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88 lines
3.1 KiB
88 lines
3.1 KiB
/**********************************************************************
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* Copyright (c) 2013, 2014, 2015 Thomas Daede, Cory Fields *
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* Distributed under the MIT software license, see the accompanying *
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* file COPYING or http://www.opensource.org/licenses/mit-license.php.*
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**********************************************************************/
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// Autotools creates libsecp256k1-config.h, of which ECMULT_GEN_PREC_BITS is needed.
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// ifndef guard so downstream users can define their own if they do not use autotools.
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#if !defined(ECMULT_GEN_PREC_BITS)
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#include "libsecp256k1-config.h"
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#endif
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#define USE_BASIC_CONFIG 1
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#include "basic-config.h"
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#include "include/secp256k1.h"
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#include "util.h"
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#include "field_impl.h"
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#include "scalar_impl.h"
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#include "group_impl.h"
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#include "ecmult_gen_impl.h"
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static void default_error_callback_fn(const char* str, void* data) {
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(void)data;
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fprintf(stderr, "[libsecp256k1] internal consistency check failed: %s\n", str);
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abort();
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}
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static const secp256k1_callback default_error_callback = {
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default_error_callback_fn,
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NULL
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};
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int main(int argc, char **argv) {
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secp256k1_ecmult_gen_context ctx;
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void *prealloc, *base;
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int inner;
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int outer;
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FILE* fp;
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(void)argc;
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(void)argv;
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fp = fopen("src/ecmult_static_context.h","w");
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if (fp == NULL) {
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fprintf(stderr, "Could not open src/ecmult_static_context.h for writing!\n");
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return -1;
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}
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fprintf(fp, "#ifndef _SECP256K1_ECMULT_STATIC_CONTEXT_\n");
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fprintf(fp, "#define _SECP256K1_ECMULT_STATIC_CONTEXT_\n");
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fprintf(fp, "#include \"src/group.h\"\n");
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fprintf(fp, "#define SC SECP256K1_GE_STORAGE_CONST\n");
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fprintf(fp, "#if ECMULT_GEN_PREC_N != %d || ECMULT_GEN_PREC_G != %d\n", ECMULT_GEN_PREC_N, ECMULT_GEN_PREC_G);
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fprintf(fp, " #error configuration mismatch, invalid ECMULT_GEN_PREC_N, ECMULT_GEN_PREC_G. Try deleting ecmult_static_context.h before the build.\n");
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fprintf(fp, "#endif\n");
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fprintf(fp, "static const secp256k1_ge_storage secp256k1_ecmult_static_context[ECMULT_GEN_PREC_N][ECMULT_GEN_PREC_G] = {\n");
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base = checked_malloc(&default_error_callback, SECP256K1_ECMULT_GEN_CONTEXT_PREALLOCATED_SIZE);
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prealloc = base;
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secp256k1_ecmult_gen_context_init(&ctx);
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secp256k1_ecmult_gen_context_build(&ctx, &prealloc);
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for(outer = 0; outer != ECMULT_GEN_PREC_N; outer++) {
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fprintf(fp,"{\n");
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for(inner = 0; inner != ECMULT_GEN_PREC_G; inner++) {
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fprintf(fp," SC(%uu, %uu, %uu, %uu, %uu, %uu, %uu, %uu, %uu, %uu, %uu, %uu, %uu, %uu, %uu, %uu)", SECP256K1_GE_STORAGE_CONST_GET((*ctx.prec)[outer][inner]));
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if (inner != ECMULT_GEN_PREC_G - 1) {
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fprintf(fp,",\n");
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} else {
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fprintf(fp,"\n");
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}
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}
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if (outer != ECMULT_GEN_PREC_N - 1) {
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fprintf(fp,"},\n");
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} else {
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fprintf(fp,"}\n");
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}
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}
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fprintf(fp,"};\n");
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secp256k1_ecmult_gen_context_clear(&ctx);
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free(base);
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fprintf(fp, "#undef SC\n");
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fprintf(fp, "#endif\n");
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fclose(fp);
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return 0;
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}
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