| 1 | #include <stdio.h> |
| 2 | #include <string.h> |
| 3 | |
| 4 | #include "puttymem.h" |
| 5 | #include "tree234.h" |
| 6 | #include "network.h" |
| 7 | #include "int64.h" |
| 8 | #include "misc.h" |
| 9 | |
| 10 | struct ssh_channel; |
| 11 | |
| 12 | extern void sshfwd_close(struct ssh_channel *c); |
| 13 | extern int sshfwd_write(struct ssh_channel *c, char *, int); |
| 14 | extern void sshfwd_unthrottle(struct ssh_channel *c, int bufsize); |
| 15 | |
| 16 | /* |
| 17 | * Useful thing. |
| 18 | */ |
| 19 | #ifndef lenof |
| 20 | #define lenof(x) ( (sizeof((x))) / (sizeof(*(x)))) |
| 21 | #endif |
| 22 | |
| 23 | #define SSH_CIPHER_IDEA 1 |
| 24 | #define SSH_CIPHER_DES 2 |
| 25 | #define SSH_CIPHER_3DES 3 |
| 26 | #define SSH_CIPHER_BLOWFISH 6 |
| 27 | |
| 28 | #ifdef MSCRYPTOAPI |
| 29 | #define APIEXTRA 8 |
| 30 | #else |
| 31 | #define APIEXTRA 0 |
| 32 | #endif |
| 33 | |
| 34 | #ifndef BIGNUM_INTERNAL |
| 35 | typedef void *Bignum; |
| 36 | #endif |
| 37 | |
| 38 | struct RSAKey { |
| 39 | int bits; |
| 40 | int bytes; |
| 41 | #ifdef MSCRYPTOAPI |
| 42 | unsigned long exponent; |
| 43 | unsigned char *modulus; |
| 44 | #else |
| 45 | Bignum modulus; |
| 46 | Bignum exponent; |
| 47 | Bignum private_exponent; |
| 48 | Bignum p; |
| 49 | Bignum q; |
| 50 | Bignum iqmp; |
| 51 | #endif |
| 52 | char *comment; |
| 53 | }; |
| 54 | |
| 55 | struct dss_key { |
| 56 | Bignum p, q, g, y, x; |
| 57 | }; |
| 58 | |
| 59 | int makekey(unsigned char *data, int len, struct RSAKey *result, |
| 60 | unsigned char **keystr, int order); |
| 61 | int makeprivate(unsigned char *data, int len, struct RSAKey *result); |
| 62 | int rsaencrypt(unsigned char *data, int length, struct RSAKey *key); |
| 63 | Bignum rsadecrypt(Bignum input, struct RSAKey *key); |
| 64 | void rsasign(unsigned char *data, int length, struct RSAKey *key); |
| 65 | void rsasanitise(struct RSAKey *key); |
| 66 | int rsastr_len(struct RSAKey *key); |
| 67 | void rsastr_fmt(char *str, struct RSAKey *key); |
| 68 | void rsa_fingerprint(char *str, int len, struct RSAKey *key); |
| 69 | int rsa_verify(struct RSAKey *key); |
| 70 | unsigned char *rsa_public_blob(struct RSAKey *key, int *len); |
| 71 | int rsa_public_blob_len(void *data, int maxlen); |
| 72 | void freersakey(struct RSAKey *key); |
| 73 | |
| 74 | typedef unsigned int word32; |
| 75 | typedef unsigned int uint32; |
| 76 | |
| 77 | unsigned long crc32_compute(const void *s, size_t len); |
| 78 | unsigned long crc32_update(unsigned long crc_input, const void *s, size_t len); |
| 79 | |
| 80 | /* SSH CRC compensation attack detector */ |
| 81 | void *crcda_make_context(void); |
| 82 | void crcda_free_context(void *handle); |
| 83 | int detect_attack(void *handle, unsigned char *buf, uint32 len, |
| 84 | unsigned char *IV); |
| 85 | |
| 86 | /* |
| 87 | * SSH2 RSA key exchange functions |
| 88 | */ |
| 89 | struct ssh_hash; |
| 90 | void *ssh_rsakex_newkey(char *data, int len); |
| 91 | void ssh_rsakex_freekey(void *key); |
| 92 | int ssh_rsakex_klen(void *key); |
| 93 | void ssh_rsakex_encrypt(const struct ssh_hash *h, unsigned char *in, int inlen, |
| 94 | unsigned char *out, int outlen, |
| 95 | void *key); |
| 96 | |
| 97 | typedef struct { |
| 98 | uint32 h[4]; |
| 99 | } MD5_Core_State; |
| 100 | |
| 101 | struct MD5Context { |
| 102 | #ifdef MSCRYPTOAPI |
| 103 | unsigned long hHash; |
| 104 | #else |
| 105 | MD5_Core_State core; |
