func shufflePartsMetadata(partsMetadata []FileInfo, distribution []int) []FileInfo {
	return shuffleWithDist[FileInfo](partsMetadata, distribution)
}

// shuffleCheckParts - shuffle CheckParts slice depending on the
// erasure distribution.
func shuffleCheckParts(parts []int, distribution []int) []int {
	return shuffleWithDist[int](parts, distribution)
}

		return errors.New("public key authority validation requested but no ca public key specified.")
	}

	cert, ok := clientKey.(*ssh.Certificate)
	if !ok {
		return errSftpPublicKeyWithoutCert
	}

	// ssh.CheckCert called by ssh.Authenticate accepts certificates
	// with empty principles list so we block those in here.
	if len(cert.ValidPrincipals) == 0 {
		return errSftpCertWithoutPrincipals
	}