AnsibleVaultError: Decryption failed (no vault secrets were found that could decrypt)

[freeeflyer]

Hi.
I bumped into a weird issue.

Trying to decode a vault encrypted yaml file I get this error:
AnsibleVaultError: Decryption failed (no vault secrets were found that could decrypt)

Versions of installed packages

(I know there is a lot of stuff there)

adm_user@srv-admin ~/selenium-test:\) $ pip list
Package                   Version
------------------------- ----------------
ansible                   9.1.0
ansible-base              2.10.8
ansible-compat            4.1.10
ansible-core              2.16.2
ansible-lint              6.22.1
ansible-modules-pm2       0.1.0
ansible-vault             2.1.0
apache-libcloud           3.2.0
apturl                    0.5.2
argcomplete               1.8.1
asn1crypto                1.4.0
asttokens                 2.4.1
attrs                     23.1.0
ayatana-settings          21.1.28
Babel                     2.8.0
bcrypt                    3.2.0
beautifulsoup4            4.12.2
black                     23.12.1
blessed                   1.20.0
blinker                   1.4
bpython                   0.24
bracex                    2.4
Brlapi                    0.8.3
bs4                       0.0.1
cajarename                21.11.24
certifi                   2022.6.15
chardet                   5.0.0
charset-normalizer        2.1.0
click                     8.0.3
colorama                  0.4.4
colorlog                  6.6.0
configobj                 5.0.6
cryptography              3.4.8
cupshelpers               1.0
curtsies                  0.4.2
cwcwidth                  0.1.9
dbus-python               1.2.18
decorator                 5.1.1
defer                     1.0.6
defusedxml                0.7.1
deja-dup-caja             0.0.9
distro                    1.7.0
distro-info               1.1+ubuntu0.1
dnspython                 2.1.0
duplicity                 0.8.21
exceptiongroup            1.2.0
executing                 2.0.1
fasteners                 0.14.1
filelock                  3.13.1
folder-color-caja         0.0.86
folder-color-common       0.0.86
future                    0.18.2
gpg                       1.16.0
greenlet                  3.0.3
h11                       0.14.0
httplib2                  0.20.2
idna                      3.3
importlib-metadata        4.6.4
ipython                   8.18.1
jedi                      0.19.1
jeepney                   0.7.1
Jinja2                    3.0.3
jmespath                  0.10.0
jsonschema                4.20.0
jsonschema-specifications 2023.12.1
keyring                   23.5.0
language-selector         0.1
launchpadlib              1.10.16
lazr.restfulclient        0.14.4
lazr.uri                  1.0.6
lockfile                  0.12.2
louis                     3.20.0
Magnus                    1.0.3
Mako                      1.1.3
markdown-it-py            3.0.0
MarkupSafe                2.0.1
mate-hud                  22.4.4
mate-menu                 22.4.1
mate-tweak                22.4.8
matplotlib-inline         0.1.6
mdurl                     0.1.2
meld                      3.20.4
monotonic                 1.6
more-itertools            8.10.0
mypy-extensions           1.0.0
netaddr                   0.8.0
netifaces                 0.11.0
ntlm-auth                 1.4.0
oauthlib                  3.2.0
olefile                   0.46
onboard                   1.4.1
outcome                   1.3.0.post0
packaging                 23.2
paramiko                  2.9.3
parso                     0.8.3
pathspec                  0.12.1
pexpect                   4.8.0
Pillow                    9.0.1
pip                       22.0.2
pip-search                0.0.12
platformdirs              4.1.0
prompt-toolkit            3.0.43
psutil                    5.9.0
ptyprocess                0.7.0
pulsemixer                1.5.1
pure-eval                 0.2.2
pyasn1                    0.4.8
pycairo                   1.20.1
pycryptodomex             3.11.0
pycups                    2.0.1
Pygments                  2.17.2
PyGObject                 3.42.1
PyJWT                     2.3.0
pymacaroons               0.13.0
PyNaCl                    1.5.0
pyparsing                 2.4.7
PySocks                   1.7.1
python-apt                2.4.0+ubuntu2
python-dateutil           2.8.1
python-debian             0.1.43+ubuntu1.1
python-dotenv             1.0.0
python-xapp               2.2.1
python-xlib               0.29
pytz                      2022.1
pyvmomi                   6.7.1
pywinrm                   0.3.0
pyxattr                   0.7.2
pyxdg                     0.27
PyYAML                    5.4.1
referencing               0.32.0
reportlab                 3.6.8
requests                  2.31.0
requests-ntlm             1.1.0
requests-toolbelt         0.9.1
resolvelib                1.0.1
rich                      13.7.0
rpds-py                   0.16.2
ruamel.yaml               0.18.5
ruamel.yaml.clib          0.2.8
SecretStorage             3.3.1
selenium                  4.16.0
selinux                   3.3
setproctitle              1.2.2
setuptools                59.6.0
simplejson                3.17.6
six                       1.16.0
sniffio                   1.3.0
sortedcontainers          2.4.0
soupsieve                 2.5
stack-data                0.6.3
stormshield.sns.sslclient 1.0.4
subprocess-tee            0.4.1
systemd-python            234
terminator                2.1.1
tomli                     2.0.1
traitlets                 5.14.0
trio                      0.23.2
trio-websocket            0.11.1
typing_extensions         4.9.0
ubuntu-advantage-tools    8001
ubuntu-drivers-common     0.0.0
ufw                       0.36.1
unattended-upgrades       0.1
urllib3                   1.26.10
wadllib                   1.3.6
wcmatch                   8.5
wcwidth                   0.2.12
webdriver-manager         4.0.1
wheel                     0.37.1
wsproto                   1.2.0
xdg                       5
xkit                      0.0.0
xmltodict                 0.12.0
yamllint                  1.33.0
youtube-dl                2021.12.17
zipp                      1.0.0

