| 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 int sshfwd_write(struct ssh_channel *c, char *, int); |
| 13 | extern void sshfwd_write_eof(struct ssh_channel *c); |
| 14 | extern void sshfwd_unclean_close(struct ssh_channel *c); |
| 15 | extern void sshfwd_unthrottle(struct ssh_channel *c, int bufsize); |
| 16 | |
| 17 | /* |
| 18 | * Useful thing. |
| 19 | */ |
| 20 | #ifndef lenof |
| 21 | #define lenof(x) ( (sizeof((x))) / (sizeof(*(x)))) |
| 22 | #endif |
| 23 | |
| 24 | #define SSH_CIPHER_IDEA 1 |
| 25 | #define SSH_CIPHER_DES 2 |
| 26 | #define SSH_CIPHER_3DES 3 |
| 27 | #define SSH_CIPHER_BLOWFISH 6 |
| 28 | |
| 29 | #ifdef MSCRYPTOAPI |
| 30 | #define APIEXTRA 8 |
| 31 | #else |
| 32 | #define APIEXTRA 0 |
| 33 | #endif |
| 34 | |
| 35 | #ifndef BIGNUM_INTERNAL |
| 36 | typedef void *Bignum; |
| 37 | #endif |
| 38 | |
| 39 | struct RSAKey { |
| 40 | int bits; |
| 41 | int bytes; |
| 42 | #ifdef MSCRYPTOAPI |
| 43 | unsigned long exponent; |
| 44 | unsigned char *modulus; |
| 45 | #else |
| 46 | Bignum modulus; |
| 47 | Bignum exponent; |
| 48 | Bignum private_exponent; |
| 49 | Bignum p; |
| 50 | Bignum q; |
| 51 | Bignum iqmp; |
| 52 | #endif |
| 53 | char *comment; |
| 54 | }; |
| 55 | |
| 56 | struct dss_key { |
| 57 | Bignum p, q, g, y, x; |
| 58 | }; |
| 59 | |
| 60 | int makekey(unsigned char *data, int len, struct RSAKey *result, |
| 61 | unsigned char **keystr, int order); |
| 62 | int makeprivate(unsigned char *data, int len, struct RSAKey *result); |
| 63 | int rsaencrypt(unsigned char *data, int length, struct RSAKey *key); |
| 64 | Bignum rsadecrypt(Bignum input, struct RSAKey *key); |
| 65 | void rsasign(unsigned char *data, int length, struct RSAKey *key); |
| 66 | void rsasanitise(struct RSAKey *key); |
| 67 | int rsastr_len(struct RSAKey *key); |
| 68 | void rsastr_fmt(char *str, struct RSAKey *key); |
| 69 | void rsa_fingerprint(char *str, int len, struct RSAKey *key); |
| 70 | int rsa_verify(struct RSAKey *key); |
| 71 | unsigned char *rsa_public_blob(struct RSAKey *key, int *len); |
| 72 | int rsa_public_blob_len(void *data, int maxlen); |
| 73 | void freersakey(struct RSAKey *key); |
| 74 | |
| 75 | #ifndef PUTTY_UINT32_DEFINED |
| 76 | /* This makes assumptions about the int type. */ |
| 77 | typedef unsigned int uint32; |
| 78 | #define PUTTY_UINT32_DEFINED |
| 79 | #endif |
| 80 | typedef uint32 word32; |
| 81 | |
| 82 | unsigned long crc32_compute(const void *s, size_t len); |
| 83 | unsigned long crc32_update(unsigned long crc_input, const void *s, size_t len); |
| 84 | |
| 85 | /* SSH CRC compensation attack detector */ |
| 86 | void *crcda_make_context(void); |
| 87 | void crcda_free_context(void *handle); |
| 88 | int detect_attack(void *handle, unsigned char *buf, uint32 len, |
| 89 | unsigned char *IV); |
| 90 | |
| 91 | /* |
| 92 | * SSH2 RSA key exchange functions |
| 93 | */ |
| 94 | struct ssh_hash; |
| 95 | void *ssh_rsakex_newkey(char *data, int len); |
| 96 | void ssh_rsakex_freekey(void *key); |
| 97 | int ssh_rsakex_klen(void *key); |
| 98 | void ssh_rsakex_encrypt(const struct ssh_hash *h, unsigned char *in, int inlen, |
