| blob | 55ed7d2c9c0ff4fa3468b961c665e61465056d37 |
1 #include <stdio.h>\r
2 #include <string.h>\r
3 \r
4 #include "puttymem.h"\r
5 #include "tree234.h"\r
6 #include "network.h"\r
7 #include "int64.h"\r
8 #include "misc.h"\r
9 \r
10 struct ssh_channel;\r
11 \r
12 extern int sshfwd_write(struct ssh_channel *c, char *, int);\r
13 extern void sshfwd_write_eof(struct ssh_channel *c);\r
14 extern void sshfwd_unclean_close(struct ssh_channel *c);\r
15 extern void sshfwd_unthrottle(struct ssh_channel *c, int bufsize);\r
16 \r
17 /*\r
18 * Useful thing.\r
19 */\r
20 #ifndef lenof\r
21 #define lenof(x) ( (sizeof((x))) / (sizeof(*(x))))\r
22 #endif\r
23 \r
24 #define SSH_CIPHER_IDEA 1\r
25 #define SSH_CIPHER_DES 2\r
26 #define SSH_CIPHER_3DES 3\r
27 #define SSH_CIPHER_BLOWFISH 6\r
28 \r
29 #ifdef MSCRYPTOAPI\r
30 #define APIEXTRA 8\r
31 #else\r
32 #define APIEXTRA 0\r
33 #endif\r
34 \r
35 #ifndef BIGNUM_INTERNAL\r
36 typedef void *Bignum;\r
37 #endif\r
38 \r
39 struct RSAKey {\r
40 int bits;\r
41 int bytes;\r
42 #ifdef MSCRYPTOAPI\r
43 unsigned long exponent;\r
44 unsigned char *modulus;\r
45 #else\r
46 Bignum modulus;\r
47 Bignum exponent;\r
48 Bignum private_exponent;\r
49 Bignum p;\r
50 Bignum q;\r
51 Bignum iqmp;\r
52 #endif\r
53 char *comment;\r
54 };\r
55 \r
56 struct dss_key {\r
57 Bignum p, q, g, y, x;\r
58 };\r
59 \r
60 int makekey(unsigned char *data, int len, struct RSAKey *result,\r
61 unsigned char **keystr, int order);\r
62 int makeprivate(unsigned char *data, int len, struct RSAKey *result);\r
63 int rsaencrypt(unsigned char *data, int length, struct RSAKey *key);\r
64 Bignum rsadecrypt(Bignum input, struct RSAKey *key);\r
65 void rsasign(unsigned char *data, int length, struct RSAKey *key);\r
66 void rsasanitise(struct RSAKey *key);\r
67 int rsastr_len(struct RSAKey *key);\r
68 void rsastr_fmt(char *str, struct RSAKey *key);\r
69 void rsa_fingerprint(char *str, int len, struct RSAKey *key);\r
70 int rsa_verify(struct RSAKey *key);\r
71 unsigned char *rsa_public_blob(struct RSAKey *key, int *len);\r
72 int rsa_public_blob_len(void *data, int maxlen);\r
73 void freersakey(struct RSAKey *key);\r
74 \r
75 #ifndef PUTTY_UINT32_DEFINED\r
76 /* This makes assumptions about the int type. */\r
77 typedef unsigned int uint32;\r
78 #define PUTTY_UINT32_DEFINED\r
79 #endif\r
80 typedef uint32 word32;\r
81 \r
82 unsigned long crc32_compute(const void *s, size_t len);\r
83 unsigned long crc32_update(unsigned long crc_input, const void *s, size_t len);\r
84 \r
85 /* SSH CRC compensation attack detector */\r
86 void *crcda_make_context(void);\r
87 void crcda_free_context(void *handle);\r
88 int detect_attack(void *handle, unsigned char *buf, uint32 len,\r
89 unsigned char *IV);\r
90 \r
91 /*\r
92 * SSH2 RSA key exchange functions\r
93 */\r
94 struct ssh_hash;\r
95 void *ssh_rsakex_newkey(char *data, int len);\r
96 void ssh_rsakex_freekey(void *key);\r
97 int ssh_rsakex_klen(void *key);\r
98 void ssh_rsakex_encrypt(const struct ssh_hash *h, unsigned char *in, int inlen,\r
99 unsigned char *out, int outlen,\r
100 void *key);\r
101 \r
102 typedef struct {\r
103 uint32 h[4];\r
104 } MD5_Core_State;\r
105 \r
106 struct MD5Context {\r
107 #ifdef MSCRYPTOAPI\r
108 unsigned long hHash;\r
109 #else\r
110 MD5_Core_State core;\r
111 unsigned char block[64];\r
