9 #define lenof(x) ( (sizeof((x))) / (sizeof(*(x))))
12 #define SSH_CIPHER_IDEA 1
13 #define SSH_CIPHER_DES 2
14 #define SSH_CIPHER_3DES 3
15 #define SSH_CIPHER_BLOWFISH 6
24 * A Bignum is stored as a sequence of `unsigned short' words. The
25 * first tells how many remain; the remaining ones are digits, LS
28 typedef unsigned short *Bignum
;
34 unsigned long exponent
;
35 unsigned char *modulus
;
39 Bignum private_exponent
;
50 int makekey(unsigned char *data
, struct RSAKey
*result
,
51 unsigned char **keystr
, int order
);
52 int makeprivate(unsigned char *data
, struct RSAKey
*result
);
53 void rsaencrypt(unsigned char *data
, int length
, struct RSAKey
*key
);
54 Bignum
rsadecrypt(Bignum input
, struct RSAKey
*key
);
55 void rsasign(unsigned char *data
, int length
, struct RSAKey
*key
);
56 void rsasanitise(struct RSAKey
*key
);
57 int rsastr_len(struct RSAKey
*key
);
58 void rsastr_fmt(char *str
, struct RSAKey
*key
);
59 void rsa_fingerprint(char *str
, int len
, struct RSAKey
*key
);
60 void freersakey(struct RSAKey
*key
);
62 typedef unsigned int word32
;
63 typedef unsigned int uint32
;
65 unsigned long crc32(const void *s
, size_t len
);
76 unsigned char block
[64];
82 void MD5Init(struct MD5Context
*context
);
83 void MD5Update(struct MD5Context
*context
, unsigned char const *buf
,
85 void MD5Final(unsigned char digest
[16], struct MD5Context
*context
);
89 unsigned char block
[64];
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
);
97 void SHA_Simple(void *p
, int len
, unsigned char *output
);
100 void (*sesskey
)(unsigned char *key
); /* for ssh 1 */
101 void (*setcsiv
)(unsigned char *key
); /* for ssh 2 */
102 void (*setcskey
)(unsigned char *key
); /* for ssh 2 */
103 void (*setsciv
)(unsigned char *key
); /* for ssh 2 */
104 void (*setsckey
)(unsigned char *key
); /* for ssh 2 */
105 void (*encrypt
)(unsigned char *blk
, int len
);
106 void (*decrypt
)(unsigned char *blk
, int len
);
112 void (*setcskey
)(unsigned char *key
);
113 void (*setsckey
)(unsigned char *key
);
114 void (*generate
)(unsigned char *blk
, int len
, unsigned long seq
);
115 int (*verify
)(unsigned char *blk
, int len
, unsigned long seq
);
122 * Plugging in another KEX algorithm requires structural chaos,
123 * so it's hard to abstract them into nice little structures
124 * like this. Hence, for the moment, this is just a
125 * placeholder. I claim justification in the fact that OpenSSH
132 void *(*newkey
)(char *data
, int len
);
133 void (*freekey
)(void *key
);
134 char *(*fmtkey
)(void *key
);
135 char *(*fingerprint
)(void *key
);
136 int (*verifysig
)(void *key
, char *sig
, int siglen
,
137 char *data
, int datalen
);
138 int (*sign
)(void *key
, char *sig
, int siglen
,
139 char *data
, int datalen
);
141 char *keytype
; /* for host key cache */
144 struct ssh_compress
{
146 void (*compress_init
)(void);
147 int (*compress
)(unsigned char *block
, int len
,
148 unsigned char **outblock
, int *outlen
);
149 void (*decompress_init
)(void);
150 int (*decompress
)(unsigned char *block
, int len
,
151 unsigned char **outblock
, int *outlen
);
155 void SHATransform(word32
*digest
, word32
*data
);
158 int random_byte(void);
159 void random_add_noise(void *noise
, int length
);
160 void random_add_heavynoise(void *noise
, int length
);
162 void logevent (char *);
164 Bignum
newbn(int length
);
165 Bignum
copybn(Bignum b
);
166 Bignum
bignum_from_short(unsigned short n
);
167 void freebn(Bignum b
);
168 Bignum
modpow(Bignum base
, Bignum exp
, Bignum mod
);
169 Bignum
modmul(Bignum a
, Bignum b
, Bignum mod
);
170 void decbn(Bignum n
);
171 extern Bignum Zero
, One
;
172 int ssh1_read_bignum(unsigned char *data
, Bignum
*result
);
173 int ssh1_bignum_bitcount(Bignum bn
);
174 int ssh1_bignum_length(Bignum bn
);
175 int bignum_byte(Bignum bn
, int i
);
176 int bignum_bit(Bignum bn
, int i
);
177 void bignum_set_bit(Bignum bn
, int i
, int value
);
178 int ssh1_write_bignum(void *data
, Bignum bn
);
179 Bignum
biggcd(Bignum a
, Bignum b
);
180 unsigned short bignum_mod_short(Bignum number
, unsigned short modulus
);
181 Bignum
bignum_add_long(Bignum number
, unsigned long addend
);
182 Bignum
bigmul(Bignum a
, Bignum b
);
183 Bignum
modinv(Bignum number
, Bignum modulus
);
184 Bignum
bignum_rshift(Bignum number
, int shift
);
185 int bignum_cmp(Bignum a
, Bignum b
);
186 char *bignum_decimal(Bignum x
);
188 Bignum
dh_create_e(void);
189 Bignum
dh_find_K(Bignum f
);
191 int loadrsakey(char *filename
, struct RSAKey
*key
, struct RSAAux
*aux
,
193 int rsakey_encrypted(char *filename
, char **comment
);
195 int saversakey(char *filename
, struct RSAKey
*key
, struct RSAAux
*aux
,
198 void des3_decrypt_pubkey(unsigned char *key
,
199 unsigned char *blk
, int len
);
200 void des3_encrypt_pubkey(unsigned char *key
,
201 unsigned char *blk
, int len
);
204 * For progress updates in the key generation utility.
206 typedef void (*progfn_t
)(void *param
, int phase
, int progress
);
208 int rsa_generate(struct RSAKey
*key
, struct RSAAux
*aux
, int bits
,
209 progfn_t pfn
, void *pfnparam
);
210 Bignum
primegen(int bits
, int modulus
, int residue
,
211 int phase
, progfn_t pfn
, void *pfnparam
);
216 void zlib_compress_init(void);
217 void zlib_decompress_init(void);
218 int zlib_compress_block(unsigned char *block
, int len
,
219 unsigned char **outblock
, int *outlen
);
220 int zlib_decompress_block(unsigned char *block
, int len
,
221 unsigned char **outblock
, int *outlen
);