Update secp256k1 to v0.6.0

Author: joii2020

Makefile

@@ -4,7 +4,6 @@ LD := $(TARGET)-gcc
 OBJCOPY := $(TARGET)-objcopy
 CFLAGS := -fPIC -O3 -fno-builtin-printf -fno-builtin-memcmp -nostdinc -nostdlib -nostartfiles -fvisibility=hidden -fdata-sections -ffunction-sections -I deps/secp256k1/src -I deps/secp256k1 -I deps/ckb-c-std-lib -I deps/ckb-c-std-lib/libc -I deps/ckb-c-std-lib/molecule -I c -I build -Wall -Werror -Wno-nonnull -Wno-nonnull-compare -Wno-unused-function -g
 LDFLAGS := -Wl,-static -fdata-sections -ffunction-sections -Wl,--gc-sections
-SECP256K1_SRC_20210801 := deps/secp256k1-20210801/src/ecmult_static_pre_context.h
 
 
 OMNI_LOCK_CFLAGS :=$(subst ckb-c-std-lib,ckb-c-stdlib-20210801,$(CFLAGS)) -I deps/sparse-merkle-tree/c
@@ -35,18 +34,10 @@ build/always_success: c/always_success.c
 build/secp256k1_data_info_20210801.h: build/dump_secp256k1_data_20210801
 	$<
 
-build/dump_secp256k1_data_20210801: c/dump_secp256k1_data_20210801.c $(SECP256K1_SRC_20210801)
+build/dump_secp256k1_data_20210801: c/dump_secp256k1_data_20210801.c
 	mkdir -p build
 	gcc -I deps/secp256k1-20210801/src -I deps/secp256k1-20210801 -o $@ $<
 
-
-$(SECP256K1_SRC_20210801):
-	cd deps/secp256k1-20210801 && \
-		./autogen.sh && \
-		CC=$(CC) LD=$(LD) ./configure --with-bignum=no --enable-ecmult-static-precomputation --enable-endomorphism --enable-module-recovery --host=$(TARGET) && \
-		make src/ecmult_static_pre_context.h src/ecmult_static_context.h
-
-
 build/impl.o: deps/ckb-c-std-lib/libc/src/impl.c
 	$(CC) -c $(filter-out -DCKB_DECLARATION_ONLY, $(CFLAGS_MBEDTLS)) $(LDFLAGS_MBEDTLS) -o $@ $^
 
@@ -76,7 +67,7 @@ omni_lock_mol:
 	${MOLC} --language - --schema-file c/omni_lock.mol --format json > build/omni_lock_mol2.json
 	moleculec-c2 --input build/omni_lock_mol2.json | clang-format -style=Google > c/omni_lock_mol2.h
 
-build/omni_lock: c/omni_lock.c c/omni_lock_supply.h c/omni_lock_acp.h c/secp256k1_lock.h build/secp256k1_data_info_20210801.h $(SECP256K1_SRC_20210801) c/ckb_identity.h
+build/omni_lock: c/omni_lock.c c/omni_lock_supply.h c/omni_lock_acp.h c/secp256k1_lock.h build/secp256k1_data_info_20210801.h c/ckb_identity.h
 	$(CC) $(OMNI_LOCK_CFLAGS) $(LDFLAGS) -o $@ $<
 	cp $@ $@.debug
 	$(OBJCOPY) --strip-debug --strip-all $@

c/dump_secp256k1_data_20210801.c

@@ -7,20 +7,20 @@
  * directly, the final binary will include all functions rather than those used.
  */
 #define HAVE_CONFIG_H 1
-#include <secp256k1.c>
+#include <precomputed_ecmult.c>
 
 #define ERROR_IO -1
 
 int main(int argc, char* argv[]) {
-  size_t pre_size = sizeof(secp256k1_ecmult_static_pre_context);
-  size_t pre128_size = sizeof(secp256k1_ecmult_static_pre128_context);
+  size_t pre_size = sizeof(secp256k1_pre_g);
+  size_t pre128_size = sizeof(secp256k1_pre_g_128);
 
