[u/mdw/putty] / ssh.h

#include <string.h>

#include "puttymem.h"
#include "network.h"

extern void sshfwd_close(struct ssh_channel *c);
extern int sshfwd_write(struct ssh_channel *c, char *, int);
extern void sshfwd_unthrottle(struct ssh_channel *c, int bufsize);

/*
 * Useful thing.
 */
#ifndef lenof
#define lenof(x) ( (sizeof((x))) / (sizeof(*(x))))
#endif

#define SSH_CIPHER_IDEA		1
#define SSH_CIPHER_DES		2
#define SSH_CIPHER_3DES		3
#define SSH_CIPHER_BLOWFISH	6

#ifdef MSCRYPTOAPI
#define APIEXTRA 8
#else
#define APIEXTRA 0
#endif

#ifndef BIGNUM_INTERNAL
typedef void *Bignum;
#endif

struct RSAKey {
    int bits;
    int bytes;
#ifdef MSCRYPTOAPI
    unsigned long exponent;
    unsigned char *modulus;
#else
    Bignum modulus;
    Bignum exponent;
    Bignum private_exponent;
    Bignum p;
    Bignum q;
    Bignum iqmp;
#endif
    char *comment;
};

int makekey(unsigned char *data, struct RSAKey *result,
	    unsigned char **keystr, int order);
int makeprivate(unsigned char *data, struct RSAKey *result);
void rsaencrypt(unsigned char *data, int length, struct RSAKey *key);
Bignum rsadecrypt(Bignum input, struct RSAKey *key);
void rsasign(unsigned char *data, int length, struct RSAKey *key);
void rsasanitise(struct RSAKey *key);
int rsastr_len(struct RSAKey *key);
void rsastr_fmt(char *str, struct RSAKey *key);
void rsa_fingerprint(char *str, int len, struct RSAKey *key);
int rsa_verify(struct RSAKey *key);
void freersakey(struct RSAKey *key);

typedef unsigned int word32;
typedef unsigned int uint32;

unsigned long crc32(const void *s, size_t len);

typedef struct {
    uint32 h[4];
} MD5_Core_State;

struct MD5Context {
#ifdef MSCRYPTOAPI
    unsigned long hHash;
#else
    MD5_Core_State core;
    unsigned char block[64];
    int blkused;
    uint32 lenhi, lenlo;
#endif
};

void MD5Init(struct MD5Context *context);
void MD5Update(struct MD5Context *context, unsigned char const *buf,
	       unsigned len);
void MD5Final(unsigned char digest[16], struct MD5Context *context);

typedef struct {
    uint32 h[5];
    unsigned char block[64];
    int blkused;
    uint32 lenhi, lenlo;
} SHA_State;

void SHA_Init(SHA_State * s);
void SHA_Bytes(SHA_State * s, void *p, int len);
void SHA_Final(SHA_State * s, unsigned char *output);
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 */
    void (*setsckey) (unsigned char *key);	/* for ssh 2 */
    void (*encrypt) (unsigned char *blk, int len);
    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 {
    void (*setcskey) (unsigned char *key);
    void (*setsckey) (unsigned char *key);
    void (*generate) (unsigned char *blk, int len, unsigned long seq);
    int (*verify) (unsigned char *blk, int len, unsigned long seq);
    char *name;
    int len;
};

struct ssh_kex {
    /*
     * Plugging in another KEX algorithm requires structural chaos,
     * so it's hard to abstract them into nice little structures
     * like this. Hence, for the moment, this is just a
     * placeholder. I claim justification in the fact that OpenSSH
     * does this too :-)
     */
    char *name;
};

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);
    int (*openssh_fmtkey) (void *key, 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;

/*
 * PuTTY version number formatted as an SSH version string. 
 */
extern char sshver[];

#ifndef MSCRYPTOAPI
void SHATransform(word32 * digest, word32 * data);
#endif

int random_byte(void);
void random_add_noise(void *noise, int length);
void random_add_heavynoise(void *noise, int length);

void logevent(char *);
void *new_sock_channel(Socket s); // allocates and register a new channel for port forwarding
void ssh_send_port_open(void *channel, char *hostname, int port, char *org);

