Commit | Line | Data |
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df3c4460 | 1 | #include <stdio.h> |
37508af4 | 2 | #include <string.h> |
3 | ||
dcbde236 | 4 | #include "puttymem.h" |
8def70c3 | 5 | #include "tree234.h" |
d74d141c | 6 | #include "network.h" |
5c72ca61 | 7 | #include "int64.h" |
9a30e26b | 8 | #include "misc.h" |
dcbde236 | 9 | |
2871113a | 10 | struct ssh_channel; |
11 | ||
5471d09a | 12 | extern int sshfwd_write(struct ssh_channel *c, char *, int); |
bc06669b | 13 | extern void sshfwd_write_eof(struct ssh_channel *c); |
c6b41791 | 14 | extern void sshfwd_unclean_close(struct ssh_channel *c); |
5471d09a | 15 | extern void sshfwd_unthrottle(struct ssh_channel *c, int bufsize); |
16 | ||
e5574168 | 17 | /* |
18 | * Useful thing. | |
19 | */ | |
20 | #ifndef lenof | |
21 | #define lenof(x) ( (sizeof((x))) / (sizeof(*(x)))) | |
22 | #endif | |
23 | ||
bea1ef5f | 24 | #define SSH_CIPHER_IDEA 1 |
9697bfd2 | 25 | #define SSH_CIPHER_DES 2 |
bea1ef5f | 26 | #define SSH_CIPHER_3DES 3 |
27 | #define SSH_CIPHER_BLOWFISH 6 | |
28 | ||
e5574168 | 29 | #ifdef MSCRYPTOAPI |
30 | #define APIEXTRA 8 | |
31 | #else | |
32 | #define APIEXTRA 0 | |
33 | #endif | |
34 | ||
3709bfe9 | 35 | #ifndef BIGNUM_INTERNAL |
36 | typedef void *Bignum; | |
37 | #endif | |
7cca0d81 | 38 | |
374330e2 | 39 | struct RSAKey { |
40 | int bits; | |
41 | int bytes; | |
8f203108 | 42 | #ifdef MSCRYPTOAPI |
43 | unsigned long exponent; | |
44 | unsigned char *modulus; | |
45 | #else | |
7cca0d81 | 46 | Bignum modulus; |
47 | Bignum exponent; | |
48 | Bignum private_exponent; | |
9400cf6f | 49 | Bignum p; |
50 | Bignum q; | |
51 | Bignum iqmp; | |
65a22376 | 52 | #endif |
53 | char *comment; | |
9400cf6f | 54 | }; |
55 | ||
5c72ca61 | 56 | struct dss_key { |
57 | Bignum p, q, g, y, x; | |
58 | }; | |
59 | ||
0016d70b | 60 | int makekey(unsigned char *data, int len, struct RSAKey *result, |
7cca0d81 | 61 | unsigned char **keystr, int order); |
0016d70b | 62 | int makeprivate(unsigned char *data, int len, struct RSAKey *result); |
63 | int rsaencrypt(unsigned char *data, int length, struct RSAKey *key); | |
7cca0d81 | 64 | Bignum rsadecrypt(Bignum input, struct RSAKey *key); |
65 | void rsasign(unsigned char *data, int length, struct RSAKey *key); | |
66 | void rsasanitise(struct RSAKey *key); | |
374330e2 | 67 | int rsastr_len(struct RSAKey *key); |
68 | void rsastr_fmt(char *str, struct RSAKey *key); | |
1c2a93c4 | 69 | void rsa_fingerprint(char *str, int len, struct RSAKey *key); |
014970c8 | 70 | int rsa_verify(struct RSAKey *key); |
3f2d010c | 71 | unsigned char *rsa_public_blob(struct RSAKey *key, int *len); |
0016d70b | 72 | int rsa_public_blob_len(void *data, int maxlen); |
5c58ad2d | 73 | void freersakey(struct RSAKey *key); |
374330e2 | 74 | |
b3d375b2 | 75 | #ifndef PUTTY_UINT32_DEFINED |
76 | /* This makes assumptions about the int type. */ | |
374330e2 | 77 | typedef unsigned int uint32; |
b3d375b2 | 78 | #define PUTTY_UINT32_DEFINED |
79 | #endif | |
80 | typedef uint32 word32; | |
374330e2 | 81 | |
71bedafe | 82 | unsigned long crc32_compute(const void *s, size_t len); |
9a3a93a5 | 83 | unsigned long crc32_update(unsigned long crc_input, const void *s, size_t len); |
84 | ||
85 | /* SSH CRC compensation attack detector */ | |
0183b242 | 86 | void *crcda_make_context(void); |
87 | void crcda_free_context(void *handle); | |
88 | int detect_attack(void *handle, unsigned char *buf, uint32 len, | |
89 | unsigned char *IV); | |
374330e2 | 90 | |
