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
;
41 int makekey(unsigned char *data
, struct RSAKey
*result
,
42 unsigned char **keystr
, int order
);
43 int makeprivate(unsigned char *data
, struct RSAKey
*result
);
44 void rsaencrypt(unsigned char *data
, int length
, struct RSAKey
*key
);
45 Bignum
rsadecrypt(Bignum input
, struct RSAKey
*key
);
46 void rsasign(unsigned char *data
, int length
, struct RSAKey
*key
);
47 void rsasanitise(struct RSAKey
*key
);
48 int rsastr_len(struct RSAKey
*key
);
49 void rsastr_fmt(char *str
, struct RSAKey
*key
);
51 typedef unsigned int word32
;
52 typedef unsigned int uint32
;
54 unsigned long crc32(const void *s
, size_t len
);
65 unsigned char block
[64];
71 void MD5Init(struct MD5Context
*context
);
72 void MD5Update(struct MD5Context
*context
, unsigned char const *buf
,
74 void MD5Final(unsigned char digest
[16], struct MD5Context
*context
);
78 unsigned char block
[64];
83 void SHA_Init(SHA_State
*s
);
84 void SHA_Bytes(SHA_State
*s
, void *p
, int len
);
85 void SHA_Final(SHA_State
*s
, unsigned char *output
);
86 void SHA_Simple(void *p
, int len
, unsigned char *output
);
89 void (*sesskey
)(unsigned char *key
); /* for ssh 1 */
90 void (*setcsiv
)(unsigned char *key
); /* for ssh 2 */
91 void (*setcskey
)(unsigned char *key
); /* for ssh 2 */
92 void (*setsciv
)(unsigned char *key
); /* for ssh 2 */
93 void (*setsckey
)(unsigned char *key
); /* for ssh 2 */
94 void (*encrypt
)(unsigned char *blk
, int len
);
95 void (*decrypt
)(unsigned char *blk
, int len
);
101 void (*setcskey
)(unsigned char *key
);
102 void (*setsckey
)(unsigned char *key
);
103 void (*generate
)(unsigned char *blk
, int len
, unsigned long seq
);
104 int (*verify
)(unsigned char *blk
, int len
, unsigned long seq
);
111 * Plugging in another KEX algorithm requires structural chaos,
112 * so it's hard to abstract them into nice little structures
113 * like this. Hence, for the moment, this is just a
114 * placeholder. I claim justification in the fact that OpenSSH
121 void (*setkey
)(char *data
, int len
);
122 char *(*fmtkey
)(void);
123 int (*verifysig
)(char *sig
, int siglen
, char *data
, int datalen
);
127 struct ssh_compress
{
132 void SHATransform(word32
*digest
, word32
*data
);
135 int random_byte(void);
136 void random_add_noise(void *noise
, int length
);
138 void logevent (char *);
140 Bignum
newbn(int length
);
141 Bignum
copybn(Bignum b
);
142 void freebn(Bignum b
);
143 void modpow(Bignum base
, Bignum exp
, Bignum mod
, Bignum result
);
144 void modmul(Bignum a
, Bignum b
, Bignum mod
, Bignum result
);
145 void decbn(Bignum n
);
146 extern Bignum Zero
, One
;
147 int ssh1_read_bignum(unsigned char *data
, Bignum
*result
);
149 Bignum
dh_create_e(void);
150 Bignum
dh_find_K(Bignum f
);
152 int loadrsakey(char *filename
, struct RSAKey
*key
, char *passphrase
);
153 int rsakey_encrypted(char *filename
);
155 void des3_decrypt_pubkey(unsigned char *key
,
156 unsigned char *blk
, int len
);