fenc/Encryption/SecureDelete.go

package Encryption

import (
	"os"
)

func SecureDelete(FilePath string) error {
	var (
		file      *os.File
		fileInfo  os.FileInfo
		size      int64
		zeroBytes []byte
		e         error
	)
	file, _ = os.OpenFile(FilePath, os.O_RDWR, 0666)
	defer file.Close()
	// Find out how large is the target file
	fileInfo, e = file.Stat()
	if e != nil {
		return e
	}
	size = fileInfo.Size()
	// Create byte array filled with zero's
	zeroBytes = make([]byte, size)
	_, e = file.Write([]byte(zeroBytes))
	if e != nil {
		return e
	}
	e = os.Remove(FilePath)
	if e != nil {
		return e
	}
	return nil
}