ACME: use Cryptography (if a new enough version is available) instead of OpenSSL (#42170)

* Collecting PEM -> DER conversions.

* Using cryptography instead of OpenSSL binary in some situations.

* Moving key-to-disk writing for key content to parse_account_key.

* Rename parse_account_key -> parse_key.

* Move OpenSSL specific code for key parsing and request signing into global functions.

* Also using cryptography for key parsing and request signing.

* Remove assert statements.

* Fixing handling of key contents for cryptography code path.

* Allow to disable the use of cryptography.

* Updating documentation.

* 1.5 seems to work as well (earlier versions don't have EC sign function). Making Python 2.x adjustments.

* Changing option to select_crypto_backend.

* Python 2.6 compatibility.

* Trying to test both backends separately for acme_account.

* Also testing both backends separately for acme_certificate and acme_certificate_revoke.

* Adding changelog entry which informs about select_crypto_backend option in case autodetect fails.

* Fixing YAML.

changelogs/fragments/42170-acme-backend-selection.yaml

@@ -0,0 +1,8 @@
+---
+minor_changes:
+- "The acme_account and acme_certificate modules now support two backends:
+   the Python cryptograpy module or the OpenSSL binary. By default, the
+   modules detect if a new enough cryptography module is available and
+   use it, with the OpenSSL binary being a fallback. If the detection
+   fails for some reason, the OpenSSL binary backend can be explicitly
+   selected by setting select_crypto_backend to openssl."

lib/ansible/module_utils/acme.py

@@ -17,17 +17,38 @@ __metaclass__ = type
 import base64
 import binascii
 import copy
+import datetime
 import hashlib
 import json
 import os
 import re
 import shutil
+import sys
 import tempfile
 import traceback
 
 from ansible.module_utils._text import to_native, to_text, to_bytes
 from ansible.module_utils.urls import fetch_url as _fetch_url
 
+try:
+    import cryptography
+    import cryptography.hazmat.backends
+    import cryptography.hazmat.primitives.serialization
+    import cryptography.hazmat.primitives.asymmetric.rsa
+    import cryptography.hazmat.primitives.asymmetric.ec
+    import cryptography.hazmat.primitives.asymmetric.padding
+    import cryptography.hazmat.primitives.hashes
+    import cryptography.hazmat.primitives.asymmetric.utils
+    import cryptography.x509
+    import cryptography.x509.oid
+    from distutils.version import LooseVersion
+    CRYPTOGRAPHY_VERSION = cryptography.__version__
+    HAS_CURRENT_CRYPTOGRAPHY = (LooseVersion(CRYPTOGRAPHY_VERSION) >= LooseVersion('1.5'))
+    if HAS_CURRENT_CRYPTOGRAPHY:
+        _cryptography_backend = cryptography.hazmat.backends.default_backend()
+except Exception as _:
+    HAS_CURRENT_CRYPTOGRAPHY = False
+
 
 class ModuleFailException(Exception):
     '''
@@ -83,6 +104,14 @@ def simple_get(module, url):
     return result
 
 
+def read_file(fn, mode='b'):
+    try:
+        with open(fn, 'r' + mode) as f:
+            return f.read()
+    except Exception as e:
+        raise ModuleFailException('Error while reading file "{0}": {1}'.format(fn, e))
+
+
 # function source: network/basics/uri.py
 def write_file(module, dest, content):
     '''
@@ -141,72 +170,43 @@ def write_file(module, dest, content):
     return changed
 
 
-class ACMEDirectory(object):
+def pem_to_der(pem_filename):
     '''
-    The ACME server directory. Gives access to the available resources,
-    and allows to obtain a Replay-Nonce. The acme_directory URL
-    needs to support unauthenticated GET requests; ACME endpoints
-    requiring authentication are not supported.
-    https://tools.ietf.org/html/draft-ietf-acme-acme-12#section-7.1.1
-    '''
-
-    def __init__(self, module):
-        self.module = module
-        self.directory_root = module.params['acme_directory']
-        self.version = module.params['acme_version']
-
-        self.directory = simple_get(self.module, self.directory_root)
-
-        # Check whether self.version matches what we expect
-        if self.version == 1:
-            for key in ('new-reg', 'new-authz', 'new-cert'):
-                if key not in self.directory:
-                    raise ModuleFailException("ACME directory does not seem to follow protocol ACME v1")
-        if self.version == 2:
-            for key in ('newNonce', 'newAccount', 'newOrder'):
-                if key not in self.directory:
-                    raise ModuleFailException("ACME directory does not seem to follow protocol ACME v2")
-
-    def __getitem__(self, key):
-        return self.directory[key]
+    Load PEM file, and convert to DER.
 
