#endif
#ifdef THIRTY_TWO_BIT
-#ifdef WIN32
+#if defined(WIN32) && !defined(__GNUC__)
#define BN_ULLONG unsigned _int64
#else
#define BN_ULLONG unsigned long long
void BN_clear_free(BIGNUM *a);
BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b);
BIGNUM *BN_bin2bn(const unsigned char *s,int len,BIGNUM *ret);
-int BN_bn2bin(BIGNUM *a, unsigned char *to);
+int BN_bn2bin(const BIGNUM *a, unsigned char *to);
BIGNUM *BN_mpi2bn(unsigned char *s,int len,BIGNUM *ret);
-int BN_bn2mpi(BIGNUM *a, unsigned char *to);
+int BN_bn2mpi(const BIGNUM *a, unsigned char *to);
int BN_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
int BN_usub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
int BN_uadd(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
int BN_ucmp(const BIGNUM *a, const BIGNUM *b);
int BN_set_bit(BIGNUM *a, int n);
int BN_clear_bit(BIGNUM *a, int n);
-char * BN_bn2hex(BIGNUM *a);
-char * BN_bn2dec(BIGNUM *a);
-int BN_hex2bn(BIGNUM **a,char *str);
-int BN_dec2bn(BIGNUM **a,char *str);
+char * BN_bn2hex(const BIGNUM *a);
+char * BN_bn2dec(const BIGNUM *a);
+int BN_hex2bn(BIGNUM **a, const char *str);
+int BN_dec2bn(BIGNUM **a, const char *str);
int BN_gcd(BIGNUM *r,BIGNUM *in_a,BIGNUM *in_b,BN_CTX *ctx);
BIGNUM *BN_mod_inverse(BIGNUM *ret,BIGNUM *a, const BIGNUM *n,BN_CTX *ctx);
BIGNUM *BN_generate_prime(BIGNUM *ret,int bits,int strong,BIGNUM *add,