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 {
143 void SHATransform(word32 *digest, word32 *data);
146 int random_byte(void);
147 void random_add_noise(void *noise, int length);
148 void random_add_heavynoise(void *noise, int length);
150 void logevent (char *);
152 Bignum newbn(int length);
153 Bignum copybn(Bignum b);
154 Bignum bignum_from_short(unsigned short n);
155 void freebn(Bignum b);
156 void modpow(Bignum base, Bignum exp, Bignum mod, Bignum result);
157 void modmul(Bignum a, Bignum b, Bignum mod, Bignum result);
158 void decbn(Bignum n);
159 extern Bignum Zero, One;
160 int ssh1_read_bignum(unsigned char *data, Bignum *result);
161 int ssh1_bignum_bitcount(Bignum bn);
162 int ssh1_bignum_length(Bignum bn);
163 int bignum_byte(Bignum bn, int i);
164 int bignum_bit(Bignum bn, int i);
165 void bignum_set_bit(Bignum bn, int i, int value);
166 int ssh1_write_bignum(void *data, Bignum bn);
167 Bignum biggcd(Bignum a, Bignum b);
168 unsigned short bignum_mod_short(Bignum number, unsigned short modulus);
169 Bignum bignum_add_long(Bignum number, unsigned long addend);
170 Bignum bigmul(Bignum a, Bignum b);
171 Bignum modinv(Bignum number, Bignum modulus);
172 Bignum bignum_rshift(Bignum number, int shift);
173 int bignum_cmp(Bignum a, Bignum b);
174 char *bignum_decimal(Bignum x);
176 Bignum dh_create_e(void);
177 Bignum dh_find_K(Bignum f);
179 int loadrsakey(char *filename, struct RSAKey *key, struct RSAAux *aux,
181 int rsakey_encrypted(char *filename, char **comment);
183 int saversakey(char *filename, struct RSAKey *key, struct RSAAux *aux,
186 void des3_decrypt_pubkey(unsigned char *key,
187 unsigned char *blk, int len);
188 void des3_encrypt_pubkey(unsigned char *key,
189 unsigned char *blk, int len);
192 * For progress updates in the key generation utility.
194 typedef void (*progfn_t)(void *param, int phase, int progress);
196 int rsa_generate(struct RSAKey *key, struct RSAAux *aux, int bits,
197 progfn_t pfn, void *pfnparam);
198 Bignum primegen(int bits, int modulus, int residue,
199 int phase, progfn_t pfn, void *pfnparam);