112 int blkused;\r
113 uint32 lenhi, lenlo;\r
114 #endif\r
115 };\r
116 \r
117 void MD5Init(struct MD5Context *context);\r
118 void MD5Update(struct MD5Context *context, unsigned char const *buf,\r
119 unsigned len);\r
120 void MD5Final(unsigned char digest[16], struct MD5Context *context);\r
121 void MD5Simple(void const *p, unsigned len, unsigned char output[16]);\r
122 \r
123 void *hmacmd5_make_context(void);\r
124 void hmacmd5_free_context(void *handle);\r
125 void hmacmd5_key(void *handle, void const *key, int len);\r
126 void hmacmd5_do_hmac(void *handle, unsigned char const *blk, int len,\r
127 unsigned char *hmac);\r
128 \r
129 typedef struct {\r
130 uint32 h[5];\r
131 unsigned char block[64];\r
132 int blkused;\r
133 uint32 lenhi, lenlo;\r
134 } SHA_State;\r
135 void SHA_Init(SHA_State * s);\r
136 void SHA_Bytes(SHA_State * s, const void *p, int len);\r
137 void SHA_Final(SHA_State * s, unsigned char *output);\r
138 void SHA_Simple(const void *p, int len, unsigned char *output);\r
139 \r
140 void hmac_sha1_simple(void *key, int keylen, void *data, int datalen,\r
141 unsigned char *output);\r
142 typedef struct {\r
143 uint32 h[8];\r
144 unsigned char block[64];\r
145 int blkused;\r
146 uint32 lenhi, lenlo;\r
147 } SHA256_State;\r
148 void SHA256_Init(SHA256_State * s);\r
149 void SHA256_Bytes(SHA256_State * s, const void *p, int len);\r
150 void SHA256_Final(SHA256_State * s, unsigned char *output);\r
151 void SHA256_Simple(const void *p, int len, unsigned char *output);\r
152 \r
153 typedef struct {\r
154 uint64 h[8];\r
155 unsigned char block[128];\r
156 int blkused;\r
157 uint32 len[4];\r
158 } SHA512_State;\r
159 void SHA512_Init(SHA512_State * s);\r
160 void SHA512_Bytes(SHA512_State * s, const void *p, int len);\r
161 void SHA512_Final(SHA512_State * s, unsigned char *output);\r
162 void SHA512_Simple(const void *p, int len, unsigned char *output);\r
163 \r
164 struct ssh_cipher {\r
165 void *(*make_context)(void);\r
166 void (*free_context)(void *);\r
167 void (*sesskey) (void *, unsigned char *key); /* for SSH-1 */\r
168 void (*encrypt) (void *, unsigned char *blk, int len);\r
169 void (*decrypt) (void *, unsigned char *blk, int len);\r
170 int blksize;\r
171 char *text_name;\r
172 };\r
173 \r
174 struct ssh2_cipher {\r
175 void *(*make_context)(void);\r
176 void (*free_context)(void *);\r
177 void (*setiv) (void *, unsigned char *key); /* for SSH-2 */\r
178 void (*setkey) (void *, unsigned char *key);/* for SSH-2 */\r
179 void (*encrypt) (void *, unsigned char *blk, int len);\r
180 void (*decrypt) (void *, unsigned char *blk, int len);\r
181 char *name;\r
182 int blksize;\r
183 int keylen;\r
184 unsigned int flags;\r
185 #define SSH_CIPHER_IS_CBC 1\r
186 char *text_name;\r
187 };\r
188 \r
189 struct ssh2_ciphers {\r
190 int nciphers;\r
191 const struct ssh2_cipher *const *list;\r
192 };\r
193 \r
194 struct ssh_mac {\r
195 void *(*make_context)(void);\r
196 void (*free_context)(void *);\r
197 void (*setkey) (void *, unsigned char *key);\r
198 /* whole-packet operations */\r
199 void (*generate) (void *, unsigned char *blk, int len, unsigned long seq);\r
200 int (*verify) (void *, unsigned char *blk, int len, unsigned long seq);\r
201 /* partial-packet operations */\r
202 void (*start) (void *);\r
203 void (*bytes) (void *, unsigned char const *, int);\r
