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community.crypto.openssl_signature – Sign data with openssl

Note

This plugin is part of the community.crypto collection (version 1.9.8).

You might already have this collection installed if you are using the ansible package. It is not included in ansible-core. To check whether it is installed, run ansible-galaxy collection list.

To install it, use: ansible-galaxy collection install community.crypto.

To use it in a playbook, specify: community.crypto.openssl_signature.

New in version 1.1.0: of community.crypto

Synopsis

• This module allows one to sign data using a private key.

• The module can use the cryptography Python library, or the pyOpenSSL Python library. By default, it tries to detect which one is available. This can be overridden with the select_crypto_backend option. Please note that the PyOpenSSL backend was deprecated in Ansible 2.9 and will be removed in community.crypto 2.0.0.

Requirements

The below requirements are needed on the host that executes this module.

• Either cryptography >= 1.4 (some key types require newer versions)

• Or pyOpenSSL >= 0.11 (Ed25519 and Ed448 keys are not supported with this backend)

Parameters

Parameter	Comments
path path / required	The file to sign. This file will only be read and not modified.
privatekey_content string	The content of the private key to use when signing the certificate signing request. Either privatekey_path or privatekey_content must be specified, but not both.
privatekey_passphrase string	The passphrase for the private key. This is required if the private key is password protected.
privatekey_path path	The path to the private key to use when signing. Either privatekey_path or privatekey_content must be specified, but not both.
select_crypto_backend string	Determines which crypto backend to use. The default choice is auto, which tries to use cryptography if available, and falls back to pyopenssl. If set to pyopenssl, will try to use the pyOpenSSL library. If set to cryptography, will try to use the cryptography library. Choices: auto ← (default) cryptography pyopenssl

Notes

Note

• When using the cryptography backend, the following key types require at least the following cryptography version: RSA keys: cryptography >= 1.4 DSA and ECDSA keys: cryptography >= 1.5 ed448 and ed25519 keys: cryptography >= 2.6

See Also

See also

community.crypto.openssl_signature_info

The official documentation on the community.crypto.openssl_signature_info module.

community.crypto.openssl_privatekey

The official documentation on the community.crypto.openssl_privatekey module.

Examples

- name: Sign example file
  community.crypto.openssl_signature:
    privatekey_path: private.key
    path: /tmp/example_file
  register: sig

- name: Verify signature of example file
  community.crypto.openssl_signature_info:
    certificate_path: cert.pem
    path: /tmp/example_file
    signature: "{{ sig.signature }}"
  register: verify

- name: Make sure the signature is valid
  assert:
    that:
      - verify.valid

Return Values

Common return values are documented here, the following are the fields unique to this module:

Key	Description
signature string	Base64 encoded signature. Returned: success

Authors

• Patrick Pichler (@aveexy)

• Markus Teufelberger (@MarkusTeufelberger)