2 * PuTTY key generation front end.
13 #define PUTTY_DO_GLOBALS
19 #define WM_DONEKEY (WM_XUSER + 1)
25 * - test the generated keys for actual working-RSA-key-hood
29 /* ----------------------------------------------------------------------
30 * Progress report code. This is really horrible :-)
32 #define PHASE1TOTAL 0x10000
33 #define PHASE2TOTAL 0x10000
34 #define PHASE3TOTAL 0x04000
36 #define PHASE2START (PHASE1TOTAL)
37 #define PHASE3START (PHASE1TOTAL + PHASE2TOTAL)
38 #define TOTALTOTAL (PHASE1TOTAL + PHASE2TOTAL + PHASE3TOTAL)
39 #define PROGRESSBIGRANGE 65535
40 #define DIVISOR ((TOTALTOTAL + PROGRESSBIGRANGE - 1) / PROGRESSBIGRANGE)
41 #define PROGRESSRANGE (TOTALTOTAL / DIVISOR)
43 unsigned phase1param
, phase1current
, phase1n
;
44 unsigned phase2param
, phase2current
, phase2n
;
49 static void progress_update(void *param
, int phase
, int iprogress
) {
50 struct progress
*p
= (struct progress
*)param
;
51 unsigned progress
= iprogress
;
56 p
->phase1param
= 0x10000 + progress
;
57 p
->phase1current
= 0x10000; p
->phase1n
= 0;
60 p
->phase2param
= 0x10000 + progress
;
61 p
->phase2current
= 0x10000; p
->phase2n
= 0;
64 p
->phase3mult
= PHASE3TOTAL
/ progress
;
67 while (p
->phase1n
< progress
) {
69 p
->phase1current
*= p
->phase1param
;
70 p
->phase1current
/= 0x10000;
72 position
= PHASE1START
+ 0x10000 - p
->phase1current
;
75 while (p
->phase2n
< progress
) {
77 p
->phase2current
*= p
->phase2param
;
78 p
->phase2current
/= 0x10000;
80 position
= PHASE2START
+ 0x10000 - p
->phase2current
;
83 position
= PHASE3START
+ progress
* p
->phase3mult
;
87 SendMessage(p
->progbar
, PBM_SETPOS
, position
/ DIVISOR
, 0);
92 #define PASSPHRASE_MAXLEN 512
94 struct PassphraseProcStruct
{
100 * Dialog-box function for the passphrase box.
102 static int CALLBACK
PassphraseProc(HWND hwnd
, UINT msg
,
103 WPARAM wParam
, LPARAM lParam
) {
104 static char *passphrase
;
105 struct PassphraseProcStruct
*p
;
109 SetForegroundWindow(hwnd
);
110 SetWindowPos (hwnd
, HWND_TOP
, 0, 0, 0, 0,
111 SWP_NOMOVE
| SWP_NOSIZE
| SWP_SHOWWINDOW
);
112 p
= (struct PassphraseProcStruct
*)lParam
;
113 passphrase
= p
->passphrase
;
115 SetDlgItemText(hwnd
, 101, p
->comment
);
119 switch (LOWORD(wParam
)) {
129 case 102: /* edit box */
130 if (HIWORD(wParam
) == EN_CHANGE
) {
131 GetDlgItemText (hwnd
, 102, passphrase
, PASSPHRASE_MAXLEN
-1);
132 passphrase
[PASSPHRASE_MAXLEN
-1] = '\0';
145 * Prompt for a key file. Assumes the filename buffer is of size
148 static int prompt_keyfile(HWND hwnd
, char *dlgtitle
,
149 char *filename
, int save
) {
151 memset(&of
, 0, sizeof(of
));
152 #ifdef OPENFILENAME_SIZE_VERSION_400
153 of
.lStructSize
= OPENFILENAME_SIZE_VERSION_400
;
155 of
.lStructSize
= sizeof(of
);
158 of
.lpstrFilter
= "All Files\0*\0\0\0";
159 of
.lpstrCustomFilter
= NULL
;
161 of
.lpstrFile
= filename
; *filename
= '\0';
162 of
.nMaxFile
= FILENAME_MAX
;
163 of
.lpstrFileTitle
= NULL
;
164 of
.lpstrInitialDir
= NULL
;
165 of
.lpstrTitle
= dlgtitle
;
168 return GetSaveFileName(&of
);
170 return GetOpenFileName(&of
);
174 * This function is needed to link with the DES code. We need not
175 * have it do anything at all.
177 void logevent(char *msg
) {
181 * Dialog-box function for the Licence box.
