#include <string.h>
+/*
+ * Useful thing.
+ */
+#ifndef lenof
+#define lenof(x) ( (sizeof((x))) / (sizeof(*(x))))
+#endif
+
#define SSH_CIPHER_IDEA 1
#define SSH_CIPHER_DES 2
#define SSH_CIPHER_3DES 3
#define SSH_CIPHER_BLOWFISH 6
+#ifdef MSCRYPTOAPI
+#define APIEXTRA 8
+#else
+#define APIEXTRA 0
+#endif
+
+/*
+ * A Bignum is stored as a sequence of `unsigned short' words. The
+ * first tells how many remain; the remaining ones are digits, LS
+ * first.
+ */
+typedef unsigned short *Bignum;
+
struct RSAKey {
int bits;
int bytes;
- void *modulus;
- void *exponent;
+#ifdef MSCRYPTOAPI
+ unsigned long exponent;
+ unsigned char *modulus;
+#else
+ Bignum modulus;
+ Bignum exponent;
+ Bignum private_exponent;
+#endif
+ char *comment;
};
int makekey(unsigned char *data, struct RSAKey *result,
- unsigned char **keystr);
+ unsigned char **keystr, int order);
+int makeprivate(unsigned char *data, struct RSAKey *result);
void rsaencrypt(unsigned char *data, int length, struct RSAKey *key);
+Bignum rsadecrypt(Bignum input, struct RSAKey *key);
+void rsasign(unsigned char *data, int length, struct RSAKey *key);
+void rsasanitise(struct RSAKey *key);
int rsastr_len(struct RSAKey *key);
void rsastr_fmt(char *str, struct RSAKey *key);
+void freersakey(struct RSAKey *key);
typedef unsigned int word32;
typedef unsigned int uint32;
-unsigned long crc32(const unsigned char *s, unsigned int len);
+unsigned long crc32(const void *s, size_t len);
+
+typedef struct {
+ uint32 h[4];
+} MD5_Core_State;
struct MD5Context {
- uint32 buf[4];
- uint32 bits[2];
- unsigned char in[64];
+#ifdef MSCRYPTOAPI
+ unsigned long hHash;
+#else
+ MD5_Core_State core;
+ unsigned char block[64];
+ int blkused;
+ uint32 lenhi, lenlo;
+#endif
};
void MD5Init(struct MD5Context *context);
unsigned len);
void MD5Final(unsigned char digest[16], struct MD5Context *context);
+typedef struct {
+ uint32 h[5];
+ unsigned char block[64];
+ int blkused;
+ uint32 lenhi, lenlo;
+} SHA_State;
+
+void SHA_Init(SHA_State *s);
+void SHA_Bytes(SHA_State *s, void *p, int len);
+void SHA_Final(SHA_State *s, unsigned char *output);
+void SHA_Simple(void *p, int len, unsigned char *output);
+
struct ssh_cipher {
- void (*sesskey)(unsigned char *key);
+ void (*sesskey)(unsigned char *key); /* for ssh 1 */
+ void (*setcsiv)(unsigned char *key); /* for ssh 2 */
+ void (*setcskey)(unsigned char *key); /* for ssh 2 */
+ void (*setsciv)(unsigned char *key); /* for ssh 2 */
+ void (*setsckey)(unsigned char *key); /* for ssh 2 */
void (*encrypt)(unsigned char *blk, int len);
void (*decrypt)(unsigned char *blk, int len);
+ char *name;
+ int blksize;
+};
+
+struct ssh_mac {
+ void (*setcskey)(unsigned char *key);
+ void (*setsckey)(unsigned char *key);
+ void (*generate)(unsigned char *blk, int len, unsigned long seq);
+ int (*verify)(unsigned char *blk, int len, unsigned long seq);
+ char *name;
+ int len;
+};
+
+struct ssh_kex {
+ /*
+ * Plugging in another KEX algorithm requires structural chaos,
+ * so it's hard to abstract them into nice little structures
+ * like this. Hence, for the moment, this is just a
+ * placeholder. I claim justification in the fact that OpenSSH
+ * does this too :-)
+ */
+ char *name;
+};
+
+struct ssh_hostkey {
+ void (*setkey)(char *data, int len);
+ char *(*fmtkey)(void);
+ int (*verifysig)(char *sig, int siglen, char *data, int datalen);
+ char *name;
+};
+
+struct ssh_compress {
+ char *name;
};
+#ifndef MSCRYPTOAPI
void SHATransform(word32 *digest, word32 *data);
+#endif
int random_byte(void);
void random_add_noise(void *noise, int length);
void logevent (char *);
+
+Bignum newbn(int length);
+Bignum copybn(Bignum b);
+void freebn(Bignum b);
+void modpow(Bignum base, Bignum exp, Bignum mod, Bignum result);
+void modmul(Bignum a, Bignum b, Bignum mod, Bignum result);
+void decbn(Bignum n);
+extern Bignum Zero, One;
+int ssh1_read_bignum(unsigned char *data, Bignum *result);
+int ssh1_bignum_bitcount(Bignum bn);
+int ssh1_bignum_length(Bignum bn);
+int bignum_byte(Bignum bn, int i);
+int ssh1_write_bignum(void *data, Bignum bn);
+
+Bignum dh_create_e(void);
+Bignum dh_find_K(Bignum f);
+
+int loadrsakey(char *filename, struct RSAKey *key, char *passphrase);
+int rsakey_encrypted(char *filename);
+
+void des3_decrypt_pubkey(unsigned char *key,
+ unsigned char *blk, int len);