fae1a71b | 91 | /* |
92 | * SSH2 RSA key exchange functions | |
93 | */ | |
94 | struct ssh_hash; | |
95 | void *ssh_rsakex_newkey(char *data, int len); | |
96 | void ssh_rsakex_freekey(void *key); | |
97 | int ssh_rsakex_klen(void *key); | |
98 | void ssh_rsakex_encrypt(const struct ssh_hash *h, unsigned char *in, int inlen, | |
99 | unsigned char *out, int outlen, | |
100 | void *key); | |
101 | ||
48672163 | 102 | typedef struct { |
103 | uint32 h[4]; | |
104 | } MD5_Core_State; | |
105 | ||
374330e2 | 106 | struct MD5Context { |
8f203108 | 107 | #ifdef MSCRYPTOAPI |
108 | unsigned long hHash; | |
109 | #else | |
48672163 | 110 | MD5_Core_State core; |
bb093ca7 | 111 | unsigned char block[64]; |
48672163 | 112 | int blkused; |
113 | uint32 lenhi, lenlo; | |
8f203108 | 114 | #endif |
374330e2 | 115 | }; |
116 | ||
117 | void MD5Init(struct MD5Context *context); | |
118 | void MD5Update(struct MD5Context *context, unsigned char const *buf, | |
32874aea | 119 | unsigned len); |
374330e2 | 120 | void MD5Final(unsigned char digest[16], struct MD5Context *context); |
f33ba69e | 121 | void MD5Simple(void const *p, unsigned len, unsigned char output[16]); |
122 | ||
123 | void *hmacmd5_make_context(void); | |
124 | void hmacmd5_free_context(void *handle); | |
447f7a7b | 125 | void hmacmd5_key(void *handle, void const *key, int len); |
f33ba69e | 126 | void hmacmd5_do_hmac(void *handle, unsigned char const *blk, int len, |
127 | unsigned char *hmac); | |
374330e2 | 128 | |
e5574168 | 129 | typedef struct { |
130 | uint32 h[5]; | |
131 | unsigned char block[64]; | |
132 | int blkused; | |
133 | uint32 lenhi, lenlo; | |
134 | } SHA_State; | |
32874aea | 135 | void SHA_Init(SHA_State * s); |
136 | void SHA_Bytes(SHA_State * s, void *p, int len); | |
137 | void SHA_Final(SHA_State * s, unsigned char *output); | |
7cca0d81 | 138 | void SHA_Simple(void *p, int len, unsigned char *output); |
e5574168 | 139 | |
5c72ca61 | 140 | void hmac_sha1_simple(void *key, int keylen, void *data, int datalen, |
141 | unsigned char *output); | |
062e5811 | 142 | typedef struct { |
143 | uint32 h[8]; | |
144 | unsigned char block[64]; | |
145 | int blkused; | |
146 | uint32 lenhi, lenlo; | |
147 | } SHA256_State; | |
148 | void SHA256_Init(SHA256_State * s); | |
149 | void SHA256_Bytes(SHA256_State * s, const void *p, int len); | |
150 | void SHA256_Final(SHA256_State * s, unsigned char *output); | |
151 | void SHA256_Simple(const void *p, int len, unsigned char *output); | |
5c72ca61 | 152 | |
153 | typedef struct { | |
154 | uint64 h[8]; | |
155 | unsigned char block[128]; | |
156 | int blkused; | |
157 | uint32 len[4]; | |
158 | } SHA512_State; | |
159 | void SHA512_Init(SHA512_State * s); | |
160 | void SHA512_Bytes(SHA512_State * s, const void *p, int len); | |
161 | void SHA512_Final(SHA512_State * s, unsigned char *output); | |
162 | void SHA512_Simple(const void *p, int len, unsigned char *output); | |
163 | ||
374330e2 | 164 | struct ssh_cipher { |
371e569c | 165 | void *(*make_context)(void); |
166 | void (*free_context)(void *); | |
2e85c969 | 167 | void (*sesskey) (void *, unsigned char *key); /* for SSH-1 */ |
371e569c | 168 | void (*encrypt) (void *, unsigned char *blk, int len); |
169 | void (*decrypt) (void *, unsigned char *blk, int len); | |
0a3f1d48 | 170 | int blksize; |
371e569c | 171 | char *text_name; |
0a3f1d48 | 172 | }; |
173 | ||
174 | struct ssh2_cipher { | |
371e569c | 175 | void *(*make_context)(void); |
176 | void (*free_context)(void *); | |
