Squashed 'src/secp256k1/' changes from be8d9c262f..0559fc6e41

0559fc6e41 Merge bitcoin-core/secp256k1#988: Make signing table fully static
7dfceceea6 build: Remove #undef hack for ASM in the precomputation programs
bb36fe9be0 ci: Test `make precomp`
d94a37a20c build: Remove CC_FOR_BUILD stuff
ad63bb4c29 build: Prebuild and distribute ecmult_gen table
ac49361ed0 prealloc: Get rid of manual memory management for prealloc contexts
6573c08f65 ecmult_gen: Tidy precomputed file and save space
5eba83f17c ecmult_gen: Precompute tables for all values of ECMULT_GEN_PREC_BITS
5d0dbef018 Merge bitcoin-core/secp256k1#942: Verify that secp256k1_ge_set_gej_zinv does not operate on infinity.
486205aa68 Merge bitcoin-core/secp256k1#920: Test all ecmult functions with many j*2^i combinations
fdb33dd122 refactor: Make PREC_BITS a parameter of ecmult_gen_build_prec_table
5eb519e1f6 ci: reduce TEST_ITERS in memcheck run
e2cf77328a Test ecmult functions for all i*2^j for j=0..255 and odd i=1..255.
61ae37c612 Merge bitcoin-core/secp256k1#1022: build: Windows DLL additions
4f01840b82 Merge bitcoin-core/secp256k1#1027: build: Add a check that Valgrind actually supports a host platform
6ad908aa00 Merge bitcoin-core/secp256k1#1008: bench.c: add `--help` option and ci: move env variables
592661c22f ci: move test environment variable declaration to .cirrus.yml
dcbe84b841 bench: add --help option to bench.
099bad945e Comment and check a parameter for inf in secp256k1_ecmult_const.
6c0be857f8 Verify that secp256k1_ge_set_gej_zinv does not operate on infinity. a->x and a->y should not be used if the infinity flag is set.
4900227451 Merge bitcoin-core/secp256k1#1025: build: replace backtick command substitution with $()
7c7ce872a5 build: Add a check that Valgrind actually supports a host platform
a4875e30a6 refactor: Move default callbacks to util.h
4c94c55bce doc: Remove obsolete hint for valgrind stack size
5106226991 exhaustive_tests: Fix with ecmult_gen table with custom generator
e1a76530db refactor: Make generator a parameter of ecmult_gen_create_prec_table
9ad09f6911 refactor: Rename program that generates static ecmult_gen table
8ae18f1ab3 refactor: Rename file that contains static ecmult_gen table
00d2fa116e ecmult_gen: Make code consistent with comment
3b0c2185ea ecmult_gen: Simplify ecmult_gen context after making table static
2b7c7497ef build: replace backtick command substitution with $()
49f608de47 Merge bitcoin-core/secp256k1#1004: ecmult: fix definition of STRAUSS_SCRATCH_OBJECTS
c0cd7de6d4 build: add -no-undefined to libtool LDFLAGS
fe32a79d35 build: pass win32-dll to LT_INIT
60bf8890df ecmult: fix definition of STRAUSS_SCRATCH_OBJECTS
fecf436d53 Merge bitcoin-core/secp256k1#1019: build: don't append valgrind CPPFLAGS if not installed (macOS)
2e5e4b67df Merge bitcoin-core/secp256k1#1020: doc: remove use of <0xa0> "no break space"
812ff5c747 doc: remove use of 0xa0 "no break space"
214042a170 build: don't append valgrind CPPFLAGS if not installed
e43ba02cfc refactor: Decouple table generation and ecmult_gen context
22dc2c0a0d ecmult_gen: Move table creation to new file and force static prec
793ad9016a Merge bitcoin-core/secp256k1#1010: doc: Minor fixes in safegcd_implementation.md
dc9b6853b7 doc: Minor fixes in safegcd_implementation.md
ea5e8a9c47 Merge bitcoin-core/secp256k1#1012: Fix typos
233297579d Fix typos
7006f1b97f Merge bitcoin-core/secp256k1#1011: ci: Enable -g if we set CFLAGS manually
72de1359e9 ci: Enable -g if we set CFLAGS manually
74c34e727b Merge bitcoin-core/secp256k1#1009: refactor: Use (int)&(int) in boolean context to avoid compiler warning
16d132215c refactor: Use (int)&(int) in boolean context to avoid compiler warning
c74a7b7e51 Merge bitcoin-core/secp256k1#1007: doc: Replace apoelstra's GPG key by jonasnick's GPG key
3b157c48ed doc: Suggest keys.openpgp.org as keyserver in SECURITY.md
73a7472cd0 doc: Replace apoelstra's GPG key by jonasnick's GPG key
515a5dbd02 Merge bitcoin-core/secp256k1#991: Merge all "external" benchmarks into a single bench binary
af6abcb3d0 Make bench support selecting which benchmarks to run
9f56bdf5b9 Merge bench_schnorrsig into bench
3208557ae1 Merge bench_recover into bench
855e18d8a8 Merge bench_ecdh into bench
2a7be678a6 Combine bench_sign and bench_verify into single bench
8fa41201bd Merge bitcoin-core/secp256k1#1002: Make aux_rnd32==NULL behave identical to 0x0000..00.
