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1 | #include <string.h> |
2 | |
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3 | /* |
4 | * Useful thing. |
5 | */ |
6 | #ifndef lenof |
7 | #define lenof(x) ( (sizeof((x))) / (sizeof(*(x)))) |
8 | #endif |
9 | |
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10 | #define SSH_CIPHER_IDEA 1 |
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11 | #define SSH_CIPHER_DES 2 |
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12 | #define SSH_CIPHER_3DES 3 |
13 | #define SSH_CIPHER_BLOWFISH 6 |
14 | |
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15 | #ifdef MSCRYPTOAPI |
16 | #define APIEXTRA 8 |
17 | #else |
18 | #define APIEXTRA 0 |
19 | #endif |
20 | |
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21 | struct RSAKey { |
22 | int bits; |
23 | int bytes; |
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24 | #ifdef MSCRYPTOAPI |
25 | unsigned long exponent; |
26 | unsigned char *modulus; |
27 | #else |
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28 | void *modulus; |
29 | void *exponent; |
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30 | #endif |
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31 | }; |
32 | |
33 | int makekey(unsigned char *data, struct RSAKey *result, |
34 | unsigned char **keystr); |
35 | void rsaencrypt(unsigned char *data, int length, struct RSAKey *key); |
36 | int rsastr_len(struct RSAKey *key); |
37 | void rsastr_fmt(char *str, struct RSAKey *key); |
38 | |
39 | typedef unsigned int word32; |
40 | typedef unsigned int uint32; |
41 | |
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42 | unsigned long crc32(const void *s, size_t len); |
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43 | |
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44 | typedef struct { |
45 | uint32 h[4]; |
46 | } MD5_Core_State; |
47 | |
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48 | struct MD5Context { |
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49 | #ifdef MSCRYPTOAPI |
50 | unsigned long hHash; |
51 | #else |
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52 | MD5_Core_State core; |
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53 | unsigned char block[64]; |
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54 | int blkused; |
55 | uint32 lenhi, lenlo; |
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56 | #endif |
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57 | }; |
58 | |
59 | void MD5Init(struct MD5Context *context); |
60 | void MD5Update(struct MD5Context *context, unsigned char const *buf, |
61 | unsigned len); |
62 | void MD5Final(unsigned char digest[16], struct MD5Context *context); |
63 | |
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64 | typedef struct { |
65 | uint32 h[5]; |
66 | unsigned char block[64]; |
67 | int blkused; |
68 | uint32 lenhi, lenlo; |
69 | } SHA_State; |
70 | |
71 | void SHA_Init(SHA_State *s); |
72 | void SHA_Bytes(SHA_State *s, void *p, int len); |
73 | void SHA_Final(SHA_State *s, unsigned char *output); |
74 | |
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75 | struct ssh_cipher { |
76 | void (*sesskey)(unsigned char *key); |
77 | void (*encrypt)(unsigned char *blk, int len); |
78 | void (*decrypt)(unsigned char *blk, int len); |
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79 | char *name; |
80 | int blksize; |
81 | }; |
82 | |
83 | struct ssh_mac { |
84 | void (*sesskey)(unsigned char *key, int len); |
85 | void (*generate)(unsigned char *blk, int len, unsigned long seq); |
86 | int (*verify)(unsigned char *blk, int len, unsigned long seq); |
87 | char *name; |
88 | int len; |
89 | }; |
90 | |
91 | struct ssh_kex { |
92 | char *name; |
93 | }; |
94 | |
95 | struct ssh_hostkey { |
96 | char *name; |
97 | }; |
98 | |
99 | struct ssh_compress { |
100 | char *name; |
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101 | }; |
102 | |
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103 | #ifndef MSCRYPTOAPI |
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104 | void SHATransform(word32 *digest, word32 *data); |
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105 | #endif |
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106 | |
107 | int random_byte(void); |
108 | void random_add_noise(void *noise, int length); |
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109 | |
110 | void logevent (char *); |
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111 | |
112 | /* |
113 | * A Bignum is stored as a sequence of `unsigned short' words. The |
114 | * first tells how many remain; the remaining ones are digits, LS |
115 | * first. |
116 | */ |
117 | typedef unsigned short *Bignum; |
118 | |
119 | Bignum newbn(int length); |
120 | void freebn(Bignum b); |
121 | void modpow(Bignum base, Bignum exp, Bignum mod, Bignum result); |
122 | |
123 | Bignum dh_create_e(void); |
124 | Bignum dh_find_K(Bignum f); |