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 int detect_attack(unsigned char *buf, uint32 len, unsigned char *IV);
89 unsigned char block[64];
95 void MD5Init(struct MD5Context *context);
96 void MD5Update(struct MD5Context *context, unsigned char const *buf,
98 void MD5Final(unsigned char digest[16], struct MD5Context *context);
102 unsigned char block[64];
106 void SHA_Init(SHA_State * s);
107 void SHA_Bytes(SHA_State * s, void *p, int len);
108 void SHA_Final(SHA_State * s, unsigned char *output);
109 void SHA_Simple(void *p, int len, unsigned char *output);
111 void hmac_sha1_simple(void *key, int keylen, void *data, int datalen,
112 unsigned char *output);
116 unsigned char block[128];
120 void SHA512_Init(SHA512_State * s);
121 void SHA512_Bytes(SHA512_State * s, const void *p, int len);
122 void SHA512_Final(SHA512_State * s, unsigned char *output);
123 void SHA512_Simple(const void *p, int len, unsigned char *output);
126 void *(*make_context)(void);
127 void (*free_context)(void *);
128 void (*sesskey) (void *, unsigned char *key); /* for ssh 1 */
129 void (*encrypt) (void *, unsigned char *blk, int len);
130 void (*decrypt) (void *, unsigned char *blk, int len);
136 void *(*make_context)(void);
137 void (*free_context)(void *);
138 void (*setiv) (void *, unsigned char *key); /* for ssh 2 */
139 void (*setkey) (void *, unsigned char *key);/* for ssh 2 */
140 void (*encrypt) (void *, unsigned char *blk, int len);
141 void (*decrypt) (void *, unsigned char *blk, int len);
148 struct ssh2_ciphers {
150 const struct ssh2_cipher *const *list;
154 void *(*make_context)(void);
155 void (*free_context)(void *);
156 void (*setkey) (void *, unsigned char *key);
157 void (*generate) (void *, unsigned char *blk, int len, unsigned long seq);
158 int (*verify) (void *, unsigned char *blk, int len, unsigned long seq);
165 * Plugging in another KEX algorithm requires structural chaos,
166 * so it's hard to abstract them into nice little structures
167 * like this. Hence, for the moment, this is just a
168 * placeholder. I claim justification in the fact that OpenSSH
175 void *(*newkey) (char *data, int len);
176 void (*freekey) (void *key);
177 char *(*fmtkey) (void *key);
178 unsigned char *(*public_blob) (void *key, int *len);
179 unsigned char *(*private_blob) (void *key, int *len);
180 void *(*createkey) (unsigned char *pub_blob, int pub_len,
181 unsigned char *priv_blob, int priv_len);
182 void *(*openssh_createkey) (unsigned char **blob, int *len);
183 int (*openssh_fmtkey) (void *key, unsigned char *blob, int len);
184 char *(*fingerprint) (void *key);
185 int (*verifysig) (void *key, char *sig, int siglen,
186 char *data, int datalen);
187 unsigned char *(*sign) (void *key, char *data, int datalen,
190 char *keytype; /* for host key cache */
193 struct ssh_compress {
195 void (*compress_init) (void);
196 int (*compress) (unsigned char *block, int len,
197 unsigned char **outblock, int *outlen);
198 void (*decompress_init) (void);
199 int (*decompress) (unsigned char *block, int len,
200 unsigned char **outblock, int *outlen);
201 int (*disable_compression) (void);
204 struct ssh2_userkey {
205 const struct ssh_signkey *alg; /* the key algorithm */
206 void *data; /* the key data */
207 char *comment; /* the key comment */
210 extern const struct ssh_cipher ssh_3des;
211 extern const struct ssh_cipher ssh_des;
212 extern const struct ssh_cipher ssh_blowfish_ssh1;
213 extern const struct ssh2_ciphers ssh2_3des;
214 extern const struct ssh2_ciphers ssh2_des;
215 extern const struct ssh2_ciphers ssh2_aes;
216 extern const struct ssh2_ciphers ssh2_blowfish;
217 extern const struct ssh_kex ssh_diffiehellman;
218 extern const struct ssh_kex ssh_diffiehellman_gex;
219 extern const struct ssh_signkey ssh_dss;
220 extern const struct ssh_signkey ssh_rsa;
221 extern const struct ssh_mac ssh_md5;
222 extern const struct ssh_mac ssh_sha1;
223 extern const struct ssh_mac ssh_sha1_buggy;
226 * PuTTY version number formatted as an SSH version string.