| 106 | unsigned char block[64]; |
| 107 | int blkused; |
| 108 | uint32 lenhi, lenlo; |
| 109 | #endif |
| 110 | }; |
| 111 | |
| 112 | void MD5Init(struct MD5Context *context); |
| 113 | void MD5Update(struct MD5Context *context, unsigned char const *buf, |
| 114 | unsigned len); |
| 115 | void MD5Final(unsigned char digest[16], struct MD5Context *context); |
| 116 | void MD5Simple(void const *p, unsigned len, unsigned char output[16]); |
| 117 | |
| 118 | void *hmacmd5_make_context(void); |
| 119 | void hmacmd5_free_context(void *handle); |
| 120 | void hmacmd5_key(void *handle, void const *key, int len); |
| 121 | void hmacmd5_do_hmac(void *handle, unsigned char const *blk, int len, |
| 122 | unsigned char *hmac); |
| 123 | |
| 124 | typedef struct { |
| 125 | uint32 h[5]; |
| 126 | unsigned char block[64]; |
| 127 | int blkused; |
| 128 | uint32 lenhi, lenlo; |
| 129 | } SHA_State; |
| 130 | void SHA_Init(SHA_State * s); |
| 131 | void SHA_Bytes(SHA_State * s, void *p, int len); |
| 132 | void SHA_Final(SHA_State * s, unsigned char *output); |
| 133 | void SHA_Simple(void *p, int len, unsigned char *output); |
| 134 | |
| 135 | void hmac_sha1_simple(void *key, int keylen, void *data, int datalen, |
| 136 | unsigned char *output); |
| 137 | typedef struct { |
| 138 | uint32 h[8]; |
| 139 | unsigned char block[64]; |
| 140 | int blkused; |
| 141 | uint32 lenhi, lenlo; |
| 142 | } SHA256_State; |
| 143 | void SHA256_Init(SHA256_State * s); |
| 144 | void SHA256_Bytes(SHA256_State * s, const void *p, int len); |
| 145 | void SHA256_Final(SHA256_State * s, unsigned char *output); |
| 146 | void SHA256_Simple(const void *p, int len, unsigned char *output); |
| 147 | |
| 148 | typedef struct { |
| 149 | uint64 h[8]; |
| 150 | unsigned char block[128]; |
| 151 | int blkused; |
| 152 | uint32 len[4]; |
| 153 | } SHA512_State; |
| 154 | void SHA512_Init(SHA512_State * s); |
| 155 | void SHA512_Bytes(SHA512_State * s, const void *p, int len); |
| 156 | void SHA512_Final(SHA512_State * s, unsigned char *output); |
| 157 | void SHA512_Simple(const void *p, int len, unsigned char *output); |
| 158 | |
| 159 | struct ssh_cipher { |
| 160 | void *(*make_context)(void); |
| 161 | void (*free_context)(void *); |
| 162 | void (*sesskey) (void *, unsigned char *key); /* for SSH-1 */ |
| 163 | void (*encrypt) (void *, unsigned char *blk, int len); |
| 164 | void (*decrypt) (void *, unsigned char *blk, int len); |
| 165 | int blksize; |
| 166 | char *text_name; |
| 167 | }; |
| 168 | |
| 169 | struct ssh2_cipher { |
| 170 | void *(*make_context)(void); |
| 171 | void (*free_context)(void *); |
| 172 | void (*setiv) (void *, unsigned char *key); /* for SSH-2 */ |
| 173 | void (*setkey) (void *, unsigned char *key);/* for SSH-2 */ |
| 174 | void (*encrypt) (void *, unsigned char *blk, int len); |
| 175 | void (*decrypt) (void *, unsigned char *blk, int len); |
| 176 | char *name; |
| 177 | int blksize; |
| 178 | int keylen; |
| 179 | unsigned int flags; |
| 180 | #define SSH_CIPHER_IS_CBC 1 |
| 181 | char *text_name; |
| 182 | }; |
| 183 | |
| 184 | struct ssh2_ciphers { |
| 185 | int nciphers; |
| 186 | const struct ssh2_cipher *const *list; |
| 187 | }; |
| 188 | |
| 189 | struct ssh_mac { |
| 190 | void *(*make_context)(void); |
| 191 | void (*free_context)(void *); |
| 192 | void (*setkey) (void *, unsigned char *key); |
| 193 | void (*generate) (void *, unsigned char *blk, int len, unsigned long seq); |
