9 #define lenof(x) ( (sizeof((x))) / (sizeof(*(x))))
12 #define SSH_CIPHER_IDEA 1
13 #define SSH_CIPHER_DES 2
14 #define SSH_CIPHER_3DES 3
15 #define SSH_CIPHER_BLOWFISH 6
23 #ifndef BIGNUM_INTERNAL
31 unsigned long exponent;
32 unsigned char *modulus;
36 Bignum private_exponent;
44 int makekey(unsigned char *data, struct RSAKey *result,
45 unsigned char **keystr, int order);
46 int makeprivate(unsigned char *data, struct RSAKey *result);
47 void rsaencrypt(unsigned char *data, int length, struct RSAKey *key);
48 Bignum rsadecrypt(Bignum input, struct RSAKey *key);
49 void rsasign(unsigned char *data, int length, struct RSAKey *key);
50 void rsasanitise(struct RSAKey *key);
51 int rsastr_len(struct RSAKey *key);
52 void rsastr_fmt(char *str, struct RSAKey *key);
53 void rsa_fingerprint(char *str, int len, struct RSAKey *key);
54 int rsa_verify(struct RSAKey *key);
55 void freersakey(struct RSAKey *key);
57 typedef unsigned int word32;
58 typedef unsigned int uint32;
60 unsigned long crc32(const void *s, size_t len);
71 unsigned char block[64];
77 void MD5Init(struct MD5Context *context);
78 void MD5Update(struct MD5Context *context, unsigned char const *buf,
80 void MD5Final(unsigned char digest[16], struct MD5Context *context);
84 unsigned char block[64];
89 void SHA_Init(SHA_State * s);
90 void SHA_Bytes(SHA_State * s, void *p, int len);
91 void SHA_Final(SHA_State * s, unsigned char *output);
92 void SHA_Simple(void *p, int len, unsigned char *output);
95 void (*sesskey) (unsigned char *key); /* for ssh 1 */
96 void (*encrypt) (unsigned char *blk, int len);
97 void (*decrypt) (unsigned char *blk, int len);
102 void (*setcsiv) (unsigned char *key); /* for ssh 2 */
103 void (*setcskey) (unsigned char *key); /* for ssh 2 */
104 void (*setsciv) (unsigned char *key); /* for ssh 2 */
105 void (*setsckey) (unsigned char *key); /* for ssh 2 */
106 void (*encrypt) (unsigned char *blk, int len);
107 void (*decrypt) (unsigned char *blk, int len);
113 struct ssh2_ciphers {
115 const struct ssh2_cipher *const *list;
119 void (*setcskey) (unsigned char *key);
120 void (*setsckey) (unsigned char *key);
121 void (*generate) (unsigned char *blk, int len, unsigned long seq);
122 int (*verify) (unsigned char *blk, int len, unsigned long seq);
129 * Plugging in another KEX algorithm requires structural chaos,
130 * so it's hard to abstract them into nice little structures
131 * like this. Hence, for the moment, this is just a
132 * placeholder. I claim justification in the fact that OpenSSH
139 void *(*newkey) (char *data, int len);
140 void (*freekey) (void *key);
141 char *(*fmtkey) (void *key);
142 unsigned char *(*public_blob) (void *key, int *len);
143 unsigned char *(*private_blob) (void *key, int *len);
144 void *(*createkey) (unsigned char *pub_blob, int pub_len,
145 unsigned char *priv_blob, int priv_len);
146 void *(*openssh_createkey) (unsigned char **blob, int *len);
147 int (*openssh_fmtkey) (void *key, unsigned char *blob, int len);
148 char *(*fingerprint) (void *key);
149 int (*verifysig) (void *key, char *sig, int siglen,
150 char *data, int datalen);
151 unsigned char *(*sign) (void *key, char *data, int datalen,
154 char *keytype; /* for host key cache */
157 struct ssh_compress {
159 void (*compress_init) (void);
160 int (*compress) (unsigned char *block, int len,
161 unsigned char **outblock, int *outlen);
162 void (*decompress_init) (void);
163 int (*decompress) (unsigned char *block, int len,
164 unsigned char **outblock, int *outlen);
165 int (*disable_compression) (void);
168 struct ssh2_userkey {
169 const struct ssh_signkey *alg; /* the key algorithm */
170 void *data; /* the key data */
171 char *comment; /* the key comment */
174 extern const struct ssh_cipher ssh_3des;
175 extern const struct ssh_cipher ssh_des;
176 extern const struct ssh_cipher ssh_blowfish_ssh1;
177 extern const struct ssh2_ciphers ssh2_3des;
178 extern const struct ssh2_ciphers ssh2_aes;
179 extern const struct ssh2_ciphers ssh2_blowfish;
180 extern const struct ssh_kex ssh_diffiehellman;
181 extern const struct ssh_kex ssh_diffiehellman_gex;
182 extern const struct ssh_signkey ssh_dss;
183 extern const struct ssh_signkey ssh_rsa;
184 extern const struct ssh_mac ssh_md5;
185 extern const struct ssh_mac ssh_sha1;
186 extern const struct ssh_mac ssh_sha1_buggy;
189 * PuTTY version number formatted as an SSH version string.