| 99 | unsigned char *out, int outlen, |
| 100 | void *key); |
| 101 | |
| 102 | typedef struct { |
| 103 | uint32 h[4]; |
| 104 | } MD5_Core_State; |
| 105 | |
| 106 | struct MD5Context { |
| 107 | #ifdef MSCRYPTOAPI |
| 108 | unsigned long hHash; |
| 109 | #else |
| 110 | MD5_Core_State core; |
| 111 | unsigned char block[64]; |
| 112 | int blkused; |
| 113 | uint32 lenhi, lenlo; |
| 114 | #endif |
| 115 | }; |
| 116 | |
| 117 | void MD5Init(struct MD5Context *context); |
| 118 | void MD5Update(struct MD5Context *context, unsigned char const *buf, |
| 119 | unsigned len); |
| 120 | void MD5Final(unsigned char digest[16], struct MD5Context *context); |
| 121 | void MD5Simple(void const *p, unsigned len, unsigned char output[16]); |
| 122 | |
| 123 | void *hmacmd5_make_context(void); |
| 124 | void hmacmd5_free_context(void *handle); |
| 125 | void hmacmd5_key(void *handle, void const *key, int len); |
| 126 | void hmacmd5_do_hmac(void *handle, unsigned char const *blk, int len, |
| 127 | unsigned char *hmac); |
| 128 | |
| 129 | typedef struct { |
| 130 | uint32 h[5]; |
| 131 | unsigned char block[64]; |
| 132 | int blkused; |
| 133 | uint32 lenhi, lenlo; |
| 134 | } SHA_State; |
| 135 | void SHA_Init(SHA_State * s); |
| 136 | void SHA_Bytes(SHA_State * s, void *p, int len); |
| 137 | void SHA_Final(SHA_State * s, unsigned char *output); |
| 138 | void SHA_Simple(void *p, int len, unsigned char *output); |
| 139 | |
| 140 | void hmac_sha1_simple(void *key, int keylen, void *data, int datalen, |
| 141 | unsigned char *output); |
| 142 | typedef struct { |
| 143 | uint32 h[8]; |
| 144 | unsigned char block[64]; |
| 145 | int blkused; |
| 146 | uint32 lenhi, lenlo; |
| 147 | } SHA256_State; |
| 148 | void SHA256_Init(SHA256_State * s); |
| 149 | void SHA256_Bytes(SHA256_State * s, const void *p, int len); |
| 150 | void SHA256_Final(SHA256_State * s, unsigned char *output); |
| 151 | void SHA256_Simple(const void *p, int len, unsigned char *output); |
| 152 | |
| 153 | typedef struct { |
| 154 | uint64 h[8]; |
| 155 | unsigned char block[128]; |
| 156 | int blkused; |
| 157 | uint32 len[4]; |
| 158 | } SHA512_State; |
| 159 | void SHA512_Init(SHA512_State * s); |
| 160 | void SHA512_Bytes(SHA512_State * s, const void *p, int len); |
| 161 | void SHA512_Final(SHA512_State * s, unsigned char *output); |
| 162 | void SHA512_Simple(const void *p, int len, unsigned char *output); |
| 163 | |
| 164 | struct ssh_cipher { |
| 165 | void *(*make_context)(void); |
| 166 | void (*free_context)(void *); |
| 167 | void (*sesskey) (void *, unsigned char *key); /* for SSH-1 */ |
| 168 | void (*encrypt) (void *, unsigned char *blk, int len); |
| 169 | void (*decrypt) (void *, unsigned char *blk, int len); |
| 170 | int blksize; |
| 171 | char *text_name; |
| 172 | }; |
| 173 | |
| 174 | struct ssh2_cipher { |
| 175 | void *(*make_context)(void); |
| 176 | void (*free_context)(void *); |
| 177 | void (*setiv) (void *, unsigned char *key); /* for SSH-2 */ |
| 178 | void (*setkey) (void *, unsigned char *key);/* for SSH-2 */ |
| 179 | void (*encrypt) (void *, unsigned char *blk, int len); |