228 extern char sshver[];
231 * Gross hack: pscp will try to start SFTP but fall back to scp1 if
232 * that fails. This variable is the means by which scp.c can reach
233 * into the SSH code and find out which one it got.
235 extern int ssh_fallback_cmd(void *handle);
238 void SHATransform(word32 * digest, word32 * data);
241 int random_byte(void);
242 void random_add_noise(void *noise, int length);
243 void random_add_heavynoise(void *noise, int length);
245 void logevent(char *);
247 /* Allocate and register a new channel for port forwarding */
248 void *new_sock_channel(void *handle, Socket s);
249 void ssh_send_port_open(void *handle, void *channel,
250 char *hostname, int port, char *org);
252 Bignum copybn(Bignum b);
253 Bignum bn_power_2(int n);
254 void bn_restore_invariant(Bignum b);
255 Bignum bignum_from_long(unsigned long n);
256 void freebn(Bignum b);
257 Bignum modpow(Bignum base, Bignum exp, Bignum mod);
258 Bignum modmul(Bignum a, Bignum b, Bignum mod);
259 void decbn(Bignum n);
260 extern Bignum Zero, One;
261 Bignum bignum_from_bytes(unsigned char *data, int nbytes);
262 int ssh1_read_bignum(unsigned char *data, Bignum * result);
263 int bignum_bitcount(Bignum bn);
264 int ssh1_bignum_length(Bignum bn);
265 int ssh2_bignum_length(Bignum bn);
266 int bignum_byte(Bignum bn, int i);
267 int bignum_bit(Bignum bn, int i);
268 void bignum_set_bit(Bignum bn, int i, int value);
269 int ssh1_write_bignum(void *data, Bignum bn);
270 Bignum biggcd(Bignum a, Bignum b);
271 unsigned short bignum_mod_short(Bignum number, unsigned short modulus);
272 Bignum bignum_add_long(Bignum number, unsigned long addend);
273 Bignum bigmul(Bignum a, Bignum b);
274 Bignum bigmuladd(Bignum a, Bignum b, Bignum addend);
275 Bignum bigdiv(Bignum a, Bignum b);
276 Bignum bigmod(Bignum a, Bignum b);
277 Bignum modinv(Bignum number, Bignum modulus);
278 Bignum bignum_bitmask(Bignum number);
279 Bignum bignum_rshift(Bignum number, int shift);
280 int bignum_cmp(Bignum a, Bignum b);
281 char *bignum_decimal(Bignum x);
283 void dh_setup_group1(void);
284 void dh_setup_group(Bignum pval, Bignum gval);
285 void dh_cleanup(void);
286 Bignum dh_create_e(int nbits);
287 Bignum dh_find_K(Bignum f);
289 int loadrsakey(char *filename, struct RSAKey *key, char *passphrase);
290 int rsakey_encrypted(char *filename, char **comment);
291 int rsakey_pubblob(char *filename, void **blob, int *bloblen);
293 int saversakey(char *filename, struct RSAKey *key, char *passphrase);
295 void base64_encode_atom(unsigned char *data, int n, char *out);
297 /* ssh2_load_userkey can return this as an error */
298 extern struct ssh2_userkey ssh2_wrong_passphrase;
299 #define SSH2_WRONG_PASSPHRASE (&ssh2_wrong_passphrase)
301 int ssh2_userkey_encrypted(char *filename, char **comment);
302 struct ssh2_userkey *ssh2_load_userkey(char *filename, char *passphrase);
303 char *ssh2_userkey_loadpub(char *filename, char **algorithm,
305 int ssh2_save_userkey(char *filename, struct ssh2_userkey *key,