204 void (*genresult) (void *, unsigned char *);\r
205 int (*verresult) (void *, unsigned char const *);\r
206 char *name;\r
207 int len;\r
208 char *text_name;\r
209 };\r
210 \r
211 struct ssh_hash {\r
212 void *(*init)(void); /* also allocates context */\r
213 void (*bytes)(void *, void *, int);\r
214 void (*final)(void *, unsigned char *); /* also frees context */\r
215 int hlen; /* output length in bytes */\r
216 char *text_name;\r
217 }; \r
218 \r
219 struct ssh_kex {\r
220 char *name, *groupname;\r
221 enum { KEXTYPE_DH, KEXTYPE_RSA } main_type;\r
222 /* For DH */\r
223 const unsigned char *pdata, *gdata; /* NULL means group exchange */\r
224 int plen, glen;\r
225 const struct ssh_hash *hash;\r
226 };\r
227 \r
228 struct ssh_kexes {\r
229 int nkexes;\r
230 const struct ssh_kex *const *list;\r
231 };\r
232 \r
233 struct ssh_signkey {\r
234 void *(*newkey) (char *data, int len);\r
235 void (*freekey) (void *key);\r
236 char *(*fmtkey) (void *key);\r
237 unsigned char *(*public_blob) (void *key, int *len);\r
238 unsigned char *(*private_blob) (void *key, int *len);\r
239 void *(*createkey) (unsigned char *pub_blob, int pub_len,\r
240 unsigned char *priv_blob, int priv_len);\r
241 void *(*openssh_createkey) (unsigned char **blob, int *len);\r
242 int (*openssh_fmtkey) (void *key, unsigned char *blob, int len);\r
243 int (*pubkey_bits) (void *blob, int len);\r
244 char *(*fingerprint) (void *key);\r
245 int (*verifysig) (void *key, char *sig, int siglen,\r
246 char *data, int datalen);\r
247 unsigned char *(*sign) (void *key, char *data, int datalen,\r
248 int *siglen);\r
249 char *name;\r
250 char *keytype; /* for host key cache */\r
251 };\r
252 \r
253 struct ssh_compress {\r
254 char *name;\r
255 /* For zlib@openssh.com: if non-NULL, this name will be considered once\r
256 * userauth has completed successfully. */\r
257 char *delayed_name;\r
258 void *(*compress_init) (void);\r
259 void (*compress_cleanup) (void *);\r
260 int (*compress) (void *, unsigned char *block, int len,\r
261 unsigned char **outblock, int *outlen);\r
262 void *(*decompress_init) (void);\r
263 void (*decompress_cleanup) (void *);\r
264 int (*decompress) (void *, unsigned char *block, int len,\r
265 unsigned char **outblock, int *outlen);\r
266 int (*disable_compression) (void *);\r
267 char *text_name;\r
268 };\r
269 \r
270 struct ssh2_userkey {\r
271 const struct ssh_signkey *alg; /* the key algorithm */\r
272 void *data; /* the key data */\r
273 char *comment; /* the key comment */\r
274 };\r
275 \r
276 /* The maximum length of any hash algorithm used in kex. (bytes) */\r
277 #define SSH2_KEX_MAX_HASH_LEN (32) /* SHA-256 */\r
278 \r
279 extern const struct ssh_cipher ssh_3des;\r
280 extern const struct ssh_cipher ssh_des;\r
281 extern const struct ssh_cipher ssh_blowfish_ssh1;\r
282 extern const struct ssh2_ciphers ssh2_3des;\r
283 extern const struct ssh2_ciphers ssh2_des;\r
284 extern const struct ssh2_ciphers ssh2_aes;\r
285 extern const struct ssh2_ciphers ssh2_blowfish;\r
286 extern const struct ssh2_ciphers ssh2_arcfour;\r
287 extern const struct ssh_hash ssh_sha1;\r
288 extern const struct ssh_hash ssh_sha256;\r
289 extern const struct ssh_kexes ssh_diffiehellman_group1;\r
290 extern const struct ssh_kexes ssh_diffiehellman_group14;\r
