7 #define lenof(x) ( (sizeof((x))) / (sizeof(*(x))))
10 #define SSH_CIPHER_IDEA 1
11 #define SSH_CIPHER_DES 2
12 #define SSH_CIPHER_3DES 3
13 #define SSH_CIPHER_BLOWFISH 6
22 * A Bignum is stored as a sequence of `unsigned short' words. The
23 * first tells how many remain; the remaining ones are digits, LS
26 typedef unsigned short *Bignum
;
32 unsigned long exponent
;
33 unsigned char *modulus
;
37 Bignum private_exponent
;
42 int makekey(unsigned char *data
, struct RSAKey
*result
,
43 unsigned char **keystr
, int order
);
44 int makeprivate(unsigned char *data
, struct RSAKey
*result
);
45 void rsaencrypt(unsigned char *data
, int length
, struct RSAKey
*key
);
46 Bignum
rsadecrypt(Bignum input
, struct RSAKey
*key
);
47 void rsasign(unsigned char *data
, int length
, struct RSAKey
*key
);
48 void rsasanitise(struct RSAKey
*key
);
49 int rsastr_len(struct RSAKey
*key
);
50 void rsastr_fmt(char *str
, struct RSAKey
*key
);
51 void freersakey(struct RSAKey
*key
);
53 typedef unsigned int word32
;
54 typedef unsigned int uint32
;
56 unsigned long crc32(const void *s
, size_t len
);
67 unsigned char block
[64];
73 void MD5Init(struct MD5Context
*context
);
74 void MD5Update(struct MD5Context
*context
, unsigned char const *buf
,
76 void MD5Final(unsigned char digest
[16], struct MD5Context
*context
);
80 unsigned char block
[64];
85 void SHA_Init(SHA_State
*s
);
86 void SHA_Bytes(SHA_State
*s
, void *p
, int len
);
87 void SHA_Final(SHA_State
*s
, unsigned char *output
);
88 void SHA_Simple(void *p
, int len
, unsigned char *output
);
91 void (*sesskey
)(unsigned char *key
); /* for ssh 1 */
92 void (*setcsiv
)(unsigned char *key
); /* for ssh 2 */
93 void (*setcskey
)(unsigned char *key
); /* for ssh 2 */
94 void (*setsciv
)(unsigned char *key
); /* for ssh 2 */
95 void (*setsckey
)(unsigned char *key
); /* for ssh 2 */
96 void (*encrypt
)(unsigned char *blk
, int len
);
97 void (*decrypt
)(unsigned char *blk
, int len
);
103 void (*setcskey
)(unsigned char *key
);
104 void (*setsckey
)(unsigned char *key
);
105 void (*generate
)(unsigned char *blk
, int len
, unsigned long seq
);
106 int (*verify
)(unsigned char *blk
, int len
, unsigned long seq
);
113 * Plugging in another KEX algorithm requires structural chaos,
114 * so it's hard to abstract them into nice little structures
115 * like this. Hence, for the moment, this is just a
116 * placeholder. I claim justification in the fact that OpenSSH
123 void (*setkey
)(char *data
, int len
);
124 char *(*fmtkey
)(void);
125 int (*verifysig
)(char *sig
, int siglen
, char *data
, int datalen
);
129 struct ssh_compress
{
134 void SHATransform(word32
*digest
, word32
*data
);
137 int random_byte(void);
138 void random_add_noise(void *noise
, int length
);
140 void logevent (char *);
142 Bignum
newbn(int length
);
143 Bignum
copybn(Bignum b
);
144 void freebn(Bignum b
);
145 void modpow(Bignum base
, Bignum exp
, Bignum mod
, Bignum result
);
146 void modmul(Bignum a
, Bignum b
, Bignum mod
, Bignum result
);
147 void decbn(Bignum n
);
148 extern Bignum Zero
, One
;
149 int ssh1_read_bignum(unsigned char *data
, Bignum
*result
);
150 int ssh1_bignum_bitcount(Bignum bn
);
151 int ssh1_bignum_length(Bignum bn
);
152 int bignum_byte(Bignum bn
, int i
);
153 int ssh1_write_bignum(void *data
, Bignum bn
);
155 Bignum
dh_create_e(void);
156 Bignum
dh_find_K(Bignum f
);
158 int loadrsakey(char *filename
, struct RSAKey
*key
, char *passphrase
);
159 int rsakey_encrypted(char *filename
);
161 void des3_decrypt_pubkey(unsigned char *key
,
162 unsigned char *blk
, int len
);