| 194 | int (*verify) (void *, unsigned char *blk, int len, unsigned long seq); |
| 195 | char *name; |
| 196 | int len; |
| 197 | char *text_name; |
| 198 | }; |
| 199 | |
| 200 | struct ssh_hash { |
| 201 | void *(*init)(void); /* also allocates context */ |
| 202 | void (*bytes)(void *, void *, int); |
| 203 | void (*final)(void *, unsigned char *); /* also frees context */ |
| 204 | int hlen; /* output length in bytes */ |
| 205 | char *text_name; |
| 206 | }; |
| 207 | |
| 208 | struct ssh_kex { |
| 209 | char *name, *groupname; |
| 210 | enum { KEXTYPE_DH, KEXTYPE_RSA } main_type; |
| 211 | /* For DH */ |
| 212 | const unsigned char *pdata, *gdata; /* NULL means group exchange */ |
| 213 | int plen, glen; |
| 214 | const struct ssh_hash *hash; |
| 215 | }; |
| 216 | |
| 217 | struct ssh_kexes { |
| 218 | int nkexes; |
| 219 | const struct ssh_kex *const *list; |
| 220 | }; |
| 221 | |
| 222 | struct ssh_signkey { |
| 223 | void *(*newkey) (char *data, int len); |
| 224 | void (*freekey) (void *key); |
| 225 | char *(*fmtkey) (void *key); |
| 226 | unsigned char *(*public_blob) (void *key, int *len); |
| 227 | unsigned char *(*private_blob) (void *key, int *len); |
| 228 | void *(*createkey) (unsigned char *pub_blob, int pub_len, |
| 229 | unsigned char *priv_blob, int priv_len); |
| 230 | void *(*openssh_createkey) (unsigned char **blob, int *len); |
| 231 | int (*openssh_fmtkey) (void *key, unsigned char *blob, int len); |
| 232 | int (*pubkey_bits) (void *blob, int len); |
| 233 | char *(*fingerprint) (void *key); |
| 234 | int (*verifysig) (void *key, char *sig, int siglen, |
| 235 | char *data, int datalen); |
| 236 | unsigned char *(*sign) (void *key, char *data, int datalen, |
| 237 | int *siglen); |
| 238 | char *name; |
| 239 | char *keytype; /* for host key cache */ |
| 240 | }; |
| 241 | |
| 242 | struct ssh_compress { |
| 243 | char *name; |
| 244 | void *(*compress_init) (void); |
| 245 | void (*compress_cleanup) (void *); |
| 246 | int (*compress) (void *, unsigned char *block, int len, |
| 247 | unsigned char **outblock, int *outlen); |
| 248 | void *(*decompress_init) (void); |
| 249 | void (*decompress_cleanup) (void *); |
| 250 | int (*decompress) (void *, unsigned char *block, int len, |
| 251 | unsigned char **outblock, int *outlen); |
| 252 | int (*disable_compression) (void *); |
| 253 | char *text_name; |
| 254 | }; |
| 255 | |
| 256 | struct ssh2_userkey { |
| 257 | const struct ssh_signkey *alg; /* the key algorithm */ |
| 258 | void *data; /* the key data */ |
| 259 | char *comment; /* the key comment */ |
| 260 | }; |
| 261 | |
| 262 | /* The maximum length of any hash algorithm used in kex. (bytes) */ |
| 263 | #define SSH2_KEX_MAX_HASH_LEN (32) /* SHA-256 */ |
| 264 | |
| 265 | extern const struct ssh_cipher ssh_3des; |
| 266 | extern const struct ssh_cipher ssh_des; |
| 267 | extern const struct ssh_cipher ssh_blowfish_ssh1; |
| 268 | extern const struct ssh2_ciphers ssh2_3des; |
| 269 | extern const struct ssh2_ciphers ssh2_des; |
| 270 | extern const struct ssh2_ciphers ssh2_aes; |
| 271 | extern const struct ssh2_ciphers ssh2_blowfish; |
| 272 | extern const struct ssh2_ciphers ssh2_arcfour; |
| 273 | extern const struct ssh_hash ssh_sha1; |
| 274 | extern const struct ssh_hash ssh_sha256; |
| 275 | extern const struct ssh_kexes ssh_diffiehellman_group1; |
| 276 | extern const struct ssh_kexes ssh_diffiehellman_group14; |
