Difference between revisions of "Random Numbers"
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− | SubSpace uses random numbers primarily in its encryption, generating [[prize]]s, and controlling [[door]]s. | + | [[SubSpace]] uses random numbers primarily in its encryption, generating [[prize]]s, and controlling [[door]]s. |
− | The following code is used in generating the encrypted | + | The following code is used in generating the encrypted keystream, prizes, and doors: |
<pre> | <pre> | ||
DWORD SS_RNG(DWORD seed) | DWORD SS_RNG(DWORD seed) |
Revision as of 23:15, 24 March 2005
SubSpace uses random numbers primarily in its encryption, generating prizes, and controlling doors.
The following code is used in generating the encrypted keystream, prizes, and doors:
DWORD SS_RNG(DWORD seed) { DWORD nseed, temp; temp = (MULT_C * (unsigned __int64)seed) >> 32; temp = (temp >> 16) + (temp >> 31); //aka the sign bit nseed = (seed % DIV_C) * 16807; nseed -= (temp * 2836); nseed += 123; if (!nseed || nseed > 0x7FFFFFFF) nseed += 0x7FFFFFFF; return nseed; }