openssl_publickey: add cryptography backend (#60387)

* Add cryptography backend.

* Add changelog.

* Make sure requirements are satisfied.

* Use more compatible elliptic curve.

* Decrease required version numbers.

* PyOpenSSL >= 16.0.0 is really needed.

* Update lib/ansible/modules/crypto/openssl_publickey.py

Co-Authored-By: MarkusTeufelberger <mteufelberger@mgit.at>

changelogs/fragments/60387-openssl_publickey-cryptography-backend.yml

@@ -0,0 +1,2 @@
+minor_changes:
+- "openssl_publickey - now works with both PyOpenSSL and cryptography Python libraries. Autodetection can be overridden with ``select_crypto_backend`` option."

lib/ansible/modules/crypto/openssl_publickey.py

@@ -18,14 +18,18 @@ version_added: "2.3"
 short_description: Generate an OpenSSL public key from its private key.
 description:
     - This module allows one to (re)generate OpenSSL public keys from their private keys.
-    - It uses the pyOpenSSL python library to interact with openssl.
-    - Keys are generated in PEM format.
-    - This module works only if the version of PyOpenSSL is recent enough (> 16.0.0).
+    - Keys are generated in PEM or OpenSSH format.
+    - 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 I(select_crypto_backend) option. When I(format) is C(OpenSSH),
+      the C(cryptography) backend has to be used."
 requirements:
-    - pyOpenSSL
-    - cryptography (if I(format) is C(OpenSSH))
+    - Either cryptography >= 1.2.3 (older versions might work as well)
+    - Or pyOpenSSL >= 16.0.0
+    - Needs cryptography >= 1.4 if I(format) is C(OpenSSH)
 author:
-- Yanis Guenane (@Spredzy)
+    - Yanis Guenane (@Spredzy)
+    - Felix Fontein (@felixfontein)
 options:
     state:
         description:
@@ -67,6 +71,16 @@ options:
         type: bool
         default: no
         version_added: "2.8"
+    select_crypto_backend:
+        description:
+            - Determines which crypto backend to use.
+            - The default choice is C(auto), which tries to use C(cryptography) if available, and falls back to C(pyopenssl).
+            - If set to C(pyopenssl), will try to use the L(pyOpenSSL,https://pypi.org/project/pyOpenSSL/) library.
+            - If set to C(cryptography), will try to use the L(cryptography,https://cryptography.io/) library.
+        type: str
+        default: auto
+        choices: [ auto, cryptography, pyopenssl ]
+        version_added: "2.9"
 extends_documentation_fragment:
 - files
 seealso:
@@ -146,25 +160,34 @@ backup_file:
 
 import os
 import traceback
+from distutils.version import LooseVersion
+
+MINIMAL_PYOPENSSL_VERSION = '16.0.0'
+MINIMAL_CRYPTOGRAPHY_VERSION = '1.2.3'
+MINIMAL_CRYPTOGRAPHY_VERSION_OPENSSH = '1.4'
 
 PYOPENSSL_IMP_ERR = None
 try:
+    import OpenSSL
     from OpenSSL import crypto
+    PYOPENSSL_VERSION = LooseVersion(OpenSSL.__version__)
 except ImportError:
     PYOPENSSL_IMP_ERR = traceback.format_exc()
-    pyopenssl_found = False
+    PYOPENSSL_FOUND = False
 else:
-    pyopenssl_found = True
+    PYOPENSSL_FOUND = True
 
 CRYPTOGRAPHY_IMP_ERR = None
 try:
+    import cryptography
     from cryptography.hazmat.backends import default_backend
     from cryptography.hazmat.primitives import serialization as crypto_serialization
+    CRYPTOGRAPHY_VERSION = LooseVersion(cryptography.__version__)
 except ImportError:
     CRYPTOGRAPHY_IMP_ERR = traceback.format_exc()
-    cryptography_found = False
+    CRYPTOGRAPHY_FOUND = False
 else:
-    cryptography_found = True
+    CRYPTOGRAPHY_FOUND = True
 
 from ansible.module_utils import crypto as crypto_utils
 from ansible.module_utils._text import to_native, to_bytes
@@ -177,7 +200,7 @@ class PublicKeyError(crypto_utils.OpenSSLObjectError):
 
 class PublicKey(crypto_utils.OpenSSLObject):
 
