWAP64(x) ((((uint64_t) (x) & 0x00000000000000ff) << 56) | \
|
||||||
|
(((uint64_t) (x) & 0x000000000000ff00) << 40) | \
|
||||||
|
(((uint64_t) (x) & 0x0000000000ff0000) << 24) | \
|
||||||
|
(((uint64_t) (x) & 0x00000000ff000000) << 8) | \
|
||||||
|
(((uint64_t) (x) & 0x000000ff00000000) >> 8) | \
|
||||||
|
(((uint64_t) (x) & 0x0000ff0000000000) >> 24) | \
|
||||||
|
(((uint64_t) (x) & 0x00ff000000000000) >> 40) | \
|
||||||
|
(((uint64_t) (x) & 0xff00000000000000) >> 56))
|
||||||
|
|
||||||
|
static inline uint32_t ident32(uint32_t x) { return x; }
|
||||||
|
static inline uint64_t ident64(uint64_t x) { return x; }
|
||||||
|
|
||||||
|
static inline uint32_t swap32(uint32_t x) {
|
||||||
|
x = ((x & 0x00ff00ff) << 8) | ((x & 0xff00ff00) >> 8);
|
||||||
|
return (x << 16) | (x >> 16);
|
||||||
|
}
|
||||||
|
static inline uint64_t swap64(uint64_t x) {
|
||||||
|
x = ((x & 0x00ff00ff00ff00ff) << 8) | ((x & 0xff00ff00ff00ff00) >> 8);
|
||||||
|
x = ((x & 0x0000ffff0000ffff) << 16) | ((x & 0xffff0000ffff0000) >> 16);
|
||||||
|
return (x << 32) | (x >> 32);
|
||||||
|
}
|
||||||
|
|
||||||
|
#if defined(__GNUC__)
|
||||||
|
#define UNUSED __attribute__((unused))
|
||||||
|
#else
|
||||||
|
#define UNUSED
|
||||||
|
#endif
|
||||||
|
static inline void mem_inplace_ident(void *mem UNUSED, size_t n UNUSED) { }
|
||||||
|
#undef UNUSED
|
||||||
|
|
||||||
|
static inline void mem_inplace_swap32(void *mem, size_t n) {
|
||||||
|
size_t i;
|
||||||
|
for (i = 0; i < n; i++) {
|
||||||
|
((uint32_t *) mem)[i] = swap32(((const uint32_t *) mem)[i]);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
static inline void mem_inplace_swap64(void *mem, size_t n) {
|
||||||
|
size_t i;
|
||||||
|
for (i = 0; i < n; i++) {
|
||||||
|
((uint64_t *) mem)[i] = swap64(((const uint64_t *) mem)[i]);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void memcpy_ident32(void *dst, const void *src, size_t n) {
|
||||||
|
memcpy(dst, src, 4 * n);
|
||||||
|
}
|
||||||
|
static inline void memcpy_ident64(void *dst, const void *src, size_t n) {
|
||||||
|
memcpy(dst, src, 8 * n);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void memcpy_swap32(void *dst, const void *src, size_t n) {
|
||||||
|
size_t i;
|
||||||
|
for (i = 0; i < n; i++) {
|
||||||
|
((uint32_t *) dst)[i] = swap32(((const uint32_t *) src)[i]);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
static inline void memcpy_swap64(void *dst, const void *src, size_t n) {
|
||||||
|
size_t i;
|
||||||
|
for (i = 0; i < n; i++) {
|
||||||
|
((uint64_t *) dst)[i] = swap64(((const uint64_t *) src)[i]);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#if BYTE_ORDER == LITTLE_ENDIAN
|
||||||
|
#define SWAP32LE IDENT32
|
||||||
|
#define SWAP32BE SWAP32
|
||||||
|
#define swap32le ident32
|
||||||
|
#define swap32be swap32
|
||||||
|
#define mem_inplace_swap32le mem_inplace_ident
|
||||||
|
#define mem_inplace_swap32be mem_inplace_swap32
|
||||||
|
#define memcpy_swap32le memcpy_ident32
|
||||||
|
#define memcpy_swap32be memcpy_swap32
|
||||||
|
#define SWAP64LE IDENT64
|
||||||
|
#define SWAP64BE SWAP64
|
||||||
|
#define swap64le ident64
|
||||||
|
#define swap64be swap64
|
||||||
|
#define mem_inplace_swap64le mem_inplace_ident
|
||||||
|
#define mem_inplace_swap64be mem_inplace_swap64
|
||||||
|
#define memcpy_swap64le memcpy_ident64
|
||||||
|
#define memcpy_swap64be memcpy_swap64
