Decouple Spam Functionality from CLI into Throughput Package (#1636)

auth/consts.go

@@ -11,6 +11,10 @@ const (
 	ED25519ID   uint8 = 0
 	SECP256R1ID uint8 = 1
 	BLSID       uint8 = 2
+
+	ED25519Key   = "ed25519"
+	Secp256r1Key = "secp256r1"
+	BLSKey       = "bls"
 )
 
 func Engines() map[uint8]vm.AuthEngine {

auth/utils.go

@@ -0,0 +1,44 @@
+// Copyright (C) 2024, Ava Labs, Inc. All rights reserved.
+// See the file LICENSE for licensing terms.
+
+package auth
+
+import (
+	"errors"
+
+	"github.com/ava-labs/hypersdk/chain"
+	"github.com/ava-labs/hypersdk/codec"
+	"github.com/ava-labs/hypersdk/crypto/bls"
+	"github.com/ava-labs/hypersdk/crypto/ed25519"
+	"github.com/ava-labs/hypersdk/crypto/secp256r1"
+)
+
+var ErrInvalidKeyType = errors.New("invalid key type")
+
+// Used for testing & CLI purposes
+type PrivateKey struct {
+	Address codec.Address
+	// Bytes is the raw private key bytes
+	Bytes []byte
+}
+
+// GetFactory returns the [chain.AuthFactory] for a given private key.
+//
+// A [chain.AuthFactory] signs transactions and provides a unit estimate
+// for using a given private key (needed to estimate fees for a transaction).
+func GetFactory(pk *PrivateKey) (chain.AuthFactory, error) {
+	switch pk.Address[0] {
+	case ED25519ID:
+		return NewED25519Factory(ed25519.PrivateKey(pk.Bytes)), nil
+	case SECP256R1ID:
+		return NewSECP256R1Factory(secp256r1.PrivateKey(pk.Bytes)), nil
+	case BLSID:
+		p, err := bls.PrivateKeyFromBytes(pk.Bytes)
+		if err != nil {
+			return nil, err
+		}
+		return NewBLSFactory(p), nil
+	default:
+		return nil, ErrInvalidKeyType
+	}
+}