-    def __init__(self, module):
+    def __init__(self, module, backend):
         super(PublicKey, self).__init__(
             module.params['path'],
             module.params['state'],
@@ -189,10 +212,34 @@ class PublicKey(crypto_utils.OpenSSLObject):
         self.privatekey_passphrase = module.params['privatekey_passphrase']
         self.privatekey = None
         self.fingerprint = {}
+        self.backend = backend
 
         self.backup = module.params['backup']
         self.backup_file = None
 
+    def _create_publickey(self, module):
+        self.privatekey = crypto_utils.load_privatekey(
+            self.privatekey_path,
+            self.privatekey_passphrase,
+            backend=self.backend
+        )
+        if self.backend == 'cryptography':
+            if self.format == 'OpenSSH':
+                return self.privatekey.public_key().public_bytes(
+                    crypto_serialization.Encoding.OpenSSH,
+                    crypto_serialization.PublicFormat.OpenSSH
+                )
+            else:
+                return self.privatekey.public_key().public_bytes(
+                    crypto_serialization.Encoding.PEM,
+                    crypto_serialization.PublicFormat.SubjectPublicKeyInfo
+                )
+        else:
+            try:
+                return crypto.dump_publickey(crypto.FILETYPE_PEM, self.privatekey)
+            except AttributeError as exc:
+                raise PublicKeyError('You need to have PyOpenSSL>=16.0.0 to generate public keys')
+
     def generate(self, module):
         """Generate the public key."""
 
@@ -203,23 +250,7 @@ class PublicKey(crypto_utils.OpenSSLObject):
 
         if not self.check(module, perms_required=False) or self.force:
             try:
-                if self.format == 'OpenSSH':
-                    with open(self.privatekey_path, 'rb') as private_key_fh:
-                        privatekey_content = private_key_fh.read()
-                    key = crypto_serialization.load_pem_private_key(
-                        privatekey_content,
-                        password=None if self.privatekey_passphrase is None else to_bytes(self.privatekey_passphrase),
-                        backend=default_backend()
-                    )
-                    publickey_content = key.public_key().public_bytes(
-                        crypto_serialization.Encoding.OpenSSH,
-                        crypto_serialization.PublicFormat.OpenSSH
-                    )
-                else:
-                    self.privatekey = crypto_utils.load_privatekey(
-                        self.privatekey_path, self.privatekey_passphrase
-                    )
-                    publickey_content = crypto.dump_publickey(crypto.FILETYPE_PEM, self.privatekey)
+                publickey_content = self._create_publickey(module)
 
                 if self.backup:
                     self.backup_file = module.backup_local(self.path)
@@ -230,8 +261,6 @@ class PublicKey(crypto_utils.OpenSSLObject):
                 raise PublicKeyError(exc)
             except (IOError, OSError) as exc:
                 raise PublicKeyError(exc)
-            except AttributeError as exc:
-                raise PublicKeyError('You need to have PyOpenSSL>=16.0.0 to generate public keys')
 
         self.fingerprint = crypto_utils.get_fingerprint(
             self.privatekey_path,
@@ -253,26 +282,34 @@ class PublicKey(crypto_utils.OpenSSLObject):
             try:
                 with open(self.path, 'rb') as public_key_fh:
                     publickey_content = public_key_fh.read()
-                if self.format == 'OpenSSH':
-                    current_publickey = crypto_serialization.load_ssh_public_key(publickey_content, backend=default_backend())
-                    publickey_content = current_publickey.public_bytes(crypto_serialization.Encoding.PEM,
-                                                                       crypto_serialization.PublicFormat.SubjectPublicKeyInfo)
-                current_publickey = crypto.dump_publickey(
-                    crypto.FILETYPE_ASN1,
-                    crypto.load_publickey(crypto.FILETYPE_PEM, publickey_content)
-                )
+                if self.backend == 'cryptography':
+                    if self.format == 'OpenSSH':
+                        # Read and dump public key. Makes sure that the comment is stripped off.
+                        current_publickey = crypto_serialization.load_ssh_public_key(publickey_content, backend=default_backend())
+                        publickey_content = current_publickey.public_bytes(
+                            crypto_serialization.Encoding.OpenSSH,
+                            crypto_serialization.PublicFormat.OpenSSH
+                        )
+                    else:
+                        current_publickey = crypto_serialization.load_pem_public_key(publickey_content, backend=default_backend())
+                        publickey_content = current_publickey.public_bytes(
+                            crypto_serialization.Encoding.PEM,
+                            crypto_serialization.PublicFormat.SubjectPublicKeyInfo
+                        )
+                else:
+                    publickey_content = crypto.dump_publickey(
+                        crypto.FILETYPE_PEM,
+                        crypto.load_publickey(crypto.FILETYPE_PEM, publickey_content)
+                    )
             except Exception as dummy:
                 return False
 