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if BYTE_ORDER == BIG_ENDIAN
|
||||||
|
#define SWAP32BE IDENT32
|
||||||
|
#define SWAP32LE SWAP32
|
||||||
|
#define swap32be ident32
|
||||||
|
#define swap32le swap32
|
||||||
|
#define mem_inplace_swap32be mem_inplace_ident
|
||||||
|
#define mem_inplace_swap32le mem_inplace_swap32
|
||||||
|
#define memcpy_swap32be memcpy_ident32
|
||||||
|
#define memcpy_swap32le memcpy_swap32
|
||||||
|
#define SWAP64BE IDENT64
|
||||||
|
#define SWAP64LE SWAP64
|
||||||
|
#define swap64be ident64
|
||||||
|
#define swap64le swap64
|
||||||
|
#define mem_inplace_swap64be mem_inplace_ident
|
||||||
|
#define mem_inplace_swap64le mem_inplace_swap64
|
||||||
|
#define memcpy_swap64be memcpy_ident64
|
||||||
|
#define memcpy_swap64le memcpy_swap64
|
||||||
|
#endif
|
||||||
62
src/crypto/random.c
Normal file
62
src/crypto/random.c
Normal file
|
|
@ -0,0 +1,62 @@
|
||||||
|
#include <assert.h>
|
||||||
|
#include <err.h>
|
||||||
|
#include <errno.h>
|
||||||
|
#include <fcntl.h>
|
||||||
|
#include <stddef.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <string.h>
|
||||||
|
#include <sys/stat.h>
|
||||||
|
#include <sys/types.h>
|
||||||
|
#include <unistd.h>
|
||||||
|
|
||||||
|
#include "hash.h"
|
||||||
|
#include "random.h"
|
||||||
|
|
||||||
|
static void generate_system_random_bytes(size_t n, void *result) {
|
||||||
|
int fd;
|
||||||
|
if ((fd = open("/dev/urandom", O_RDONLY | O_NOCTTY | O_CLOEXEC)) < 0) {
|
||||||
|
err(EXIT_FAILURE, "open /dev/urandom");
|
||||||
|
}
|
||||||
|
for (;;) {
|
||||||
|
ssize_t res = read(fd, result, n);
|
||||||
|
if ((size_t) res == n) {
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
if (res < 0) {
|
||||||
|
if (errno != EINTR) {
|
||||||
|
err(EXIT_FAILURE, "read /dev/urandom");
|
||||||
|
}
|
||||||
|
} else if (res == 0) {
|
||||||
|
errx(EXIT_FAILURE, "read /dev/urandom: end of file");
|
||||||
|
} else {
|
||||||
|
result = padd(result, (size_t) res);
|
||||||
|
n -= (size_t) res;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (close(fd) < 0) {
|
||||||
|
err(EXIT_FAILURE, "close /dev/urandom");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static struct keccak_state state;
|
||||||
|
|
||||||
|
void init_random(void) {
|
||||||
|
generate_system_random_bytes(32, &state);
|
||||||
|
}
|
||||||
|
|
||||||
|
void generate_random_bytes(size_t n, void *result) {
|
||||||
|
if (n == 0) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
for (;;) {
|
||||||
|
keccak_permutation(&state);
|
||||||
|
if (n <= HASH_DATA_AREA) {
|
||||||
|
memcpy(result, &state, n);
|
||||||
|
return;
|
||||||
|
} else {
|
||||||
|
memcpy(result, &state, HASH_DATA_AREA);
|
||||||
|
result = padd(result, HASH_DATA_AREA);
|
||||||
|
n -= HASH_DATA_AREA;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
19
src/crypto/random.h
Normal file
19
src/crypto/random.h
Normal file
|
|
@ -0,0 +1,19 @@
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include <stddef.h>
|
||||||
|
|
||||||
|
#if defined(__cplusplus)
|
||||||
|
#include <type_traits>
|
||||||
|
|
||||||
|
namespace crypto {
|
||||||
|
|
||||||
|
extern "C" {
|
||||||
|
#endif
|
||||||
|
|
||||||
|
void init_random(void);
|
||||||
|
void generate_random_bytes(size_t n, void *result);
|
||||||
|
|
||||||
|
#if defined(__cplusplus)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#endif
|
||||||
Loading…
Reference in a new issue