183 static int CALLBACK
LicenceProc (HWND hwnd
, UINT msg
,
184 WPARAM wParam
, LPARAM lParam
) {
189 switch (LOWORD(wParam
)) {
203 * Dialog-box function for the About box.
205 static int CALLBACK
AboutProc (HWND hwnd
, UINT msg
,
206 WPARAM wParam
, LPARAM lParam
) {
209 SetDlgItemText (hwnd
, 100, ver
);
212 switch (LOWORD(wParam
)) {
217 EnableWindow(hwnd
, 0);
218 DialogBox (hinst
, MAKEINTRESOURCE(214), NULL
, LicenceProc
);
219 EnableWindow(hwnd
, 1);
220 SetActiveWindow(hwnd
);
232 * Thread to generate a key.
234 struct rsa_key_thread_params
{
235 HWND progressbar
; /* notify this with progress */
236 HWND dialog
; /* notify this on completion */
240 static DWORD WINAPI
generate_rsa_key_thread(void *param
) {
241 struct rsa_key_thread_params
*params
=
242 (struct rsa_key_thread_params
*)param
;
243 struct progress prog
;
244 prog
.progbar
= params
->progressbar
;
246 rsa_generate(params
->key
, params
->aux
, KEYSIZE
, progress_update
, &prog
);
248 PostMessage(params
->dialog
, WM_DONEKEY
, 0, 0);
254 struct MainDlgState
{
255 int collecting_entropy
;
256 int generation_thread_exists
;
258 int entropy_got
, entropy_required
, entropy_size
;
264 static void hidemany(HWND hwnd
, const int *ids
, int hideit
) {
266 ShowWindow(GetDlgItem(hwnd
, *ids
++), (hideit ? SW_HIDE
: SW_SHOW
));
270 static void setupbigedit(HWND hwnd
, int id
, struct RSAKey
*key
) {
274 dec1
= bignum_decimal(key
->exponent
);
275 dec2
= bignum_decimal(key
->modulus
);
276 buffer
= malloc(strlen(dec1
)+strlen(dec2
)+
277 strlen(key
->comment
)+30);
278 sprintf(buffer
, "%d %s %s %s",
279 ssh1_bignum_bitcount(key
->modulus
),
280 dec1
, dec2
, key
->comment
);
281 SetDlgItemText(hwnd
, id
, buffer
);
288 * Dialog-box function for the main PuTTYgen dialog box.
290 static int CALLBACK
MainDlgProc (HWND hwnd
, UINT msg
,
291 WPARAM wParam
, LPARAM lParam
) {
293 controlidstart
= 100,
295 IDC_BOX_KEY
, IDC_BOXT_KEY
,
299 IDC_PKSTATIC
, IDC_KEYDISPLAY
,
300 IDC_FPSTATIC
, IDC_FINGERPRINT
,
301 IDC_COMMENTSTATIC
, IDC_COMMENTEDIT
,
302 IDC_PASSPHRASE1STATIC
, IDC_PASSPHRASE1EDIT
,
303 IDC_PASSPHRASE2STATIC
, IDC_PASSPHRASE2EDIT
,
304 IDC_BOX_ACTIONS
, IDC_BOXT_ACTIONS
,
305 IDC_GENSTATIC
, IDC_GENERATE
,
306 IDC_LOADSTATIC
, IDC_LOAD
,
307 IDC_SAVESTATIC
, IDC_SAVE
,
310 static const int nokey_ids
[] = { IDC_NOKEY
, 0 };
311 static const int generating_ids
[] = { IDC_GENERATING
, IDC_PROGRESS
, 0 };
312 static const int gotkey_ids
[] = {
313 IDC_PKSTATIC
, IDC_KEYDISPLAY
,
314 IDC_FPSTATIC
, IDC_FINGERPRINT
,
315 IDC_COMMENTSTATIC
, IDC_COMMENTEDIT
,
316 IDC_PASSPHRASE1STATIC
, IDC_PASSPHRASE1EDIT
,
317 IDC_PASSPHRASE2STATIC
, IDC_PASSPHRASE2EDIT
, 0 };
318 static const char generating_msg
[] =
319 "Please wait while a key is generated...";
320 static const char entropy_msg
[] =
321 "Please move the mouse in this window to generate randomness";
322 struct MainDlgState
*state
;
326 state
= malloc(sizeof(*state
));
327 state
->generation_thread_exists
= FALSE
;
328 state
->key_exists
= FALSE
;
329 SetWindowLong(hwnd
, GWL_USERDATA
, (LONG
)state
);
331 struct ctlpos cp
, cp2
;
333 /* Accelerators used: acglops */
335 ctlposinit(&cp
, hwnd
, 10, 10, 10);
336 bartitle(&cp
, "Public and private key generation for PuTTY",
339 IDC_BOX_KEY
, IDC_BOXT_KEY
);
341 statictext(&cp2
, "No key.", IDC_NOKEY
);
345 progressbar(&cp2
, IDC_PROGRESS
);
347 "&Public key for pasting into authorized_keys file:",