             try:
-                desired_publickey = crypto.dump_publickey(
-                    crypto.FILETYPE_ASN1,
-                    crypto_utils.load_privatekey(self.privatekey_path, self.privatekey_passphrase)
-                )
+                desired_publickey = self._create_publickey(module)
             except crypto_utils.OpenSSLBadPassphraseError as exc:
                 raise PublicKeyError(exc)
 
-            return current_publickey == desired_publickey
+            return publickey_content == desired_publickey
 
         if not state_and_perms:
             return state_and_perms
@@ -311,16 +348,52 @@ def main():
             format=dict(type='str', default='PEM', choices=['OpenSSH', 'PEM']),
             privatekey_passphrase=dict(type='str', no_log=True),
             backup=dict(type='bool', default=False),
+            select_crypto_backend=dict(type='str', choices=['auto', 'pyopenssl', 'cryptography'], default='auto'),
         ),
         supports_check_mode=True,
         add_file_common_args=True,
         required_if=[('state', 'present', ['privatekey_path'])],
     )
 
-    if not pyopenssl_found:
-        module.fail_json(msg=missing_required_lib('pyOpenSSL'), exception=PYOPENSSL_IMP_ERR)
-    if module.params['format'] == 'OpenSSH' and not cryptography_found:
-        module.fail_json(msg=missing_required_lib('cryptography'), exception=CRYPTOGRAPHY_IMP_ERR)
+    minimal_cryptography_version = MINIMAL_CRYPTOGRAPHY_VERSION
+    if module.params['format'] == 'OpenSSH':
+        minimal_cryptography_version = MINIMAL_CRYPTOGRAPHY_VERSION_OPENSSH
+
+    backend = module.params['select_crypto_backend']
+    if backend == 'auto':
+        # Detection what is possible
+        can_use_cryptography = CRYPTOGRAPHY_FOUND and CRYPTOGRAPHY_VERSION >= LooseVersion(minimal_cryptography_version)
+        can_use_pyopenssl = PYOPENSSL_FOUND and PYOPENSSL_VERSION >= LooseVersion(MINIMAL_PYOPENSSL_VERSION)
+
+        # Decision
+        if can_use_cryptography:
+            backend = 'cryptography'
+        elif can_use_pyopenssl:
+            if module.params['format'] == 'OpenSSH':
+                module.fail_json(
+                    msg=missing_required_lib('cryptography >= {0}'.format(MINIMAL_CRYPTOGRAPHY_VERSION_OPENSSH)),
+                    exception=CRYPTOGRAPHY_IMP_ERR
+                )
+            backend = 'pyopenssl'
+
+        # Success?
+        if backend == 'auto':
+            module.fail_json(msg=("Can't detect any of the required Python libraries "
+                                  "cryptography (>= {0}) or PyOpenSSL (>= {1})").format(
+                                      minimal_cryptography_version,
+                                      MINIMAL_PYOPENSSL_VERSION))
+
+    if module.params['format'] == 'OpenSSH' and backend != 'cryptography':
+        module.fail_json(msg="Format OpenSSH requires the cryptography backend.")
+
+    if backend == 'pyopenssl':
+        if not PYOPENSSL_FOUND:
+            module.fail_json(msg=missing_required_lib('pyOpenSSL >= {0}'.format(MINIMAL_PYOPENSSL_VERSION)),
+                             exception=PYOPENSSL_IMP_ERR)
+    elif backend == 'cryptography':
+        if not CRYPTOGRAPHY_FOUND:
+            module.fail_json(msg=missing_required_lib('cryptography >= {0}'.format(minimal_cryptography_version)),
+                             exception=CRYPTOGRAPHY_IMP_ERR)
 
     base_dir = os.path.dirname(module.params['path']) or '.'
     if not os.path.isdir(base_dir):
@@ -330,7 +403,7 @@ def main():
         )
 
