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author | Wei-Ning Huang <w@dexon.org> | 2019-04-18 14:15:11 +0800 |
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committer | Wei-Ning Huang <w@byzantine-lab.io> | 2019-06-15 22:09:56 +0800 |
commit | 7f9d5b1f1cb1a07e2600533a85e585c2a6dfe7bd (patch) | |
tree | a6061686cb458ede8f1a72eb9ac8e785bd0d420e /crypto/secp256k1/libsecp256k1/src/ecmult_gen.h | |
parent | a1be735b1cd6d02bc69b9bb011c56e62cec290f5 (diff) | |
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crypto: use go-ethereum secp256k1 package to avoid symbol conflict (#374)
Diffstat (limited to 'crypto/secp256k1/libsecp256k1/src/ecmult_gen.h')
-rw-r--r-- | crypto/secp256k1/libsecp256k1/src/ecmult_gen.h | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/crypto/secp256k1/libsecp256k1/src/ecmult_gen.h b/crypto/secp256k1/libsecp256k1/src/ecmult_gen.h deleted file mode 100644 index eb2cc9ead..000000000 --- a/crypto/secp256k1/libsecp256k1/src/ecmult_gen.h +++ /dev/null @@ -1,43 +0,0 @@ -/********************************************************************** - * Copyright (c) 2013, 2014 Pieter Wuille * - * Distributed under the MIT software license, see the accompanying * - * file COPYING or http://www.opensource.org/licenses/mit-license.php.* - **********************************************************************/ - -#ifndef _SECP256K1_ECMULT_GEN_ -#define _SECP256K1_ECMULT_GEN_ - -#include "scalar.h" -#include "group.h" - -typedef struct { - /* For accelerating the computation of a*G: - * To harden against timing attacks, use the following mechanism: - * * Break up the multiplicand into groups of 4 bits, called n_0, n_1, n_2, ..., n_63. - * * Compute sum(n_i * 16^i * G + U_i, i=0..63), where: - * * U_i = U * 2^i (for i=0..62) - * * U_i = U * (1-2^63) (for i=63) - * where U is a point with no known corresponding scalar. Note that sum(U_i, i=0..63) = 0. - * For each i, and each of the 16 possible values of n_i, (n_i * 16^i * G + U_i) is - * precomputed (call it prec(i, n_i)). The formula now becomes sum(prec(i, n_i), i=0..63). - * None of the resulting prec group elements have a known scalar, and neither do any of - * the intermediate sums while computing a*G. - */ - secp256k1_ge_storage (*prec)[64][16]; /* prec[j][i] = 16^j * i * G + U_i */ - secp256k1_scalar blind; - secp256k1_gej initial; -} secp256k1_ecmult_gen_context; - -static void secp256k1_ecmult_gen_context_init(secp256k1_ecmult_gen_context* ctx); -static void secp256k1_ecmult_gen_context_build(secp256k1_ecmult_gen_context* ctx, const secp256k1_callback* cb); -static void secp256k1_ecmult_gen_context_clone(secp256k1_ecmult_gen_context *dst, - const secp256k1_ecmult_gen_context* src, const secp256k1_callback* cb); -static void secp256k1_ecmult_gen_context_clear(secp256k1_ecmult_gen_context* ctx); -static int secp256k1_ecmult_gen_context_is_built(const secp256k1_ecmult_gen_context* ctx); - -/** Multiply with the generator: R = a*G */ -static void secp256k1_ecmult_gen(const secp256k1_ecmult_gen_context* ctx, secp256k1_gej *r, const secp256k1_scalar *a); - -static void secp256k1_ecmult_gen_blind(secp256k1_ecmult_gen_context *ctx, const unsigned char *seed32); - -#endif |