PANTECH NCK Calculator : tool tính code NCK cho máy Pantech

Tool này hỗ trợ tạo mã NCK cho các models Pantech sau:

Bổ sung luôn mã nguồn Delphi cho bác nào đam mê lập trình:

Mã:

unit Pantech;

interface

uses SysUtils;

procedure Calculate_P1(IMEI: String; var StrNCK: String);

implementation

const
  LEN = 607;
  TAP = 273;
  MASK = $7FFFFFFF;
  A = 48271;
  M = 2147483647;
  Q = 44488;
  R = 3399;

var
  Table_00: Array [0..9] of Byte = (0, 6, 1, 8, 7, 5, 3, 2, 9, 4);
  Table_01: Array [0..9] of Byte = (0, 2, 6, 6, 9, 5, 1, 4, 3, 8);
  Table_10: Array [0..9] of Byte = (0, 4, 9, 2, 3, 5, 7, 8, 1, 6);
  Table_11: Array [0..9] of Byte = (0, 8, 3, 4, 1, 5, 9, 6, 7, 2);
  Table_2: Array [0..99] of Byte = ($11, $5D, $5B, $5A, $58, $57, 5, 7, 9, $12,
                                    1, $45, $51, $50, $4E, $18, $16, $13, $1F,
                                    $64, 2, $1E, $3C, $24, $23, $3F, $43, $2A,
                                    $47, $63, $C, $1D, $44, $32, $35, $38, $2B,
                                    $21, $48, $59, $F, $1C, $27, $37, $2C, $31,
                                    $36, $3E, $49, $56, $55, $1B, $28, $2D, $3A,
                                    $33, $30, $3D, $4A, $10, $5F, $4B, $25, $34,
                                    $2F, $2E, $39, $40, $1A, 6, $61, $4C, $3B,
                                    $41, $42, $26, $22, $29, $19, 4, $62, $46,
                                    $14, $15, $17, $4D, $4F, $52, $20, 3, $53,
                                    8, $A, $B, $D, $E, $60, $5E, $5C, $54);
  coda: Array [0..7] of Char;
  rng_vec : array [0..LEN - 1] of Cardinal;
  rng_tap : Cardinal;
  rng_feed: Cardinal;

function isrand(_seed: Integer): Cardinal;
var
  seed,lo,hi,x: Cardinal;
  i: Integer;
begin
  seed := _seed;
  seed := seed mod M;
  if seed < 0 then Inc(seed,M);
  if seed = 0 then seed := 89482311;
  x := seed;
  i := -20;
  while i < LEN do
  begin
    hi := x div Q;
    lo := x mod Q;
    x := A*lo - R*hi;
    if x < 0 then Inc(x, M);
    if i >= 0 then rng_vec := x;
    Inc(i);
  end;
  Result:= x;
end;

function lrand: Integer;
begin
  Dec(rng_tap);
  Dec(rng_feed);
  Result := (rng_vec[rng_feed] + rng_vec[rng_tap]) and MASK;
  rng_vec[rng_feed] := Result;
end;

procedure Calculate_P1(IMEI: String; var StrNCK: String);
var
  i, v3, v4, v5, v6, v8, v9, v10, v11, v12, v14: Integer;
  v16: Array [0..7] of Byte;
  v17: Array [0..7] of Byte;
begin
  v4 := StrToInt(Copy(IMEI, 9, 6)) + 313944551;
  for i := 0 to 5 do
  begin
    v6 := v4 mod 10;
    v4 := v4 div 10;
    v17[5-i] := v6;
  end;
  v8 := (13 * v17[5] + 5 * v17[4] + 3 * v17[3] + 1553 * v17[2] + 23 * v17[1] + 177 * v17[0]) mod 99999;
  for i := 7 downto 6 do
  begin
    v10 := v8 mod 10;
    v8 := v8 div 10;
    v17 := v10;
  end;
  v16[0] := Table_00[v17[0]];
  v16[1] := Table_01[v17[1]];
  v16[2] := Table_10[v17[2]];
  v16[3] := Table_11[v17[6]];
  v11 := Table_2[(10 * v17[3]) + v17[4]] - 1;
  v16[4] := v11 div 10;
  v16[5] := v11 mod 10;
  v12 := Table_2[99 - ((10 * v17[7]) + v17[5])] - 1;
  v16[6] := v12 div 10;
  v16[7] := v12 mod 10;
  v3 := 0;
  for i := 0 to 7 do
  begin
    v14 := (v16 shl (4 * i)) or v3;
    v3 := v14;
  end;
  isrand(v3);
  rng_tap := LEN;
  rng_feed := LEN-TAP;
  for i := 0 to 7 do
    coda := Chr(lrand mod 10 + 48);
  StrNCK := coda;
end;

end.