     try:
-        public_key = PublicKey(module)
+        public_key = PublicKey(module, backend)
 
         if public_key.state == 'present':
             if module.check_mode:

test/integration/targets/openssl_publickey/tasks/impl.yml

@@ -0,0 +1,166 @@
+---
+- name: Generate privatekey
+  openssl_privatekey:
+    path: '{{ output_dir }}/privatekey.pem'
+
+- name: Generate publickey - PEM format
+  openssl_publickey:
+    path: '{{ output_dir }}/publickey.pub'
+    privatekey_path: '{{ output_dir }}/privatekey.pem'
+    select_crypto_backend: '{{ select_crypto_backend }}'
+
+- name: Generate publickey - OpenSSH format
+  openssl_publickey:
+    path: '{{ output_dir }}/publickey-ssh.pub'
+    privatekey_path: '{{ output_dir }}/privatekey.pem'
+    format: OpenSSH
+    select_crypto_backend: '{{ select_crypto_backend }}'
+  when: select_crypto_backend == 'cryptography' and cryptography_version.stdout is version('1.4.0', '>=')
+
+- name: Generate publickey - OpenSSH format - test idempotence (issue 33256)
+  openssl_publickey:
+    path: '{{ output_dir }}/publickey-ssh.pub'
+    privatekey_path: '{{ output_dir }}/privatekey.pem'
+    format: OpenSSH
+    select_crypto_backend: '{{ select_crypto_backend }}'
+  when: select_crypto_backend == 'cryptography' and cryptography_version.stdout is version('1.4.0', '>=')
+  register: publickey_ssh_idempotence
+
+- name: Generate publickey2 - standard
+  openssl_publickey:
+    path: '{{ output_dir }}/publickey2.pub'
+    privatekey_path: '{{ output_dir }}/privatekey.pem'
+    select_crypto_backend: '{{ select_crypto_backend }}'
+
+- name: Delete publickey2 - standard
+  openssl_publickey:
+    state: absent
+    path: '{{ output_dir }}/publickey2.pub'
+    privatekey_path: '{{ output_dir }}/privatekey.pem'
+    select_crypto_backend: '{{ select_crypto_backend }}'
+
+- name: Generate privatekey3 - with passphrase
+  openssl_privatekey:
+    path: '{{ output_dir }}/privatekey3.pem'
+    passphrase: ansible
+    cipher: aes256
+
+- name: Generate publickey3 - with passphrase protected privatekey
+  openssl_publickey:
+    path: '{{ output_dir }}/publickey3.pub'
+    privatekey_path: '{{ output_dir }}/privatekey3.pem'
+    privatekey_passphrase: ansible
+    select_crypto_backend: '{{ select_crypto_backend }}'
+
+- name: Generate publickey3 - with passphrase protected privatekey - idempotence
+  openssl_publickey:
+    path: '{{ output_dir }}/publickey3.pub'
+    privatekey_path: '{{ output_dir }}/privatekey3.pem'
+    privatekey_passphrase: ansible
+    select_crypto_backend: '{{ select_crypto_backend }}'
+  register: publickey3_idempotence
+
+- name: Generate empty file that will hold a public key (issue 33072)
+  file:
+    path: '{{ output_dir }}/publickey4.pub'
+    state: touch
+
+- name: Generate publickey in empty existing file (issue 33072)
+  openssl_publickey:
+    path: '{{ output_dir }}/publickey4.pub'
+    privatekey_path: '{{ output_dir }}/privatekey.pem'
+    select_crypto_backend: '{{ select_crypto_backend }}'
+
+- name: Generate privatekey 5 (ECC)
+  openssl_privatekey:
+    path: '{{ output_dir }}/privatekey5.pem'
+    type: ECC
+    curve: secp256r1
+
+- name: Generate publickey 5 - PEM format