| 277 | extern const struct ssh_kexes ssh_diffiehellman_gex; |
| 278 | extern const struct ssh_kexes ssh_rsa_kex; |
| 279 | extern const struct ssh_signkey ssh_dss; |
| 280 | extern const struct ssh_signkey ssh_rsa; |
| 281 | extern const struct ssh_mac ssh_hmac_md5; |
| 282 | extern const struct ssh_mac ssh_hmac_sha1; |
| 283 | extern const struct ssh_mac ssh_hmac_sha1_buggy; |
| 284 | extern const struct ssh_mac ssh_hmac_sha1_96; |
| 285 | extern const struct ssh_mac ssh_hmac_sha1_96_buggy; |
| 286 | |
| 287 | |
| 288 | /* |
| 289 | * PuTTY version number formatted as an SSH version string. |
| 290 | */ |
| 291 | extern char sshver[]; |
| 292 | |
| 293 | /* |
| 294 | * Gross hack: pscp will try to start SFTP but fall back to scp1 if |
| 295 | * that fails. This variable is the means by which scp.c can reach |
| 296 | * into the SSH code and find out which one it got. |
| 297 | */ |
| 298 | extern int ssh_fallback_cmd(void *handle); |
| 299 | |
| 300 | #ifndef MSCRYPTOAPI |
| 301 | void SHATransform(word32 * digest, word32 * data); |
| 302 | #endif |
| 303 | |
| 304 | int random_byte(void); |
| 305 | void random_add_noise(void *noise, int length); |
| 306 | void random_add_heavynoise(void *noise, int length); |
| 307 | |
| 308 | void logevent(void *, const char *); |
| 309 | |
| 310 | /* Allocate and register a new channel for port forwarding */ |
| 311 | void *new_sock_channel(void *handle, Socket s); |
| 312 | void ssh_send_port_open(void *channel, char *hostname, int port, char *org); |
| 313 | |
| 314 | /* Exports from portfwd.c */ |
| 315 | extern const char *pfd_newconnect(Socket * s, char *hostname, int port, |
| 316 | void *c, const Config *cfg, |
| 317 | int addressfamily); |
| 318 | /* desthost == NULL indicates dynamic (SOCKS) port forwarding */ |
| 319 | extern const char *pfd_addforward(char *desthost, int destport, char *srcaddr, |
| 320 | int port, void *backhandle, |
| 321 | const Config *cfg, void **sockdata, |
| 322 | int address_family); |
| 323 | extern void pfd_close(Socket s); |
| 324 | extern void pfd_terminate(void *sockdata); |
| 325 | extern int pfd_send(Socket s, char *data, int len); |
| 326 | extern void pfd_confirm(Socket s); |
| 327 | extern void pfd_unthrottle(Socket s); |
| 328 | extern void pfd_override_throttle(Socket s, int enable); |
| 329 | |
| 330 | /* Exports from x11fwd.c */ |
| 331 | enum { |
| 332 | X11_TRANS_IPV4 = 0, X11_TRANS_IPV6 = 6, X11_TRANS_UNIX = 256 |
| 333 | }; |
| 334 | struct X11Display { |
| 335 | /* Broken-down components of the display name itself */ |
| 336 | int unixdomain; |
| 337 | char *hostname; |
| 338 | int displaynum; |
| 339 | int screennum; |
| 340 | /* OSX sometimes replaces all the above with a full Unix-socket pathname */ |
| 341 | char *unixsocketpath; |
| 342 | |
| 343 | /* PuTTY networking SockAddr to connect to the display, and associated |
| 344 | * gubbins */ |
| 345 | SockAddr addr; |
| 346 | int port; |
| 347 | char *realhost; |
| 348 | |
| 349 | /* Auth details we invented for the virtual display on the SSH server. */ |
| 350 | int remoteauthproto; |
| 351 | unsigned char *remoteauthdata; |
| 352 | int remoteauthdatalen; |
| 353 | char *remoteauthprotoname; |
| 354 | char *remoteauthdatastring; |
| 355 | |
| 356 | /* Our local auth details for talking to the real X display. */ |
| 357 | int localauthproto; |
| 358 | unsigned char *localauthdata; |
| 359 | int localauthdatalen; |
