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c-kzg-4844
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Merge pull request #16 from ethereum/configure_blob_size 

Make FIELD_ELEMENTS_PER_BLOB compile-time configurable
This commit is contained in:
Ramana Kumar 2022-12-06 12:48:40 +00:00 committed by GitHub
parent 7b3477c6e9 4a9a72bfbe
commit 78bf846f69
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
10 changed files with 100 additions and 19 deletions
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4
bindings/csharp/Makefile
View File

@ -1,5 +1,7 @@
INCLUDE_DIRS = ../../src ../../blst/bindings
FIELD_ELEMENTS_PER_BLOB ?= 4096
ifeq ($(OS),Windows_NT)
BLST_BUILDSCRIPT=./build.bat
BLST_OBJ=blst.lib
@ -20,6 +22,8 @@ else
CKZG_LIBRARY_PATH=Ckzg.Bindings/runtimes/$(CSHARP_PLATFORM)/native/ckzg.so
endif
CLANG_FLAGS += -DFIELD_ELEMENTS_PER_BLOB=$(FIELD_ELEMENTS_PER_BLOB)
TARGETS=ckzg.c ../../src/c_kzg_4844.c ../../blst/$(BLST_OBJ)
.blst:

4
bindings/java/Makefile
View File

@ -2,6 +2,8 @@ INCLUDE_DIRS = ../../src ../../blst/bindings
LIBRARY_FOLDER=src/main/resources/ethereum/ckzg4844/lib
FIELD_ELEMENTS_PER_BLOB ?= 4096
CC_FLAGS=
ifeq ($(OS),Windows_NT)
@ -40,7 +42,7 @@ all: build test
build:
mkdir -p ${LIBRARY_FOLDER}/${OS_ARCH}
${CLANG_EXECUTABLE} ${CC_FLAGS} ${CLANG_FLAGS} -O -Wall ${addprefix -I,${INCLUDE_DIRS}} -I"${JAVA_HOME}/include" -I"${JAVA_HOME}/include/${JNI_INCLUDE_FOLDER}" -o ${LIBRARY_FOLDER}/${OS_ARCH}/${LIBRARY_RESOURCE} c_kzg_4844_jni.c c_kzg_4844.o ../../lib/libblst.a
${CLANG_EXECUTABLE} ${CC_FLAGS} ${CLANG_FLAGS} -O -Wall ${addprefix -I,${INCLUDE_DIRS}} -I"${JAVA_HOME}/include" -I"${JAVA_HOME}/include/${JNI_INCLUDE_FOLDER}" -DFIELD_ELEMENTS_PER_BLOB=${FIELD_ELEMENTS_PER_BLOB} -o ${LIBRARY_FOLDER}/${OS_ARCH}/${LIBRARY_RESOURCE} c_kzg_4844_jni.c c_kzg_4844.o ../../lib/libblst.a
test:
${GRADLE_COMMAND} clean test

3
bindings/node.js/binding.dist.gyp
View File

@ -8,7 +8,8 @@
"CLANG_CXX_LIBRARY": "libc++",
"MACOSX_DEPLOYMENT_TARGET": "13.0"
},
"defines": ["NAPI_DISABLE_CPP_EXCEPTIONS"],
"defines": ["NAPI_DISABLE_CPP_EXCEPTIONS",
"FIELD_ELEMENTS_PER_BLOB=<!(echo ${FIELD_ELEMENTS_PER_BLOB:-4096})"],
"sources": ["kzg.cxx"],
"include_dirs": [
"<(module_root_dir)/dist/deps/blst/bindings",

3
bindings/node.js/binding.gyp
View File

@ -8,7 +8,8 @@
"CLANG_CXX_LIBRARY": "libc++",
"MACOSX_DEPLOYMENT_TARGET": "13.0"
},
"defines": ["NAPI_DISABLE_CPP_EXCEPTIONS"],
"defines": ["NAPI_DISABLE_CPP_EXCEPTIONS",
"FIELD_ELEMENTS_PER_BLOB=<!(echo ${FIELD_ELEMENTS_PER_BLOB:-4096})"],
"sources": ["kzg.cxx"],
"include_dirs": [
"../../inc",

4
bindings/python/Makefile
View File

@ -1,6 +1,8 @@
INCLUDE_DIRS = .. ../../src ../../inc
INCLUDE_PY = $(shell python -c 'import sysconfig; print(sysconfig.get_config_var("INCLUDEPY"))')
FIELD_ELEMENTS_PER_BLOB?=4096
.PHONY: all
all: test ecc_test
@ -12,4 +14,4 @@ ecc_test: py_ecc_tests.py ckzg.so
python $<
ckzg.so: ckzg.c ../../src/c_kzg_4844.o ../../lib/libblst.a
clang -O -Wall -shared -fPIC -Wl,-Bsymbolic -I${INCLUDE_PY} ${addprefix -I,${INCLUDE_DIRS}} -o $@ $^
clang -O -Wall -shared -fPIC -Wl,-Bsymbolic -I${INCLUDE_PY} ${addprefix -I,${INCLUDE_DIRS}} -DFIELD_ELEMENTS_PER_BLOB=${FIELD_ELEMENTS_PER_BLOB} -o $@ $^