2e85c969 | 177 | void (*setiv) (void *, unsigned char *key); /* for SSH-2 */ |
178 | void (*setkey) (void *, unsigned char *key);/* for SSH-2 */ | |
371e569c | 179 | void (*encrypt) (void *, unsigned char *blk, int len); |
180 | void (*decrypt) (void *, unsigned char *blk, int len); | |
e5574168 | 181 | char *name; |
182 | int blksize; | |
d2a0e0be | 183 | int keylen; |
97ab28d7 | 184 | unsigned int flags; |
185 | #define SSH_CIPHER_IS_CBC 1 | |
371e569c | 186 | char *text_name; |
e5574168 | 187 | }; |
188 | ||
0a3f1d48 | 189 | struct ssh2_ciphers { |
190 | int nciphers; | |
65a22376 | 191 | const struct ssh2_cipher *const *list; |
0a3f1d48 | 192 | }; |
193 | ||
e5574168 | 194 | struct ssh_mac { |
e0e1a00d | 195 | void *(*make_context)(void); |
196 | void (*free_context)(void *); | |
197 | void (*setkey) (void *, unsigned char *key); | |
9916cc1e | 198 | /* whole-packet operations */ |
e0e1a00d | 199 | void (*generate) (void *, unsigned char *blk, int len, unsigned long seq); |
200 | int (*verify) (void *, unsigned char *blk, int len, unsigned long seq); | |
9916cc1e | 201 | /* partial-packet operations */ |
202 | void (*start) (void *); | |
203 | void (*bytes) (void *, unsigned char const *, int); | |
204 | void (*genresult) (void *, unsigned char *); | |
205 | int (*verresult) (void *, unsigned char const *); | |
e5574168 | 206 | char *name; |
207 | int len; | |
6c135243 | 208 | char *text_name; |
e5574168 | 209 | }; |
210 | ||
b672f405 | 211 | struct ssh_hash { |
212 | void *(*init)(void); /* also allocates context */ | |
213 | void (*bytes)(void *, void *, int); | |
214 | void (*final)(void *, unsigned char *); /* also frees context */ | |
215 | int hlen; /* output length in bytes */ | |
c6daaa1a | 216 | char *text_name; |
b672f405 | 217 | }; |
218 | ||
e5574168 | 219 | struct ssh_kex { |
d1aaf71d | 220 | char *name, *groupname; |
fae1a71b | 221 | enum { KEXTYPE_DH, KEXTYPE_RSA } main_type; |
222 | /* For DH */ | |
223 | const unsigned char *pdata, *gdata; /* NULL means group exchange */ | |
d1aaf71d | 224 | int plen, glen; |
b672f405 | 225 | const struct ssh_hash *hash; |
e5574168 | 226 | }; |
227 | ||
34557659 | 228 | struct ssh_kexes { |
229 | int nkexes; | |
230 | const struct ssh_kex *const *list; | |
231 | }; | |
232 | ||
e055a386 | 233 | struct ssh_signkey { |
32874aea | 234 | void *(*newkey) (char *data, int len); |
235 | void (*freekey) (void *key); | |
236 | char *(*fmtkey) (void *key); | |
237 | unsigned char *(*public_blob) (void *key, int *len); | |
238 | unsigned char *(*private_blob) (void *key, int *len); | |
239 | void *(*createkey) (unsigned char *pub_blob, int pub_len, | |
240 | unsigned char *priv_blob, int priv_len); | |
241 | void *(*openssh_createkey) (unsigned char **blob, int *len); | |
242 | int (*openssh_fmtkey) (void *key, unsigned char *blob, int len); | |
47a6b94c | 243 | int (*pubkey_bits) (void *blob, int len); |
32874aea | 244 | char *(*fingerprint) (void *key); |
245 | int (*verifysig) (void *key, char *sig, int siglen, | |
246 | char *data, int datalen); | |
247 | unsigned char *(*sign) (void *key, char *data, int datalen, | |
248 | int *siglen); | |
e5574168 | 249 | char *name; |
32874aea | 250 | char *keytype; /* for host key cache */ |
e5574168 | 251 | }; |
252 | ||
253 | struct ssh_compress { | |
254 | char *name; | |
ab18ccff | 255 | /* For zlib@openssh.com: if non-NULL, this name will be considered once |
256 | * userauth has completed successfully. */ | |
