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Make endomorphism optimization optional

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This commit is contained in:
Pieter Wuille
2013-12-01 21:06:20 +01:00
parent ad52495d72
commit 399c03f227
4 changed files with 53 additions and 19 deletions
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src/group.h
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@@ -98,11 +98,13 @@ void static secp256k1_gej_add_ge(secp256k1_gej_t *r, const secp256k1_gej_t *a, c
/** Get a hex representation of a point. *rlen will be overwritten with the real length. */
void static secp256k1_gej_get_hex(char *r, int *rlen, const secp256k1_gej_t *a);
#ifdef USE_ENDOMORPHISM
/** Set r to be equal to lambda times a, where lambda is chosen in a way such that this is very fast. */
void static secp256k1_gej_mul_lambda(secp256k1_gej_t *r, const secp256k1_gej_t *a);
/** Find r1 and r2 such that r1+r2*lambda = a, and r1 and r2 are maximum 128 bits long (given that a is
not more than 256 bits). */
void static secp256k1_gej_split_exp(secp256k1_num_t *r1, secp256k1_num_t *r2, const secp256k1_num_t *a);
#endif
#endif