Use scratch space dependent batching in ecmult_multi

2017-11-05 19:40:18 +00:00
parent 355a38f113
commit 36b22c9337
3 changed files with 192 additions and 55 deletions
--- a/src/ecmult.h
+++ b/src/ecmult.h
@@ -34,6 +34,10 @@ typedef int (secp256k1_ecmult_multi_callback)(secp256k1_scalar *sc, secp256k1_ge

 /**
 * Multi-multiply: R = inp_g_sc * G + sum_i ni * Ai.
+ * Chooses the right algorithm for a given number of points and scratch space
+ * size. Resets and overwrites the given scratch space. If the points do not
+ * fit in the scratch space the algorithm is repeatedly run with batches of
+ * points.
 * Returns: 1 on success (including when inp_g_sc is NULL and n is 0)
 *          0 if there is not enough scratch space for a single point or
 *          callback returns 0