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Add support for RFC 4432 RSA key exchange, the patch for which has been

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lying around in my home directory for _years_.

[originally from svn r7496]
This commit is contained in:
Ben Harris
2007-04-30 22:09:26 +00:00
parent 9f7f5157fe
commit dad558a1e5
9 changed files with 314 additions and 29 deletions
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23
ssh.h
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@ -82,6 +82,17 @@ void crcda_free_context(void *handle);
int detect_attack(void *handle, unsigned char *buf, uint32 len,
unsigned char *IV);
/*
* SSH2 RSA key exchange functions
*/
struct ssh_hash;
void *ssh_rsakex_newkey(char *data, int len);
void ssh_rsakex_freekey(void *key);
int ssh_rsakex_klen(void *key);
void ssh_rsakex_encrypt(const struct ssh_hash *h, unsigned char *in, int inlen,
unsigned char *out, int outlen,
void *key);
typedef struct {
uint32 h[4];
} MD5_Core_State;
@ -194,15 +205,10 @@ struct ssh_hash {
};
struct ssh_kex {
/*
* Plugging in another KEX algorithm requires structural chaos,
* so it's hard to abstract them into nice little structures
* like this. Fortunately, all our KEXes are basically
* Diffie-Hellman at the moment, so in this structure I simply
* parametrise the DH exchange a bit.
*/
char *name, *groupname;
const unsigned char *pdata, *gdata;/* NULL means use group exchange */
enum { KEXTYPE_DH, KEXTYPE_RSA } main_type;
/* For DH */
const unsigned char *pdata, *gdata; /* NULL means group exchange */
int plen, glen;
const struct ssh_hash *hash;
};
@ -268,6 +274,7 @@ extern const struct ssh_hash ssh_sha256;
extern const struct ssh_kexes ssh_diffiehellman_group1;
extern const struct ssh_kexes ssh_diffiehellman_group14;
extern const struct ssh_kexes ssh_diffiehellman_gex;
extern const struct ssh_kexes ssh_rsa_kex;
extern const struct ssh_signkey ssh_dss;
extern const struct ssh_signkey ssh_rsa;
extern const struct ssh_mac ssh_hmac_md5;