package forge

import (
	"crypto/ed25519"
	"encoding/hex"
	"fmt"
)

// ParsePublicKeyHex decodes a hex-encoded ed25519 public key.
func ParsePublicKeyHex(hexKey string) (ed25519.PublicKey, error) {
	raw, err := hex.DecodeString(hexKey)
	if err != nil {
		return nil, fmt.Errorf("decode pubkey: %w", err)
	}
	if len(raw) != ed25519.PublicKeySize {
		return nil, fmt.Errorf("invalid pubkey size %d", len(raw))
	}
	return ed25519.PublicKey(raw), nil
}