+  openssl_publickey:
+    path: '{{ output_dir }}/publickey5.pub'
+    privatekey_path: '{{ output_dir }}/privatekey.pem'
+    backup: yes
+    select_crypto_backend: '{{ select_crypto_backend }}'
+  register: privatekey5_1
+- name: Generate publickey 5 - PEM format (idempotent)
+  openssl_publickey:
+    path: '{{ output_dir }}/publickey5.pub'
+    privatekey_path: '{{ output_dir }}/privatekey.pem'
+    backup: yes
+    select_crypto_backend: '{{ select_crypto_backend }}'
+  register: privatekey5_2
+- name: Generate publickey 5 - PEM format (different private key)
+  openssl_publickey:
+    path: '{{ output_dir }}/publickey5.pub'
+    privatekey_path: '{{ output_dir }}/privatekey5.pem'
+    backup: yes
+    select_crypto_backend: '{{ select_crypto_backend }}'
+  register: privatekey5_3
+
+- name: Generate privatekey with password
+  openssl_privatekey:
+    path: '{{ output_dir }}/privatekeypw.pem'
+    passphrase: hunter2
+    cipher: auto
+    select_crypto_backend: cryptography
+
+- name: Generate publickey - PEM format (failed passphrase 1)
+  openssl_publickey:
+    path: '{{ output_dir }}/publickey_pw1.pub'
+    privatekey_path: '{{ output_dir }}/privatekey.pem'
+    privatekey_passphrase: hunter2
+    select_crypto_backend: '{{ select_crypto_backend }}'
+  ignore_errors: yes
+  register: passphrase_error_1
+
+- name: Generate publickey - PEM format (failed passphrase 2)
+  openssl_publickey:
+    path: '{{ output_dir }}/publickey_pw2.pub'
+    privatekey_path: '{{ output_dir }}/privatekeypw.pem'
+    privatekey_passphrase: wrong_password
+    select_crypto_backend: '{{ select_crypto_backend }}'
+  ignore_errors: yes
+  register: passphrase_error_2
+
+- name: Generate publickey - PEM format (failed passphrase 3)
+  openssl_publickey:
+    path: '{{ output_dir }}/publickey_pw3.pub'
+    privatekey_path: '{{ output_dir }}/privatekeypw.pem'
+    select_crypto_backend: '{{ select_crypto_backend }}'
+  ignore_errors: yes
+  register: passphrase_error_3
+
+- name: Create broken key
+  copy:
+    dest: "{{ output_dir }}/publickeybroken.pub"
+    content: "broken"
+- name: Regenerate broken key
+  openssl_publickey:
+    path: '{{ output_dir }}/publickeybroken.pub'
+    privatekey_path: '{{ output_dir }}/privatekey5.pem'
+    select_crypto_backend: '{{ select_crypto_backend }}'
+  register: output_broken
+
+- name: Generate publickey - PEM format (for removal)
+  openssl_publickey:
+    path: '{{ output_dir }}/publickey_removal.pub'
+    privatekey_path: '{{ output_dir }}/privatekey.pem'
+    select_crypto_backend: '{{ select_crypto_backend }}'
+- name: Generate publickey - PEM format (removal)
+  openssl_publickey:
+    state: absent
+    path: '{{ output_dir }}/publickey_removal.pub'
+    privatekey_path: '{{ output_dir }}/privatekey.pem'
+    backup: yes
+    select_crypto_backend: '{{ select_crypto_backend }}'
+  register: remove_1
+- name: Generate publickey - PEM format (removal, idempotent)
+  openssl_publickey:
+    state: absent
+    path: '{{ output_dir }}/publickey_removal.pub'
+    privatekey_path: '{{ output_dir }}/privatekey.pem'
+    backup: yes
+    select_crypto_backend: '{{ select_crypto_backend }}'
+  register: remove_2

