Is there exists a working shards for generate ECDSA key pairs, generate public key from private key

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Hi, @stakach , let me describe my demand, please give me some clue if this is possible when use with openssl_ext shards.

  1. The first step, i generate some mnemonics, like this: [“measure”, “come”, “cube”, “ostrich”, “wide”, “inspire”, “hello”, “essay”, “ready”, “cute”, “reform”, “sustain”], use can writ e it somewhere, which can be used to restore a hex string like this:
m1 = Bip0039::Mnemonic.new ["measure", "come", "cube", "ostrich", "wide", "inspire", "hello", "essay", "ready", "cute", "reform", "sustain"]
# => <Bip0039::Mnemonic:0x7f37ca6e4c80 @ent=128, @seed=183297182565288719506055787609377395053>
m1.to_hex
# => "89e5c0d5ce7faaea9ab269b2c6d6d16d"

I use bip39 shard for this, it works.

  1. Then i need use above hex string, 89e5c0d5ce7faaea9ab269b2c6d6d16d, or the array of mnemonics, to generate a pair of key, i am blocked on there.

When use go, those code like this:

import (
	"bytes"
	"crypto/ecdsa"
	"crypto/elliptic"
	"github.com/tyler-smith/go-bip39"
)

	seed, err := bip39.NewSeedWithErrorChecking(mnemonic, "password")
	if err != nil {
		return
	}
	return ecdsa.GenerateKey(elliptic.P256(), bytes.NewBuffer(seed))

Thank you.