| 180 | void (*decrypt) (void *, unsigned char *blk, int len); |
| 181 | char *name; |
| 182 | int blksize; |
| 183 | int keylen; |
| 184 | unsigned int flags; |
| 185 | #define SSH_CIPHER_IS_CBC 1 |
| 186 | char *text_name; |
| 187 | }; |
| 188 | |
| 189 | struct ssh2_ciphers { |
| 190 | int nciphers; |
| 191 | const struct ssh2_cipher *const *list; |
| 192 | }; |
| 193 | |
| 194 | struct ssh_mac { |
| 195 | void *(*make_context)(void); |
| 196 | void (*free_context)(void *); |
| 197 | void (*setkey) (void *, unsigned char *key); |
| 198 | /* whole-packet operations */ |
| 199 | void (*generate) (void *, unsigned char *blk, int len, unsigned long seq); |
| 200 | int (*verify) (void *, unsigned char *blk, int len, unsigned long seq); |
| 201 | /* partial-packet operations */ |
| 202 | void (*start) (void *); |
| 203 | void (*bytes) (void *, unsigned char const *, int); |
| 204 | void (*genresult) (void *, unsigned char *); |
| 205 | int (*verresult) (void *, unsigned char const *); |
| 206 | char *name; |
| 207 | int len; |
| 208 | char *text_name; |
| 209 | }; |
| 210 | |
| 211 | struct ssh_hash { |
| 212 | void *(*init)(void); /* also allocates context */ |
| 213 | void (*bytes)(void *, void *, int); |
| 214 | void (*final)(void *, unsigned char *); /* also frees context */ |
| 215 | int hlen; /* output length in bytes */ |
| 216 | char *text_name; |
| 217 | }; |
| 218 | |
| 219 | struct ssh_kex { |
| 220 | char *name, *groupname; |
| 221 | enum { KEXTYPE_DH, KEXTYPE_RSA } main_type; |
| 222 | /* For DH */ |
| 223 | const unsigned char *pdata, *gdata; /* NULL means group exchange */ |
| 224 | int plen, glen; |
| 225 | const struct ssh_hash *hash; |
| 226 | }; |
| 227 | |
| 228 | struct ssh_kexes { |
| 229 | int nkexes; |
| 230 | const struct ssh_kex *const *list; |
| 231 | }; |
| 232 | |
| 233 | struct ssh_signkey { |
| 234 | void *(*newkey) (char *data, int len); |
| 235 | void (*freekey) (void *key); |
| 236 | char *(*fmtkey) (void *key); |
| 237 | unsigned char *(*public_blob) (void *key, int *len); |
| 238 | unsigned char *(*private_blob) (void *key, int *len); |
| 239 | void *(*createkey) (unsigned char *pub_blob, int pub_len, |
| 240 | unsigned char *priv_blob, int priv_len); |
| 241 | void *(*openssh_createkey) (unsigned char **blob, int *len); |
| 242 | int (*openssh_fmtkey) (void *key, unsigned char *blob, int len); |
| 243 | int (*pubkey_bits) (void *blob, int len); |
| 244 | char *(*fingerprint) (void *key); |
| 245 | int (*verifysig) (void *key, char *sig, int siglen, |
| 246 | char *data, int datalen); |
| 247 | unsigned char *(*sign) (void *key, char *data, int datalen, |
| 248 | int *siglen); |
| 249 | char *name; |
| 250 | char *keytype; /* for host key cache */ |
| 251 | }; |
| 252 | |
| 253 | struct ssh_compress { |
| 254 | char *name; |
| 255 | /* For zlib@openssh.com: if non-NULL, this name will be considered once |
| 256 | * userauth has completed successfully. */ |
| 257 | char *delayed_name; |
| 258 | void *(*compress_init) (void); |
| 259 | void (*compress_cleanup) (void *); |
| 260 | int (*compress) (void *, unsigned char *block, int len, |
| 261 | unsigned char **outblock, int *outlen); |
