| 1 | #include <string.h> |
| 2 | |
| 3 | /* |
| 4 | * Useful thing. |
| 5 | */ |
| 6 | #ifndef lenof |
| 7 | #define lenof(x) ( (sizeof((x))) / (sizeof(*(x)))) |
| 8 | #endif |
| 9 | |
| 10 | #define SSH_CIPHER_IDEA 1 |
| 11 | #define SSH_CIPHER_DES 2 |
| 12 | #define SSH_CIPHER_3DES 3 |
| 13 | #define SSH_CIPHER_BLOWFISH 6 |
| 14 | |
| 15 | #ifdef MSCRYPTOAPI |
| 16 | #define APIEXTRA 8 |
| 17 | #else |
| 18 | #define APIEXTRA 0 |
| 19 | #endif |
| 20 | |
| 21 | struct RSAKey { |
| 22 | int bits; |
| 23 | int bytes; |
| 24 | #ifdef MSCRYPTOAPI |
| 25 | unsigned long exponent; |
| 26 | unsigned char *modulus; |
| 27 | #else |
| 28 | void *modulus; |
| 29 | void *exponent; |
| 30 | #endif |
| 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 | |
| 42 | unsigned long crc32(const void *s, size_t len); |
| 43 | |
| 44 | typedef struct { |
| 45 | uint32 h[4]; |
| 46 | } MD5_Core_State; |
| 47 | |
| 48 | struct MD5Context { |
| 49 | #ifdef MSCRYPTOAPI |
| 50 | unsigned long hHash; |
| 51 | #else |
| 52 | MD5_Core_State core; |
| 53 | unsigned char block[64]; |
| 54 | int blkused; |
| 55 | uint32 lenhi, lenlo; |
| 56 | #endif |
| 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 | |
| 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 | |
| 75 | struct ssh_cipher { |
| 76 | void (*sesskey)(unsigned char *key); /* for ssh 1 */ |
| 77 | void (*setcsiv)(unsigned char *key); /* for ssh 2 */ |
| 78 | void (*setcskey)(unsigned char *key); /* for ssh 2 */ |
| 79 | void (*setsciv)(unsigned char *key); /* for ssh 2 */ |
| 80 | void (*setsckey)(unsigned char *key); /* for ssh 2 */ |
| 81 | void (*encrypt)(unsigned char *blk, int len); |
| 82 | void (*decrypt)(unsigned char *blk, int len); |
| 83 | char *name; |
| 84 | int blksize; |
| 85 | }; |
| 86 | |
| 87 | struct ssh_mac { |
| 88 | void (*setcskey)(unsigned char *key); |
| 89 | void (*setsckey)(unsigned char *key); |
| 90 | void (*generate)(unsigned char *blk, int len, unsigned long seq); |
| 91 | int (*verify)(unsigned char *blk, int len, unsigned long seq); |
| 92 | char *name; |
| 93 | int len; |
| 94 | }; |
| 95 | |
| 96 | struct ssh_kex { |
| 97 | char *name; |
| 98 | }; |
| 99 | |
| 100 | struct ssh_hostkey { |
| 101 | char *name; |
| 102 | }; |
| 103 | |
| 104 | struct ssh_compress { |
| 105 | char *name; |
| 106 | }; |
| 107 | |
| 108 | #ifndef MSCRYPTOAPI |
| 109 | void SHATransform(word32 *digest, word32 *data); |
| 110 | #endif |
| 111 | |
| 112 | int random_byte(void); |
| 113 | void random_add_noise(void *noise, int length); |
| 114 | |
| 115 | void logevent (char *); |
| 116 | |
| 117 | /* |
| 118 | * A Bignum is stored as a sequence of `unsigned short' words. The |
| 119 | * first tells how many remain; the remaining ones are digits, LS |
| 120 | * first. |
| 121 | */ |
| 122 | typedef unsigned short *Bignum; |
| 123 | |
| 124 | Bignum newbn(int length); |
| 125 | void freebn(Bignum b); |
| 126 | void modpow(Bignum base, Bignum exp, Bignum mod, Bignum result); |
| 127 | |
| 128 | Bignum dh_create_e(void); |
| 129 | Bignum dh_find_K(Bignum f); |