names, continueAt, err := c.client.ListKeys(ctx, req.Prefix, req.Limit)
	if err != nil {
		return nil, "", err
	}
	keyInfos := make([]madmin.KMSKeyInfo, len(names))
	for i := range names {
		keyInfos[i].Name = names[i]
	}
	return keyInfos, continueAt, nil
}

// CreateKey tries to create a new key at the KMS with the
// given key ID.
//