| 360 | |
| 361 | /* |
| 362 | * Used inside x11fwd.c to remember recently seen |
| 363 | * XDM-AUTHORIZATION-1 strings, to avoid replay attacks. |
| 364 | */ |
| 365 | tree234 *xdmseen; |
| 366 | }; |
| 367 | /* |
| 368 | * x11_setup_display() parses the display variable and fills in an |
| 369 | * X11Display structure. Some remote auth details are invented; |
| 370 | * the supplied authtype parameter configures the preferred |
| 371 | * authorisation protocol to use at the remote end. The local auth |
| 372 | * details are looked up by calling platform_get_x11_auth. |
| 373 | */ |
| 374 | extern struct X11Display *x11_setup_display(char *display, int authtype, |
| 375 | const Config *); |
| 376 | void x11_free_display(struct X11Display *disp); |
| 377 | extern const char *x11_init(Socket *, struct X11Display *, void *, |
| 378 | const char *, int, const Config *); |
| 379 | extern void x11_close(Socket); |
| 380 | extern int x11_send(Socket, char *, int); |
| 381 | extern void x11_unthrottle(Socket s); |
| 382 | extern void x11_override_throttle(Socket s, int enable); |
| 383 | char *x11_display(const char *display); |
| 384 | /* Platform-dependent X11 functions */ |
| 385 | extern void platform_get_x11_auth(struct X11Display *display, |
| 386 | const Config *); |
| 387 | /* examine a mostly-filled-in X11Display and fill in localauth* */ |
| 388 | extern const int platform_uses_x11_unix_by_default; |
| 389 | /* choose default X transport in the absence of a specified one */ |
| 390 | SockAddr platform_get_x11_unix_address(const char *path, int displaynum); |
| 391 | /* make up a SockAddr naming the address for displaynum */ |
| 392 | char *platform_get_x_display(void); |
| 393 | /* allocated local X display string, if any */ |
| 394 | /* Callbacks in x11.c usable _by_ platform X11 functions */ |
| 395 | /* |
| 396 | * This function does the job of platform_get_x11_auth, provided |
| 397 | * it is told where to find a normally formatted .Xauthority file: |
| 398 | * it opens that file, parses it to find an auth record which |
| 399 | * matches the display details in "display", and fills in the |
| 400 | * localauth fields. |
| 401 | * |
| 402 | * It is expected that most implementations of |
| 403 | * platform_get_x11_auth() will work by finding their system's |
| 404 | * .Xauthority file, adjusting the display details if necessary |
| 405 | * for local oddities like Unix-domain socket transport, and |
| 406 | * calling this function to do the rest of the work. |
| 407 | */ |
| 408 | void x11_get_auth_from_authfile(struct X11Display *display, |
| 409 | const char *authfilename); |
| 410 | |
| 411 | Bignum copybn(Bignum b); |
| 412 | Bignum bn_power_2(int n); |
| 413 | void bn_restore_invariant(Bignum b); |
| 414 | Bignum bignum_from_long(unsigned long n); |
| 415 | void freebn(Bignum b); |
| 416 | Bignum modpow(Bignum base, Bignum exp, Bignum mod); |
| 417 | Bignum modmul(Bignum a, Bignum b, Bignum mod); |
| 418 | void decbn(Bignum n); |
| 419 | extern Bignum Zero, One; |
| 420 | Bignum bignum_from_bytes(const unsigned char *data, int nbytes); |
| 421 | int ssh1_read_bignum(const unsigned char *data, int len, Bignum * result); |
| 422 | int bignum_bitcount(Bignum bn); |
| 423 | int ssh1_bignum_length(Bignum bn); |
| 424 | int ssh2_bignum_length(Bignum bn); |
| 425 | int bignum_byte(Bignum bn, int i); |
| 426 | int bignum_bit(Bignum bn, int i); |