348 IDC_PKSTATIC
, IDC_KEYDISPLAY
, 7);
349 SendDlgItemMessage(hwnd
, IDC_KEYDISPLAY
, EM_SETREADONLY
, 1, 0);
350 staticedit(&cp
, "Key fingerprint:", IDC_FPSTATIC
,
351 IDC_FINGERPRINT
, 70);
352 SendDlgItemMessage(hwnd
, IDC_FINGERPRINT
, EM_SETREADONLY
, 1, 0);
353 staticedit(&cp
, "Key &comment:", IDC_COMMENTSTATIC
,
354 IDC_COMMENTEDIT
, 70);
355 staticpassedit(&cp
, "Key p&assphrase:", IDC_PASSPHRASE1STATIC
,
356 IDC_PASSPHRASE1EDIT
, 70);
357 staticpassedit(&cp
, "C&onfirm passphrase:", IDC_PASSPHRASE2STATIC
,
358 IDC_PASSPHRASE2EDIT
, 70);
360 beginbox(&cp
, "Actions",
361 IDC_BOX_ACTIONS
, IDC_BOXT_ACTIONS
);
362 staticbtn(&cp
, "Generate a public/private key pair",
363 IDC_GENSTATIC
, "&Generate", IDC_GENERATE
);
364 staticbtn(&cp
, "Load an existing private key file",
365 IDC_LOADSTATIC
, "&Load", IDC_LOAD
);
366 staticbtn(&cp
, "Save the generated key to a new file",
367 IDC_SAVESTATIC
, "&Save", IDC_SAVE
);
371 * Initially, hide the progress bar and the key display,
372 * and show the no-key display. Also disable the Save
373 * button, because with no key we obviously can't save
376 hidemany(hwnd
, nokey_ids
, FALSE
);
377 hidemany(hwnd
, generating_ids
, TRUE
);
378 hidemany(hwnd
, gotkey_ids
, TRUE
);
379 EnableWindow(GetDlgItem(hwnd
, IDC_SAVE
), 0);
383 state
= (struct MainDlgState
*)GetWindowLong(hwnd
, GWL_USERDATA
);
384 if (state
->collecting_entropy
) {
385 state
->entropy
[state
->entropy_got
++] = lParam
;
386 state
->entropy
[state
->entropy_got
++] = GetMessageTime();
387 SendDlgItemMessage(hwnd
, IDC_PROGRESS
, PBM_SETPOS
,
388 state
->entropy_got
, 0);
389 if (state
->entropy_got
>= state
->entropy_required
) {
390 struct rsa_key_thread_params
*params
;
394 * Seed the entropy pool
396 random_add_heavynoise(state
->entropy
, state
->entropy_size
);
397 memset(state
->entropy
, 0, state
->entropy_size
);
398 free(state
->entropy
);
400 SetDlgItemText(hwnd
, IDC_GENERATING
, generating_msg
);
401 SendDlgItemMessage(hwnd
, IDC_PROGRESS
, PBM_SETRANGE
, 0,
402 MAKELPARAM(0, PROGRESSRANGE
));
403 SendDlgItemMessage(hwnd
, IDC_PROGRESS
, PBM_SETPOS
, 0, 0);
405 params
= malloc(sizeof(*params
));
406 params
->progressbar
= GetDlgItem(hwnd
, IDC_PROGRESS
);
407 params
->dialog
= hwnd
;
408 params
->key
= &state
->key
;
409 params
->aux
= &state
->aux
;
411 if (!CreateThread(NULL
, 0, generate_rsa_key_thread
,
412 params
, 0, &threadid
)) {
413 MessageBox(hwnd
, "Out of thread resources",
414 "Key generation error",
415 MB_OK
| MB_ICONERROR
);
418 state
->generation_thread_exists
= TRUE
;
419 state
->collecting_entropy
= FALSE
;
425 switch (LOWORD(wParam
)) {
426 case IDC_COMMENTEDIT
:
427 if (HIWORD(wParam
) == EN_CHANGE
) {
428 state
= (struct MainDlgState
*)
429 GetWindowLong(hwnd
, GWL_USERDATA
);
430 if (state
->key_exists
) {
431 HWND editctl
= GetDlgItem(hwnd
, IDC_COMMENTEDIT
);
432 int len
= GetWindowTextLength(editctl
);
433 if (state
->key
.comment
)
434 free(state
->key
.comment
);
435 state
->key
.comment
= malloc(len
+1);
436 GetWindowText(editctl
, state
->key
.comment
, len
+1);
441 EnableWindow(hwnd
, 0);
442 DialogBox (hinst
, MAKEINTRESOURCE(213), NULL
, AboutProc
);
443 EnableWindow(hwnd
, 1);
444 SetActiveWindow(hwnd
);
447 state
= (struct MainDlgState
*)GetWindowLong(hwnd
, GWL_USERDATA
);
448 if (!state
->generation_thread_exists
) {
449 hidemany(hwnd
, nokey_ids
, TRUE
);
450 hidemany(hwnd
, generating_ids