| 262 | void *(*decompress_init) (void); |
| 263 | void (*decompress_cleanup) (void *); |
| 264 | int (*decompress) (void *, unsigned char *block, int len, |
| 265 | unsigned char **outblock, int *outlen); |
| 266 | int (*disable_compression) (void *); |
| 267 | char *text_name; |
| 268 | }; |
| 269 | |
| 270 | struct ssh2_userkey { |
| 271 | const struct ssh_signkey *alg; /* the key algorithm */ |
| 272 | void *data; /* the key data */ |
| 273 | char *comment; /* the key comment */ |
| 274 | }; |
| 275 | |
| 276 | /* The maximum length of any hash algorithm used in kex. (bytes) */ |
| 277 | #define SSH2_KEX_MAX_HASH_LEN (32) /* SHA-256 */ |
| 278 | |
| 279 | extern const struct ssh_cipher ssh_3des; |
| 280 | extern const struct ssh_cipher ssh_des; |
| 281 | extern const struct ssh_cipher ssh_blowfish_ssh1; |
| 282 | extern const struct ssh2_ciphers ssh2_3des; |
| 283 | extern const struct ssh2_ciphers ssh2_des; |
| 284 | extern const struct ssh2_ciphers ssh2_aes; |
| 285 | extern const struct ssh2_ciphers ssh2_blowfish; |
| 286 | extern const struct ssh2_ciphers ssh2_arcfour; |
| 287 | extern const struct ssh_hash ssh_sha1; |
| 288 | extern const struct ssh_hash ssh_sha256; |
| 289 | extern const struct ssh_kexes ssh_diffiehellman_group1; |
| 290 | extern const struct ssh_kexes ssh_diffiehellman_group14; |
| 291 | extern const struct ssh_kexes ssh_diffiehellman_gex; |
| 292 | extern const struct ssh_kexes ssh_rsa_kex; |
| 293 | extern const struct ssh_signkey ssh_dss; |
| 294 | extern const struct ssh_signkey ssh_rsa; |
| 295 | extern const struct ssh_mac ssh_hmac_md5; |
| 296 | extern const struct ssh_mac ssh_hmac_sha1; |
| 297 | extern const struct ssh_mac ssh_hmac_sha1_buggy; |
| 298 | extern const struct ssh_mac ssh_hmac_sha1_96; |
| 299 | extern const struct ssh_mac ssh_hmac_sha1_96_buggy; |
| 300 | |
| 301 | void *aes_make_context(void); |
| 302 | void aes_free_context(void *handle); |
| 303 | void aes128_key(void *handle, unsigned char *key); |
| 304 | void aes192_key(void *handle, unsigned char *key); |
| 305 | void aes256_key(void *handle, unsigned char *key); |
| 306 | void aes_iv(void *handle, unsigned char *iv); |
| 307 | void aes_ssh2_encrypt_blk(void *handle, unsigned char *blk, int len); |
| 308 | void aes_ssh2_decrypt_blk(void *handle, unsigned char *blk, int len); |
| 309 | |
| 310 | /* |
| 311 | * PuTTY version number formatted as an SSH version string. |
| 312 | */ |
| 313 | extern char sshver[]; |
| 314 | |
| 315 | /* |
| 316 | * Gross hack: pscp will try to start SFTP but fall back to scp1 if |
| 317 | * that fails. This variable is the means by which scp.c can reach |
| 318 | * into the SSH code and find out which one it got. |
| 319 | */ |
| 320 | extern int ssh_fallback_cmd(void *handle); |
| 321 | |
| 322 | #ifndef MSCRYPTOAPI |
| 323 | void SHATransform(word32 * digest, word32 * data); |
| 324 | #endif |
| 325 | |
| 326 | int random_byte(void); |
| 327 | void random_add_noise(void *noise, int length); |
| 328 | void random_add_heavynoise(void *noise, int length); |
| 329 | |
| 330 | void logevent(void *, const char *); |
| 331 | |
| 332 | /* Allocate and register a new channel for port forwarding */ |
| 333 | void *new_sock_channel(void *handle, Socket s); |
| 334 | void ssh_send_port_open(void *channel, char *hostname, int port, char *org); |
| 335 | |
| 336 | /* Exports from portfwd.c */ |
| 337 | extern const char *pfd_newconnect(Socket * s, char *hostname, int port, |
| 338 | void *c, Conf *conf, int addressfamily); |
| 339 | /* desthost == NULL indicates dynamic (SOCKS) port forwarding */ |
| 340 | extern const char *pfd_addforward(char *desthost, int destport, char *srcaddr, |
| 341 | int port, void *backhandle, Conf *conf, |
| 342 | void **sockdata, int address_family); |
| 343 | extern void pfd_close(Socket s); |
| 344 | extern void pfd_terminate(void *sockdata); |
| 345 | extern int pfd_send(Socket s, char *data, int len); |
| 346 | extern void pfd_send_eof(Socket s); |
| 347 | extern void pfd_confirm(Socket s); |
| 348 | extern void pfd_unthrottle(Socket s); |
| 349 | extern void pfd_override_throttle(Socket s, int enable); |
| 350 | |
| 351 | /* Exports from x11fwd.c */ |
| 352 | enum { |
| 353 | X11_TRANS_IPV4 = 0, X11_TRANS_IPV6 = 6, X11_TRANS_UNIX = 256 |
| 354 | }; |
| 355 | struct X11Display { |
| 356 | /* Broken-down components of the display name itself */ |
| 357 | int unixdomain; |
| 358 | char *hostname; |
| 359 | int displaynum; |
| 360 | int screennum; |
| 361 | /* OSX sometimes replaces all the above with a full Unix-socket pathname */ |
| 362 | char *unixsocketpath; |
| 363 | |
| 364 | /* PuTTY networking SockAddr to connect to the display, and associated |
| 365 | * gubbins */ |
| 366 | SockAddr addr; |
| 367 | int port; |
| 368 | char *realhost; |
| 369 | |
| 370 | /* Auth details we invented for the virtual display on the SSH server. */ |
| 371 | int remoteauthproto; |
| 372 | unsigned char *remoteauthdata; |
| 373 | int remoteauthdatalen; |
| 374 | char *remoteauthprotoname; |
| 375 | char *remoteauthdatastring; |
| 376 | |
| 377 | /* Our local auth details for talking to the real X display. */ |
| 378 | int localauthproto; |
| 379 | unsigned char *localauthdata; |
| 380 | int localauthdatalen; |
| 381 | |
| 382 | /* |
| 383 | * Used inside x11fwd.c to remember recently seen |
| 384 | * XDM-AUTHORIZATION-1 strings, to avoid replay attacks. |
| 385 | */ |
| 386 | tree234 *xdmseen; |
| 387 | }; |
| 388 | /* |
| 389 | * x11_setup_display() parses the display variable and fills in an |
| 390 | * X11Display structure. Some remote auth details are invented; |
| 391 | * the supplied authtype parameter configures the preferred |
| 392 | * authorisation protocol to use at the remote end. The local auth |
| 393 | * details are looked up by calling platform_get_x11_auth. |
| 394 | */ |
| 395 | extern struct X11Display *x11_setup_display(char *display, int authtype, |
| 396 | Conf *); |
| 397 | void x11_free_display(struct X11Display *disp); |
| 398 | extern const char *x11_init(Socket *, struct X11Display *, void *, |
| 399 | const char *, int, Conf *); |
| 400 | extern void x11_close(Socket); |
| 401 | extern int x11_send(Socket, char *, int); |
| 402 | extern void x11_send_eof(Socket s); |
| 403 | extern void x11_unthrottle(Socket s); |
| 404 | extern void x11_override_throttle(Socket s, int enable); |
| 405 | char *x11_display(const char *display); |
| 406 | /* Platform-dependent X11 functions */ |
| 407 | extern void platform_get_x11_auth(struct X11Display *display, Conf *); |
| 408 | /* examine a mostly-filled-in X11Display and fill in localauth* */ |
| 409 | extern const int platform_uses_x11_unix_by_default; |
| 410 | /* choose default X transport in the absence of a specified one */ |
| 411 | SockAddr platform_get_x11_unix_address(const char *path, int displaynum); |
| 412 | /* make up a SockAddr naming the address for displaynum */ |
| 413 | char *platform_get_x_display(void); |
| 414 | /* allocated local X display string, if any */ |
| 415 | /* Callbacks in x11.c usable _by_ platform X11 functions */ |
| 416 | /* |
| 417 | * This function does the job of platform_get_x11_auth, provided |
| 418 | * it is told where to find a normally formatted .Xauthority file: |
| 419 | * it opens that file, parses it to find an auth record which |
| 420 | * matches the display details in "display", and fills in the |
| 421 | * localauth fields. |
| 422 | * |
| 423 | * It is expected that most implementations of |
| 424 | * platform_get_x11_auth() will work by finding their system's |
| 425 | * .Xauthority file, adjusting the display details if necessary |
| 426 | * for local oddities like Unix-domain socket transport, and |
| 427 | * calling this function to do the rest of the work. |
| 428 | */ |
| 429 | void x11_get_auth_from_authfile(struct X11Display *display, |
| 430 | const char *authfilename); |
| 431 | |
| 432 | Bignum copybn(Bignum b); |
| 433 | Bignum bn_power_2(int n); |
| 434 | void bn_restore_invariant(Bignum b); |
| 435 | Bignum bignum_from_long(unsigned long n); |
| 436 | void freebn(Bignum b); |
| 437 | Bignum modpow(Bignum base, Bignum exp, Bignum mod); |
| 438 | Bignum modmul(Bignum a, Bignum b, Bignum mod); |
| 439 | void decbn(Bignum n); |
| 440 | extern Bignum Zero, One; |
| 441 | Bignum bignum_from_bytes(const unsigned char *data, int nbytes); |
| 442 | int ssh1_read_bignum(const unsigned char *data, int len, Bignum * result); |
| 443 | int bignum_bitcount(Bignum bn); |
| 444 | int ssh1_bignum_length(Bignum bn); |
| 445 | int ssh2_bignum_length(Bignum bn); |
| 446 | int bignum_byte(Bignum bn, int i); |
| 447 | int bignum_bit(Bignum bn, int i); |
| 448 | void bignum_set_bit(Bignum bn, int i, int value); |
| 449 | int ssh1_write_bignum(void *data, Bignum bn); |
| 450 | Bignum biggcd(Bignum a, Bignum b); |
| 451 | unsigned short bignum_mod_short(Bignum number, unsigned short modulus); |
| 452 | Bignum bignum_add_long(Bignum number, unsigned long addend); |
| 453 | Bignum bigadd(Bignum a, Bignum b); |
| 454 | Bignum bigsub(Bignum a, Bignum b); |
| 455 | Bignum bigmul(Bignum a, Bignum b); |
| 456 | Bignum bigmuladd(Bignum a, Bignum b, Bignum addend); |
| 457 | Bignum bigdiv(Bignum a, Bignum b); |
| 458 | Bignum bigmod(Bignum a, Bignum b); |
| 459 | Bignum modinv(Bignum number, Bignum modulus); |
| 460 | Bignum bignum_bitmask(Bignum number); |
| 461 | Bignum bignum_rshift(Bignum number, int shift); |
| 462 | int bignum_cmp(Bignum a, Bignum b); |
| 463 | char *bignum_decimal(Bignum x); |
| 464 | |
| 465 | #ifdef DEBUG |
| 466 | void diagbn(char *prefix, Bignum md); |
| 467 | #endif |
| 468 | |
| 469 | void *dh_setup_group(const struct ssh_kex *kex); |
| 470 | void *dh_setup_gex(Bignum pval, Bignum gval); |
| 471 | void dh_cleanup(void *); |
| 472 | Bignum dh_create_e(void *, int nbits); |
| 473 | Bignum dh_find_K(void *, Bignum f); |
| 474 | |
| 475 | int loadrsakey(const Filename *filename, struct RSAKey *key, |
| 476 | char *passphrase, const char **errorstr); |
| 477 | int rsakey_encrypted(const Filename *filename, char **comment); |
| 478 | int rsakey_pubblob(const Filename *filename, void **blob, int *bloblen, |
| 479 | char **commentptr, const char **errorstr); |
| 480 | |
| 481 | int saversakey(const Filename *filename, struct RSAKey *key, char *passphrase); |
| 482 | |
| 483 | extern int base64_decode_atom(char *atom, unsigned char *out); |
| 484 | extern int base64_lines(int datalen); |
| 485 | extern void base64_encode_atom(unsigned char *data, int n, char *out); |
| 486 | extern void base64_encode(FILE *fp, unsigned char *data, int datalen, int cpl); |
| 487 | |
| 488 | /* ssh2_load_userkey can return this as an error */ |
| 489 | extern struct ssh2_userkey ssh2_wrong_passphrase; |
| 490 | #define SSH2_WRONG_PASSPHRASE (&ssh2_wrong_passphrase) |
| 491 | |
| 492 | int ssh2_userkey_encrypted(const Filename *filename, char **comment); |
| 493 | struct ssh2_userkey *ssh2_load_userkey(const Filename *filename, |
| 494 | char *passphrase, const char **errorstr); |
| 495 | unsigned char *ssh2_userkey_loadpub(const Filename *filename, char **algorithm, |
| 496 | int *pub_blob_len, char **commentptr, |
| 497 | const char **errorstr); |
| 498 | int ssh2_save_userkey(const Filename *filename, struct ssh2_userkey *key, |
| 499 | char *passphrase); |
| 500 | const struct ssh_signkey *find_pubkey_alg(const char *name); |
| 501 | |
| 502 | enum { |
| 503 | SSH_KEYTYPE_UNOPENABLE, |
| 504 | SSH_KEYTYPE_UNKNOWN, |
| 505 | SSH_KEYTYPE_SSH1, SSH_KEYTYPE_SSH2, |
| 506 | SSH_KEYTYPE_OPENSSH, SSH_KEYTYPE_SSHCOM |
| 507 | }; |
| 508 | int key_type(const Filename *filename); |
| 509 | char *key_type_to_str(int type); |
| 510 | |
| 511 | int import_possible(int type); |
| 512 | int import_target_type(int type); |
| 513 | int import_encrypted(const Filename *filename, int type, char **comment); |
| 514 | int import_ssh1(const Filename *filename, int type, |
| 515 | struct RSAKey *key, char *passphrase, const char **errmsg_p); |
| 516 | struct ssh2_userkey *import_ssh2(const Filename *filename, int type, |
| 517 | char *passphrase, const char **errmsg_p); |
| 518 | int export_ssh1(const Filename *filename, int type, |
| 519 | struct RSAKey *key, char *passphrase); |
| 520 | int export_ssh2(const Filename *filename, int type, |
| 521 | struct ssh2_userkey *key, char *passphrase); |
| 522 | |
| 523 | void des3_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len); |
| 524 | void des3_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len); |
| 525 | void des3_decrypt_pubkey_ossh(unsigned char *key, unsigned char *iv, |
