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/*++
Copyright (C) 1999-2001 Microsoft Corporation
Module Name:
Abstract:
History:
--*/
#include <windows.h>
#include <stdio.h>
DWORD g_aData[] = { 787298196, 389638077, 341926582, 774741813, 93260522, 163092950, 1990849060, 347345683, 877836976, 1572821297, 648067937, 2085921890, 185524536, 456812682, 0, 757935405, 0, 757935405, 0, 757935405, 0, 757935405, 137293882, 647272253, 926837903, 691288938, 2110722223, 753493867, 1158850856, 231595791, 891966499, 1864871608, 369617977, 1136871300, 1171009120, 869085779, 1450103344, 1086868440, 1961959123, 1059058093, 1935842809, 802291789, 67991817, 981707677, 1259917513, 326492489, 1576246720, 1771986875, 0, 757935405, 0, 757935405, 0, 757935405, 0, 757935405, 923580586, 196610576, 422396857, 1268611680, 612189215, 1446180055, 273627650, 1037431929, 1582243822, 530725520, 802440210, 1390869936, 1406698670, 882125910, 1438991232, 560627627, 519127596, 452431388, 247297193, 1875650637, 1095739709, 1333936659, 488415888, 58615958, 2113012991, 1738890481, 1232434023, 576968899, 408785170, 2004132969, 1072488881, 1949997283, 686278613, 103342821, 1802391228, 1692614641, 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144460909, 1948818884, 1383042119, 1106605766, 249692350, 1654887685, 799220325, 266335729, 1064242885, 935948902, 1729316369, 1904596453, 602576498, 1393926903, 1868790805, 999121367, 1482517664, 1106424117, 1619863692, 475802887, 1065758854, 1578128863, 1073664523, 1902406644, 1490177493, 189884687, 370196266, 2067425084, 1295173952, 719320527, 1966542348, 1402266308, 627647129, 321290752, 563241132, 1055096585, 1304486941, 923108668, 487059104, 344621029, 714650744, 1350621712, 1393479868, 496766707, 337566155, 1398161423, 1065556157, 1637951588, 1664109644, 1897844973, 39233871, 738269405, 2096910723, 92694589, 236509435, 1190806955, 761856969, 338757023, 812768206, 1849559800, 854377249, 1404336425, 1207126318, 1662034928, 342925931, 658926774, 426922867, 1729186771, 1061508106, 563502611, 1697133477, 840094768, 1210950740, 1835414483, 769859538, 747821704, 1438378136, 2126687472, 278562278, 1238007326, 59100431, 1897844973, 39233871, 450014323, 1915307751, 1426814736, 286322278, 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#define NUM_DATA (sizeof(g_aData)/sizeof(DWORD))
#define LARGE_PRIME 2147483659
DWORD HashKey(char* szKey){ DWORD n = 1; while(*szKey) { n = n * (2*(DWORD)*szKey + 1); szKey++; } return n % LARGE_PRIME;}
LPSTR GetText(LPSTR szKey){ LPSTR szResult = new char[NUM_DATA*2+4]; DWORD* pdwResult = (DWORD*)szResult;
DWORD dwKey = HashKey(szKey); for(int i = 0; i < NUM_DATA; i+=2) { __int64 i64A = g_aData[i]; __int64 i64B = g_aData[i+1]; __int64 i64Res = (i64A*dwKey + i64B) % LARGE_PRIME; *pdwResult = (DWORD)i64Res; pdwResult++; } *pdwResult = 0;
return szResult;}
BOOL CheckText(char* szText){ while(*szText) { if (*szText < 8 || *szText > 127) return FALSE; szText++; } return TRUE;}
void main(){ printf("Key: "); char szKey[100]; scanf("%s", szKey); LPSTR szResult = GetText(szKey); if(!CheckText(szResult)) printf("INVALID!\n"); else printf("%s\n", szResult);}
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