crypto/bn_int.h

   1 /*
   2  * Some BIGNUM functions assume most significant limb to be non-zero, which
   3  * is customarily arranged by bn_correct_top. Output from below functions
   4  * is not processed with bn_correct_top, and for this reason it may not be
   5  * returned out of public API. It may only be passed internally into other
   6  * functions known to support non-minimal or zero-padded BIGNUMs.
   7  */
   8 int bn_mul_mont_fixed_top(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
   9                           BN_MONT_CTX *mont, BN_CTX *ctx);
  10 int bn_from_mont_fixed_top(BIGNUM *r, const BIGNUM *a, BN_MONT_CTX *mont,
  11                            BN_CTX *ctx);
  12 int bn_to_mont_fixed_top(BIGNUM *r, const BIGNUM *a, BN_MONT_CTX *mont,
  13                          BN_CTX *ctx);
  14 int bn_mod_add_fixed_top(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
  15                          const BIGNUM *m);
  16 int bn_mod_sub_fixed_top(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
  17                          const BIGNUM *m);
  18 int bn_mul_fixed_top(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx);
  19 int bn_sqr_fixed_top(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx);
  20
  21 int bn_bn2binpad(const BIGNUM *a, unsigned char *to, int tolen);