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 void freersakey(struct RSAKey
*key
);
69 typedef unsigned int word32
;
70 typedef unsigned int uint32
;
72 unsigned long crc32(const void *s
, size_t len
);
83 unsigned char block
[64];
89 void MD5Init(struct MD5Context
*context
);
90 void MD5Update(struct MD5Context
*context
, unsigned char const *buf
,
92 void MD5Final(unsigned char digest
[16], struct MD5Context
*context
);
96 unsigned char block
[64];
100 void SHA_Init(SHA_State
* s
);
101 void SHA_Bytes(SHA_State
* s
, void *p
, int len
);
102 void SHA_Final(SHA_State
* s
, unsigned char *output
);
103 void SHA_Simple(void *p
, int len
, unsigned char *output
);
105 void hmac_sha1_simple(void *key
, int keylen
, void *data
, int datalen
,
106 unsigned char *output
);
110 unsigned char block
[128];
114 void SHA512_Init(SHA512_State
* s
);
115 void SHA512_Bytes(SHA512_State
* s
, const void *p
, int len
);
116 void SHA512_Final(SHA512_State
* s
, unsigned char *output
);
117 void SHA512_Simple(const void *p
, int len
, unsigned char *output
);
120 void (*sesskey
) (unsigned char *key
); /* for ssh 1 */
121 void (*encrypt
) (unsigned char *blk
, int len
);
122 void (*decrypt
) (unsigned char *blk
, int len
);
127 void (*setcsiv
) (unsigned char *key
); /* for ssh 2 */
128 void (*setcskey
) (unsigned char *key
); /* for ssh 2 */
129 void (*setsciv
) (unsigned char *key
); /* for ssh 2 */
130 void (*setsckey
) (unsigned char *key
); /* for ssh 2 */
131 void (*encrypt
) (unsigned char *blk
, int len
);
132 void (*decrypt
) (unsigned char *blk
, int len
);
138 struct ssh2_ciphers
{
140 const struct ssh2_cipher
*const *list
;
144 void (*setcskey
) (unsigned char *key
);
145 void (*setsckey
) (unsigned char *key
);
146 void (*generate
) (unsigned char *blk
, int len
, unsigned long seq
);
147 int (*verify
) (unsigned char *blk
, int len
, unsigned long seq
);
154 * Plugging in another KEX algorithm requires structural chaos,
155 * so it's hard to abstract them into nice little structures
156 * like this. Hence, for the moment, this is just a
157 * placeholder. I claim justification in the fact that OpenSSH
164 void *(*newkey
) (char *data
, int len
);
165 void (*freekey
) (void *key
);
166 char *(*fmtkey
) (void *key
);
167 unsigned char *(*public_blob
) (void *key
, int *len
);
168 unsigned char *(*private_blob
) (void *key
, int *len
);
169 void *(*createkey
) (unsigned char *pub_blob
, int pub_len
,
170 unsigned char *priv_blob
, int priv_len
);
171 void *(*openssh_createkey
) (unsigned char **blob
, int *len
);
172 int (*openssh_fmtkey
) (void *key
, unsigned char *blob
, int len
);
173 char *(*fingerprint
) (void *key
);
174 int (*verifysig
) (void *key
, char *sig
, int siglen
,
175 char *data
, int datalen
);
176 unsigned char *(*sign
) (void *key
, char *data
, int datalen
,
179 char *keytype
; /* for host key cache */
182 struct ssh_compress
{
184 void (*compress_init
) (void);
185 int (*compress
) (unsigned char *block
, int len
,
186 unsigned char **outblock
, int *outlen
);
187 void (*decompress_init
) (void);
188 int (*decompress
) (unsigned char *block
, int len
,
189 unsigned char **outblock
, int *outlen
);
190 int (*disable_compression
) (void);
193 struct ssh2_userkey
{
194 const struct ssh_signkey
*alg
; /* the key algorithm */
195 void *data
; /* the key data */
196 char *comment
; /* the key comment */
199 extern const struct ssh_cipher ssh_3des
;
200 extern const struct ssh_cipher ssh_des
;
201 extern const struct ssh_cipher ssh_blowfish_ssh1
;
202 extern const struct ssh2_ciphers ssh2_3des
;
203 extern const struct ssh2_ciphers ssh2_des
;
204 extern const struct ssh2_ciphers ssh2_aes
;
205 extern const struct ssh2_ciphers ssh2_blowfish
;
206 extern const struct ssh_kex ssh_diffiehellman
;
207 extern const struct ssh_kex ssh_diffiehellman_gex
;
208 extern const struct ssh_signkey ssh_dss
;
209 extern const struct ssh_signkey ssh_rsa
;
210 extern const struct ssh_mac ssh_md5
;
211 extern const struct ssh_mac ssh_sha1
;
212 extern const struct ssh_mac ssh_sha1_buggy
;
215 * PuTTY version number formatted as an SSH version string.
217 extern char sshver
[];
220 * Gross hack: pscp will try to start SFTP but fall back to scp1 if
221 * that fails. This variable is the means by which scp.c can reach
222 * into the SSH code and find out which one it got.