Python is 3.10.12

Steps to reproduce

adm_user@srv-admin ~/selenium-test:\) $ cat toto.yml 
soft:
  user: toto
  password: rototo
adm_user@srv-admin ~/selenium-test:\) $ echo -n "toto" > password
adm_user@srv-admin ~/selenium-test:\) $ cat password 
totoadm_user@srv-admin ~/selenium-test:\) $ 
adm_user@srv-admin ~/selenium-test:\) $ ansible-vault encrypt toto.yml --vault-password-file password
Encryption successful
adm_user@srv-admin ~/selenium-test:\) $ cat toto.yml 
$ANSIBLE_VAULT;1.1;AES256
32353335396261646339343466646261306239633333366365663862353062653632653633656162
6464663731366136633131646531303063366332633734370a653464373830666666343930393564
39393162396564356336336339666666383432323738376566626434393461376334656664396339
6461363530383238340a376333306631383762323134303931393938653837633263386664633830
61383664303562386131306234333238396434316636343230633231386138613264383566363432
6165626266626437653735383835663564313162633265643964
adm_user@srv-admin ~/selenium-test:\) $

Now to python:

adm_user@srv-admin ~/selenium-test:\) $ ipython
Python 3.10.12 (main, Nov 20 2023, 15:14:05) [GCC 11.4.0]
Type 'copyright', 'credits' or 'license' for more information
IPython 8.18.1 -- An enhanced Interactive Python. Type '?' for help.

In [1]: from ansible_vault import Vault

In [2]: vault = Vault(open('password').read())

In [3]: data = vault.load(open('toto.yml').read())
---------------------------------------------------------------------------
AnsibleVaultError                         Traceback (most recent call last)
Cell In[3], line 1
----> 1 data = vault.load(open('toto.yml').read())

File ~/.local/lib/python3.10/site-packages/ansible_vault/api.py:53, in Vault.load(self, stream)
     51 def load(self, stream):
     52     """Read vault steam and return python object."""
---> 53     return yaml.safe_load(self.load_raw(stream))

File ~/.local/lib/python3.10/site-packages/ansible_vault/api.py:41, in Vault.load_raw(self, stream)
     39 def load_raw(self, stream):
     40     """Read vault stream and return raw data."""
---> 41     return self.vault.decrypt(stream)

File ~/.local/lib/python3.10/site-packages/ansible_vault/parsing.py:47, in AnsibleVaultLib.decrypt(self, vaulttext)
     46 def decrypt(self, vaulttext):
---> 47     return self.vault.decrypt(vaulttext)

File ~/.local/lib/python3.10/site-packages/ansible/parsing/vault/__init__.py:644, in VaultLib.decrypt(self, vaulttext, filename, obj)
    633 def decrypt(self, vaulttext, filename=None, obj=None):
    634     '''Decrypt a piece of vault encrypted data.
    635 
    636     :arg vaulttext: a string to decrypt.  Since vault encrypted data is an
   (...)
    642 
    643     '''
--> 644     plaintext, vault_id, vault_secret = self.decrypt_and_get_vault_id(vaulttext, filename=filename, obj=obj)
    645     return plaintext

File ~/.local/lib/python3.10/site-packages/ansible/parsing/vault/__init__.py:751, in VaultLib.decrypt_and_get_vault_id(self, vaulttext, filename, obj)
    749     if filename:
    750         msg += " on %s" % to_native(filename)
--> 751     raise AnsibleVaultError(msg)
    753 if b_plaintext is None:
    754     msg = "Decryption failed"

AnsibleVaultError: Decryption failed (no vault secrets were found that could decrypt)

In [4]: