+BN_MONT_CTX *BN_MONT_CTX_copy(BN_MONT_CTX *to,BN_MONT_CTX *from);
+
+BN_BLINDING *BN_BLINDING_new(BIGNUM *A,BIGNUM *Ai,BIGNUM *mod);
+void BN_BLINDING_free(BN_BLINDING *b);
+int BN_BLINDING_update(BN_BLINDING *b,BN_CTX *ctx);
+int BN_BLINDING_convert(BIGNUM *n, BN_BLINDING *r, BN_CTX *ctx);
+int BN_BLINDING_invert(BIGNUM *n, BN_BLINDING *b, BN_CTX *ctx);
+
+void BN_set_params(int mul,int high,int low,int mont);
+int BN_get_params(int which); /* 0, mul, 1 high, 2 low, 3 mont */
+
+void BN_RECP_CTX_init(BN_RECP_CTX *recp);
+BN_RECP_CTX *BN_RECP_CTX_new(void);
+void BN_RECP_CTX_free(BN_RECP_CTX *recp);
+int BN_RECP_CTX_set(BN_RECP_CTX *recp,BIGNUM *rdiv,BN_CTX *ctx);
+int BN_mod_mul_reciprocal(BIGNUM *r, BIGNUM *x, BIGNUM *y,
+ BN_RECP_CTX *recp,BN_CTX *ctx);
+int BN_mod_exp_recp(BIGNUM *r, BIGNUM *a, BIGNUM *p, BIGNUM *m,BN_CTX *ctx);
+int BN_div_recp(BIGNUM *dv, BIGNUM *rem, BIGNUM *m,
+ BN_RECP_CTX *recp, BN_CTX *ctx);