consensys / jblst

jblst

Java wrapper around Blst BLS native library from Supranational

Dependency

repositories {
  maven { url "https://artifacts.consensys.net/public/maven/maven/" }
}
dependencies {
  dependency "tech.pegasys:jblst:<version>"
}

Minimal sample

// Load native library for current platform
JBlst.loadNativeLibrary();
    
// Generating new private key
scalar sk = new scalar();
blst.keygen(sk, new byte[] {11}, null);

Supported platforms

• x86-64
  • Windows
  • Linux
  • MacOS
• aarch64
  • Linux
  • MacOS

jblst's Issues

Update to Blst v0.3.8

From Supranational

We recently added a couple new functions to blst that were requested by the community. One feature is EIP-2333 key derivation, and the other is a legacy version of KeyGen from a previous version of the BLS spec. The legacy KeyGen feature was added because the Chia protocol shipped their blockchain using a previous version of the BLS spec. They requested we add this as they are hoping to be able to leverage this library: https://github.com/ConsenSys/web3signer. This library uses jblst under the hood I believe so it would be appreciated if you could update jblst to the most recent release of blst (v0.3.8) at your convenience.

Performance issue in BLS.aggregate method for v 0.3.3-1

See details in:
supranational/blst#66

Add support for Apple M1 arch

Would be nice to add a build for arm64v8/libjblst.dylib for M1 powered MacOS

Use portable build and remove optimized builds

As of v0.3.11, blst's portable build supports CPU runtime detection and will automatically use optimized code (ADX, SHA extensions, and ARM crypto extensions) if supported. For simplicity, I think we should only provide the portable build.

Update to Blst v0.3.5

There's a new official release from Blst: https://github.com/supranational/blst/releases/tag/v0.3.5

Not urgent, since our current version (98044ad) is only a couple of weeks behind this release and there look to be no relevant commits in the mean time. However, it would be good to be on an officially released version.

32 bit distribution

Consider adding Linux arm 32 bit distribution which can be utilised on Raspbian OS 32 bit (Raspberry Pi). The portable version can be compiled on Raspbian OS (32 bit).

https://gist.github.com/usmansaleem/650813a81c41298e6b6f45137ef133cd

Error in loading JBlst (Android)

UsingJBlst.loadNativeLibrary(); shows cannot resolve symbol Jblst.

Trying to use jblst in my Android app. I took the dependency from & added it to app level build.gradlel file.

Without loading the native library, following error comes up -

 java.lang.UnsatisfiedLinkError: No implementation found for long tech.pegasys.teku.bls.impl.blst.swig.blstJNI.new_scalar() (tried Java_tech_pegasys_teku_bls_impl_blst_swig_blstJNI_new_1scalar and Java_tech_pegasys_teku_bls_impl_blst_swig_blstJNI_new_1scalar__)
at tech.pegasys.teku.bls.impl.blst.swig.blstJNI.new_scalar(Native Method)