191 extern char sshver[];
194 void SHATransform(word32 * digest, word32 * data);
197 int random_byte(void);
198 void random_add_noise(void *noise, int length);
199 void random_add_heavynoise(void *noise, int length);
201 void logevent(char *);
203 Bignum copybn(Bignum b);
204 Bignum bn_power_2(int n);
205 void bn_restore_invariant(Bignum b);
206 Bignum bignum_from_short(unsigned short n);
207 void freebn(Bignum b);
208 Bignum modpow(Bignum base, Bignum exp, Bignum mod);
209 Bignum modmul(Bignum a, Bignum b, Bignum mod);
210 void decbn(Bignum n);
211 extern Bignum Zero, One;
212 Bignum bignum_from_bytes(unsigned char *data, int nbytes);
213 int ssh1_read_bignum(unsigned char *data, Bignum * result);
214 int bignum_bitcount(Bignum bn);
215 int ssh1_bignum_length(Bignum bn);
216 int ssh2_bignum_length(Bignum bn);
217 int bignum_byte(Bignum bn, int i);
218 int bignum_bit(Bignum bn, int i);
219 void bignum_set_bit(Bignum bn, int i, int value);
220 int ssh1_write_bignum(void *data, Bignum bn);
221 Bignum biggcd(Bignum a, Bignum b);
222 unsigned short bignum_mod_short(Bignum number, unsigned short modulus);
223 Bignum bignum_add_long(Bignum number, unsigned long addend);
224 Bignum bigmul(Bignum a, Bignum b);
225 Bignum modinv(Bignum number, Bignum modulus);
226 Bignum bignum_bitmask(Bignum number);
227 Bignum bignum_rshift(Bignum number, int shift);
228 int bignum_cmp(Bignum a, Bignum b);
229 char *bignum_decimal(Bignum x);
231 void dh_setup_group1(void);
232 void dh_setup_group(Bignum pval, Bignum gval);
233 void dh_cleanup(void);
234 Bignum dh_create_e(int nbits);
235 Bignum dh_find_K(Bignum f);
237 int loadrsakey(char *filename, struct RSAKey *key, char *passphrase);
238 int rsakey_encrypted(char *filename, char **comment);
240 int saversakey(char *filename, struct RSAKey *key, char *passphrase);
242 void base64_encode_atom(unsigned char *data, int n, char *out);
244 /* ssh2_load_userkey can return this as an error */
245 extern struct ssh2_userkey ssh2_wrong_passphrase;
246 #define SSH2_WRONG_PASSPHRASE (&ssh2_wrong_passphrase)
248 int ssh2_userkey_encrypted(char *filename, char **comment);
249 struct ssh2_userkey *ssh2_load_userkey(char *filename, char *passphrase);
250 char *ssh2_userkey_loadpub(char *filename, char **algorithm,
252 int ssh2_save_userkey(char *filename, struct ssh2_userkey *key,
255 int keyfile_version(char *filename);
257 void des3_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len);
258 void des3_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len);
259 void aes256_encrypt_pubkey(unsigned char *key, unsigned char *blk,
261 void aes256_decrypt_pubkey(unsigned char *key, unsigned char *blk,
265 * For progress updates in the key generation utility.
267 typedef void (*progfn_t) (void *param, int phase, int progress);
269 int rsa_generate(struct RSAKey *key, int bits, progfn_t pfn,
271 Bignum primegen(int bits, int modulus, int residue, int phase,
272 progfn_t pfn, void *pfnparam);
277 void zlib_compress_init(void);
278 void zlib_decompress_init(void);
279 int zlib_compress_block(unsigned char *block, int len,
280 unsigned char **outblock, int *outlen);
281 int zlib_decompress_block(unsigned char *block, int len,
282 unsigned char **outblock, int *outlen);
285 * SSH1 agent messages.
287 #define SSH1_AGENTC_REQUEST_RSA_IDENTITIES 1
288 #define SSH1_AGENT_RSA_IDENTITIES_ANSWER 2
289 #define SSH1_AGENTC_RSA_CHALLENGE 3
290 #define SSH1_AGENT_RSA_RESPONSE 4
291 #define SSH1_AGENTC_ADD_RSA_IDENTITY 7
292 #define SSH1_AGENTC_REMOVE_RSA_IDENTITY 8
293 #define SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 /* openssh private? */
296 * Messages common to SSH1 and OpenSSH's SSH2.
298 #define SSH_AGENT_FAILURE 5
299 #define SSH_AGENT_SUCCESS 6
302 * OpenSSH's SSH2 agent messages.
304 #define SSH2_AGENTC_REQUEST_IDENTITIES 11
305 #define SSH2_AGENT_IDENTITIES_ANSWER 12
306 #define SSH2_AGENTC_SIGN_REQUEST 13
307 #define SSH2_AGENT_SIGN_RESPONSE 14
308 #define SSH2_AGENTC_ADD_IDENTITY 17
309 #define SSH2_AGENTC_REMOVE_IDENTITY 18
310 #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19