5324f8942d Make aux_rnd32==NULL behave identical to 0x0000..00.
21c188b3c5 Merge bitcoin-core/secp256k1#943: VERIFY_CHECK precondition for secp256k1_fe_set_int.
3e7b2ea194 Merge bitcoin-core/secp256k1#999: bench_ecmult: improve clarity of output
23e2f66726 bench: don't return 1 in have_flag() if argc = 1
96b1ad2ea9 bench_ecmult: improve clarity of output
20d791edfb Merge bitcoin-core/secp256k1#989: Shared benchmark format for command line and CSV outputs
aa1b889b61 Merge bitcoin-core/secp256k1#996: Fix G.y parity in sage code
044d956305 Fix G.y parity in sage code
b4b130678d create csv file from the benchmark output
26a255beb6 Shared benchmark format for command line and CSV outputs
9526874d14 Merge bitcoin-core/secp256k1#810: Avoid overly-wide multiplications in 5x52 field mul/sqr
920a0e5fa6 Merge bitcoin-core/secp256k1#952: Avoid computing out-of-bounds pointer.
f34b5cae03 Merge bitcoin-core/secp256k1#983: [RFC] Remove OpenSSL testing support
297ce82091 Merge bitcoin-core/secp256k1#966: Make aux_rand32 arg to secp256k1_schnorrsig_sign const
2888640132 VERIFY_CHECK precondition for secp256k1_fe_set_int.
d49011f54c Make _set_fe_int( . , 0 ) set magnitude to 0
bc08599e77 Remove OpenSSL testing support
10f9bd84f4 Merge bitcoin-core/secp256k1#987: Fix unused parameter warnings when building without VERIFY
189f6bcfef Fix unused parameter warnings when building without VERIFY
da0092bccc Merge bitcoin-core/secp256k1#986: tests: remove `secp256k1_fe_verify` from tests.c and modify `_fe_from_storage` to call `_fe_verify`
d43993724d tests: remove `secp256k1_fe_verify` from tests.c and modify `secp256k1_fe_from_storage` to call `secp256k1_fe_verify`
2a3a97c665 Merge bitcoin-core/secp256k1#976: `secp256k1_schnorrsig_sign_internal` should be static
aa5d34a8fe Merge bitcoin-core/secp256k1#783: Make the public API docs more consistent and explicit
72713872a8 Add missing static to secp256k1_schnorrsig_sign_internal
db4667d5e0 Make aux_rand32 arg to secp256k1_schnorrsig_sign const
9a5a87e0f1 Merge bitcoin-core/secp256k1#956: Replace ecmult_context with a generated static array.
20abd52c2e Add tests for pre_g tables.
6815761cf5 Remove ecmult_context.
f20dcbbad1 Correct typo.
16a3cc07e8 Generate ecmult_static_pre_g.h
8de2d86a06 Bump memory limits in advance of making the ecmult context static.
d7ec49a689 Merge bitcoin-core/secp256k1#969: ci: Fixes after Debian release
5d5c74a057 tests: Rewrite code to circument potential bug in clang
3d2f492ceb ci: Install libasan6 (instead of 5) after Debian upgrade
adec5a1638 Add missing null check for ctx and input keys in the public API
f4edfc7581 Improve consistency for NULL arguments in the public interface
9be7b0f083 Avoid computing out-of-bounds pointer.
