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
;
48 int makekey(unsigned char *data
, struct RSAKey
*result
,
49 unsigned char **keystr
, int order
);
50 int makeprivate(unsigned char *data
, struct RSAKey
*result
);
51 void rsaencrypt(unsigned char *data
, int length
, struct RSAKey
*key
);
52 Bignum
rsadecrypt(Bignum input
, struct RSAKey
*key
);
53 void rsasign(unsigned char *data
, int length
, struct RSAKey
*key
);
54 void rsasanitise(struct RSAKey
*key
);
55 int rsastr_len(struct RSAKey
*key
);
56 void rsastr_fmt(char *str
, struct RSAKey
*key
);
57 void rsa_fingerprint(char *str
, int len
, struct RSAKey
*key
);
58 void freersakey(struct RSAKey
*key
);
60 typedef unsigned int word32
;
61 typedef unsigned int uint32
;
63 unsigned long crc32(const void *s
, size_t len
);
74 unsigned char block
[64];
80 void MD5Init(struct MD5Context
*context
);
81 void MD5Update(struct MD5Context
*context
, unsigned char const *buf
,
83 void MD5Final(unsigned char digest
[16], struct MD5Context
*context
);
87 unsigned char block
[64];
92 void SHA_Init(SHA_State
*s
);
93 void SHA_Bytes(SHA_State
*s
, void *p
, int len
);
94 void SHA_Final(SHA_State
*s
, unsigned char *output
);
95 void SHA_Simple(void *p
, int len
, unsigned char *output
);
98 void (*sesskey
)(unsigned char *key
); /* for ssh 1 */
99 void (*setcsiv
)(unsigned char *key
); /* for ssh 2 */
100 void (*setcskey
)(unsigned char *key
); /* for ssh 2 */
101 void (*setsciv
)(unsigned char *key
); /* for ssh 2 */
102 void (*setsckey
)(unsigned char *key
); /* for ssh 2 */
103 void (*encrypt
)(unsigned char *blk
, int len
);
104 void (*decrypt
)(unsigned char *blk
, int len
);
110 void (*setcskey
)(unsigned char *key
);
111 void (*setsckey
)(unsigned char *key
);
112 void (*generate
)(unsigned char *blk
, int len
, unsigned long seq
);
113 int (*verify
)(unsigned char *blk
, int len
, unsigned long seq
);
120 * Plugging in another KEX algorithm requires structural chaos,
121 * so it's hard to abstract them into nice little structures
122 * like this. Hence, for the moment, this is just a
123 * placeholder. I claim justification in the fact that OpenSSH
130 void (*setkey
)(char *data
, int len
);
131 char *(*fmtkey
)(void);
132 char *(*fingerprint
)(void);
133 int (*verifysig
)(char *sig
, int siglen
, char *data
, int datalen
);
135 char *keytype
; /* for host key cache */
138 struct ssh_compress
{
140 void (*compress_init
)(void);
141 int (*compress
)(unsigned char *block
, int len
,
142 unsigned char **outblock
, int *outlen
);
143 void (*decompress_init
)(void);
144 int (*decompress
)(unsigned char *block
, int len
,
145 unsigned char **outblock
, int *outlen
);
149 void SHATransform(word32
*digest
, word32
*data
);
152 int random_byte(void);
153 void random_add_noise(void *noise
, int length
);
154 void random_add_heavynoise(void *noise
, int length
);
156 void logevent (char *);
158 Bignum
newbn(int length
);
159 Bignum
copybn(Bignum b
);
160 Bignum
bignum_from_short(unsigned short n
);
161 void freebn(Bignum b
);
162 Bignum
modpow(Bignum base
, Bignum exp
, Bignum mod
);
163 Bignum
modmul(Bignum a
, Bignum b
, Bignum mod
);
164 void decbn(Bignum n
);
165 extern Bignum Zero
, One
;
166 int ssh1_read_bignum(unsigned char *data
, Bignum
*result
);
167 int ssh1_bignum_bitcount(Bignum bn
);
168 int ssh1_bignum_length(Bignum bn
);
169 int bignum_byte(Bignum bn
, int i
);
170 int bignum_bit(Bignum bn
, int i
);
171 void bignum_set_bit(Bignum bn
, int i
, int value
);
172 int ssh1_write_bignum(void *data
, Bignum bn
);
173 Bignum
biggcd(Bignum a
, Bignum b
);
174 unsigned short bignum_mod_short(Bignum number
, unsigned short modulus
);
175 Bignum
bignum_add_long(Bignum number
, unsigned long addend
);
176 Bignum
bigmul(Bignum a
, Bignum b
);
177 Bignum
modinv(Bignum number
, Bignum modulus
);
178 Bignum
bignum_rshift(Bignum number
, int shift
);
179 int bignum_cmp(Bignum a
, Bignum b
);
180 char *bignum_decimal(Bignum x
);
182 Bignum
dh_create_e(void);
183 Bignum
dh_find_K(Bignum f
);
185 int loadrsakey(char *filename
, struct RSAKey
*key
, struct RSAAux
*aux
,
187 int rsakey_encrypted(char *filename
, char **comment
);
189 int saversakey(char *filename
, struct RSAKey
*key
, struct RSAAux
*aux
,
192 void des3_decrypt_pubkey(unsigned char *key
,
193 unsigned char *blk
, int len
);
194 void des3_encrypt_pubkey(unsigned char *key
,
195 unsigned char *blk
, int len
);
198 * For progress updates in the key generation utility.
200 typedef void (*progfn_t
)(void *param
, int phase
, int progress
);
202 int rsa_generate(struct RSAKey
*key
, struct RSAAux
*aux
, int bits
,
203 progfn_t pfn
, void *pfnparam
);
204 Bignum
primegen(int bits
, int modulus
, int residue
,
205 int phase
, progfn_t pfn
, void *pfnparam
);
210 void zlib_compress_init(void);
211 void zlib_decompress_init(void);
212 int zlib_compress_block(unsigned char *block
, int len
,
213 unsigned char **outblock
, int *outlen
);
214 int zlib_decompress_block(unsigned char *block
, int len
,
215 unsigned char **outblock
, int *outlen
);