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

• 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.

• SetETHmode(EthModeDraft05) supports draft-irtf-cfrg-hash-to-curve-05, which will be removed in the near future.
• SetETHmode(EthModeFraft06) supports draft-irtf-cfrg-hash-to-curve-06 at March 2020. But it has not yet fully tested.

Init as the followings:

Init(BLS12_381)
SetETHmode(1) // or SetETHmode(2)

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 library

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

Linux, Mac, Windows(mingw64)

mkdir work
cd work
git clone https://github.com/herumi/mcl
git clone https://github.com/herumi/bls
git clone https://github.com/herumi/bls-eth-go-binary
cd bls-eth-go-binary
make CXX=clang++

clang generates better binary than gcc.

Android

make android

iOS

make ios

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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