bls for eth with compiled static library

This repository contains compiled static library of https://github.com/herumi/bls with BLS_ETH=1.

• SecretKey; Fr
• PublicKey; G1
• Sign; G2

News

• 2023/Aug/17 The performance of Sign is a little improved.
• 2023/Jun/12 move static libraries to release branch
• 2021/Jan/28 (change specification) enable VerifySignatureOrder and VerifyPublicKeyOrder by default
• 2021/Jan/28 (change specification) verify returns false for zero public key
• 2021/Jan/02 support arm64 golang on M1 mac
• 2020/Oct/15 add SecretKey::GetSafePublicKey(), which returns an error if sec is zero
• 2020/Oct/08 MultiVerify returns true only if all signatures are valid.
• 2020/Sep/18 static binary for x64 is JIT-less mode, which uses code pre-generated by Xbyak.
• 2020/Jul/03 remove old tests and use the latest hash function defined at draft-07 is set by default.
• 2020/May/22 SignHashWithDomain, VerifyHashWithDomain, VerifyAggregateHashWithDomain are removed.
• 2020/May/15 EthModeDraft07 is added for draft-07.
• 2020/Apr/20 EthModeDraft06 is default. Call SetETHmode(EthModeDraft05) to use older evrsion.
• 2020/Mar/26 The signature value in SetETHmode(2) has changed because of changing DST in hash-to-curve function.
• 2020/Mar/17 This library supports eth2.0 functions. But the spec of hash-to-curve function may be changed.

Init as the followings:

Init(BLS12_381)

then, you can use the following functions.

bls-eth-go-binary	eth2.0 spec name
SecretKey::SignByte	Sign
PublicKey::VerifyByte	Verify
Sign::Aggregate	Aggregate
Sign::FastAggregateVerify	FastAggregateVerify
Sign::AggregateVerifyNoCheck	AggregateVerify

The size of message must be 32 byte.

Check functions:

• VerifySignatureOrder ; make deserialize check the correctness of the order
• Sign::IsValidOrder ; check the correctness of the order
• VerifyPublicKeyOrder ; make deserialize check the correctness of the order
• PublicKey::IsValidOrder ; check the correctness of the order
• AreAllMsgDifferent ; check that all messages are different each other

How to run examples/sample.go

go get github.com/herumi/bls-eth-go-binary/
go run examples/sample.go

How to build the static binary

The following steps are not necessary if you use compiled binary in this repository.

git clone --recursive https://github.com/herumi/bls-go-binary
cd bls-go-binary
#git submodule update --init --recursive
go test ./bls -bench "Pairing|Sign|Verify" -count=1

Linux, Mac, Windows(mingw64)

On x64 Linux,

make

Otherwise, clang is necessary to build ll files.

make CXX=clang++

Cross compile on macOS

make ARCH=x86_64 # for Intel mac
make ARCH=arm64  # for M1 mac

Cross compile of aarch64 on x64 Linux

sudo apt-get install gcc-multilib
make -C src/bls -f Makefile.onelib build_aarch64 CXX=clang++ -j OUT_DIR=../..

Android

make android

If you need a shared library, then after make clean,

make android BLS_LIB_SHARED=1

iOS

make ios

How to cross-compile for armeabi-v7a

Check llc --version shows to support the target armv7a.

make ../mcl/src/base32.ll
env CXX=clang++ BIT=32 ARCH=arm _OS=android _ARCH=armeabi-v7a make MCL_USE_GMP=0 UNIT=4 CFLAGS_USER="-target armv7a-linux-eabi -fPIC"

• Remark : clang++ must support armv7a-linux-eabi.

How to build sample.go for armeabi-v7a

env CC=arm-linux-gnueabi-gcc CGO_ENABLED=1 GOOS=linux GOARM=7 GOARCH=arm go build examples/sample.go
env QEMU_LD_PREFIX=/usr/arm-linux-gnueabi qemu-arm ./sample

How to cross-compile for mipsel

Check llc --version shows to support the target mips.

make ../mcl/src/base32.ll
env CXX=clang++ BIT=32 ARCH=mipsel _OS=linux _ARCH=mipsle make MCL_USE_GMP=0 UNIT=4 CFLAGS_USER="-target mipsel-linux -fPIC"

• Remark : clang++ must support mipsel-linux.

How to build sample.go for mipsel

env CC=mipsel-linux-gnu-gcc CGO_ENABLED=1 GOOS=linux GOARCH=mipsle GOMIPS=softfloat go build examples/sample.go
env QEMU_LD_PREFIX=/usr/mipsel-linux-gnu qemu-mipsel ./sample

How to use the static library from C

#define BLS_ETH
#include <mcl/bn_c384_256.h>
#include <bls/bls.h>

Author

MITSUNARI Shigeo(herumi@nifty.com)

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