Install:

pip install SecureBytes

Use:

Currently supports clearing integers, strings and bytes

from SecureBytes import clearmem, safemem

x = b'data that must be removed'

copy_of_x = x

clearmem(x)

assert(b'data' not in copy_of_x)

In python3 only, temporarily overriding mem allocator to zero ram and prevent paging:

with safemem():
    x = b'data that must be removed'
    del x

# x is not in ram

Currently, safemem and scanmem aren't supported on all pythons and platforms, use import safemem_supported, scanmem_supported to check.

Warnings:

• Do not try to derive from str or bytes... extra copies of your data will be made
• Clearing strings and bytes also clears all references to them
• If you choose store sensitive material in a class, and put clearmem in del, it will only be cleared when the last reference is freed
• "safemem" is not yet efficient (TODO), and it only prevents swapping on Windows (TODO)