diff options
Diffstat (limited to 'vendor/github.com/ethereum/go-ethereum/crypto/secp256k1/libsecp256k1/src/ecmult.h')
-rw-r--r-- | vendor/github.com/ethereum/go-ethereum/crypto/secp256k1/libsecp256k1/src/ecmult.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/vendor/github.com/ethereum/go-ethereum/crypto/secp256k1/libsecp256k1/src/ecmult.h b/vendor/github.com/ethereum/go-ethereum/crypto/secp256k1/libsecp256k1/src/ecmult.h new file mode 100644 index 000000000..20484134f --- /dev/null +++ b/vendor/github.com/ethereum/go-ethereum/crypto/secp256k1/libsecp256k1/src/ecmult.h @@ -0,0 +1,31 @@ +/********************************************************************** + * 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_ +#define _SECP256K1_ECMULT_ + +#include "num.h" +#include "group.h" + +typedef struct { + /* For accelerating the computation of a*P + b*G: */ + secp256k1_ge_storage (*pre_g)[]; /* odd multiples of the generator */ +#ifdef USE_ENDOMORPHISM + secp256k1_ge_storage (*pre_g_128)[]; /* odd multiples of 2^128*generator */ +#endif +} secp256k1_ecmult_context; + +static void secp256k1_ecmult_context_init(secp256k1_ecmult_context *ctx); +static void secp256k1_ecmult_context_build(secp256k1_ecmult_context *ctx, const secp256k1_callback *cb); +static void secp256k1_ecmult_context_clone(secp256k1_ecmult_context *dst, + const secp256k1_ecmult_context *src, const secp256k1_callback *cb); +static void secp256k1_ecmult_context_clear(secp256k1_ecmult_context *ctx); +static int secp256k1_ecmult_context_is_built(const secp256k1_ecmult_context *ctx); + +/** Double multiply: R = na*A + ng*G */ +static void secp256k1_ecmult(const secp256k1_ecmult_context *ctx, secp256k1_gej *r, const secp256k1_gej *a, const secp256k1_scalar *na, const secp256k1_scalar *ng); + +#endif |