10 #define lenof(x) ( (sizeof((x))) / (sizeof(*(x))))
13 #define SSH_CIPHER_IDEA 1
14 #define SSH_CIPHER_DES 2
15 #define SSH_CIPHER_3DES 3
16 #define SSH_CIPHER_BLOWFISH 6
24 #ifndef BIGNUM_INTERNAL
32 unsigned long exponent
;
33 unsigned char *modulus
;
37 Bignum private_exponent
;
45 int makekey(unsigned char *data
, struct RSAKey
*result
,
46 unsigned char **keystr
, int order
);
47 int makeprivate(unsigned char *data
, struct RSAKey
*result
);
48 void rsaencrypt(unsigned char *data
, int length
, struct RSAKey
*key
);
49 Bignum
rsadecrypt(Bignum input
, struct RSAKey
*key
);
50 void rsasign(unsigned char *data
, int length
, struct RSAKey
*key
);
51 void rsasanitise(struct RSAKey
*key
);
52 int rsastr_len(struct RSAKey
*key
);
53 void rsastr_fmt(char *str
, struct RSAKey
*key
);
54 void rsa_fingerprint(char *str
, int len
, struct RSAKey
*key
);
55 int rsa_verify(struct RSAKey
*key
);
56 void freersakey(struct RSAKey
*key
);
58 typedef unsigned int word32
;
59 typedef unsigned int uint32
;
61 unsigned long crc32(const void *s
, size_t len
);
72 unsigned char block
[64];
78 void MD5Init(struct MD5Context
*context
);
79 void MD5Update(struct MD5Context
*context
, unsigned char const *buf
,
81 void MD5Final(unsigned char digest
[16], struct MD5Context
*context
);
85 unsigned char block
[64];
90 void SHA_Init(SHA_State
* s
);
91 void SHA_Bytes(SHA_State
* s
, void *p
, int len
);
92 void SHA_Final(SHA_State
* s
, unsigned char *output
);
93 void SHA_Simple(void *p
, int len
, unsigned char *output
);
96 void (*sesskey
) (unsigned char *key
); /* for ssh 1 */
97 void (*encrypt
) (unsigned char *blk
, int len
);
98 void (*decrypt
) (unsigned char *blk
, int len
);
103 void (*setcsiv
) (unsigned char *key
); /* for ssh 2 */
104 void (*setcskey
) (unsigned char *key
); /* for ssh 2 */
105 void (*setsciv
) (unsigned char *key
); /* for ssh 2 */
106 void (*setsckey
) (unsigned char *key
); /* for ssh 2 */
107 void (*encrypt
) (unsigned char *blk
, int len
);
108 void (*decrypt
) (unsigned char *blk
, int len
);
114 struct ssh2_ciphers
{
116 const struct ssh2_cipher
*const *list
;
120 void (*setcskey
) (unsigned char *key
);
121 void (*setsckey
) (unsigned char *key
);
122 void (*generate
) (unsigned char *blk
, int len
, unsigned long seq
);
123 int (*verify
) (unsigned char *blk
, int len
, unsigned long seq
);
130 * Plugging in another KEX algorithm requires structural chaos,
131 * so it's hard to abstract them into nice little structures
132 * like this. Hence, for the moment, this is just a
133 * placeholder. I claim justification in the fact that OpenSSH
140 void *(*newkey
) (char *data
, int len
);
141 void (*freekey
) (void *key
);
142 char *(*fmtkey
) (void *key
);
143 unsigned char *(*public_blob
) (void *key
, int *len
);
144 unsigned char *(*private_blob
) (void *key
, int *len
);
145 void *(*createkey
) (unsigned char *pub_blob
, int pub_len
,
146 unsigned char *priv_blob
, int priv_len
);
147 void *(*openssh_createkey
) (unsigned char **blob
, int *len
);
148 int (*openssh_fmtkey
) (void *key
, unsigned char *blob
, int len
);
149 char *(*fingerprint
) (void *key
);
150 int (*verifysig
) (void *key
, char *sig
, int siglen
,
151 char *data
, int datalen
);
152 unsigned char *(*sign
) (void *key
, char *data
, int datalen
,
155 char *keytype
; /* for host key cache */
158 struct ssh_compress
{
160 void (*compress_init
) (void);
161 int (*compress
) (unsigned char *block
, int len
,
162 unsigned char **outblock
, int *outlen
);
163 void (*decompress_init
) (void);
164 int (*decompress
) (unsigned char *block
, int len
,
165 unsigned char **outblock
, int *outlen
);
166 int (*disable_compression
) (void);
169 struct ssh2_userkey
{
170 const struct ssh_signkey
*alg
; /* the key algorithm */
171 void *data
; /* the key data */
172 char *comment
; /* the key comment */
175 extern const struct ssh_cipher ssh_3des
;
176 extern const struct ssh_cipher ssh_des
;
177 extern const struct ssh_cipher ssh_blowfish_ssh1
;
178 extern const struct ssh2_ciphers ssh2_3des
;
179 extern const struct ssh2_ciphers ssh2_aes
;
180 extern const struct ssh2_ciphers ssh2_blowfish
;
181 extern const struct ssh_kex ssh_diffiehellman
;
182 extern const struct ssh_kex ssh_diffiehellman_gex
;
183 extern const struct ssh_signkey ssh_dss
;
184 extern const struct ssh_signkey ssh_rsa
;
185 extern const struct ssh_mac ssh_md5
;
186 extern const struct ssh_mac ssh_sha1
;
187 extern const struct ssh_mac ssh_sha1_buggy
;
190 * PuTTY version number formatted as an SSH version string.