291 extern const struct ssh_kexes ssh_diffiehellman_gex;\r
292 extern const struct ssh_kexes ssh_rsa_kex;\r
293 extern const struct ssh_signkey ssh_dss;\r
294 extern const struct ssh_signkey ssh_rsa;\r
295 extern const struct ssh_mac ssh_hmac_md5;\r
296 extern const struct ssh_mac ssh_hmac_sha1;\r
297 extern const struct ssh_mac ssh_hmac_sha1_buggy;\r
298 extern const struct ssh_mac ssh_hmac_sha1_96;\r
299 extern const struct ssh_mac ssh_hmac_sha1_96_buggy;\r
300 extern const struct ssh_mac ssh_hmac_sha256;\r
301 \r
302 void *aes_make_context(void);\r
303 void aes_free_context(void *handle);\r
304 void aes128_key(void *handle, unsigned char *key);\r
305 void aes192_key(void *handle, unsigned char *key);\r
306 void aes256_key(void *handle, unsigned char *key);\r
307 void aes_iv(void *handle, unsigned char *iv);\r
308 void aes_ssh2_encrypt_blk(void *handle, unsigned char *blk, int len);\r
309 void aes_ssh2_decrypt_blk(void *handle, unsigned char *blk, int len);\r
310 \r
311 /*\r
312 * PuTTY version number formatted as an SSH version string. \r
313 */\r
314 extern char sshver[];\r
315 \r
316 /*\r
317 * Gross hack: pscp will try to start SFTP but fall back to scp1 if\r
318 * that fails. This variable is the means by which scp.c can reach\r
319 * into the SSH code and find out which one it got.\r
320 */\r
321 extern int ssh_fallback_cmd(void *handle);\r
322 \r
323 #ifndef MSCRYPTOAPI\r
324 void SHATransform(word32 * digest, word32 * data);\r
325 #endif\r
326 \r
327 int random_byte(void);\r
328 void random_add_noise(void *noise, int length);\r
329 void random_add_heavynoise(void *noise, int length);\r
330 \r
331 void logevent(void *, const char *);\r
332 \r
333 /* Allocate and register a new channel for port forwarding */\r
334 void *new_sock_channel(void *handle, Socket s);\r
335 void ssh_send_port_open(void *channel, char *hostname, int port, char *org);\r
336 \r
337 /* Exports from portfwd.c */\r
338 extern const char *pfd_newconnect(Socket * s, char *hostname, int port,\r
339 void *c, Conf *conf, int addressfamily);\r
340 /* desthost == NULL indicates dynamic (SOCKS) port forwarding */\r
341 extern const char *pfd_addforward(char *desthost, int destport, char *srcaddr,\r
342 int port, void *backhandle, Conf *conf,\r
343 void **sockdata, int address_family);\r
344 extern void pfd_close(Socket s);\r
345 extern void pfd_terminate(void *sockdata);\r
346 extern int pfd_send(Socket s, char *data, int len);\r
347 extern void pfd_send_eof(Socket s);\r
348 extern void pfd_confirm(Socket s);\r
349 extern void pfd_unthrottle(Socket s);\r
350 extern void pfd_override_throttle(Socket s, int enable);\r
351 \r
352 /* Exports from x11fwd.c */\r
353 enum {\r
354 X11_TRANS_IPV4 = 0, X11_TRANS_IPV6 = 6, X11_TRANS_UNIX = 256\r
355 };\r
356 struct X11Display {\r
357 /* Broken-down components of the display name itself */\r
358 int unixdomain;\r
359 char *hostname;\r
360 int displaynum;\r
361 int screennum;\r
362 /* OSX sometimes replaces all the above with a full Unix-socket pathname */\r
363 char *unixsocketpath;\r
364 \r
365 /* PuTTY networking SockAddr to connect to the display, and associated\r
366 * gubbins */\r
367 SockAddr addr;\r
368 int port;\r
369 char *realhost;\r
370 \r
371 /* Auth details we invented for the virtual display on the SSH server. */\r