, FALSE
);
451 hidemany(hwnd
, gotkey_ids
, TRUE
);
452 EnableWindow(GetDlgItem(hwnd
, IDC_GENERATE
), 0);
453 EnableWindow(GetDlgItem(hwnd
, IDC_LOAD
), 0);
454 EnableWindow(GetDlgItem(hwnd
, IDC_SAVE
), 0);
455 state
->key_exists
= FALSE
;
456 SetDlgItemText(hwnd
, IDC_GENERATING
, entropy_msg
);
457 state
->collecting_entropy
= TRUE
;
460 * My brief statistical tests on mouse movements
461 * suggest that there are about 5 bits of
462 * randomness in the x position, 5 in the y
463 * position, and 1.7 in the message time, making
464 * 11.7 bits of unpredictability per mouse
465 * movement. However, other people have told me
466 * it's far less than that, so I'm going to be
467 * stupidly cautious and knock that down to a nice
470 state
->entropy_required
= (KEYSIZE
/ 4) * 2;
471 state
->entropy_got
= 0;
472 state
->entropy_size
= (state
->entropy_required
*
473 sizeof(*state
->entropy
));
474 state
->entropy
= malloc(state
->entropy_size
);
476 SendDlgItemMessage(hwnd
, IDC_PROGRESS
, PBM_SETRANGE
, 0,
477 MAKELPARAM(0, state
->entropy_required
));
478 SendDlgItemMessage(hwnd
, IDC_PROGRESS
, PBM_SETPOS
, 0, 0);
482 state
= (struct MainDlgState
*)GetWindowLong(hwnd
, GWL_USERDATA
);
483 if (state
->key_exists
) {
484 char filename
[FILENAME_MAX
];
485 char passphrase
[PASSPHRASE_MAXLEN
];
486 char passphrase2
[PASSPHRASE_MAXLEN
];
487 GetDlgItemText(hwnd
, IDC_PASSPHRASE1EDIT
,
488 passphrase
, sizeof(passphrase
));
489 GetDlgItemText(hwnd
, IDC_PASSPHRASE2EDIT
,
490 passphrase2
, sizeof(passphrase2
));
491 if (strcmp(passphrase
, passphrase2
)) {
493 "The two passphrases given do not match.",
495 MB_OK
| MB_ICONERROR
);
500 ret
= MessageBox(hwnd
,
501 "Are you sure you want to save this key\n"
502 "without a passphrase to protect it?",
504 MB_YESNO
| MB_ICONWARNING
);
508 if (prompt_keyfile(hwnd
, "Save private key as:",
511 FILE *fp
= fopen(filename
, "r");
513 char buffer
[FILENAME_MAX
+80];
515 sprintf(buffer
, "Overwrite existing file\n%.*s?",
516 FILENAME_MAX
, filename
);
517 ret
= MessageBox(hwnd
, buffer
, "PuTTYgen Warning",
518 MB_YESNO
| MB_ICONWARNING
);
522 ret
= saversakey(filename
, &state
->key
, &state
->aux
,
523 *passphrase ? passphrase
: NULL
);
525 MessageBox(hwnd
, "Unable to save key file",
527 MB_OK
| MB_ICONERROR
);
533 state
= (struct MainDlgState
*)GetWindowLong(hwnd
, GWL_USERDATA
);
534 if (!state
->generation_thread_exists
) {
535 char filename
[FILENAME_MAX
];
536 if (prompt_keyfile(hwnd
, "Load private key:",
538 char passphrase
[PASSPHRASE_MAXLEN
];
542 struct PassphraseProcStruct pps
;
543 struct RSAKey newkey
;
544 struct RSAAux newaux
;
546 needs_pass
= rsakey_encrypted(filename
, &comment
);
547 pps
.passphrase
= passphrase
;
548 pps
.comment
= comment
;
552 dlgret
= DialogBoxParam(hinst
,
553 MAKEINTRESOURCE(210),
554 NULL
, PassphraseProc
,
562 ret
= loadrsakey(filename
, &newkey
, &newaux
,
565 if (comment
) free(comment
);
567 MessageBox(NULL
, "Couldn't load private key.",
568 "PuTTYgen Error", MB_OK
| MB_ICONERROR
);
569 } else if (ret
== 1) {
573 EnableWindow(GetDlgItem(hwnd
, IDC_GENERATE
), 1);
574 EnableWindow(GetDlgItem(hwnd
, IDC_LOAD
), 1);
575 EnableWindow(GetDlgItem(hwnd
, IDC_SAVE
), 1);
577 * Now update the key controls with all the
582 SetDlgItemText(hwnd
, IDC_PASSPHRASE1EDIT
,
584 SetDlgItemText(hwnd
, IDC_PASSPHRASE2EDIT
,
586 SetDlgItemText(hwnd
, IDC_COMMENTEDIT
,
589 * Set the key fingerprint.