192 extern char sshver
[];
195 void SHATransform(word32
* digest
, word32
* data
);
198 int random_byte(void);
199 void random_add_noise(void *noise
, int length
);
200 void random_add_heavynoise(void *noise
, int length
);
202 void logevent(char *);
203 void *new_sock_channel(Socket s
); // allocates and register a new channel for port forwarding
204 void ssh_send_port_open(void *channel
, char *hostname
, int port
, char *org
);
206 Bignum
copybn(Bignum b
);
207 Bignum
bn_power_2(int n
);
208 void bn_restore_invariant(Bignum b
);
209 Bignum
bignum_from_short(unsigned short n
);
210 void freebn(Bignum b
);
211 Bignum
modpow(Bignum base
, Bignum exp
, Bignum mod
);
212 Bignum
modmul(Bignum a
, Bignum b
, Bignum mod
);
213 void decbn(Bignum n
);
214 extern Bignum Zero
, One
;
215 Bignum
bignum_from_bytes(unsigned char *data
, int nbytes
);
216 int ssh1_read_bignum(unsigned char *data
, Bignum
* result
);
217 int bignum_bitcount(Bignum bn
);
218 int ssh1_bignum_length(Bignum bn
);
219 int ssh2_bignum_length(Bignum bn
);
220 int bignum_byte(Bignum bn
, int i
);
221 int bignum_bit(Bignum bn
, int i
);
222 void bignum_set_bit(Bignum bn
, int i
, int value
);
223 int ssh1_write_bignum(void *data
, Bignum bn
);
224 Bignum
biggcd(Bignum a
, Bignum b
);
225 unsigned short bignum_mod_short(Bignum number
, unsigned short modulus
);
226 Bignum
bignum_add_long(Bignum number
, unsigned long addend
);
227 Bignum
bigmul(Bignum a
, Bignum b
);
228 Bignum
modinv(Bignum number
, Bignum modulus
);
229 Bignum
bignum_bitmask(Bignum number
);
230 Bignum
bignum_rshift(Bignum number
, int shift
);
231 int bignum_cmp(Bignum a
, Bignum b
);
232 char *bignum_decimal(Bignum x
);
234 void dh_setup_group1(void);
235 void dh_setup_group(Bignum pval
, Bignum gval
);
236 void dh_cleanup(void);
237 Bignum
dh_create_e(int nbits
);
238 Bignum
dh_find_K(Bignum f
);
240 int loadrsakey(char *filename
, struct RSAKey
*key
, char *passphrase
);
241 int rsakey_encrypted(char *filename
, char **comment
);
243 int saversakey(char *filename
, struct RSAKey
*key
, char *passphrase
);
245 void base64_encode_atom(unsigned char *data
, int n
, char *out
);
247 /* ssh2_load_userkey can return this as an error */
248 extern struct ssh2_userkey ssh2_wrong_passphrase
;
249 #define SSH2_WRONG_PASSPHRASE (&ssh2_wrong_passphrase)
251 int ssh2_userkey_encrypted(char *filename
, char **comment
);
252 struct ssh2_userkey
*ssh2_load_userkey(char *filename
, char *passphrase
);
253 char *ssh2_userkey_loadpub(char *filename
, char **algorithm
,
255 int ssh2_save_userkey(char *filename
, struct ssh2_userkey
*key
,
258 int keyfile_version(char *filename
);
260 void des3_decrypt_pubkey(unsigned char *key
, unsigned char *blk
, int len
);
261 void des3_encrypt_pubkey(unsigned char *key
, unsigned char *blk
, int len
);
262 void aes256_encrypt_pubkey(unsigned char *key
, unsigned char *blk
,
264 void aes256_decrypt_pubkey(unsigned char *key
, unsigned char *blk
,
268 * For progress updates in the key generation utility.
270 typedef void (*progfn_t
) (void *param
, int phase
, int progress
);
272 int rsa_generate(struct RSAKey
*key
, int bits
, progfn_t pfn
,
274 Bignum
primegen(int bits
, int modulus
, int residue
, int phase
,
275 progfn_t pfn
, void *pfnparam
);
281 void zlib_compress_init(void);
282 void zlib_decompress_init(void);
283 int zlib_compress_block(unsigned char *block
, int len
,
284 unsigned char **outblock
, int *outlen
);
285 int zlib_decompress_block(unsigned char *block
, int len
,
286 unsigned char **outblock
, int *outlen
);
289 * SSH1 agent messages.
291 #define SSH1_AGENTC_REQUEST_RSA_IDENTITIES 1
292 #define SSH1_AGENT_RSA_IDENTITIES_ANSWER 2
293 #define SSH1_AGENTC_RSA_CHALLENGE 3
294 #define SSH1_AGENT_RSA_RESPONSE 4
295 #define SSH1_AGENTC_ADD_RSA_IDENTITY 7
296 #define SSH1_AGENTC_REMOVE_RSA_IDENTITY 8
297 #define SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 /* openssh private? */
300 * Messages common to SSH1 and OpenSSH's SSH2.
302 #define SSH_AGENT_FAILURE 5
303 #define SSH_AGENT_SUCCESS 6
306 * OpenSSH's SSH2 agent messages.
308 #define SSH2_AGENTC_REQUEST_IDENTITIES 11
309 #define SSH2_AGENT_IDENTITIES_ANSWER 12
310 #define SSH2_AGENTC_SIGN_REQUEST 13
311 #define SSH2_AGENT_SIGN_RESPONSE 14
312 #define SSH2_AGENTC_ADD_IDENTITY 17
313 #define SSH2_AGENTC_REMOVE_IDENTITY 18
314 #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19