224 extern int ssh_fallback_cmd
;
227 void SHATransform(word32
* digest
, word32
* data
);
230 int random_byte(void);
231 void random_add_noise(void *noise
, int length
);
232 void random_add_heavynoise(void *noise
, int length
);
234 void logevent(char *);
235 void *new_sock_channel(Socket s
); // allocates and register a new channel for port forwarding
236 void ssh_send_port_open(void *channel
, char *hostname
, int port
, char *org
);
238 Bignum
copybn(Bignum b
);
239 Bignum
bn_power_2(int n
);
240 void bn_restore_invariant(Bignum b
);
241 Bignum
bignum_from_long(unsigned long n
);
242 void freebn(Bignum b
);
243 Bignum
modpow(Bignum base
, Bignum exp
, Bignum mod
);
244 Bignum
modmul(Bignum a
, Bignum b
, Bignum mod
);
245 void decbn(Bignum n
);
246 extern Bignum Zero
, One
;
247 Bignum
bignum_from_bytes(unsigned char *data
, int nbytes
);
248 int ssh1_read_bignum(unsigned char *data
, Bignum
* result
);
249 int bignum_bitcount(Bignum bn
);
250 int ssh1_bignum_length(Bignum bn
);
251 int ssh2_bignum_length(Bignum bn
);
252 int bignum_byte(Bignum bn
, int i
);
253 int bignum_bit(Bignum bn
, int i
);
254 void bignum_set_bit(Bignum bn
, int i
, int value
);
255 int ssh1_write_bignum(void *data
, Bignum bn
);
256 Bignum
biggcd(Bignum a
, Bignum b
);
257 unsigned short bignum_mod_short(Bignum number
, unsigned short modulus
);
258 Bignum
bignum_add_long(Bignum number
, unsigned long addend
);
259 Bignum
bigmul(Bignum a
, Bignum b
);
260 Bignum
bigmuladd(Bignum a
, Bignum b
, Bignum addend
);
261 Bignum
bigdiv(Bignum a
, Bignum b
);
262 Bignum
bigmod(Bignum a
, Bignum b
);
263 Bignum
modinv(Bignum number
, Bignum modulus
);
264 Bignum
bignum_bitmask(Bignum number
);
265 Bignum
bignum_rshift(Bignum number
, int shift
);
266 int bignum_cmp(Bignum a
, Bignum b
);
267 char *bignum_decimal(Bignum x
);
269 void dh_setup_group1(void);
270 void dh_setup_group(Bignum pval
, Bignum gval
);
271 void dh_cleanup(void);
272 Bignum
dh_create_e(int nbits
);
273 Bignum
dh_find_K(Bignum f
);
275 int loadrsakey(char *filename
, struct RSAKey
*key
, char *passphrase
);
276 int rsakey_encrypted(char *filename
, char **comment
);
278 int saversakey(char *filename
, struct RSAKey
*key
, char *passphrase
);
280 void base64_encode_atom(unsigned char *data
, int n
, char *out
);
282 /* ssh2_load_userkey can return this as an error */
283 extern struct ssh2_userkey ssh2_wrong_passphrase
;
284 #define SSH2_WRONG_PASSPHRASE (&ssh2_wrong_passphrase)
286 int ssh2_userkey_encrypted(char *filename
, char **comment
);
287 struct ssh2_userkey
*ssh2_load_userkey(char *filename
, char *passphrase
);
288 char *ssh2_userkey_loadpub(char *filename
, char **algorithm
,
290 int ssh2_save_userkey(char *filename
, struct ssh2_userkey
*key
,
293 int keyfile_version(char *filename
);
295 void des3_decrypt_pubkey(unsigned char *key
, unsigned char *blk
, int len
);
296 void des3_encrypt_pubkey(unsigned char *key
, unsigned char *blk
, int len
);
297 void aes256_encrypt_pubkey(unsigned char *key
, unsigned char *blk
,
299 void aes256_decrypt_pubkey(unsigned char *key
, unsigned char *blk
,
303 * For progress updates in the key generation utility.
305 #define PROGFN_INITIALISE 1
306 #define PROGFN_LIN_PHASE 2
307 #define PROGFN_EXP_PHASE 3
308 #define PROGFN_PHASE_EXTENT 4
309 #define PROGFN_READY 5
310 #define PROGFN_PROGRESS 6
311 typedef void (*progfn_t
) (void *param
, int action
, int phase
, int progress
);
313 int rsa_generate(struct RSAKey
*key
, int bits
, progfn_t pfn
,
315 int dsa_generate(struct dss_key
*key
, int bits
, progfn_t pfn
,
317 Bignum
primegen(int bits
, int modulus
, int residue
, Bignum factor
,
318 int phase
, progfn_t pfn
, void *pfnparam
);
324 void zlib_compress_init(void);
325 void zlib_decompress_init(void);
326 int zlib_compress_block(unsigned char *block
, int len
,
327 unsigned char **outblock
, int *outlen
);
328 int zlib_decompress_block(unsigned char *block
, int len
,
329 unsigned char **outblock
, int *outlen
);
332 * SSH1 agent messages.
334 #define SSH1_AGENTC_REQUEST_RSA_IDENTITIES 1
335 #define SSH1_AGENT_RSA_IDENTITIES_ANSWER 2
336 #define SSH1_AGENTC_RSA_CHALLENGE 3
337 #define SSH1_AGENT_RSA_RESPONSE 4
338 #define SSH1_AGENTC_ADD_RSA_IDENTITY 7
339 #define SSH1_AGENTC_REMOVE_RSA_IDENTITY 8
340 #define SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 /* openssh private? */
343 * Messages common to SSH1 and OpenSSH's SSH2.
345 #define SSH_AGENT_FAILURE 5
346 #define SSH_AGENT_SUCCESS 6
349 * OpenSSH's SSH2 agent messages.
351 #define SSH2_AGENTC_REQUEST_IDENTITIES 11
352 #define SSH2_AGENT_IDENTITIES_ANSWER 12
353 #define SSH2_AGENTC_SIGN_REQUEST 13
354 #define SSH2_AGENT_SIGN_RESPONSE 14
355 #define SSH2_AGENTC_ADD_IDENTITY 17
356 #define SSH2_AGENTC_REMOVE_IDENTITY 18
357 #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19
360 * Need this to warn about support for the original SSH2 keyfile
363 void old_keyfile_warning(void);