592 char *savecomment
= state
->key
.comment
;
593 state
->key
.comment
= NULL
;
594 rsa_fingerprint(buf
, sizeof(buf
), &state
->key
);
595 state
->key
.comment
= savecomment
;
597 SetDlgItemText(hwnd
, IDC_FINGERPRINT
, buf
);
599 * Construct a decimal representation
600 * of the key, for pasting into
601 * .ssh/authorized_keys on a Unix box.
603 setupbigedit(hwnd
, IDC_KEYDISPLAY
, &state
->key
);
606 * Finally, hide the progress bar and show
609 hidemany(hwnd
, nokey_ids
, TRUE
);
610 hidemany(hwnd
, generating_ids
, TRUE
);
611 hidemany(hwnd
, gotkey_ids
, FALSE
);
612 state
->key_exists
= TRUE
;
620 state
= (struct MainDlgState
*)GetWindowLong(hwnd
, GWL_USERDATA
);
621 state
->generation_thread_exists
= FALSE
;
622 state
->key_exists
= TRUE
;
623 SendDlgItemMessage(hwnd
, IDC_PROGRESS
, PBM_SETPOS
, PROGRESSRANGE
, 0);
624 EnableWindow(GetDlgItem(hwnd
, IDC_GENERATE
), 1);
625 EnableWindow(GetDlgItem(hwnd
, IDC_LOAD
), 1);
626 EnableWindow(GetDlgItem(hwnd
, IDC_SAVE
), 1);
628 * Invent a comment for the key. We'll do this by including
629 * the date in it. This will be so horrifyingly ugly that
630 * the user will immediately want to change it, which is
633 state
->key
.comment
= malloc(30);
639 strftime(state
->key
.comment
, 30, "rsa-key-%Y%m%d", tm
);
643 * Now update the key controls with all the key data.
648 * Blank passphrase, initially. This isn't dangerous,
649 * because we will warn (Are You Sure?) before allowing
650 * the user to save an unprotected private key.
652 SetDlgItemText(hwnd
, IDC_PASSPHRASE1EDIT
, "");
653 SetDlgItemText(hwnd
, IDC_PASSPHRASE2EDIT
, "");
657 SetDlgItemText(hwnd
, IDC_COMMENTEDIT
, state
->key
.comment
);
659 * Set the key fingerprint.
662 char *savecomment
= state
->key
.comment
;
663 state
->key
.comment
= NULL
;
664 rsa_fingerprint(buf
, sizeof(buf
), &state
->key
);
665 state
->key
.comment
= savecomment
;
667 SetDlgItemText(hwnd
, IDC_FINGERPRINT
, buf
);
669 * Construct a decimal representation of the key, for
670 * pasting into .ssh/authorized_keys on a Unix box.
672 setupbigedit(hwnd
, IDC_KEYDISPLAY
, &state
->key
);
675 * Finally, hide the progress bar and show the key data.
677 hidemany(hwnd
, nokey_ids
, TRUE
);
678 hidemany(hwnd
, generating_ids
, TRUE
);
679 hidemany(hwnd
, gotkey_ids
, FALSE
);
682 state
= (struct MainDlgState
*)GetWindowLong(hwnd
, GWL_USERDATA
);
690 int WINAPI
WinMain(HINSTANCE inst
, HINSTANCE prev
, LPSTR cmdline
, int show
) {
691 InitCommonControls();
694 return DialogBox(hinst
, MAKEINTRESOURCE(201), NULL
, MainDlgProc
) != IDOK
;