9 extern void sshfwd_close(struct ssh_channel *c);
10 extern int sshfwd_write(struct ssh_channel *c, char *, int);
11 extern void sshfwd_unthrottle(struct ssh_channel *c, int bufsize);
17 #define lenof(x) ( (sizeof((x))) / (sizeof(*(x))))
20 #define SSH_CIPHER_IDEA 1
21 #define SSH_CIPHER_DES 2
22 #define SSH_CIPHER_3DES 3
23 #define SSH_CIPHER_BLOWFISH 6
31 #ifndef BIGNUM_INTERNAL
39 unsigned long exponent;
40 unsigned char *modulus;
44 Bignum private_exponent;
56 int makekey(unsigned char *data, struct RSAKey *result,
57 unsigned char **keystr, int order);
58 int makeprivate(unsigned char *data, struct RSAKey *result);
59 void rsaencrypt(unsigned char *data, int length, struct RSAKey *key);
60 Bignum rsadecrypt(Bignum input, struct RSAKey *key);
61 void rsasign(unsigned char *data, int length, struct RSAKey *key);
62 void rsasanitise(struct RSAKey *key);
63 int rsastr_len(struct RSAKey *key);
64 void rsastr_fmt(char *str, struct RSAKey *key);
65 void rsa_fingerprint(char *str, int len, struct RSAKey *key);
66 int rsa_verify(struct RSAKey *key);
67 unsigned char *rsa_public_blob(struct RSAKey *key, int *len);
68 int rsa_public_blob_len(void *data);
69 void freersakey(struct RSAKey *key);
71 typedef unsigned int word32;
72 typedef unsigned int uint32;
74 unsigned long crc32(const void *s, size_t len);
75 unsigned long crc32_update(unsigned long crc_input, const void *s, size_t len);
77 /* SSH CRC compensation attack detector */
78 void *crcda_make_context(void);
79 void crcda_free_context(void *handle);
80 int detect_attack(void *handle, unsigned char *buf, uint32 len,
92 unsigned char block[64];
98 void MD5Init(struct MD5Context *context);
99 void MD5Update(struct MD5Context *context, unsigned char const *buf,
101 void MD5Final(unsigned char digest[16], struct MD5Context *context);
105 unsigned char block[64];
109 void SHA_Init(SHA_State * s);
110 void SHA_Bytes(SHA_State * s, void *p, int len);
111 void SHA_Final(SHA_State * s, unsigned char *output);
112 void SHA_Simple(void *p, int len, unsigned char *output);
114 void hmac_sha1_simple(void *key, int keylen, void *data, int datalen,
115 unsigned char *output);
119 unsigned char block[128];
123 void SHA512_Init(SHA512_State * s);
124 void SHA512_Bytes(SHA512_State * s, const void *p, int len);
125 void SHA512_Final(SHA512_State * s, unsigned char *output);
126 void SHA512_Simple(const void *p, int len, unsigned char *output);
129 void *(*make_context)(void);
130 void (*free_context)(void *);
131 void (*sesskey) (void *, unsigned char *key); /* for ssh 1 */
132 void (*encrypt) (void *, unsigned char *blk, int len);
133 void (*decrypt) (void *, unsigned char *blk, int len);
139 void *(*make_context)(void);
140 void (*free_context)(void *);
141 void (*setiv) (void *, unsigned char *key); /* for ssh 2 */
142 void (*setkey) (void *, unsigned char *key);/* for ssh 2 */
143 void (*encrypt) (void *, unsigned char *blk, int len);
144 void (*decrypt) (void *, unsigned char *blk, int len);
151 struct ssh2_ciphers {
153 const struct ssh2_cipher *const *list;
157 void *(*make_context)(void);
158 void (*free_context)(void *);
159 void (*setkey) (void *, unsigned char *key);
160 void (*generate) (void *, unsigned char *blk, int len, unsigned long seq);
161 int (*verify) (void *, unsigned char *blk, int len, unsigned long seq);
168 * Plugging in another KEX algorithm requires structural chaos,
169 * so it's hard to abstract them into nice little structures
170 * like this. Hence, for the moment, this is just a
171 * placeholder. I claim justification in the fact that OpenSSH
178 void *(*newkey) (char *data, int len);
179 void (*freekey) (void *key);
180 char *(*fmtkey) (void *key);
181 unsigned char *(*public_blob) (void *key, int *len);
182 unsigned char *(*private_blob) (void *key, int *len);
183 void *(*createkey) (unsigned char *pub_blob, int pub_len,
184 unsigned char *priv_blob, int priv_len);