b53e0cd61f Avoid overly-wide multiplications

git-subtree-dir: src/secp256k1
git-subtree-split: 0559fc6e41b65af6e52c32eb9b1286494412a162

1 files changed, 83 insertions, 0 deletions

diff --git a/src/gen_ecmult_gen_static_prec_table.c b/src/gen_ecmult_gen_static_prec_table.c
new file mode 100644
index 0000000000..22923df313
--- /dev/null
+++ b/src/gen_ecmult_gen_static_prec_table.c
@@ -0,0 +1,83 @@
+/***********************************************************************
+ * Copyright (c) 2013, 2014, 2015 Thomas Daede, Cory Fields            *
+ * Distributed under the MIT software license, see the accompanying    *
+ * file COPYING or https://www.opensource.org/licenses/mit-license.php.*
+ ***********************************************************************/
+
+#include <inttypes.h>
+#include <stdio.h>
+
+#include "../include/secp256k1.h"
+#include "assumptions.h"
+#include "util.h"
+#include "group.h"
+#include "ecmult_gen.h"
+#include "ecmult_gen_prec_impl.h"
+
+int main(int argc, char **argv) {
+    const char outfile[] = "src/ecmult_gen_static_prec_table.h";
+    FILE* fp;
+    int bits;
+
+    (void)argc;
+    (void)argv;
+
+    fp = fopen(outfile, "w");
+    if (fp == NULL) {
+        fprintf(stderr, "Could not open %s for writing!\n", outfile);
+        return -1;
+    }
+
+    fprintf(fp, "/* This file was automatically generated by gen_ecmult_gen_static_prec_table. */\n");
+    fprintf(fp, "/* See ecmult_gen_impl.h for details about the contents of this file. */\n");
+    fprintf(fp, "#ifndef SECP256K1_ECMULT_GEN_STATIC_PREC_TABLE_H\n");
+    fprintf(fp, "#define SECP256K1_ECMULT_GEN_STATIC_PREC_TABLE_H\n");
+
+    fprintf(fp, "#include \"group.h\"\n");
+
+    fprintf(fp, "#define S(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) "
+            "SECP256K1_GE_STORAGE_CONST(0x##a##u,0x##b##u,0x##c##u,0x##d##u,0x##e##u,0x##f##u,0x##g##u,"
+            "0x##h##u,0x##i##u,0x##j##u,0x##k##u,0x##l##u,0x##m##u,0x##n##u,0x##o##u,0x##p##u)\n");
+
+    fprintf(fp, "#ifdef EXHAUSTIVE_TEST_ORDER\n");
+    fprintf(fp, "static secp256k1_ge_storage secp256k1_ecmult_gen_prec_table[ECMULT_GEN_PREC_N(ECMULT_GEN_PREC_BITS)][ECMULT_GEN_PREC_G(ECMULT_GEN_PREC_BITS)];\n");
+    fprintf(fp, "#else\n");
+    fprintf(fp, "static const secp256k1_ge_storage secp256k1_ecmult_gen_prec_table[ECMULT_GEN_PREC_N(ECMULT_GEN_PREC_BITS)][ECMULT_GEN_PREC_G(ECMULT_GEN_PREC_BITS)] = {\n");
+
+    for (bits = 2; bits <= 8; bits *= 2) {
+        int g = ECMULT_GEN_PREC_G(bits);
+        int n = ECMULT_GEN_PREC_N(bits);
+        int inner, outer;
+
+        secp256k1_ge_storage* table = checked_malloc(&default_error_callback, n * g * sizeof(secp256k1_ge_storage));
+        secp256k1_ecmult_gen_create_prec_table(table, &secp256k1_ge_const_g, bits);
+
+        fprintf(fp, "#if ECMULT_GEN_PREC_BITS == %d\n", bits);
+        for(outer = 0; outer != n; outer++) {
+            fprintf(fp,"{");
+            for(inner = 0; inner != g; inner++) {
+                fprintf(fp, "S(%"PRIx32",%"PRIx32",%"PRIx32",%"PRIx32",%"PRIx32",%"PRIx32",%"PRIx32",%"PRIx32
+                            ",%"PRIx32",%"PRIx32",%"PRIx32",%"PRIx32",%"PRIx32",%"PRIx32",%"PRIx32",%"PRIx32")",
+                        SECP256K1_GE_STORAGE_CONST_GET(table[outer * g + inner]));
+                if (inner != g - 1) {
+                    fprintf(fp,",\n");
+                } 
+            }
+            if (outer != n - 1) {
+                fprintf(fp,"},\n");
+            } else {
+                fprintf(fp,"}\n");
+            }
+        }
+        fprintf(fp, "#endif\n");
+        free(table);
+    }
+
+    fprintf(fp, "};\n");
+    fprintf(fp, "#endif /* EXHAUSTIVE_TEST_ORDER */\n");
+    fprintf(fp, "#undef SC\n");
+    fprintf(fp, "#endif /* SECP256K1_ECMULT_GEN_STATIC_PREC_TABLE_H */\n");
+    fclose(fp);
+
+    return 0;
+}