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.
From Supranational