| 427 | void bignum_set_bit(Bignum bn, int i, int value); |
| 428 | int ssh1_write_bignum(void *data, Bignum bn); |
| 429 | Bignum biggcd(Bignum a, Bignum b); |
| 430 | unsigned short bignum_mod_short(Bignum number, unsigned short modulus); |
| 431 | Bignum bignum_add_long(Bignum number, unsigned long addend); |
| 432 | Bignum bigmul(Bignum a, Bignum b); |
| 433 | Bignum bigmuladd(Bignum a, Bignum b, Bignum addend); |
| 434 | Bignum bigdiv(Bignum a, Bignum b); |
| 435 | Bignum bigmod(Bignum a, Bignum b); |
| 436 | Bignum modinv(Bignum number, Bignum modulus); |
| 437 | Bignum bignum_bitmask(Bignum number); |
| 438 | Bignum bignum_rshift(Bignum number, int shift); |
| 439 | int bignum_cmp(Bignum a, Bignum b); |
| 440 | char *bignum_decimal(Bignum x); |
| 441 | |
| 442 | #ifdef DEBUG |
| 443 | void diagbn(char *prefix, Bignum md); |
| 444 | #endif |
| 445 | |
| 446 | void *dh_setup_group(const struct ssh_kex *kex); |
| 447 | void *dh_setup_gex(Bignum pval, Bignum gval); |
| 448 | void dh_cleanup(void *); |
| 449 | Bignum dh_create_e(void *, int nbits); |
| 450 | Bignum dh_find_K(void *, Bignum f); |
| 451 | |
| 452 | int loadrsakey(const Filename *filename, struct RSAKey *key, |
| 453 | char *passphrase, const char **errorstr); |
| 454 | int rsakey_encrypted(const Filename *filename, char **comment); |
| 455 | int rsakey_pubblob(const Filename *filename, void **blob, int *bloblen, |
| 456 | char **commentptr, const char **errorstr); |
| 457 | |
| 458 | int saversakey(const Filename *filename, struct RSAKey *key, char *passphrase); |
| 459 | |
| 460 | extern int base64_decode_atom(char *atom, unsigned char *out); |
| 461 | extern int base64_lines(int datalen); |
| 462 | extern void base64_encode_atom(unsigned char *data, int n, char *out); |
| 463 | extern void base64_encode(FILE *fp, unsigned char *data, int datalen, int cpl); |
| 464 | |
| 465 | /* ssh2_load_userkey can return this as an error */ |
| 466 | extern struct ssh2_userkey ssh2_wrong_passphrase; |
| 467 | #define SSH2_WRONG_PASSPHRASE (&ssh2_wrong_passphrase) |
| 468 | |
| 469 | int ssh2_userkey_encrypted(const Filename *filename, char **comment); |
| 470 | struct ssh2_userkey *ssh2_load_userkey(const Filename *filename, |
| 471 | char *passphrase, const char **errorstr); |
| 472 | unsigned char *ssh2_userkey_loadpub(const Filename *filename, char **algorithm, |
| 473 | int *pub_blob_len, char **commentptr, |
| 474 | const char **errorstr); |
| 475 | int ssh2_save_userkey(const Filename *filename, struct ssh2_userkey *key, |
| 476 | char *passphrase); |
| 477 | const struct ssh_signkey *find_pubkey_alg(const char *name); |
| 478 | |
| 479 | enum { |
| 480 | SSH_KEYTYPE_UNOPENABLE, |
| 481 | SSH_KEYTYPE_UNKNOWN, |
| 482 | SSH_KEYTYPE_SSH1, SSH_KEYTYPE_SSH2, |
| 483 | SSH_KEYTYPE_OPENSSH, SSH_KEYTYPE_SSHCOM |
| 484 | }; |
| 485 | int key_type(const Filename *filename); |
| 486 | char *key_type_to_str(int type); |
| 487 | |
| 488 | int import_possible(int type); |
| 489 | int import_target_type(int type); |
| 490 | int import_encrypted(const Filename *filename, int type, char **comment); |
| 491 | int import_ssh1(const Filename *filename, int type, |
| 492 | struct RSAKey *key, char *passphrase, const char **errmsg_p); |
| 493 | struct ssh2_userkey *import_ssh2(const Filename *filename, int type, |
| 494 | char *passphrase, const char **errmsg_p); |
| 495 | int export_ssh1(const Filename *filename, int type, |
