How is python-keyring implemented on Windows?

问题:

How does python-keyring provide security on Windows?

In GNOME/KDE on Linux, the user is prompted to enter his password to authorize access to the keyring on a per-application basis.

In Windows there is no such prompt when an application accesses the keyring. What is stopping a random python application to retrieve a password from the keyring by running

import keyring
get_password(service, username)

How is user consent implemented? Is the whole concept, atleast in Windows, based on the assumption that all installed programs are 'trusted'?

回答1:

Researching this a bit, it appears that the passwords are stored within a Windows Credential Vault, which is the equivalent of the Gnome or KDE keyrings. You can actually see the ones that you have stored by opening up the Windows Credential Manager. I get there by just typing in Credential Manager on Windows 8.1 from the start screen, but I think you can get to it from the User accounts page as well.

Anyway, as you can see from the attached image, the password that I added to the keyring as a test is displayed under Windows Credentials -> Generic Credentials -> keyring_demo. Opening this window up as another user on the PC does not show this password, so it seems secured from other Users. This screen also allows you to revoke or change passwords.

As to how consent is implemented, I believe keyring will operate as long as your Windows user account is logged in, but I don't know the specifics.

回答2:

the cedential manager method works, but in my case add:

• internet or network addess "myPassGroup"
• username "pass1"
• password "xxx"

then add another entry using the same network address

• internet or netwokr address "myPassGroup"
• username "pass2"
• password "xxx"

the pass2 will OVERRIDE the frist entry pass1! this is a major drewback, as the "internet or network address" is served as a groupname in keyring, I need put mutiple password under the same name

my solution is to use the python command direct

• open CMD in windows
• type Python
• then type import keyring
• then type keyring.set_password("groupName", "passKey" ,"password")
• then type keyring.set_password("groupName", "passKey2" ,"password2")

you can validate the result by

• keying.get_password("groupname", "passKey")
• keying.get_password("groupname", "passKey2")

I konw this will work, but still struggle to find where the actual data is saved

I used the following command try to find out

• python -c "import keyring.util.platform_; print(keyring.util.platform_.config_root())"

• python -c "import keyring.util.platform_; print(keyring.util.platform_.data_root())"

the data_root in my case is "C:\Users\JunchenLiu\AppData\Local\Python Keyring" I checked the folder, it doesn't exists... it must been saved somewhere. maybe someone can figure it out.

but my solution should work prefectly on Windows

回答3:

from keyring.backend import KeyringBackend

class SimpleKeyring(KeyringBackend):
    """Simple Keyring is a keyring which can store only one
    password in memory.
    """
    def __init__(self):
        self.password = ''

    def supported(self):
        return 0

    def get_password(self, service, username):
        return self.password

    def set_password(self, service, username, password):
        self.password = password
        return 0

    def delete_password(self, service, username):
        self.password = None