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
23 #ifndef BIGNUM_INTERNAL
31 unsigned long exponent
;
32 unsigned char *modulus
;
36 Bignum private_exponent
;
47 int makekey(unsigned char *data
, struct RSAKey
*result
,
48 unsigned char **keystr
, int order
);
49 int makeprivate(unsigned char *data
, struct RSAKey
*result
);
50 void rsaencrypt(unsigned char *data
, int length
, struct RSAKey
*key
);
51 Bignum
rsadecrypt(Bignum input
, struct RSAKey
*key
);
52 void rsasign(unsigned char *data
, int length
, struct RSAKey
*key
);
53 void rsasanitise(struct RSAKey
*key
);
54 int rsastr_len(struct RSAKey
*key
);
55 void rsastr_fmt(char *str
, struct RSAKey
*key
);
56 void rsa_fingerprint(char *str
, int len
, struct RSAKey
*key
);
57 void freersakey(struct RSAKey
*key
);
59 typedef unsigned int word32
;
60 typedef unsigned int uint32
;
62 unsigned long crc32(const void *s
, size_t len
);
73 unsigned char block
[64];
79 void MD5Init(struct MD5Context
*context
);
80 void MD5Update(struct MD5Context
*context
, unsigned char const *buf
,
82 void MD5Final(unsigned char digest
[16], struct MD5Context
*context
);
86 unsigned char block
[64];
91 void SHA_Init(SHA_State
*s
);
92 void SHA_Bytes(SHA_State
*s
, void *p
, int len
);
93 void SHA_Final(SHA_State
*s
, unsigned char *output
);
94 void SHA_Simple(void *p
, int len
, unsigned char *output
);
97 void (*sesskey
)(unsigned char *key
); /* for ssh 1 */
98 void (*setcsiv
)(unsigned char *key
); /* for ssh 2 */
99 void (*setcskey
)(unsigned char *key
); /* for ssh 2 */
100 void (*setsciv
)(unsigned char *key
); /* for ssh 2 */
101 void (*setsckey
)(unsigned char *key
); /* for ssh 2 */
102 void (*encrypt
)(unsigned char *blk
, int len
);
103 void (*decrypt
)(unsigned char *blk
, int len
);
109 void (*setcskey
)(unsigned char *key
);
110 void (*setsckey
)(unsigned char *key
);
111 void (*generate
)(unsigned char *blk
, int len
, unsigned long seq
);
112 int (*verify
)(unsigned char *blk
, int len
, unsigned long seq
);
119 * Plugging in another KEX algorithm requires structural chaos,
120 * so it's hard to abstract them into nice little structures
121 * like this. Hence, for the moment, this is just a
122 * placeholder. I claim justification in the fact that OpenSSH
129 void *(*newkey
)(char *data
, int len
);
130 void (*freekey
)(void *key
);
131 char *(*fmtkey
)(void *key
);
132 char *(*fingerprint
)(void *key
);
133 int (*verifysig
)(void *key
, char *sig
, int siglen
,
134 char *data
, int datalen
);
135 int (*sign
)(void *key
, char *sig
, int siglen
,
136 char *data
, int datalen
);
138 char *keytype
; /* for host key cache */
141 struct ssh_compress
{
143 void (*compress_init
)(void);
144 int (*compress
)(unsigned char *block
, int len
,
145 unsigned char **outblock
, int *outlen
);
146 void (*decompress_init
)(void);
147 int (*decompress
)(unsigned char *block
, int len
,
148 unsigned char **outblock
, int *outlen
);
152 void SHATransform(word32
*digest
, word32
*data
);
155 int random_byte(void);
156 void random_add_noise(void *noise
, int length
);
157 void random_add_heavynoise(void *noise
, int length
);
159 void logevent (char *);
161 Bignum
copybn(Bignum b
);
162 Bignum
bn_power_2(int n
);
163 void bn_restore_invariant(Bignum b
);
164 Bignum
bignum_from_short(unsigned short n
);
165 void freebn(Bignum b
);
166 Bignum
modpow(Bignum base
, Bignum exp
, Bignum mod
);
167 Bignum
modmul(Bignum a
, Bignum b
, Bignum mod
);
168 void decbn(Bignum n
);
169 extern Bignum Zero
, One
;
170 Bignum
bignum_from_bytes(unsigned char *data
, int nbytes
);
171 int ssh1_read_bignum(unsigned char *data
, Bignum
*result
);
172 int ssh1_bignum_bitcount(Bignum bn
);
173 int ssh1_bignum_length(Bignum bn
);
174 int bignum_byte(Bignum bn
, int i
);
175 int bignum_bit(Bignum bn
, int i
);
176 void bignum_set_bit(Bignum bn
, int i
, int value
);
177 int ssh1_write_bignum(void *data
, Bignum bn
);
178 Bignum
biggcd(Bignum a
, Bignum b
);
179 unsigned short bignum_mod_short(Bignum number
, unsigned short modulus
);
180 Bignum
bignum_add_long(Bignum number
, unsigned long addend
);
181 Bignum
bigmul(Bignum a
, Bignum b
);
182 Bignum
modinv(Bignum number
, Bignum modulus
);
183 Bignum
bignum_bitmask(Bignum number
);
184 Bignum
bignum_rshift(Bignum number
, int shift
);
185 int bignum_cmp(Bignum a
, Bignum b
);
186 char *bignum_decimal(Bignum x
);
188 void dh_setup_group1(void);
189 void dh_cleanup(void);
190 Bignum
dh_create_e(void);
191 Bignum
dh_find_K(Bignum f
);
193 int loadrsakey(char *filename
, struct RSAKey
*key
, struct RSAAux
*aux
,
195 int rsakey_encrypted(char *filename
, char **comment
);
197 int saversakey(char *filename
, struct RSAKey
*key
, struct RSAAux
*aux
,
200 void des3_decrypt_pubkey(unsigned char *key
,
201 unsigned char *blk
, int len
);
202 void des3_encrypt_pubkey(unsigned char *key
,
203 unsigned char *blk
, int len
);
206 * For progress updates in the key generation utility.
208 typedef void (*progfn_t
)(void *param
, int phase
, int progress
);
210 int rsa_generate(struct RSAKey
*key
, struct RSAAux
*aux
, int bits
,
211 progfn_t pfn
, void *pfnparam
);
212 Bignum
primegen(int bits
, int modulus
, int residue
,
213 int phase
, progfn_t pfn
, void *pfnparam
);
218 void zlib_compress_init(void);
219 void zlib_decompress_init(void);
220 int zlib_compress_block(unsigned char *block
, int len
,
221 unsigned char **outblock
, int *outlen
);
222 int zlib_decompress_block(unsigned char *block
, int len
,
223 unsigned char **outblock
, int *outlen
);