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Merge pull request #4089 from acemod/dogtagSSN

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Improve SSN hash
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SilentSpike 2016-07-15 22:59:41 +01:00 committed by GitHub
commit fed71b00e8
1 changed files with 13 additions and 10 deletions
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23
addons/dogtags/functions/fnc_ssn.sqf
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@ -8,24 +8,27 @@
* Return Value:
* A random three/two/four format social security number <STRING>
*
* Example:
* ["AAA"] call ace_dogtags_fnc_ssn
*
* Public: No
*/
#include "script_component.hpp"
params ["_name"];
private _length = count _name;
private _chars = toArray _name;
_chars pushBack _length;
_length = _length + 1;
// For short names, reuse characters
if (_length < 9) then {
// Iterates every second character, swapping odd/even with each loop
for [{_i = 0},{_i < 2*(9 - _length)},{_i = _i + 2}] do {
_chars pushBack (_chars select floor((_i + (_i/_length % 2)) % _length));
};
};
private _remainder = 0;
private _nums = [0,0,0,0,0,0,0,0,0];
// Offset array slice for long names to make generation more unique
private _slice = [0, _length % 9] select (_length > 9);
private _nums = (_chars select [_slice, 9]) apply { _x % 10 };
for "_index" from 0 to (8 max _length) do {
private _inputChar = _chars select (_index % _length);
_nums set [(_index % 9), ((_nums select (_index % 9)) + _inputChar + _remainder) % 10];
_remainder = (_inputChar + _remainder) % 256;
};
([_nums select [0,3],_nums select [3,2], _nums select [5,4]] apply { _x joinString "" }) joinString "-"