| 496 | struct RSAKey *key, char *passphrase); |
| 497 | int export_ssh2(const Filename *filename, int type, |
| 498 | struct ssh2_userkey *key, char *passphrase); |
| 499 | |
| 500 | void des3_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len); |
| 501 | void des3_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len); |
| 502 | void des3_decrypt_pubkey_ossh(unsigned char *key, unsigned char *iv, |
| 503 | unsigned char *blk, int len); |
| 504 | void des3_encrypt_pubkey_ossh(unsigned char *key, unsigned char *iv, |
| 505 | unsigned char *blk, int len); |
| 506 | void aes256_encrypt_pubkey(unsigned char *key, unsigned char *blk, |
| 507 | int len); |
| 508 | void aes256_decrypt_pubkey(unsigned char *key, unsigned char *blk, |
| 509 | int len); |
| 510 | |
| 511 | void des_encrypt_xdmauth(unsigned char *key, unsigned char *blk, int len); |
| 512 | void des_decrypt_xdmauth(unsigned char *key, unsigned char *blk, int len); |
| 513 | |
| 514 | /* |
| 515 | * For progress updates in the key generation utility. |
| 516 | */ |
| 517 | #define PROGFN_INITIALISE 1 |
| 518 | #define PROGFN_LIN_PHASE 2 |
| 519 | #define PROGFN_EXP_PHASE 3 |
| 520 | #define PROGFN_PHASE_EXTENT 4 |
| 521 | #define PROGFN_READY 5 |
| 522 | #define PROGFN_PROGRESS 6 |
| 523 | typedef void (*progfn_t) (void *param, int action, int phase, int progress); |
| 524 | |
| 525 | int rsa_generate(struct RSAKey *key, int bits, progfn_t pfn, |
| 526 | void *pfnparam); |
| 527 | int dsa_generate(struct dss_key *key, int bits, progfn_t pfn, |
| 528 | void *pfnparam); |
| 529 | Bignum primegen(int bits, int modulus, int residue, Bignum factor, |
| 530 | int phase, progfn_t pfn, void *pfnparam); |
| 531 | |
| 532 | |
| 533 | /* |
| 534 | * zlib compression. |
| 535 | */ |
| 536 | void *zlib_compress_init(void); |
| 537 | void zlib_compress_cleanup(void *); |
| 538 | void *zlib_decompress_init(void); |
| 539 | void zlib_decompress_cleanup(void *); |
| 540 | int zlib_compress_block(void *, unsigned char *block, int len, |
| 541 | unsigned char **outblock, int *outlen); |
| 542 | int zlib_decompress_block(void *, unsigned char *block, int len, |
| 543 | unsigned char **outblock, int *outlen); |
| 544 | |
| 545 | /* |
| 546 | * SSH-1 agent messages. |
| 547 | */ |
| 548 | #define SSH1_AGENTC_REQUEST_RSA_IDENTITIES 1 |
| 549 | #define SSH1_AGENT_RSA_IDENTITIES_ANSWER 2 |
| 550 | #define SSH1_AGENTC_RSA_CHALLENGE 3 |
| 551 | #define SSH1_AGENT_RSA_RESPONSE 4 |
| 552 | #define SSH1_AGENTC_ADD_RSA_IDENTITY 7 |
| 553 | #define SSH1_AGENTC_REMOVE_RSA_IDENTITY 8 |
| 554 | #define SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 /* openssh private? */ |
| 555 | |
| 556 | /* |
| 557 | * Messages common to SSH-1 and OpenSSH's SSH-2. |
| 558 | */ |
| 559 | #define SSH_AGENT_FAILURE 5 |
| 560 | #define SSH_AGENT_SUCCESS 6 |
| 561 | |
| 562 | /* |
| 563 | * OpenSSH's SSH-2 agent messages. |
| 564 | */ |
| 565 | #define SSH2_AGENTC_REQUEST_IDENTITIES 11 |
| 566 | #define SSH2_AGENT_IDENTITIES_ANSWER 12 |
| 567 | #define SSH2_AGENTC_SIGN_REQUEST 13 |
| 568 | #define SSH2_AGENT_SIGN_RESPONSE 14 |
| 569 | #define SSH2_AGENTC_ADD_IDENTITY 17 |
| 570 | #define SSH2_AGENTC_REMOVE_IDENTITY 18 |
| 571 | #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19 |
| 572 | |
| 573 | /* |
| 574 | * Need this to warn about support for the original SSH-2 keyfile |
| 575 | * format. |
| 576 | */ |
| 577 | void old_keyfile_warning(void); |