File shredding (secure deletion) algorithm
up vote
2
down vote
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Does anyone see anything wrong with this? I was considering using something like srm or wipe and use os.system to call it from Python code. Should I do that?
My main concern is drives and filesystems that use wear leveling. But even if the program overwrites a portion of the file that should render it useless right? And with the file renamed, there should be no way to tell what the file was.
import random
import os
def wipe(f, passes=30):
if not os.path.isfile(f):
return "Could not find the specified file!"
with open(f, "ba+") as f2w:
size = f2w.tell()
for i in range(passes):
f2w.seek(0)
f2w.write(os.urandom(size))
new_name = str(random.randint(1000,1000000000000))
os.rename(f, new_name)
os.remove(new_name)
return "Success!"
python file file-system
edited 36 mins ago
Jamal♦
30.2k11115226
asked Jan 27 at 13:44
scripter
514
add a comment |
up vote
2
down vote
favorite
Does anyone see anything wrong with this? I was considering using something like srm or wipe and use os.system to call it from Python code. Should I do that?
My main concern is drives and filesystems that use wear leveling. But even if the program overwrites a portion of the file that should render it useless right? And with the file renamed, there should be no way to tell what the file was.
import random
import os
def wipe(f, passes=30):
if not os.path.isfile(f):
return "Could not find the specified file!"
with open(f, "ba+") as f2w:
size = f2w.tell()
for i in range(passes):
f2w.seek(0)
f2w.write(os.urandom(size))
new_name = str(random.randint(1000,1000000000000))
os.rename(f, new_name)
os.remove(new_name)
return "Success!"
python file file-system
edited 36 mins ago
Jamal♦
30.2k11115226
asked Jan 27 at 13:44
scripter
514
add a comment |
up vote
2
down vote
favorite
up vote
2
down vote
favorite
Does anyone see anything wrong with this? I was considering using something like srm or wipe and use os.system to call it from Python code. Should I do that?
My main concern is drives and filesystems that use wear leveling. But even if the program overwrites a portion of the file that should render it useless right? And with the file renamed, there should be no way to tell what the file was.
import random
import os
def wipe(f, passes=30):
if not os.path.isfile(f):
return "Could not find the specified file!"
with open(f, "ba+") as f2w:
size = f2w.tell()
for i in range(passes):
f2w.seek(0)
f2w.write(os.urandom(size))
new_name = str(random.randint(1000,1000000000000))
os.rename(f, new_name)
os.remove(new_name)
return "Success!"
python file file-system
edited 36 mins ago
Jamal♦
30.2k11115226
asked Jan 27 at 13:44
scripter
514
Does anyone see anything wrong with this? I was considering using something like srm or wipe and use os.system to call it from Python code. Should I do that?
My main concern is drives and filesystems that use wear leveling. But even if the program overwrites a portion of the file that should render it useless right? And with the file renamed, there should be no way to tell what the file was.
import random
import os
def wipe(f, passes=30):
if not os.path.isfile(f):
return "Could not find the specified file!"
with open(f, "ba+") as f2w:
size = f2w.tell()
for i in range(passes):
f2w.seek(0)
f2w.write(os.urandom(size))
new_name = str(random.randint(1000,1000000000000))
os.rename(f, new_name)
os.remove(new_name)
return "Success!"
python file file-system
python file file-system
edited 36 mins ago
Jamal♦
30.2k11115226
asked Jan 27 at 13:44
scripter
514
edited 36 mins ago
Jamal♦
30.2k11115226
asked Jan 27 at 13:44
scripter
514
edited 36 mins ago
Jamal♦
30.2k11115226
edited 36 mins ago
Jamal♦
30.2k11115226
edited 36 mins ago
Jamal♦
30.2k11115226
30.2k11115226
asked Jan 27 at 13:44
scripter
514
asked Jan 27 at 13:44
scripter
514
asked Jan 27 at 13:44
scripter
514
514
add a comment |
add a comment |
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