Python module to read KeePass 1.x/KeePassX (v3) and KeePass 2.x (v4) files
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libkeepass fix loading old hex, 64 byte keyfiles Nov 3, 2018
samples Kdb4 merge (#29) Nov 3, 2018
LICENSE.txt Include tests in PyPI tarball (#27) Oct 3, 2018
README.rst Kdb4 merge (#29) Nov 3, 2018 Kdb4 merge (#29) Nov 3, 2018
requirements.txt bump version Mar 23, 2018 Fix display of unicode strings in Python 2. Dec 10, 2014



This library is being deprecated soon by pykeepass

Low-level Python (2.7/3.x) module to read KeePass 1.x/KeePassX (.kdb) and KeePass 2.x (.kdbx v3) files.

See pykeepass or kppy for higher level database access and editing.


This code makes no attempt to secure its memory.


KeePass 1.x support

The v3 reader will parse the v3 binary format and put groups into the "groups" attribute, and entries into the "entries" attribute. The special icon entry is parsed and icons can be accessed via the "icons" attribute. Other special entries are not parsed and seen as regular entries.

Only passwords are supported.

No write support.

KeePass 2.x support

(Note: no support for KDBX v4 files)

The v4 reader can output the decrypted XML document that file format is based on. It is also available as parsed objectified element tree.

The password elements in the XML document are protected in addition to the AES encryption of the whole database. Switching between clear text and protected is possible.

Passwords and key-file protection is supported.

Compressed and uncompressed files are supported.

There is basic "save as" write support. When writing the KeePass2 file, the element tree is protected, serialized, compressed and encrypted according to the settings in the file header and written to a stream.

ChaCha20 database encryption is supported. However its worth noting that pycryptodome version 3.6.1 and earlier does not support 12-bytes nonces for ChaCha20, which we require. Future versions of pycryptodome do support 12-byte nonces. So if you're using 3.6.1 or earlier, decrypting a ChaCha20 encrypted database will raise an exception. Decrypting AES and Twofish encrypted databases will work as normal.

Currently the Argon2 key derivation algorithm and ChaCha20 protected passwords are unsupported.

Merging/Synchronizing databases is also supported. Currently only the synchronize and "overwrite if newer" modes are supported.


Currently 3 merge modes are supported:

  • OVERWRITE_IF_NEWER -- Entries are updated if there is a newer one in the KDB being merged with and the previous entry is added to the entry history. No Entry relocations nor deletions are done.
  • SYNCHRONIZE - This mode should be equivalent to the official keepass synchronize, which does and OVERWRITE_IF_NEWER, Entry relocations, and deletions.
  • SYNCHRONIZE_3WAY -- This mode is similar to SYNCHRONIZE, except that corresponding Entries are merged on a per field basis. This is desirable if Entries in both the source and destination merge KDBs have diverged from their common ancestor.

See samples/ for an example of merging two KDBs in libkeepass. Keep in mind that merging modifies the KDB being merged into. So make a copy if you need the original.


import libkeepass

filename = "input.kdbx"
with, password='secret', keyfile='keyfile.key') as kdb:
    # print parsed element tree as xml

    # re-encrypt the password fields

    # or use kdb.obj_root to access the element tree

    # change the master password before writing

    # disable compression

    # write to a new file
    with open('output', 'wb') as output:

# Alternatively, read a kdb4 file protected
with, password='secret', keyfile='keyfile.key', unprotect=False) as kdb:
    # print parsed element tree as xml

    # decrypt the password fields


Make a virtualenv and install the requirements (or install through pip). Then run the tests script

pip install -r requirements.txt
python ./tests


Brett Viren's code was a starting point and some of his code is being re-used unchanged

For v4 support reading the original Keepass2 C# source was used as inspiration

Keepass 2.x uses Salsa20 to protect data in XML. Currently puresalsa20 is used and included.

For v3 read support, code was copied with some enhancements from WAKAYAMA Shirou's kptool.

Thanks to them and all others who came before are in order.


  • fdemmer
  • phpwutz
  • nvamilichev
  • crass
  • pschmitt
  • evidlo