test/integration/targets/openssl_publickey/tasks/main.yml

@@ -1,156 +1,48 @@
 ---
 - block:
-    - name: Generate privatekey
-      openssl_privatekey:
-        path: '{{ output_dir }}/privatekey.pem'
+  - name: Generate privatekey1 - standard
+    openssl_privatekey:
+      path: '{{ output_dir }}/privatekey_autodetect.pem'
 
-    - name: Generate publickey - PEM format
-      openssl_publickey:
-        path: '{{ output_dir }}/publickey.pub'
-        privatekey_path: '{{ output_dir }}/privatekey.pem'
+  - name: Run module with backend autodetection
+    openssl_publickey:
+      path: '{{ output_dir }}/privatekey_autodetect_public.pem'
+      privatekey_path: '{{ output_dir }}/privatekey_autodetect.pem'
 
-    - name: Generate publickey - OpenSSH format
-      openssl_publickey:
-        path: '{{ output_dir }}/publickey-ssh.pub'
-        privatekey_path: '{{ output_dir }}/privatekey.pem'
-        format: OpenSSH
-      # cryptography.hazmat.primitives import serialization.Encoding.OpenSSH and
-      # cryptography.hazmat.primitives import serialization.PublicFormat.OpenSSH constants
-      # appeared in version 1.4 of cryptography
-      when: cryptography_version.stdout is version('1.4.0', '>=')
+  when: |
+    pyopenssl_version.stdout is version('16.0.0', '>=') or
+    cryptography_version.stdout is version('1.2.3', '>=')
 
-    - name: Generate publickey - OpenSSH format - test idempotence (issue 33256)
-      openssl_publickey:
-        path: '{{ output_dir }}/publickey-ssh.pub'
-        privatekey_path: '{{ output_dir }}/privatekey.pem'
-        format: OpenSSH
-      when: cryptography_version.stdout is version('1.4.0', '>=')
-      register: publickey_ssh_idempotence
-
-    - name: Generate publickey2 - standard
-      openssl_publickey:
-        path: '{{ output_dir }}/publickey2.pub'
-        privatekey_path: '{{ output_dir }}/privatekey.pem'
-
-    - name: Delete publickey2 - standard
-      openssl_publickey:
-        state: absent
-        path: '{{ output_dir }}/publickey2.pub'
-        privatekey_path: '{{ output_dir }}/privatekey.pem'
-
-    - name: Generate privatekey3 - with passphrase
-      openssl_privatekey:
-        path: '{{ output_dir }}/privatekey3.pem'
-        passphrase: ansible
-        cipher: aes256
-
-    - name: Generate publickey3 - with passphrase protected privatekey
-      openssl_publickey:
-        path: '{{ output_dir }}/publickey3.pub'
-        privatekey_path: '{{ output_dir }}/privatekey3.pem'
-        privatekey_passphrase: ansible
-
-    - name: Generate publickey3 - with passphrase protected privatekey - idempotence
-      openssl_publickey:
-        path: '{{ output_dir }}/publickey3.pub'
-        privatekey_path: '{{ output_dir }}/privatekey3.pem'
-        privatekey_passphrase: ansible
-      register: publickey3_idempotence
-
-    - name: Generate empty file that will hold a public key (issue 33072)
-      file:
-        path: '{{ output_dir }}/publickey4.pub'
-        state: touch
-
-    - name: Generate publickey in empty existing file (issue 33072)
-      openssl_publickey:
-        path: '{{ output_dir }}/publickey4.pub'
-        privatekey_path: '{{ output_dir }}/privatekey.pem'
-
-    - name: Generate privatekey 5 (ECC)
-      openssl_privatekey:
-        path: '{{ output_dir }}/privatekey5.pem'
-        type: ECC
-        curve: secp256k1
-
-    - name: Generate publickey 5 - PEM format
-      openssl_publickey:
-        path: '{{ output_dir }}/publickey5.pub'
-        privatekey_path: '{{ output_dir }}/privatekey.pem'
-        backup: yes
-      register: privatekey5_1
-    - name: Generate publickey 5 - PEM format (idempotent)
-      openssl_publickey:
-        path: '{{ output_dir }}/publickey5.pub'
-        privatekey_path: '{{ output_dir }}/privatekey.pem'
-        backup: yes
-      register: privatekey5_2
-    - name: Generate publickey 5 - PEM format (different private key)
-      openssl_publickey:
-        path: '{{ output_dir }}/publickey5.pub'
-        privatekey_path: '{{ output_dir }}/privatekey5.pem'
-        backup: yes
-      register: privatekey5_3
-
-    - name: Generate privatekey with password
-      openssl_privatekey:
-        path: '{{ output_dir }}/privatekeypw.pem'
-        passphrase: hunter2
-        cipher: auto
-        select_crypto_backend: cryptography
+- block:
+  - name: Running tests with pyOpenSSL backend
+    include_tasks: impl.yml
+    vars:
+      select_crypto_backend: pyopenssl
 
-    - name: Generate publickey - PEM format (failed passphrase 1)
-      openssl_publickey:
-        path: '{{ output_dir }}/publickey_pw1.pub'
-        privatekey_path: '{{ output_dir }}/privatekey.pem'
-        privatekey_passphrase: hunter2
-      ignore_errors: yes
-      register: passphrase_error_1
+  - import_tasks: ../tests/validate.yml
+    vars:
+      select_crypto_backend: pyopenssl
 
-    - name: Generate publickey - PEM format (failed passphrase 2)
-      openssl_publickey:
-        path: '{{ output_dir }}/publickey_pw2.pub'
-        privatekey_path: '{{ output_dir }}/privatekeypw.pem'
-        privatekey_passphrase: wrong_password
-      ignore_errors: yes
-      register: passphrase_error_2
+  when: pyopenssl_version.stdout is version('16.0.0', '>=')
 
-    - name: Generate publickey - PEM format (failed passphrase 3)
-      openssl_publickey:
-        path: '{{ output_dir }}/publickey_pw3.pub'
-        privatekey_path: '{{ output_dir }}/privatekeypw.pem'
-      ignore_errors: yes
-      register: passphrase_error_3
+- name: Remove output directory
+  file:
+    path: "{{ output_dir }}"
+    state: absent
 
-    - name: Create broken key
-      copy:
-        dest: "{{ output_dir }}/publickeybroken.pub"
-        content: "broken"
-    - name: Regenerate broken key
-      openssl_publickey:
-        path: '{{ output_dir }}/publickeybroken.pub'
-        privatekey_path: '{{ output_dir }}/privatekey5.pem'
-      register: output_broken
+- name: Re-create output directory
+  file:
+    path: "{{ output_dir }}"
+    state: directory
 
-    - name: Generate publickey - PEM format (for removal)
-      openssl_publickey:
-        path: '{{ output_dir }}/publickey_removal.pub'
-        privatekey_path: '{{ output_dir }}/privatekey.pem'
-    - name: Generate publickey - PEM format (removal)
-      openssl_publickey:
-        state: absent
-        path: '{{ output_dir }}/publickey_removal.pub'
-        privatekey_path: '{{ output_dir }}/privatekey.pem'
-        backup: yes
-      register: remove_1
-    - name: Generate publickey - PEM format (removal, idempotent)
-      openssl_publickey:
-        state: absent
-        path: '{{ output_dir }}/publickey_removal.pub'
-        privatekey_path: '{{ output_dir }}/privatekey.pem'
-        backup: yes
-      register: remove_2
+- block:
+  - name: Running tests with cryptography backend
+    include_tasks: impl.yml
+    vars:
+      select_crypto_backend: cryptography
 
-    - import_tasks: ../tests/validate.yml
+  - import_tasks: ../tests/validate.yml
+    vars:
+      select_crypto_backend: cryptography
 
-  when: pyopenssl_version.stdout is version('16.0.0', '>=')
+  when: cryptography_version.stdout is version('1.2.3', '>=')

test/integration/targets/openssl_publickey/tests/validate.yml

@@ -15,25 +15,25 @@
 - name: Validate public key - OpenSSH format (test - privatekey's publickey)
   shell: 'ssh-keygen -y -f {{ output_dir }}/privatekey.pem'
   register: privatekey_publickey
-  when: cryptography_version.stdout is version('1.4.0', '>=')
+  when: select_crypto_backend == 'cryptography' and cryptography_version.stdout is version('1.4.0', '>=')
 
 - name: Validate public key - OpenSSH format  (test - publickey)
   slurp:
     src: '{{ output_dir }}/publickey-ssh.pub'
   register: publickey
-  when: cryptography_version.stdout is version('1.4.0', '>=')
+  when: select_crypto_backend == 'cryptography' and cryptography_version.stdout is version('1.4.0', '>=')
 
 - name: Validate public key - OpenSSH format (assert)
   assert:
     that:
       - privatekey_publickey.stdout == '{{ publickey.content|b64decode }}'
-  when: cryptography_version.stdout is version('1.4.0', '>=')
+  when: select_crypto_backend == 'cryptography' and cryptography_version.stdout is version('1.4.0', '>=')
 
 - name: Validate public key - OpenSSH format - test idempotence (issue 33256)
   assert:
     that:
       - publickey_ssh_idempotence is not changed
-  when: cryptography_version.stdout is version('1.4.0', '>=')
+  when: select_crypto_backend == 'cryptography' and cryptography_version.stdout is version('1.4.0', '>=')
 
 - name: Validate publickey2 (test - Ensure key has been removed)
   stat: