X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/blobdiff_plain/59600f67b6dd739bb31a2cb23e887adef13c3ac8..6e9e952088e8aa586060aa2464a19186f3d58341:/ssh.h diff --git a/ssh.h b/ssh.h index 331ff3b2..4a674936 100644 --- a/ssh.h +++ b/ssh.h @@ -1,5 +1,7 @@ #include +#include "puttymem.h" + /* * Useful thing. */ @@ -18,12 +20,9 @@ #define APIEXTRA 0 #endif -/* - * A Bignum is stored as a sequence of `unsigned short' words. The - * first tells how many remain; the remaining ones are digits, LS - * first. - */ -typedef unsigned short *Bignum; +#ifndef BIGNUM_INTERNAL +typedef void *Bignum; +#endif struct RSAKey { int bits; @@ -35,14 +34,11 @@ struct RSAKey { Bignum modulus; Bignum exponent; Bignum private_exponent; -#endif - char *comment; -}; - -struct RSAAux { Bignum p; Bignum q; Bignum iqmp; +#endif + char *comment; }; int makekey(unsigned char *data, struct RSAKey *result, @@ -96,6 +92,12 @@ void SHA_Simple(void *p, int len, unsigned char *output); struct ssh_cipher { void (*sesskey)(unsigned char *key); /* for ssh 1 */ + void (*encrypt)(unsigned char *blk, int len); + void (*decrypt)(unsigned char *blk, int len); + int blksize; +}; + +struct ssh2_cipher { void (*setcsiv)(unsigned char *key); /* for ssh 2 */ void (*setcskey)(unsigned char *key); /* for ssh 2 */ void (*setsciv)(unsigned char *key); /* for ssh 2 */ @@ -104,6 +106,12 @@ struct ssh_cipher { void (*decrypt)(unsigned char *blk, int len); char *name; int blksize; + int keylen; +}; + +struct ssh2_ciphers { + int nciphers; + const struct ssh2_cipher *const *list; }; struct ssh_mac { @@ -126,19 +134,54 @@ struct ssh_kex { char *name; }; -struct ssh_hostkey { - void (*setkey)(char *data, int len); - char *(*fmtkey)(void); - char *(*fingerprint)(void); - int (*verifysig)(char *sig, int siglen, char *data, int datalen); +struct ssh_signkey { + void *(*newkey)(char *data, int len); + void (*freekey)(void *key); + char *(*fmtkey)(void *key); + unsigned char *(*public_blob)(void *key, int *len); + unsigned char *(*private_blob)(void *key, int *len); + void *(*createkey)(unsigned char *pub_blob, int pub_len, + unsigned char *priv_blob, int priv_len); + void *(*openssh_createkey)(unsigned char **blob, int *len); + char *(*fingerprint)(void *key); + int (*verifysig)(void *key, char *sig, int siglen, + char *data, int datalen); + unsigned char *(*sign)(void *key, char *data, int datalen, int *siglen); char *name; char *keytype; /* for host key cache */ }; struct ssh_compress { char *name; + void (*compress_init)(void); + int (*compress)(unsigned char *block, int len, + unsigned char **outblock, int *outlen); + void (*decompress_init)(void); + int (*decompress)(unsigned char *block, int len, + unsigned char **outblock, int *outlen); + int (*disable_compression)(void); +}; + +struct ssh2_userkey { + const struct ssh_signkey *alg; /* the key algorithm */ + void *data; /* the key data */ + char *comment; /* the key comment */ }; +extern const struct ssh_cipher ssh_3des; +extern const struct ssh_cipher ssh_des; +extern const struct ssh_cipher ssh_blowfish_ssh1; +extern const struct ssh2_ciphers ssh2_3des; +extern const struct ssh2_ciphers ssh2_aes; +extern const struct ssh2_ciphers ssh2_blowfish; +extern const struct ssh_kex ssh_diffiehellman; +extern const struct ssh_kex ssh_diffiehellman_gex; +extern const struct ssh_signkey ssh_dss; +extern const struct ssh_signkey ssh_rsa; +extern const struct ssh_mac ssh_md5; +extern const struct ssh_mac ssh_sha1; +extern const struct ssh_mac ssh_sha1_buggy; + #ifndef MSCRYPTOAPI void SHATransform(word32 *digest, word32 *data); #endif @@ -149,14 +192,16 @@ void random_add_heavynoise(void *noise, int length); void logevent (char *); -Bignum newbn(int length); Bignum copybn(Bignum b); +Bignum bn_power_2(int n); +void bn_restore_invariant(Bignum b); Bignum bignum_from_short(unsigned short n); void freebn(Bignum b); Bignum modpow(Bignum base, Bignum exp, Bignum mod); Bignum modmul(Bignum a, Bignum b, Bignum mod); void decbn(Bignum n); extern Bignum Zero, One; +Bignum bignum_from_bytes(unsigned char *data, int nbytes); int ssh1_read_bignum(unsigned char *data, Bignum *result); int ssh1_bignum_bitcount(Bignum bn); int ssh1_bignum_length(Bignum bn); @@ -169,31 +214,83 @@ unsigned short bignum_mod_short(Bignum number, unsigned short modulus); Bignum bignum_add_long(Bignum number, unsigned long addend); Bignum bigmul(Bignum a, Bignum b); Bignum modinv(Bignum number, Bignum modulus); +Bignum bignum_bitmask(Bignum number); Bignum bignum_rshift(Bignum number, int shift); int bignum_cmp(Bignum a, Bignum b); char *bignum_decimal(Bignum x); +void dh_setup_group1(void); +void dh_setup_group(Bignum pval, Bignum gval); +void dh_cleanup(void); Bignum dh_create_e(void); Bignum dh_find_K(Bignum f); -int loadrsakey(char *filename, struct RSAKey *key, struct RSAAux *aux, - char *passphrase); +int loadrsakey(char *filename, struct RSAKey *key, char *passphrase); int rsakey_encrypted(char *filename, char **comment); -int saversakey(char *filename, struct RSAKey *key, struct RSAAux *aux, - char *passphrase); +int saversakey(char *filename, struct RSAKey *key, char *passphrase); + +void base64_encode_atom(unsigned char *data, int n, char *out); + +/* ssh2_load_userkey can return this as an error */ +extern struct ssh2_userkey ssh2_wrong_passphrase; +#define SSH2_WRONG_PASSPHRASE (&ssh2_wrong_passphrase) + +int ssh2_userkey_encrypted(char *filename, char **comment); +struct ssh2_userkey *ssh2_load_userkey(char *filename, char *passphrase); +char *ssh2_userkey_loadpub(char *filename, char **algorithm, int *pub_blob_len); +int ssh2_save_userkey(char *filename, struct ssh2_userkey *key, char *passphrase); -void des3_decrypt_pubkey(unsigned char *key, - unsigned char *blk, int len); -void des3_encrypt_pubkey(unsigned char *key, - unsigned char *blk, int len); +int keyfile_version(char *filename); + +void des3_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len); +void des3_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len); +void aes256_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len); +void aes256_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len); /* * For progress updates in the key generation utility. */ typedef void (*progfn_t)(void *param, int phase, int progress); -int rsa_generate(struct RSAKey *key, struct RSAAux *aux, int bits, - progfn_t pfn, void *pfnparam); +int rsa_generate(struct RSAKey *key, int bits, progfn_t pfn, void *pfnparam); Bignum primegen(int bits, int modulus, int residue, int phase, progfn_t pfn, void *pfnparam); + +/* + * zlib compression. + */ +void zlib_compress_init(void); +void zlib_decompress_init(void); +int zlib_compress_block(unsigned char *block, int len, + unsigned char **outblock, int *outlen); +int zlib_decompress_block(unsigned char *block, int len, + unsigned char **outblock, int *outlen); + +/* + * SSH1 agent messages. + */ +#define SSH1_AGENTC_REQUEST_RSA_IDENTITIES 1 +#define SSH1_AGENT_RSA_IDENTITIES_ANSWER 2 +#define SSH1_AGENTC_RSA_CHALLENGE 3 +#define SSH1_AGENT_RSA_RESPONSE 4 +#define SSH1_AGENTC_ADD_RSA_IDENTITY 7 +#define SSH1_AGENTC_REMOVE_RSA_IDENTITY 8 +#define SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 /* openssh private? */ + +/* + * Messages common to SSH1 and OpenSSH's SSH2. + */ +#define SSH_AGENT_FAILURE 5 +#define SSH_AGENT_SUCCESS 6 + +/* + * OpenSSH's SSH2 agent messages. + */ +#define SSH2_AGENTC_REQUEST_IDENTITIES 11 +#define SSH2_AGENT_IDENTITIES_ANSWER 12 +#define SSH2_AGENTC_SIGN_REQUEST 13 +#define SSH2_AGENT_SIGN_RESPONSE 14 +#define SSH2_AGENTC_ADD_IDENTITY 17 +#define SSH2_AGENTC_REMOVE_IDENTITY 18 +#define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19