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 bignum_bitcount(Bignum bn);
int ssh1_bignum_length(Bignum bn);
int ssh2_bignum_length(Bignum bn);
int bignum_byte(Bignum bn, int i);
int bignum_bit(Bignum bn, int i);
void bignum_set_bit(Bignum bn, int i, int value);
int ssh1_write_bignum(void *data, Bignum bn);
Bignum biggcd(Bignum a, Bignum b);
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(int nbits);
Bignum dh_find_K(Bignum f);

int loadrsakey(char *filename, struct RSAKey *key, char *passphrase);
int rsakey_encrypted(char *filename, char **comment);

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);

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, 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
Commit	Line	Data
37508af4	1	#include <string.h>
37508af4	2
dcbde236	3	#include "puttymem.h"
d74d141c	4	#include "network.h"
dcbde236	5
5471d09a	6	extern void sshfwd_close(struct ssh_channel *c);
	7	extern int sshfwd_write(struct ssh_channel c, char , int);
	8	extern void sshfwd_unthrottle(struct ssh_channel *c, int bufsize);
	9
e5574168	10	/*
	11	* Useful thing.
	12	*/
	13	#ifndef lenof
	14	#define lenof(x) ( (sizeof((x))) / (sizeof(*(x))))
	15	#endif
	16
bea1ef5f	17	#define SSH_CIPHER_IDEA 1
9697bfd2	18	#define SSH_CIPHER_DES 2
bea1ef5f	19	#define SSH_CIPHER_3DES 3
	20	#define SSH_CIPHER_BLOWFISH 6
	21
e5574168	22	#ifdef MSCRYPTOAPI
	23	#define APIEXTRA 8
	24	#else
	25	#define APIEXTRA 0
	26	#endif
	27
3709bfe9	28	#ifndef BIGNUM_INTERNAL
	29	typedef void *Bignum;
	30	#endif
7cca0d81	31
374330e2	32	struct RSAKey {
	33	int bits;
	34	int bytes;
8f203108	35	#ifdef MSCRYPTOAPI
	36	unsigned long exponent;
	37	unsigned char *modulus;
	38	#else
7cca0d81	39	Bignum modulus;
	40	Bignum exponent;
	41	Bignum private_exponent;
9400cf6f	42	Bignum p;
	43	Bignum q;
	44	Bignum iqmp;
65a22376	45	#endif
65a22376	46	char *comment;
9400cf6f	47	};
9400cf6f	48
374330e2	49	int makekey(unsigned char data, struct RSAKey result,
7cca0d81	50	unsigned char **keystr, int order);
7cca0d81	51	int makeprivate(unsigned char data, struct RSAKey result);
374330e2	52	void rsaencrypt(unsigned char data, int length, struct RSAKey key);
7cca0d81	53	Bignum rsadecrypt(Bignum input, struct RSAKey *key);
	54	void rsasign(unsigned char data, int length, struct RSAKey key);
	55	void rsasanitise(struct RSAKey *key);
374330e2	56	int rsastr_len(struct RSAKey *key);
374330e2	57	void rsastr_fmt(char str, struct RSAKey key);
1c2a93c4	58	void rsa_fingerprint(char str, int len, struct RSAKey key);
014970c8	59	int rsa_verify(struct RSAKey *key);
5c58ad2d	60	void freersakey(struct RSAKey *key);
374330e2	61
	62	typedef unsigned int word32;
	63	typedef unsigned int uint32;
	64
8160fbfc	65	unsigned long crc32(const void *s, size_t len);
374330e2	66
48672163	67	typedef struct {
	68	uint32 h[4];
	69	} MD5_Core_State;
	70
374330e2	71	struct MD5Context {
8f203108	72	#ifdef MSCRYPTOAPI
	73	unsigned long hHash;
	74	#else
48672163	75	MD5_Core_State core;
bb093ca7	76	unsigned char block[64];
48672163	77	int blkused;
48672163	78	uint32 lenhi, lenlo;
8f203108	79	#endif
374330e2	80	};
	81
