Wie erzeugt man einen Pearson Hash in PHP?

Question

Also ich möchte wissen, ob es eine Möglichkeit gibt, einen Pearson-Hash auf PHP zu generieren, da dieser Hash-Algorithmus nicht auf ihm registriert ist.

Danke.

Answer 1

Dies ist eine einfache C++ Code, können Sie eine PHP-Version davon implementieren:

void Pearson16(const unsigned char *x, size_t len, char *hex, size_t hexlen) 
{ 
    size_t i; 
    size_t j; 
    unsigned char h; 
    unsigned char hh[8]; 
    static const unsigned char T[256] = { 
     // 0-255 shuffled in any (random) order suffices 
     98, 6, 85,150, 36, 23,112,164,135,207,169, 5, 26, 64,165,219, // 1 
     61, 20, 68, 89,130, 63, 52,102, 24,229,132,245, 80,216,195,115, // 2 
     90,168,156,203,177,120, 2,190,188, 7,100,185,174,243,162, 10, // 3 
     237, 18,253,225, 8,208,172,244,255,126,101, 79,145,235,228,121, // 4 
     123,251, 67,250,161, 0,107, 97,241,111,181, 82,249, 33, 69, 55, // 5 
     59,153, 29, 9,213,167, 84, 93, 30, 46, 94, 75,151,114, 73,222, // 6 
     197, 96,210, 45, 16,227,248,202, 51,152,252,125, 81,206,215,186, // 7 
     39,158,178,187,131,136, 1, 49, 50, 17,141, 91, 47,129, 60, 99, // 8 
     154, 35, 86,171,105, 34, 38,200,147, 58, 77,118,173,246, 76,254, // 9 
     133,232,196,144,198,124, 53, 4,108, 74,223,234,134,230,157,139, // 10 
     189,205,199,128,176, 19,211,236,127,192,231, 70,233, 88,146, 44, // 11 
     183,201, 22, 83, 13,214,116,109,159, 32, 95,226,140,220, 57, 12, // 12 
     221, 31,209,182,143, 92,149,184,148, 62,113, 65, 37, 27,106,166, // 13 
     3, 14,204, 72, 21, 41, 56, 66, 28,193, 40,217, 25, 54,179,117, // 14 
     238, 87,240,155,180,170,242,212,191,163, 78,218,137,194,175,110, // 15 
     43,119,224, 71,122,142, 42,160,104, 48,247,103, 15, 11,138,239 // 16 
    }; 

    for (j = 0; j < 8; ++j) { 
     h = T[(x[0] + j) % 256]; 
     for (i = 1; i < len; ++i) { 
      h = T[h^x[i]]; 
     } 
     hh[j] = h; 
    } 

    snprintf(hex, hexlen, "%02X%02X%02X%02X%02X%02X%02X%02X", 
     hh[0], hh[1], hh[2], hh[3], 
     hh[4], hh[5], hh[6], hh[7]); 
} 

Hoffe, es hilft!