| 526 | unsigned char *blk, int len); |
| 527 | void des3_encrypt_pubkey_ossh(unsigned char *key, unsigned char *iv, |
| 528 | unsigned char *blk, int len); |
| 529 | void aes256_encrypt_pubkey(unsigned char *key, unsigned char *blk, |
| 530 | int len); |
| 531 | void aes256_decrypt_pubkey(unsigned char *key, unsigned char *blk, |
| 532 | int len); |
| 533 | |
| 534 | void des_encrypt_xdmauth(unsigned char *key, unsigned char *blk, int len); |
| 535 | void des_decrypt_xdmauth(unsigned char *key, unsigned char *blk, int len); |
| 536 | |
| 537 | /* |
| 538 | * For progress updates in the key generation utility. |
| 539 | */ |
| 540 | #define PROGFN_INITIALISE 1 |
| 541 | #define PROGFN_LIN_PHASE 2 |
| 542 | #define PROGFN_EXP_PHASE 3 |
| 543 | #define PROGFN_PHASE_EXTENT 4 |
| 544 | #define PROGFN_READY 5 |
| 545 | #define PROGFN_PROGRESS 6 |
| 546 | typedef void (*progfn_t) (void *param, int action, int phase, int progress); |
| 547 | |
| 548 | int rsa_generate(struct RSAKey *key, int bits, progfn_t pfn, |
| 549 | void *pfnparam); |
| 550 | int dsa_generate(struct dss_key *key, int bits, progfn_t pfn, |
| 551 | void *pfnparam); |
| 552 | Bignum primegen(int bits, int modulus, int residue, Bignum factor, |
| 553 | int phase, progfn_t pfn, void *pfnparam, unsigned firstbits); |
| 554 | void invent_firstbits(unsigned *one, unsigned *two); |
| 555 | |
| 556 | |
| 557 | /* |
| 558 | * zlib compression. |
| 559 | */ |
| 560 | void *zlib_compress_init(void); |
| 561 | void zlib_compress_cleanup(void *); |
| 562 | void *zlib_decompress_init(void); |
| 563 | void zlib_decompress_cleanup(void *); |
| 564 | int zlib_compress_block(void *, unsigned char *block, int len, |
| 565 | unsigned char **outblock, int *outlen); |
| 566 | int zlib_decompress_block(void *, unsigned char *block, int len, |
| 567 | unsigned char **outblock, int *outlen); |
| 568 | |
| 569 | /* |
| 570 | * SSH-1 agent messages. |
| 571 | */ |
| 572 | #define SSH1_AGENTC_REQUEST_RSA_IDENTITIES 1 |
| 573 | #define SSH1_AGENT_RSA_IDENTITIES_ANSWER 2 |
| 574 | #define SSH1_AGENTC_RSA_CHALLENGE 3 |
| 575 | #define SSH1_AGENT_RSA_RESPONSE 4 |
| 576 | #define SSH1_AGENTC_ADD_RSA_IDENTITY 7 |
| 577 | #define SSH1_AGENTC_REMOVE_RSA_IDENTITY 8 |
| 578 | #define SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 /* openssh private? */ |
| 579 | |
| 580 | /* |
| 581 | * Messages common to SSH-1 and OpenSSH's SSH-2. |
| 582 | */ |
| 583 | #define SSH_AGENT_FAILURE 5 |
| 584 | #define SSH_AGENT_SUCCESS 6 |
| 585 | |
| 586 | /* |
| 587 | * OpenSSH's SSH-2 agent messages. |
| 588 | */ |
| 589 | #define SSH2_AGENTC_REQUEST_IDENTITIES 11 |
| 590 | #define SSH2_AGENT_IDENTITIES_ANSWER 12 |
| 591 | #define SSH2_AGENTC_SIGN_REQUEST 13 |
| 592 | #define SSH2_AGENT_SIGN_RESPONSE 14 |
| 593 | #define SSH2_AGENTC_ADD_IDENTITY 17 |
| 594 | #define SSH2_AGENTC_REMOVE_IDENTITY 18 |
| 595 | #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19 |
| 596 | |
| 597 | /* |
| 598 | * Need this to warn about support for the original SSH-2 keyfile |
| 599 | * format. |
| 600 | */ |
| 601 | void old_keyfile_warning(void); |