parameterize ecmult_const over input size

2018-03-13 16:32:51 +00:00
parent dbc3ddd5e2
commit 7c1b91ba4b
7 changed files with 78 additions and 49 deletions
--- a/src/modules/ecdh/main_impl.h
+++ b/src/modules/ecdh/main_impl.h
@@ -30,7 +30,7 @@ int secp256k1_ecdh(const secp256k1_context* ctx, unsigned char *result, const se
        unsigned char y[1];
        secp256k1_sha256 sha;

-        secp256k1_ecmult_const(&res, &pt, &s);
+        secp256k1_ecmult_const(&res, &pt, &s, 256);
        secp256k1_ge_set_gej(&pt, &res);
        /* Compute a hash of the point in compressed form
         * Note we cannot use secp256k1_eckey_pubkey_serialize here since it does not