	82	void MD5Init(struct MD5Context *context);
	83	void MD5Update(struct MD5Context context, unsigned char const buf,
32874aea	84	unsigned len);
374330e2	85	void MD5Final(unsigned char digest[16], struct MD5Context *context);
374330e2	86
e5574168	87	typedef struct {
	88	uint32 h[5];
	89	unsigned char block[64];
	90	int blkused;
	91	uint32 lenhi, lenlo;
	92	} SHA_State;
	93
32874aea	94	void SHA_Init(SHA_State * s);
	95	void SHA_Bytes(SHA_State * s, void *p, int len);
	96	void SHA_Final(SHA_State * s, unsigned char *output);
7cca0d81	97	void SHA_Simple(void p, int len, unsigned char output);
e5574168	98
374330e2	99	struct ssh_cipher {
32874aea	100	void (sesskey) (unsigned char key); /* for ssh 1 */
	101	void (encrypt) (unsigned char blk, int len);
	102	void (decrypt) (unsigned char blk, int len);
0a3f1d48	103	int blksize;
	104	};
	105
	106	struct ssh2_cipher {
32874aea	107	void (setcsiv) (unsigned char key); /* for ssh 2 */
	108	void (setcskey) (unsigned char key); /* for ssh 2 */
	109	void (setsciv) (unsigned char key); /* for ssh 2 */
	110	void (setsckey) (unsigned char key); /* for ssh 2 */
	111	void (encrypt) (unsigned char blk, int len);
	112	void (decrypt) (unsigned char blk, int len);
e5574168	113	char *name;
e5574168	114	int blksize;
d2a0e0be	115	int keylen;
e5574168	116	};
e5574168	117
0a3f1d48	118	struct ssh2_ciphers {
0a3f1d48	119	int nciphers;
65a22376	120	const struct ssh2_cipher const list;
0a3f1d48	121	};
0a3f1d48	122
e5574168	123	struct ssh_mac {
32874aea	124	void (setcskey) (unsigned char key);
	125	void (setsckey) (unsigned char key);
	126	void (generate) (unsigned char blk, int len, unsigned long seq);
	127	int (verify) (unsigned char blk, int len, unsigned long seq);
e5574168	128	char *name;
	129	int len;
	130	};
	131
	132	struct ssh_kex {
7cca0d81	133	/*
	134	* Plugging in another KEX algorithm requires structural chaos,
	135	* so it's hard to abstract them into nice little structures
	136	* like this. Hence, for the moment, this is just a
	137	* placeholder. I claim justification in the fact that OpenSSH
	138	* does this too :-)
	139	*/
e5574168	140	char *name;
	141	};
	142
e055a386	143	struct ssh_signkey {
32874aea	144	void (newkey) (char *data, int len);
	145	void (freekey) (void key);
	146	char (fmtkey) (void *key);
	147	unsigned char (public_blob) (void key, int len);
	148	unsigned char (private_blob) (void key, int len);
	149	void (createkey) (unsigned char *pub_blob, int pub_len,
	150	unsigned char *priv_blob, int priv_len);
	151	void (openssh_createkey) (unsigned char *blob, int len);
	152	int (openssh_fmtkey) (void key, unsigned char *blob, int len);
	153	char (fingerprint) (void *key);
	154	int (verifysig) (void key, char *sig, int siglen,
	155	char *data, int datalen);
	156	unsigned char (sign) (void key, char data, int datalen,
	157	int *siglen);
e5574168	158	char *name;
32874aea	159	char keytype; / for host key cache */
e5574168	160	};
	161
	162	struct ssh_compress {
	163	char *name;
32874aea	164	void (*compress_init) (void);
	165	int (compress) (unsigned char block, int len,
	166	unsigned char *outblock, int outlen);
	167	void (*decompress_init) (void);