372 int remoteauthproto;\r
373 unsigned char *remoteauthdata;\r
374 int remoteauthdatalen;\r
375 char *remoteauthprotoname;\r
376 char *remoteauthdatastring;\r
377 \r
378 /* Our local auth details for talking to the real X display. */\r
379 int localauthproto;\r
380 unsigned char *localauthdata;\r
381 int localauthdatalen;\r
382 \r
383 /*\r
384 * Used inside x11fwd.c to remember recently seen\r
385 * XDM-AUTHORIZATION-1 strings, to avoid replay attacks.\r
386 */\r
387 tree234 *xdmseen;\r
388 };\r
389 /*\r
390 * x11_setup_display() parses the display variable and fills in an\r
391 * X11Display structure. Some remote auth details are invented;\r
392 * the supplied authtype parameter configures the preferred\r
393 * authorisation protocol to use at the remote end. The local auth\r
394 * details are looked up by calling platform_get_x11_auth.\r
395 */\r
396 extern struct X11Display *x11_setup_display(char *display, int authtype,\r
397 Conf *);\r
398 void x11_free_display(struct X11Display *disp);\r
399 extern const char *x11_init(Socket *, struct X11Display *, void *,\r
400 const char *, int, Conf *);\r
401 extern void x11_close(Socket);\r
402 extern int x11_send(Socket, char *, int);\r
403 extern void x11_send_eof(Socket s);\r
404 extern void x11_unthrottle(Socket s);\r
405 extern void x11_override_throttle(Socket s, int enable);\r
406 char *x11_display(const char *display);\r
407 /* Platform-dependent X11 functions */\r
408 extern void platform_get_x11_auth(struct X11Display *display, Conf *);\r
409 /* examine a mostly-filled-in X11Display and fill in localauth* */\r
410 extern const int platform_uses_x11_unix_by_default;\r
411 /* choose default X transport in the absence of a specified one */\r
412 SockAddr platform_get_x11_unix_address(const char *path, int displaynum);\r
413 /* make up a SockAddr naming the address for displaynum */\r
414 char *platform_get_x_display(void);\r
415 /* allocated local X display string, if any */\r
416 /* Callbacks in x11.c usable _by_ platform X11 functions */\r
417 /*\r
418 * This function does the job of platform_get_x11_auth, provided\r
419 * it is told where to find a normally formatted .Xauthority file:\r
420 * it opens that file, parses it to find an auth record which\r
421 * matches the display details in "display", and fills in the\r
422 * localauth fields.\r
423 *\r
424 * It is expected that most implementations of\r
425 * platform_get_x11_auth() will work by finding their system's\r
426 * .Xauthority file, adjusting the display details if necessary\r
427 * for local oddities like Unix-domain socket transport, and\r
428 * calling this function to do the rest of the work.\r
429 */\r
430 void x11_get_auth_from_authfile(struct X11Display *display,\r
431 const char *authfilename);\r
432 \r
433 Bignum copybn(Bignum b);\r
434 Bignum bn_power_2(int n);\r
435 void bn_restore_invariant(Bignum b);\r
436 Bignum bignum_from_long(unsigned long n);\r
437 void freebn(Bignum b);\r
438 Bignum modpow(Bignum base, Bignum exp, Bignum mod);\r
439 Bignum modmul(Bignum a, Bignum b, Bignum mod);\r
440 void decbn(Bignum n);\r
441 extern Bignum Zero, One;\r
442 Bignum bignum_from_bytes(const unsigned char *data, int nbytes);\r
443 int ssh1_read_bignum(const unsigned char *data, int len, Bignum * result);\r
444 int bignum_bitcount(Bignum bn);\r