309 SSH_KEYTYPE_UNOPENABLE,
311 SSH_KEYTYPE_SSH1, SSH_KEYTYPE_SSH2,
312 SSH_KEYTYPE_OPENSSH, SSH_KEYTYPE_SSHCOM
314 int key_type(char *filename);
315 char *key_type_to_str(int type);
317 int import_possible(int type);
318 int import_target_type(int type);
319 int import_encrypted(char *filename, int type, char **comment);
320 int import_ssh1(char *filename, int type, struct RSAKey *key,char *passphrase);
321 struct ssh2_userkey *import_ssh2(char *filename, int type, char *passphrase);
322 int export_ssh1(char *filename, int type, struct RSAKey *key,char *passphrase);
323 int export_ssh2(char *filename, int type,
324 struct ssh2_userkey *key, char *passphrase);
326 void des3_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len);
327 void des3_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len);
328 void des3_decrypt_pubkey_ossh(unsigned char *key, unsigned char *iv,
329 unsigned char *blk, int len);
330 void des3_encrypt_pubkey_ossh(unsigned char *key, unsigned char *iv,
331 unsigned char *blk, int len);
332 void aes256_encrypt_pubkey(unsigned char *key, unsigned char *blk,
334 void aes256_decrypt_pubkey(unsigned char *key, unsigned char *blk,
338 * For progress updates in the key generation utility.
340 #define PROGFN_INITIALISE 1
341 #define PROGFN_LIN_PHASE 2
342 #define PROGFN_EXP_PHASE 3
343 #define PROGFN_PHASE_EXTENT 4
344 #define PROGFN_READY 5
345 #define PROGFN_PROGRESS 6
346 typedef void (*progfn_t) (void *param, int action, int phase, int progress);
348 int rsa_generate(struct RSAKey *key, int bits, progfn_t pfn,
350 int dsa_generate(struct dss_key *key, int bits, progfn_t pfn,
352 Bignum primegen(int bits, int modulus, int residue, Bignum factor,
353 int phase, progfn_t pfn, void *pfnparam);
359 void zlib_compress_init(void);
360 void zlib_decompress_init(void);
361 int zlib_compress_block(unsigned char *block, int len,
362 unsigned char **outblock, int *outlen);
363 int zlib_decompress_block(unsigned char *block, int len,
364 unsigned char **outblock, int *outlen);
367 * SSH1 agent messages.
369 #define SSH1_AGENTC_REQUEST_RSA_IDENTITIES 1
370 #define SSH1_AGENT_RSA_IDENTITIES_ANSWER 2
371 #define SSH1_AGENTC_RSA_CHALLENGE 3
372 #define SSH1_AGENT_RSA_RESPONSE 4
373 #define SSH1_AGENTC_ADD_RSA_IDENTITY 7
374 #define SSH1_AGENTC_REMOVE_RSA_IDENTITY 8
375 #define SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 /* openssh private? */
378 * Messages common to SSH1 and OpenSSH's SSH2.
380 #define SSH_AGENT_FAILURE 5
381 #define SSH_AGENT_SUCCESS 6
384 * OpenSSH's SSH2 agent messages.
386 #define SSH2_AGENTC_REQUEST_IDENTITIES 11
387 #define SSH2_AGENT_IDENTITIES_ANSWER 12
388 #define SSH2_AGENTC_SIGN_REQUEST 13
389 #define SSH2_AGENT_SIGN_RESPONSE 14
390 #define SSH2_AGENTC_ADD_IDENTITY 17
391 #define SSH2_AGENTC_REMOVE_IDENTITY 18
392 #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19
395 * Need this to warn about support for the original SSH2 keyfile
398 void old_keyfile_warning(void);