	168	int (decompress) (unsigned char block, int len,
	169	unsigned char *outblock, int outlen);
	170	int (*disable_compression) (void);
374330e2	171	};
374330e2	172
65a22376	173	struct ssh2_userkey {
	174	const struct ssh_signkey alg; / the key algorithm */
	175	void data; / the key data */
	176	char comment; / the key comment */
	177	};
	178
	179	extern const struct ssh_cipher ssh_3des;
	180	extern const struct ssh_cipher ssh_des;
	181	extern const struct ssh_cipher ssh_blowfish_ssh1;
	182	extern const struct ssh2_ciphers ssh2_3des;
	183	extern const struct ssh2_ciphers ssh2_aes;
	184	extern const struct ssh2_ciphers ssh2_blowfish;
	185	extern const struct ssh_kex ssh_diffiehellman;
	186	extern const struct ssh_kex ssh_diffiehellman_gex;
	187	extern const struct ssh_signkey ssh_dss;
	188	extern const struct ssh_signkey ssh_rsa;
	189	extern const struct ssh_mac ssh_md5;
	190	extern const struct ssh_mac ssh_sha1;
	191	extern const struct ssh_mac ssh_sha1_buggy;
	192
900a4ee6	193	/*
	194	* PuTTY version number formatted as an SSH version string.
	195	*/
	196	extern char sshver[];
	197
8f203108	198	#ifndef MSCRYPTOAPI
32874aea	199	void SHATransform(word32 * digest, word32 * data);
8f203108	200	#endif
374330e2	201
	202	int random_byte(void);
	203	void random_add_noise(void *noise, int length);
6e522441	204	void random_add_heavynoise(void *noise, int length);
c5e9c988	205
32874aea	206	void logevent(char *);
d74d141c	207	void *new_sock_channel(Socket s); // allocates and register a new channel for port forwarding
d74d141c	208	void ssh_send_port_open(void channel, char hostname, int port, char *org);
e5574168	209
7cca0d81	210	Bignum copybn(Bignum b);
3709bfe9	211	Bignum bn_power_2(int n);
3709bfe9	212	void bn_restore_invariant(Bignum b);
9400cf6f	213	Bignum bignum_from_short(unsigned short n);
e5574168	214	void freebn(Bignum b);
59600f67	215	Bignum modpow(Bignum base, Bignum exp, Bignum mod);
59600f67	216	Bignum modmul(Bignum a, Bignum b, Bignum mod);
7cca0d81	217	void decbn(Bignum n);
7cca0d81	218	extern Bignum Zero, One;
3709bfe9	219	Bignum bignum_from_bytes(unsigned char *data, int nbytes);
32874aea	220	int ssh1_read_bignum(unsigned char data, Bignum result);
ddecd643	221	int bignum_bitcount(Bignum bn);
5c58ad2d	222	int ssh1_bignum_length(Bignum bn);
260f3dec	223	int ssh2_bignum_length(Bignum bn);
5c58ad2d	224	int bignum_byte(Bignum bn, int i);
9400cf6f	225	int bignum_bit(Bignum bn, int i);
9400cf6f	226	void bignum_set_bit(Bignum bn, int i, int value);
5c58ad2d	227	int ssh1_write_bignum(void *data, Bignum bn);
9400cf6f	228	Bignum biggcd(Bignum a, Bignum b);
	229	unsigned short bignum_mod_short(Bignum number, unsigned short modulus);
	230	Bignum bignum_add_long(Bignum number, unsigned long addend);
	231	Bignum bigmul(Bignum a, Bignum b);
	232	Bignum modinv(Bignum number, Bignum modulus);
3709bfe9	233	Bignum bignum_bitmask(Bignum number);
9400cf6f	234	Bignum bignum_rshift(Bignum number, int shift);
8c3cd914	235	int bignum_cmp(Bignum a, Bignum b);
6e522441	236	char *bignum_decimal(Bignum x);
e5574168	237
3709bfe9	238	void dh_setup_group1(void);