445 int ssh1_bignum_length(Bignum bn);\r
446 int ssh2_bignum_length(Bignum bn);\r
447 int bignum_byte(Bignum bn, int i);\r
448 int bignum_bit(Bignum bn, int i);\r
449 void bignum_set_bit(Bignum bn, int i, int value);\r
450 int ssh1_write_bignum(void *data, Bignum bn);\r
451 Bignum biggcd(Bignum a, Bignum b);\r
452 unsigned short bignum_mod_short(Bignum number, unsigned short modulus);\r
453 Bignum bignum_add_long(Bignum number, unsigned long addend);\r
454 Bignum bigadd(Bignum a, Bignum b);\r
455 Bignum bigsub(Bignum a, Bignum b);\r
456 Bignum bigmul(Bignum a, Bignum b);\r
457 Bignum bigmuladd(Bignum a, Bignum b, Bignum addend);\r
458 Bignum bigdiv(Bignum a, Bignum b);\r
459 Bignum bigmod(Bignum a, Bignum b);\r
460 Bignum modinv(Bignum number, Bignum modulus);\r
461 Bignum bignum_bitmask(Bignum number);\r
462 Bignum bignum_rshift(Bignum number, int shift);\r
463 int bignum_cmp(Bignum a, Bignum b);\r
464 char *bignum_decimal(Bignum x);\r
465 \r
466 #ifdef DEBUG\r
467 void diagbn(char *prefix, Bignum md);\r
468 #endif\r
469 \r
470 void *dh_setup_group(const struct ssh_kex *kex);\r
471 void *dh_setup_gex(Bignum pval, Bignum gval);\r
472 void dh_cleanup(void *);\r
473 Bignum dh_create_e(void *, int nbits);\r
474 Bignum dh_find_K(void *, Bignum f);\r
475 \r
476 int loadrsakey(const Filename *filename, struct RSAKey *key,\r
477 char *passphrase, const char **errorstr);\r
478 int rsakey_encrypted(const Filename *filename, char **comment);\r
479 int rsakey_pubblob(const Filename *filename, void **blob, int *bloblen,\r
480 char **commentptr, const char **errorstr);\r
481 \r
482 int saversakey(const Filename *filename, struct RSAKey *key, char *passphrase);\r
483 \r
484 extern int base64_decode_atom(char *atom, unsigned char *out);\r
485 extern int base64_lines(int datalen);\r
486 extern void base64_encode_atom(unsigned char *data, int n, char *out);\r
487 extern void base64_encode(FILE *fp, unsigned char *data, int datalen, int cpl);\r
488 \r
489 /* ssh2_load_userkey can return this as an error */\r
490 extern struct ssh2_userkey ssh2_wrong_passphrase;\r
491 #define SSH2_WRONG_PASSPHRASE (&ssh2_wrong_passphrase)\r
492 \r
493 int ssh2_userkey_encrypted(const Filename *filename, char **comment);\r
494 struct ssh2_userkey *ssh2_load_userkey(const Filename *filename,\r
495 char *passphrase, const char **errorstr);\r
496 unsigned char *ssh2_userkey_loadpub(const Filename *filename, char **algorithm,\r
497 int *pub_blob_len, char **commentptr,\r
498 const char **errorstr);\r
499 int ssh2_save_userkey(const Filename *filename, struct ssh2_userkey *key,\r
500 char *passphrase);\r
501 const struct ssh_signkey *find_pubkey_alg(const char *name);\r
502 \r
503 enum {\r
504 SSH_KEYTYPE_UNOPENABLE,\r
505 SSH_KEYTYPE_UNKNOWN,\r
506 SSH_KEYTYPE_SSH1, SSH_KEYTYPE_SSH2,\r
507 SSH_KEYTYPE_OPENSSH, SSH_KEYTYPE_SSHCOM\r
508 };\r
509 int key_type(const Filename *filename);\r
510 char *key_type_to_str(int type);\r
511 \r
512 int import_possible(int type);\r
513 int import_target_type(int type);\r
514 int import_encrypted(const Filename *filename, int type, char **comment);\r
515 int import_ssh1(const Filename *filename, int type,\r
516 struct RSAKey *key, char *passphrase, const char **errmsg_p);\r
517 struct ssh2_userkey *import_ssh2(const Filename *filename, int type,\r