257 | char *delayed_name; | |
5366aed8 | 258 | void *(*compress_init) (void); |
259 | void (*compress_cleanup) (void *); | |
260 | int (*compress) (void *, unsigned char *block, int len, | |
32874aea | 261 | unsigned char **outblock, int *outlen); |
5366aed8 | 262 | void *(*decompress_init) (void); |
263 | void (*decompress_cleanup) (void *); | |
264 | int (*decompress) (void *, unsigned char *block, int len, | |
32874aea | 265 | unsigned char **outblock, int *outlen); |
5366aed8 | 266 | int (*disable_compression) (void *); |
267 | char *text_name; | |
374330e2 | 268 | }; |
269 | ||
65a22376 | 270 | struct ssh2_userkey { |
271 | const struct ssh_signkey *alg; /* the key algorithm */ | |
272 | void *data; /* the key data */ | |
273 | char *comment; /* the key comment */ | |
274 | }; | |
275 | ||
754c0df9 | 276 | /* The maximum length of any hash algorithm used in kex. (bytes) */ |
277 | #define SSH2_KEX_MAX_HASH_LEN (32) /* SHA-256 */ | |
278 | ||
65a22376 | 279 | extern const struct ssh_cipher ssh_3des; |
280 | extern const struct ssh_cipher ssh_des; | |
281 | extern const struct ssh_cipher ssh_blowfish_ssh1; | |
282 | extern const struct ssh2_ciphers ssh2_3des; | |
0d7c43a6 | 283 | extern const struct ssh2_ciphers ssh2_des; |
65a22376 | 284 | extern const struct ssh2_ciphers ssh2_aes; |
285 | extern const struct ssh2_ciphers ssh2_blowfish; | |
a2add208 | 286 | extern const struct ssh2_ciphers ssh2_arcfour; |
b672f405 | 287 | extern const struct ssh_hash ssh_sha1; |
062e5811 | 288 | extern const struct ssh_hash ssh_sha256; |
34557659 | 289 | extern const struct ssh_kexes ssh_diffiehellman_group1; |
290 | extern const struct ssh_kexes ssh_diffiehellman_group14; | |
291 | extern const struct ssh_kexes ssh_diffiehellman_gex; | |
fae1a71b | 292 | extern const struct ssh_kexes ssh_rsa_kex; |
65a22376 | 293 | extern const struct ssh_signkey ssh_dss; |
294 | extern const struct ssh_signkey ssh_rsa; | |
1993f323 | 295 | extern const struct ssh_mac ssh_hmac_md5; |
296 | extern const struct ssh_mac ssh_hmac_sha1; | |
297 | extern const struct ssh_mac ssh_hmac_sha1_buggy; | |
6668a75e | 298 | extern const struct ssh_mac ssh_hmac_sha1_96; |
299 | extern const struct ssh_mac ssh_hmac_sha1_96_buggy; | |
1993f323 | 300 | |
06e09f43 | 301 | void *aes_make_context(void); |
302 | void aes_free_context(void *handle); | |
303 | void aes128_key(void *handle, unsigned char *key); | |
304 | void aes192_key(void *handle, unsigned char *key); | |
305 | void aes256_key(void *handle, unsigned char *key); | |
306 | void aes_iv(void *handle, unsigned char *iv); | |
307 | void aes_ssh2_encrypt_blk(void *handle, unsigned char *blk, int len); | |
308 | void aes_ssh2_decrypt_blk(void *handle, unsigned char *blk, int len); | |
65a22376 | 309 | |
900a4ee6 | 310 | /* |
311 | * PuTTY version number formatted as an SSH version string. | |
312 | */ | |
313 | extern char sshver[]; | |
314 | ||
fd5e5847 | 315 | /* |
316 | * Gross hack: pscp will try to start SFTP but fall back to scp1 if | |
317 | * that fails. This variable is the means by which scp.c can reach | |
318 | * into the SSH code and find out which one it got. | |
319 | */ | |
51470298 | 320 | extern int ssh_fallback_cmd(void *handle); |
fd5e5847 | 321 | |
8f203108 | 322 | #ifndef MSCRYPTOAPI |
32874aea | 323 | void SHATransform(word32 * digest, word32 * data); |
8f203108 | 324 | #endif |
374330e2 | 325 | |
326 | int random_byte(void); | |
327 | void random_add_noise(void *noise, int length); | |
6e522441 | 328 | void random_add_heavynoise(void *noise, int length); |
c5e9c988 | 329 | |
cbe2d68f | 330 | void logevent(void *, const char *); |
51470298 | 331 | |
332 | /* Allocate and register a new channel for port forwarding */ | |
333 | void *new_sock_channel(void *handle, Socket s); | |
6b78788a | 334 | void ssh_send_port_open(void *channel, char *hostname, int port, char *org); |
e5574168 | 335 | |
322d09a8 | 336 | /* Exports from portfwd.c */ |
cbe2d68f | 337 | extern const char *pfd_newconnect(Socket * s, char *hostname, int port, |
4a693cfc | 338 | void *c, Conf *conf, int addressfamily); |
820ebe3b | 339 | /* desthost == NULL indicates dynamic (SOCKS) port forwarding */ |
cbe2d68f | 340 | extern const char *pfd_addforward(char *desthost, int destport, char *srcaddr, |
4a693cfc | 341 | int port, void *backhandle, Conf *conf, |
342 | void **sockdata, int address_family); | |
322d09a8 | 343 | extern void pfd_close(Socket s); |
fda2feb1 | 344 | extern void pfd_terminate(void *sockdata); |
322d09a8 | 345 | extern int pfd_send(Socket s, char *data, int len); |
bc06669b | 346 | extern void pfd_send_eof(Socket s); |
322d09a8 | 347 | extern void pfd_confirm(Socket s); |
348 | extern void pfd_unthrottle(Socket s); | |
349 | extern void pfd_override_throttle(Socket s, int enable); | |
350 | ||
351 | /* Exports from x11fwd.c */ | |
8def70c3 | 352 | enum { |
353 | X11_TRANS_IPV4 = 0, X11_TRANS_IPV6 = 6, X11_TRANS_UNIX = 256 | |
354 | }; | |
355 | struct X11Display { | |
356 | /* Broken-down components of the display name itself */ | |
357 | int unixdomain; | |
358 | char *hostname; | |
359 | int displaynum; | |
360 | int screennum; | |
361 | /* OSX sometimes replaces all the above with a full Unix-socket pathname */ | |
362 | char *unixsocketpath; | |
363 | ||
364 | /* PuTTY networking SockAddr to connect to the display, and associated | |
365 | * gubbins */ | |
366 | SockAddr addr; | |
367 | int port; | |
368 | char *realhost; | |
369 | ||
370 | /* Auth details we invented for the virtual display on the SSH server. */ | |
371 | int remoteauthproto; | |
372 | unsigned char *remoteauthdata; | |
373 | int remoteauthdatalen; | |
374 | char *remoteauthprotoname; | |
375 | char *remoteauthdatastring; | |
376 | ||
377 | /* Our local auth details for talking to the real X display. */ | |
378 | int localauthproto; | |
379 | unsigned char *localauthdata; | |
380 | int localauthdatalen; | |
381 | ||
382 | /* | |
383 | * Used inside x11fwd.c to remember recently seen | |
384 | * XDM-AUTHORIZATION-1 strings, to avoid replay attacks. | |
385 | */ | |
386 | tree234 *xdmseen; | |
387 | }; | |
388 | /* | |
389 | * x11_setup_display() parses the display variable and fills in an | |
390 | * X11Display structure. Some remote auth details are invented; | |
391 | * the supplied authtype parameter configures the preferred | |
392 | * authorisation protocol to use at the remote end. The local auth | |
393 | * details are looked up by calling platform_get_x11_auth. | |
394 | */ | |
395 | extern struct X11Display *x11_setup_display(char *display, int authtype, | |
4a693cfc | 396 | Conf *); |
8def70c3 | 397 | void x11_free_display(struct X11Display *disp); |
398 | extern const char *x11_init(Socket *, struct X11Display *, void *, | |
4a693cfc | 399 | const char *, int, Conf *); |
322d09a8 | 400 | extern void x11_close(Socket); |
401 | extern int x11_send(Socket, char *, int); | |
bc06669b | 402 | extern void x11_send_eof(Socket s); |
322d09a8 | 403 | extern void x11_unthrottle(Socket s); |
404 | extern void x11_override_throttle(Socket s, int enable); | |
fc0f17db | 405 | char *x11_display(const char *display); |
fc0f17db | 406 | /* Platform-dependent X11 functions */ |
4a693cfc | 407 | extern void platform_get_x11_auth(struct X11Display *display, Conf *); |
8def70c3 | 408 | /* examine a mostly-filled-in X11Display and fill in localauth* */ |
409 | extern const int platform_uses_x11_unix_by_default; | |
410 | /* choose default X transport in the absence of a specified one */ | |
411 | SockAddr platform_get_x11_unix_address(const char *path, int displaynum); | |
412 | /* make up a SockAddr naming the address for displaynum */ | |
46ed7b64 | 413 | char *platform_get_x_display(void); |
8def70c3 | 414 | /* allocated local X display string, if any */ |
415 | /* Callbacks in x11.c usable _by_ platform X11 functions */ | |
416 | /* | |
417 | * This function does the job of platform_get_x11_auth, provided | |
418 | * it is told where to find a normally formatted .Xauthority file: | |
419 | * it opens that file, parses it to find an auth record which | |
420 | * matches the display details in "display", and fills in the | |
421 | * localauth fields. | |
422 | * | |
423 | * It is expected that most implementations of | |
424 | * platform_get_x11_auth() will work by finding their system's | |
425 | * .Xauthority file, adjusting the display details if necessary | |
426 | * for local oddities like Unix-domain socket transport, and | |
427 | * calling this function to do the rest of the work. | |
428 | */ | |
429 | void x11_get_auth_from_authfile(struct X11Display *display, | |
430 | const char *authfilename); | |
9bee6826 | 431 | |
7cca0d81 | 432 | Bignum copybn(Bignum b); |
3709bfe9 | 433 | Bignum bn_power_2(int n); |
434 | void bn_restore_invariant(Bignum b); | |
5c72ca61 | 435 | Bignum bignum_from_long(unsigned long n); |
e5574168 | 436 | void freebn(Bignum b); |
59600f67 | 437 | Bignum modpow(Bignum base, Bignum exp, Bignum mod); |
438 | Bignum modmul(Bignum a, Bignum b, Bignum mod); | |
7cca0d81 | 439 | void decbn(Bignum n); |
440 | extern Bignum Zero, One; | |
27cd7fc2 | 441 | Bignum bignum_from_bytes(const unsigned char *data, int nbytes); |
0016d70b | 442 | int ssh1_read_bignum(const unsigned char *data, int len, Bignum * result); |
ddecd643 | 443 | int bignum_bitcount(Bignum bn); |
5c58ad2d | 444 | int ssh1_bignum_length(Bignum bn); |
260f3dec | 445 | int ssh2_bignum_length(Bignum bn); |
5c58ad2d | 446 | int bignum_byte(Bignum bn, int i); |
9400cf6f | 447 | int bignum_bit(Bignum bn, int i); |
448 | void bignum_set_bit(Bignum bn, int i, int value); | |
5c58ad2d | 449 | int ssh1_write_bignum(void *data, Bignum bn); |
9400cf6f | 450 | Bignum biggcd(Bignum a, Bignum b); |
451 | unsigned short bignum_mod_short(Bignum number, unsigned short modulus); | |
452 | Bignum bignum_add_long(Bignum number, unsigned long addend); | |
d737853b | 453 | Bignum bigadd(Bignum a, Bignum b); |
454 | Bignum bigsub(Bignum a, Bignum b); | |
e5e97067 MW |
455 | Bignum biglsl(Bignum x, int n); |
456 | Bignum biglsr(Bignum x, int n); | |
9400cf6f | 457 | Bignum bigmul(Bignum a, Bignum b); |
5c72ca61 | 458 | Bignum bigmuladd(Bignum a, Bignum b, Bignum addend); |
459 | Bignum bigdiv(Bignum a, Bignum b); | |
460 | Bignum bigmod(Bignum a, Bignum b); | |
9400cf6f | 461 | Bignum modinv(Bignum number, Bignum modulus); |
07cffb6a MW |
462 | int kronecker(Bignum a, Bignum n); |
463 | Bignum modsqrt(Bignum a, Bignum p); | |
3709bfe9 | 464 | Bignum bignum_bitmask(Bignum number); |
9400cf6f | 465 | Bignum bignum_rshift(Bignum number, int shift); |
8c3cd914 | 466 | int bignum_cmp(Bignum a, Bignum b); |
6e522441 | 467 | char *bignum_decimal(Bignum x); |
e5574168 | 468 | |
a3412f52 | 469 | #ifdef DEBUG |
470 | void diagbn(char *prefix, Bignum md); | |
471 | #endif | |
472 | ||
d1aaf71d | 473 | void *dh_setup_group(const struct ssh_kex *kex); |
474 | void *dh_setup_gex(Bignum pval, Bignum gval); | |
27cd7fc2 | 475 | void dh_cleanup(void *); |
476 | Bignum dh_create_e(void *, int nbits); | |
477 | Bignum dh_find_K(void *, Bignum f); | |
7cca0d81 | 478 | |
9a30e26b | 479 | int loadrsakey(const Filename *filename, struct RSAKey *key, |
222d54dc | 480 | char *passphrase, const char **errorstr); |
9a30e26b | 481 | int rsakey_encrypted(const Filename *filename, char **comment); |
222d54dc | 482 | int rsakey_pubblob(const Filename *filename, void **blob, int *bloblen, |
4bcf919e | 483 | char **commentptr, const char **errorstr); |
7cca0d81 | 484 | |
9a30e26b | 485 | int saversakey(const Filename *filename, struct RSAKey *key, char *passphrase); |
65a22376 | 486 | |
df3c4460 | 487 | extern int base64_decode_atom(char *atom, unsigned char *out); |
488 | extern int base64_lines(int datalen); | |
489 | extern void base64_encode_atom(unsigned char *data, int n, char *out); | |
490 | extern void base64_encode(FILE *fp, unsigned char *data, int datalen, int cpl); | |
65a22376 | 491 | |
492 | /* ssh2_load_userkey can return this as an error */ | |
493 | extern struct ssh2_userkey ssh2_wrong_passphrase; | |
494 | #define SSH2_WRONG_PASSPHRASE (&ssh2_wrong_passphrase) | |
495 | ||
9a30e26b | 496 | int ssh2_userkey_encrypted(const Filename *filename, char **comment); |
497 | struct ssh2_userkey *ssh2_load_userkey(const Filename *filename, | |
222d54dc | 498 | char *passphrase, const char **errorstr); |
8a9977e5 | 499 | unsigned char *ssh2_userkey_loadpub(const Filename *filename, char **algorithm, |
500 | int *pub_blob_len, char **commentptr, | |
501 | const char **errorstr); | |
9a30e26b | 502 | int ssh2_save_userkey(const Filename *filename, struct ssh2_userkey *key, |
32874aea | 503 | char *passphrase); |
47a6b94c | 504 | const struct ssh_signkey *find_pubkey_alg(const char *name); |
65a22376 | 505 | |
231ee168 | 506 | enum { |
507 | SSH_KEYTYPE_UNOPENABLE, | |
508 | SSH_KEYTYPE_UNKNOWN, | |
509 | SSH_KEYTYPE_SSH1, SSH_KEYTYPE_SSH2, | |
510 | SSH_KEYTYPE_OPENSSH, SSH_KEYTYPE_SSHCOM | |
511 | }; | |
9a30e26b | 512 | int key_type(const Filename *filename); |
231ee168 | 513 | char *key_type_to_str(int type); |
6e522441 | 514 | |
9dda6459 | 515 | int import_possible(int type); |
516 | int import_target_type(int type); | |
9a30e26b | 517 | int import_encrypted(const Filename *filename, int type, char **comment); |
518 | int import_ssh1(const Filename *filename, int type, | |
1e87cce5 | 519 | struct RSAKey *key, char *passphrase, const char **errmsg_p); |
9a30e26b | 520 | struct ssh2_userkey *import_ssh2(const Filename *filename, int type, |
1e87cce5 | 521 | char *passphrase, const char **errmsg_p); |
9a30e26b | 522 | int export_ssh1(const Filename *filename, int type, |
523 | struct RSAKey *key, char *passphrase); | |
524 | int export_ssh2(const Filename *filename, int type, | |
4801c01c | 525 | struct ssh2_userkey *key, char *passphrase); |
9dda6459 | 526 | |
65a22376 | 527 | void des3_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len); |
528 | void des3_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len); | |
9dda6459 | 529 | void des3_decrypt_pubkey_ossh(unsigned char *key, unsigned char *iv, |
530 | unsigned char *blk, int len); | |
531 | void des3_encrypt_pubkey_ossh(unsigned char *key, unsigned char *iv, | |
532 | unsigned char *blk, int len); | |
32874aea | 533 | void aes256_encrypt_pubkey(unsigned char *key, unsigned char *blk, |
534 | int len); | |
535 | void aes256_decrypt_pubkey(unsigned char *key, unsigned char *blk, | |
536 | int len); | |
9400cf6f | 537 | |
2f92b717 | 538 | void des_encrypt_xdmauth(unsigned char *key, unsigned char *blk, int len); |
b3ebaa28 | 539 | void des_decrypt_xdmauth(unsigned char *key, unsigned char *blk, int len); |
2f92b717 | 540 | |
9400cf6f | 541 | /* |
542 | * For progress updates in the key generation utility. | |
543 | */ | |
7c7f6893 | 544 | #define PROGFN_INITIALISE 1 |
545 | #define PROGFN_LIN_PHASE 2 | |
546 | #define PROGFN_EXP_PHASE 3 | |
547 | #define PROGFN_PHASE_EXTENT 4 | |
548 | #define PROGFN_READY 5 | |
549 | #define PROGFN_PROGRESS 6 | |
5c72ca61 | 550 | typedef void (*progfn_t) (void *param, int action, int phase, int progress); |
9400cf6f | 551 | |
32874aea | 552 | int rsa_generate(struct RSAKey *key, int bits, progfn_t pfn, |
553 | void *pfnparam); | |
5c72ca61 | 554 | int dsa_generate(struct dss_key *key, int bits, progfn_t pfn, |
555 | void *pfnparam); | |
556 | Bignum primegen(int bits, int modulus, int residue, Bignum factor, | |
79dae043 | 557 | int phase, progfn_t pfn, void *pfnparam, unsigned firstbits); |
558 | void invent_firstbits(unsigned *one, unsigned *two); | |
4ba9b64b | 559 | |
d74d141c | 560 | |
4ba9b64b | 561 | /* |
562 | * zlib compression. | |
563 | */ | |
5366aed8 | 564 | void *zlib_compress_init(void); |
565 | void zlib_compress_cleanup(void *); | |
566 | void *zlib_decompress_init(void); | |
567 | void zlib_decompress_cleanup(void *); | |
568 | int zlib_compress_block(void *, unsigned char *block, int len, | |
4ba9b64b | 569 | unsigned char **outblock, int *outlen); |
5366aed8 | 570 | int zlib_decompress_block(void *, unsigned char *block, int len, |
4ba9b64b | 571 | unsigned char **outblock, int *outlen); |
1983e559 | 572 | |
573 | /* | |
2e85c969 | 574 | * SSH-1 agent messages. |
1983e559 | 575 | */ |
576 | #define SSH1_AGENTC_REQUEST_RSA_IDENTITIES 1 | |
577 | #define SSH1_AGENT_RSA_IDENTITIES_ANSWER 2 | |
578 | #define SSH1_AGENTC_RSA_CHALLENGE 3 | |
579 | #define SSH1_AGENT_RSA_RESPONSE 4 | |
580 | #define SSH1_AGENTC_ADD_RSA_IDENTITY 7 | |
581 | #define SSH1_AGENTC_REMOVE_RSA_IDENTITY 8 | |
32874aea | 582 | #define SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 /* openssh private? */ |
1983e559 | 583 | |
584 | /* | |
2e85c969 | 585 | * Messages common to SSH-1 and OpenSSH's SSH-2. |
1983e559 | 586 | */ |
587 | #define SSH_AGENT_FAILURE 5 | |
588 | #define SSH_AGENT_SUCCESS 6 | |
589 | ||
590 | /* | |
2e85c969 | 591 | * OpenSSH's SSH-2 agent messages. |
1983e559 | 592 | */ |
593 | #define SSH2_AGENTC_REQUEST_IDENTITIES 11 | |
594 | #define SSH2_AGENT_IDENTITIES_ANSWER 12 | |
595 | #define SSH2_AGENTC_SIGN_REQUEST 13 | |
596 | #define SSH2_AGENT_SIGN_RESPONSE 14 | |
597 | #define SSH2_AGENTC_ADD_IDENTITY 17 | |
598 | #define SSH2_AGENTC_REMOVE_IDENTITY 18 | |
599 | #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19 | |
7bedb13c | 600 | |
601 | /* | |
2e85c969 | 602 | * Need this to warn about support for the original SSH-2 keyfile |
7bedb13c | 603 | * format. |
604 | */ | |
605 | void old_keyfile_warning(void); |