a92dd380	239	void dh_setup_group(Bignum pval, Bignum gval);
3709bfe9	240	void dh_cleanup(void);
7bd5a860	241	Bignum dh_create_e(int nbits);
e5574168	242	Bignum dh_find_K(Bignum f);
7cca0d81	243
65a22376	244	int loadrsakey(char filename, struct RSAKey key, char *passphrase);
a52f067e	245	int rsakey_encrypted(char filename, char *comment);
7cca0d81	246
65a22376	247	int saversakey(char filename, struct RSAKey key, char *passphrase);
	248
	249	void base64_encode_atom(unsigned char data, int n, char out);
	250
	251	/* ssh2_load_userkey can return this as an error */
	252	extern struct ssh2_userkey ssh2_wrong_passphrase;
	253	#define SSH2_WRONG_PASSPHRASE (&ssh2_wrong_passphrase)
	254
	255	int ssh2_userkey_encrypted(char filename, char *comment);
	256	struct ssh2_userkey ssh2_load_userkey(char filename, char *passphrase);
32874aea	257	char ssh2_userkey_loadpub(char filename, char **algorithm,
	258	int *pub_blob_len);
	259	int ssh2_save_userkey(char filename, struct ssh2_userkey key,
	260	char *passphrase);
65a22376	261
65a22376	262	int keyfile_version(char *filename);
6e522441	263
65a22376	264	void des3_decrypt_pubkey(unsigned char key, unsigned char blk, int len);
65a22376	265	void des3_encrypt_pubkey(unsigned char key, unsigned char blk, int len);
32874aea	266	void aes256_encrypt_pubkey(unsigned char key, unsigned char blk,
	267	int len);
	268	void aes256_decrypt_pubkey(unsigned char key, unsigned char blk,
	269	int len);
9400cf6f	270
	271	/*
	272	* For progress updates in the key generation utility.
	273	*/
32874aea	274	typedef void (progfn_t) (void param, int phase, int progress);
9400cf6f	275
32874aea	276	int rsa_generate(struct RSAKey *key, int bits, progfn_t pfn,
	277	void *pfnparam);
	278	Bignum primegen(int bits, int modulus, int residue, int phase,
	279	progfn_t pfn, void *pfnparam);
4ba9b64b	280
d74d141c	281
4ba9b64b	282	/*
	283	* zlib compression.
	284	*/
	285	void zlib_compress_init(void);
	286	void zlib_decompress_init(void);
	287	int zlib_compress_block(unsigned char *block, int len,
	288	unsigned char *outblock, int outlen);
	289	int zlib_decompress_block(unsigned char *block, int len,
	290	unsigned char *outblock, int outlen);
1983e559	291
	292	/*
	293	* SSH1 agent messages.
	294	*/
	295	#define SSH1_AGENTC_REQUEST_RSA_IDENTITIES 1
	296	#define SSH1_AGENT_RSA_IDENTITIES_ANSWER 2
	297	#define SSH1_AGENTC_RSA_CHALLENGE 3
	298	#define SSH1_AGENT_RSA_RESPONSE 4
	299	#define SSH1_AGENTC_ADD_RSA_IDENTITY 7
	300	#define SSH1_AGENTC_REMOVE_RSA_IDENTITY 8
32874aea	301	#define SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 /* openssh private? */
1983e559	302
	303	/*
	304	* Messages common to SSH1 and OpenSSH's SSH2.
	305	*/
	306	#define SSH_AGENT_FAILURE 5
	307	#define SSH_AGENT_SUCCESS 6
	308
	309	/*
	310	* OpenSSH's SSH2 agent messages.
	311	*/
	312	#define SSH2_AGENTC_REQUEST_IDENTITIES 11
	313	#define SSH2_AGENT_IDENTITIES_ANSWER 12
	314	#define SSH2_AGENTC_SIGN_REQUEST 13
	315	#define SSH2_AGENT_SIGN_RESPONSE 14
	316	#define SSH2_AGENTC_ADD_IDENTITY 17
	317	#define SSH2_AGENTC_REMOVE_IDENTITY 18
	318	#define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19