   FILE* fp_data = fopen("build/secp256k1_data_20210801", "wb");
   if (!fp_data) {
     return ERROR_IO;
   }
-  fwrite(secp256k1_ecmult_static_pre_context, pre_size, 1, fp_data);
-  fwrite(secp256k1_ecmult_static_pre128_context, pre128_size, 1, fp_data);
+  fwrite(secp256k1_pre_g, pre_size, 1, fp_data);
+  fwrite(secp256k1_pre_g_128, pre128_size, 1, fp_data);
   fclose(fp_data);
 
   FILE* fp = fopen("build/secp256k1_data_info_20210801.h", "w");
@@ -37,8 +37,8 @@ int main(int argc, char* argv[]) {
   blake2b_state blake2b_ctx;
   uint8_t hash[32];
   blake2b_init(&blake2b_ctx, 32);
-  blake2b_update(&blake2b_ctx, secp256k1_ecmult_static_pre_context, pre_size);
-  blake2b_update(&blake2b_ctx, secp256k1_ecmult_static_pre128_context,
+  blake2b_update(&blake2b_ctx, secp256k1_pre_g, pre_size);
+  blake2b_update(&blake2b_ctx, secp256k1_pre_g_128,
                  pre128_size);
   blake2b_final(&blake2b_ctx, hash, 32);
 

c/secp256k1_helper_20210801.h

@@ -15,7 +15,16 @@
  */
 #define HAVE_CONFIG_H 1
 #define USE_EXTERNAL_DEFAULT_CALLBACKS
+#define SECP256K1_PRECOMPUTED_ECMULT_H
+#include "group.h"
+#define WINDOW_G ECMULT_WINDOW_SIZE
+secp256k1_ge_storage* secp256k1_pre_g = NULL;
+secp256k1_ge_storage* secp256k1_pre_g_128 = NULL;
+#undef SECP256K1_NO_BUILD
 #include <secp256k1.c>
+#include "modules/recovery/main_impl.h"
+const secp256k1_ge_storage secp256k1_ecmult_gen_prec_table[COMB_BLOCKS]
+                                                          [COMB_POINTS];
 
 void secp256k1_default_illegal_callback_fn(const char* str, void* data) {
   (void)str;
@@ -68,19 +77,14 @@ int ckb_secp256k1_custom_verify_only_initialize(secp256k1_context* context,
     return CKB_SECP256K1_HELPER_ERROR_LOADING_DATA;
   }
 
-  context->illegal_callback = default_illegal_callback;
-  context->error_callback = default_error_callback;
+  secp256k1_pre_g = (secp256k1_ge_storage*)data;
+  secp256k1_pre_g_128 = (secp256k1_ge_storage*)(data + CKB_SECP256K1_DATA_PRE_SIZE);
 
-  secp256k1_ecmult_context_init(&context->ecmult_ctx);
-  secp256k1_ecmult_gen_context_init(&context->ecmult_gen_ctx);
-
-  /* Recasting data to (uint8_t*) for pointer math */
-  uint8_t* p = data;
-  secp256k1_ge_storage(*pre_g)[] = (secp256k1_ge_storage(*)[])p;
-  secp256k1_ge_storage(*pre_g_128)[] =
-      (secp256k1_ge_storage(*)[])(&p[CKB_SECP256K1_DATA_PRE_SIZE]);
-  context->ecmult_ctx.pre_g = pre_g;
-  context->ecmult_ctx.pre_g_128 = pre_g_128;
+  secp256k1_context* ctx = secp256k1_context_preallocated_create(
+      (void*)context, SECP256K1_CONTEXT_VERIFY);
+  if (!ctx) {
+      return CKB_SECP256K1_HELPER_ERROR_LOADING_DATA;
+  }
 
   return 0;
 }

deps/secp256k1-20210801

@@ -15,7 +15,7 @@ const CKB_HASH_PERSONALIZATION: &[u8] = b"ckb-default-hash";
 const BINARIES: &[(&str, &str)] = &[
     (
         "omni_lock",
-        "768f306681da232ceb0b94f436c5f813377179762a831c5ad8797bd4fd2d118d",
+        "4fc2132f040de19a5355004252a0447421299844dc8e215cb7170c4a7174d7c7",
     ),
 ];