185 void *(*openssh_createkey) (unsigned char **blob, int *len);
186 int (*openssh_fmtkey) (void *key, unsigned char *blob, int len);
187 char *(*fingerprint) (void *key);
188 int (*verifysig) (void *key, char *sig, int siglen,
189 char *data, int datalen);
190 unsigned char *(*sign) (void *key, char *data, int datalen,
193 char *keytype; /* for host key cache */
196 struct ssh_compress {
198 void *(*compress_init) (void);
199 void (*compress_cleanup) (void *);
200 int (*compress) (void *, unsigned char *block, int len,
201 unsigned char **outblock, int *outlen);
202 void *(*decompress_init) (void);
203 void (*decompress_cleanup) (void *);
204 int (*decompress) (void *, unsigned char *block, int len,
205 unsigned char **outblock, int *outlen);
206 int (*disable_compression) (void *);
210 struct ssh2_userkey {
211 const struct ssh_signkey *alg; /* the key algorithm */
212 void *data; /* the key data */
213 char *comment; /* the key comment */
216 extern const struct ssh_cipher ssh_3des;
217 extern const struct ssh_cipher ssh_des;
218 extern const struct ssh_cipher ssh_blowfish_ssh1;
219 extern const struct ssh2_ciphers ssh2_3des;
220 extern const struct ssh2_ciphers ssh2_des;
221 extern const struct ssh2_ciphers ssh2_aes;
222 extern const struct ssh2_ciphers ssh2_blowfish;
223 extern const struct ssh_kex ssh_diffiehellman;
224 extern const struct ssh_kex ssh_diffiehellman_gex;
225 extern const struct ssh_signkey ssh_dss;
226 extern const struct ssh_signkey ssh_rsa;
227 extern const struct ssh_mac ssh_md5;
228 extern const struct ssh_mac ssh_sha1;
229 extern const struct ssh_mac ssh_sha1_buggy;
232 * PuTTY version number formatted as an SSH version string.
234 extern char sshver[];
237 * Gross hack: pscp will try to start SFTP but fall back to scp1 if
238 * that fails. This variable is the means by which scp.c can reach
239 * into the SSH code and find out which one it got.
241 extern int ssh_fallback_cmd(void *handle);
244 void SHATransform(word32 * digest, word32 * data);
247 int random_byte(void);
248 void random_add_noise(void *noise, int length);
249 void random_add_heavynoise(void *noise, int length);
251 void logevent(void *, char *);
253 /* Allocate and register a new channel for port forwarding */
254 void *new_sock_channel(void *handle, Socket s);
255 void ssh_send_port_open(void *channel, char *hostname, int port, char *org);
257 Bignum copybn(Bignum b);
258 Bignum bn_power_2(int n);
259 void bn_restore_invariant(Bignum b);
260 Bignum bignum_from_long(unsigned long n);
261 void freebn(Bignum b);
262 Bignum modpow(Bignum base, Bignum exp, Bignum mod);
263 Bignum modmul(Bignum a, Bignum b, Bignum mod);
264 void decbn(Bignum n);
265 extern Bignum Zero, One;
266 Bignum bignum_from_bytes(const unsigned char *data, int nbytes);
267 int ssh1_read_bignum(const unsigned char *data, Bignum * result);
268 int bignum_bitcount(Bignum bn);
269 int ssh1_bignum_length(Bignum bn);
270 int ssh2_bignum_length(Bignum bn);
271 int bignum_byte(Bignum bn, int i);
272 int bignum_bit(Bignum bn, int i);
273 void bignum_set_bit(Bignum bn, int i, int value);
274 int ssh1_write_bignum(void *data, Bignum bn);
275 Bignum biggcd(Bignum a, Bignum b);
276 unsigned short bignum_mod_short(Bignum number, unsigned short modulus);
277 Bignum bignum_add_long(Bignum number, unsigned long addend);
278 Bignum bigmul(Bignum a, Bignum b);
279 Bignum bigmuladd(Bignum a, Bignum b, Bignum addend);
280 Bignum bigdiv(Bignum a, Bignum b);
281 Bignum bigmod(Bignum a, Bignum b);
282 Bignum modinv(Bignum number, Bignum modulus);
283 Bignum bignum_bitmask(Bignum number);
284 Bignum bignum_rshift(Bignum number, int shift);
285 int bignum_cmp(Bignum a, Bignum b);
286 char *bignum_decimal(Bignum x);
288 void *dh_setup_group1(void);
289 void *dh_setup_group(Bignum pval, Bignum gval);
290 void dh_cleanup(void *);
291 Bignum dh_create_e(void *, int nbits);
292 Bignum dh_find_K(void *, Bignum f);
294 int loadrsakey(char *filename, struct RSAKey *key, char *passphrase);
295 int rsakey_encrypted(char *filename, char **comment);
296 int rsakey_pubblob(char *filename, void **blob, int *bloblen);
298 int saversakey(char *filename, struct RSAKey *key, char *passphrase);
300 void base64_encode_atom(unsigned char *data, int n, char *out);
302 /* ssh2_load_userkey can return this as an error */
303 extern struct ssh2_userkey ssh2_wrong_passphrase;
304 #define SSH2_WRONG_PASSPHRASE (&ssh2_wrong_passphrase)
306 int ssh2_userkey_encrypted(char *filename, char **comment);
307 struct ssh2_userkey *ssh2_load_userkey(char *filename, char *passphrase);
308 char *ssh2_userkey_loadpub(char *filename, char **algorithm,
310 int ssh2_save_userkey(char *filename, struct ssh2_userkey *key,
314 SSH_KEYTYPE_UNOPENABLE,
316 SSH_KEYTYPE_SSH1, SSH_KEYTYPE_SSH2,
317 SSH_KEYTYPE_OPENSSH, SSH_KEYTYPE_SSHCOM
319 int key_type(char *filename);
320 char *key_type_to_str(int type);
322 int import_possible(int type);
323 int import_target_type(int type);
324 int import_encrypted(char *filename, int type, char **comment);
325 int import_ssh1(char *filename, int type, struct RSAKey *key,char *passphrase);
326 struct ssh2_userkey *import_ssh2(char *filename, int type, char *passphrase);
327 int export_ssh1(char *filename, int type, struct RSAKey *key,char *passphrase);
328 int export_ssh2(char *filename, int type,
329 struct ssh2_userkey *key, char *passphrase);
331 void des3_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len);
332 void des3_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len);
333 void des3_decrypt_pubkey_ossh(unsigned char *key, unsigned char *iv,
334 unsigned char *blk, int len);
335 void des3_encrypt_pubkey_ossh(unsigned char *key, unsigned char *iv,
336 unsigned char *blk, int len);
337 void aes256_encrypt_pubkey(unsigned char *key, unsigned char *blk,
339 void aes256_decrypt_pubkey(unsigned char *key, unsigned char *blk,
343 * For progress updates in the key generation utility.
345 #define PROGFN_INITIALISE 1
346 #define PROGFN_LIN_PHASE 2
347 #define PROGFN_EXP_PHASE 3
348 #define PROGFN_PHASE_EXTENT 4
349 #define PROGFN_READY 5
350 #define PROGFN_PROGRESS 6
351 typedef void (*progfn_t) (void *param, int action, int phase, int progress);
353 int rsa_generate(struct RSAKey *key, int bits, progfn_t pfn,
355 int dsa_generate(struct dss_key *key, int bits, progfn_t pfn,
357 Bignum primegen(int bits, int modulus, int residue, Bignum factor,
358 int phase, progfn_t pfn, void *pfnparam);
364 void *zlib_compress_init(void);
365 void zlib_compress_cleanup(void *);
366 void *zlib_decompress_init(void);
367 void zlib_decompress_cleanup(void *);
368 int zlib_compress_block(void *, unsigned char *block, int len,
369 unsigned char **outblock, int *outlen);
370 int zlib_decompress_block(void *, unsigned char *block, int len,
371 unsigned char **outblock, int *outlen);
374 * SSH1 agent messages.
376 #define SSH1_AGENTC_REQUEST_RSA_IDENTITIES 1
377 #define SSH1_AGENT_RSA_IDENTITIES_ANSWER 2
378 #define SSH1_AGENTC_RSA_CHALLENGE 3
379 #define SSH1_AGENT_RSA_RESPONSE 4
380 #define SSH1_AGENTC_ADD_RSA_IDENTITY 7
381 #define SSH1_AGENTC_REMOVE_RSA_IDENTITY 8
382 #define SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 /* openssh private? */
385 * Messages common to SSH1 and OpenSSH's SSH2.
387 #define SSH_AGENT_FAILURE 5
388 #define SSH_AGENT_SUCCESS 6
391 * OpenSSH's SSH2 agent messages.
393 #define SSH2_AGENTC_REQUEST_IDENTITIES 11
394 #define SSH2_AGENT_IDENTITIES_ANSWER 12
395 #define SSH2_AGENTC_SIGN_REQUEST 13
396 #define SSH2_AGENT_SIGN_RESPONSE 14
397 #define SSH2_AGENTC_ADD_IDENTITY 17
398 #define SSH2_AGENTC_REMOVE_IDENTITY 18
399 #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19
402 * Need this to warn about support for the original SSH2 keyfile
405 void old_keyfile_warning(void);