16
bindings/python/ckzg.c
View File

@ -39,8 +39,8 @@ static PyObject* blob_to_kzg_commitment_wrap(PyObject *self, PyObject *args) {
!PyCapsule_IsValid(s, "KZGSettings"))
return PyErr_Format(PyExc_ValueError, "expected bytes and trusted setup");
if (PyBytes_Size(b) != 32 * 4096)
return PyErr_Format(PyExc_ValueError, "expected 32 * 4096 bytes");
if (PyBytes_Size(b) != 32 * FIELD_ELEMENTS_PER_BLOB)
return PyErr_Format(PyExc_ValueError, "expected 32 * FIELD_ELEMENTS_PER_BLOB bytes");
uint8_t* blob = (uint8_t*)PyBytes_AsString(b);
@ -62,9 +62,9 @@ static PyObject* compute_aggregate_kzg_proof_wrap(PyObject *self, PyObject *args
return PyErr_Format(PyExc_ValueError, "expected bytes, trusted setup");
Py_ssize_t n = PyBytes_Size(b);
if (n % (32 * 4096) != 0)
return PyErr_Format(PyExc_ValueError, "expected a multiple of 32 * 4096 bytes");
n = n / 32 / 4096;
if (n % (32 * FIELD_ELEMENTS_PER_BLOB) != 0)
return PyErr_Format(PyExc_ValueError, "expected a multiple of 32 * FIELD_ELEMENTS_PER_BLOB bytes");
n = n / 32 / FIELD_ELEMENTS_PER_BLOB;
Blob* blobs = (Blob*)PyBytes_AsString(b);
@ -95,9 +95,9 @@ static PyObject* verify_aggregate_kzg_proof_wrap(PyObject *self, PyObject *args)
"expected bytes, sequence, proof, trusted setup");
Py_ssize_t n = PyBytes_Size(b);
if (n % (32 * 4096) != 0)
return PyErr_Format(PyExc_ValueError, "expected a multiple of 32 * 4096 bytes");
n = n / 32 / 4096;
if (n % (32 * FIELD_ELEMENTS_PER_BLOB) != 0)
return PyErr_Format(PyExc_ValueError, "expected a multiple of 32 * FIELD_ELEMENTS_PER_BLOB bytes");
n = n / 32 / FIELD_ELEMENTS_PER_BLOB;
if (PySequence_Length(c) != n)
return PyErr_Format(PyExc_ValueError, "expected same number of commitments as polynomials");

4
src/Makefile
View File

@ -8,11 +8,13 @@ endif
CLANG_EXECUTABLE=clang
BLST_BUILD_SCRIPT=./build.sh
FIELD_ELEMENTS_PER_BLOB?=4096
all: c_kzg_4844.o lib
# If you change FIELD_ELEMENTS_PER_BLOB, remember to rm c_kzg_4844.o and make again
c_kzg_4844.o: c_kzg_4844.c Makefile
${CLANG_EXECUTABLE} -Wall -I$(INCLUDE_DIRS) $(CFLAGS) -c $<
${CLANG_EXECUTABLE} -Wall -I$(INCLUDE_DIRS) -DFIELD_ELEMENTS_PER_BLOB=$(FIELD_ELEMENTS_PER_BLOB) $(CFLAGS) -c $<
# Will fail with "patch does not apply" if it has already been patched.
# Safe to ignore.

5
src/c_kzg_4844.c
View File

@ -801,9 +801,8 @@ C_KZG_RET load_trusted_setup(KZGSettings *out, FILE *in) {
blst_p2_from_affine(&out->g2_values[i], &g2_affine);
}
unsigned int max_scale = 12;
// no-op
// while (((uint64_t)1 << max_scale) < FIELD_ELEMENTS_PER_BLOB) max_scale++;
unsigned int max_scale = 0;
while (((uint64_t)1 << max_scale) < FIELD_ELEMENTS_PER_BLOB) max_scale++;
out->fs = (FFTSettings*)malloc(sizeof(FFTSettings));

1
src/c_kzg_4844.h
View File

@ -36,7 +36,6 @@ extern "C" {
#define BYTES_PER_COMMITMENT 48
#define BYTES_PER_PROOF 48
#define FIELD_ELEMENTS_PER_BLOB 4096
#define BYTES_PER_FIELD_ELEMENT 32
#define BYTES_PER_BLOB FIELD_ELEMENTS_PER_BLOB * BYTES_PER_FIELD_ELEMENT
static const uint8_t FIAT_SHAMIR_PROTOCOL_DOMAIN[] = {70, 83, 66, 76, 79, 66, 86, 69, 82, 73, 70, 89, 95, 86, 49, 95}; // "FSBLOBVERIFY_V1_"

71
src/trusted_setup_4.txt Normal file
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@ -0,0 +1,71 @@
4
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