518 char *passphrase, const char **errmsg_p);\r
519 int export_ssh1(const Filename *filename, int type,\r
520 struct RSAKey *key, char *passphrase);\r
521 int export_ssh2(const Filename *filename, int type,\r
522 struct ssh2_userkey *key, char *passphrase);\r
523 \r
524 void des3_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len);\r
525 void des3_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len);\r
526 void des3_decrypt_pubkey_ossh(unsigned char *key, unsigned char *iv,\r
527 unsigned char *blk, int len);\r
528 void des3_encrypt_pubkey_ossh(unsigned char *key, unsigned char *iv,\r
529 unsigned char *blk, int len);\r
530 void aes256_encrypt_pubkey(unsigned char *key, unsigned char *blk,\r
531 int len);\r
532 void aes256_decrypt_pubkey(unsigned char *key, unsigned char *blk,\r
533 int len);\r
534 \r
535 void des_encrypt_xdmauth(unsigned char *key, unsigned char *blk, int len);\r
536 void des_decrypt_xdmauth(unsigned char *key, unsigned char *blk, int len);\r
537 \r
538 /*\r
539 * For progress updates in the key generation utility.\r
540 */\r
541 #define PROGFN_INITIALISE 1\r
542 #define PROGFN_LIN_PHASE 2\r
543 #define PROGFN_EXP_PHASE 3\r
544 #define PROGFN_PHASE_EXTENT 4\r
545 #define PROGFN_READY 5\r
546 #define PROGFN_PROGRESS 6\r
547 typedef void (*progfn_t) (void *param, int action, int phase, int progress);\r
548 \r
549 int rsa_generate(struct RSAKey *key, int bits, progfn_t pfn,\r
550 void *pfnparam);\r
551 int dsa_generate(struct dss_key *key, int bits, progfn_t pfn,\r
552 void *pfnparam);\r
553 Bignum primegen(int bits, int modulus, int residue, Bignum factor,\r
554 int phase, progfn_t pfn, void *pfnparam, unsigned firstbits);\r
555 void invent_firstbits(unsigned *one, unsigned *two);\r
556 \r
557 \r
558 /*\r
559 * zlib compression.\r
560 */\r
561 void *zlib_compress_init(void);\r
562 void zlib_compress_cleanup(void *);\r
563 void *zlib_decompress_init(void);\r
564 void zlib_decompress_cleanup(void *);\r
565 int zlib_compress_block(void *, unsigned char *block, int len,\r
566 unsigned char **outblock, int *outlen);\r
567 int zlib_decompress_block(void *, unsigned char *block, int len,\r
568 unsigned char **outblock, int *outlen);\r
569 \r
570 /*\r
571 * SSH-1 agent messages.\r
572 */\r
573 #define SSH1_AGENTC_REQUEST_RSA_IDENTITIES 1\r
574 #define SSH1_AGENT_RSA_IDENTITIES_ANSWER 2\r
575 #define SSH1_AGENTC_RSA_CHALLENGE 3\r
576 #define SSH1_AGENT_RSA_RESPONSE 4\r
577 #define SSH1_AGENTC_ADD_RSA_IDENTITY 7\r
578 #define SSH1_AGENTC_REMOVE_RSA_IDENTITY 8\r
579 #define SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 /* openssh private? */\r
580 \r
581 /*\r
582 * Messages common to SSH-1 and OpenSSH's SSH-2.\r
583 */\r
584 #define SSH_AGENT_FAILURE 5\r
585 #define SSH_AGENT_SUCCESS 6\r
586 \r
587 /*\r
588 * OpenSSH's SSH-2 agent messages.\r
589 */\r
590 #define SSH2_AGENTC_REQUEST_IDENTITIES 11\r
591 #define SSH2_AGENT_IDENTITIES_ANSWER 12\r
592 #define SSH2_AGENTC_SIGN_REQUEST 13\r
593 #define SSH2_AGENT_SIGN_RESPONSE 14\r
594 #define SSH2_AGENTC_ADD_IDENTITY 17\r
595 #define SSH2_AGENTC_REMOVE_IDENTITY 18\r
596 #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19\r
597 \r
598 /*\r
599 * Need this to warn about support for the original SSH-2 keyfile\r
600 * format.\r
601 */\r
602 void old_keyfile_warning(void);\r