-    def get_nonce(self, resource=None):
-        url = self.directory_root if self.version == 1 else self.directory['newNonce']
-        if resource is not None:
-            url = resource
-        dummy, info = fetch_url(self.module, url, method='HEAD')
-        if info['status'] not in (200, 204):
-            raise ModuleFailException("Failed to get replay-nonce, got status {0}".format(info['status']))
-        return info['replay-nonce']
+    If PEM contains multiple entities, the first entity will be used.
+    '''
+    certificate_lines = []
+    try:
+        with open(pem_filename, "rt") as f:
+            header_line_count = 0
+            for line in f:
+                if line.startswith('-----'):
+                    header_line_count += 1
+                    if header_line_count == 2:
+                        # If certificate file contains other certs appended
+                        # (like intermediate certificates), ignore these.
+                        break
+                    continue
+                certificate_lines.append(line.strip())
+    except Exception as err:
+        raise ModuleFailException("cannot load PEM file {0}: {1}".format(pem_filename, to_native(err)), exception=traceback.format_exc())
+    return base64.b64decode(''.join(certificate_lines))
 
 
-class ACMEAccount(object):
+def _parse_key_openssl(openssl_binary, module, key_file=None, key_content=None):
     '''
-    ACME account object. Handles the authorized communication with the
-    ACME server. Provides access to account bound information like
-    the currently active authorizations and valid certificates
+    Parses an RSA or Elliptic Curve key file in PEM format and returns a pair
+    (error, key_data).
     '''
-
-    def __init__(self, module):
-        self.module = module
-        self.version = module.params['acme_version']
-        # account_key path and content are mutually exclusive
-        self.key = module.params['account_key_src']
-        self.key_content = module.params['account_key_content']
-        self.directory = ACMEDirectory(module)
-
-        self.uri = None
-
-        self._openssl_bin = module.get_bin_path('openssl', True)
-
-        # Create a key file from content, key (path) and key content are mutually exclusive
-        if self.key_content is not None:
+    # If key_file isn't given, but key_content, write that to a temporary file
+    if key_file is None:
         fd, tmpsrc = tempfile.mkstemp()
         module.add_cleanup_file(tmpsrc)  # Ansible will delete the file on exit
         f = os.fdopen(fd, 'wb')
         try:
-                f.write(self.key_content.encode('utf-8'))
-                self.key = tmpsrc
+            f.write(key_content.encode('utf-8'))
+            key_file = tmpsrc
         except Exception as err:
             try:
                 f.close()
@@ -214,33 +214,9 @@ class ACMEAccount(object):
                 pass
             raise ModuleFailException("failed to create temporary content file: %s" % to_native(err), exception=traceback.format_exc())
         f.close()
-
-        if self.key is not None:
-            error, self.key_data = self.parse_account_key(self.key)
-            if error:
-                raise ModuleFailException("error while parsing account key: %s" % error)
-            self.jwk = self.key_data['jwk']
-            self.jws_header = {
-                "alg": self.key_data['alg'],
-                "jwk": self.jwk,
-            }
-
-    def get_keyauthorization(self, token):
-        '''
-        Returns the key authorization for the given token
-        https://tools.ietf.org/html/draft-ietf-acme-acme-12#section-8.1
-        '''
-        accountkey_json = json.dumps(self.jwk, sort_keys=True, separators=(',', ':'))
-        thumbprint = nopad_b64(hashlib.sha256(accountkey_json.encode('utf8')).digest())
-        return "{0}.{1}".format(token, thumbprint)
-
-    def parse_account_key(self, key):
-        '''
-        Parses an RSA or Elliptic Curve key file in PEM format and returns a pair
-        (error, key_data).
-        '''
+    # Parse key
     account_key_type = None
-        with open(key, "rt") as f:
+    with open(key_file, "rt") as f:
         for line in f:
             m = re.match(r"^\s*-{5,}BEGIN\s+(EC|RSA)\s+PRIVATE\s+KEY-{5,}\s*$", line)
             if m is not None:
@@ -255,8 +231,8 @@ class ACMEAccount(object):
     if account_key_type not in ("rsa", "ec"):
         return 'unknown key type "%s"' % account_key_type, {}
 
-        openssl_keydump_cmd = [self._openssl_bin, account_key_type, "-in", key, "-noout", "-text"]
-        dummy, out, dummy = self.module.run_command(openssl_keydump_cmd, check_rc=True)
+    openssl_keydump_cmd = [openssl_binary, account_key_type, "-in", key_file, "-noout", "-text"]
+    dummy, out, dummy = module.run_command(openssl_keydump_cmd, check_rc=True)
 
     if account_key_type == 'rsa':
         pub_hex, pub_exp = re.search(
@@ -267,6 +243,7 @@ class ACMEAccount(object):
             pub_exp = "0{0}".format(pub_exp)
 
         return None, {
+            'key_file': key_file,
             'type': 'rsa',
             'alg': 'RS256',
             'jwk': {
@@ -311,6 +288,7 @@ class ACMEAccount(object):
         if len(pub_hex) != 2 * bytes:
             return 'bad elliptic curve point (%s / %s)' % (asn1_oid_curve, nist_curve), {}
         return None, {
+            'key_file': key_file,
             'type': 'ec',
             'alg': alg,
             'jwk': {
@@ -323,20 +301,15 @@ class ACMEAccount(object):
             'point_size': point_size,
         }
 
-    def sign_request(self, protected, payload, key_data, key):
-        try:
-            payload64 = nopad_b64(self.module.jsonify(payload).encode('utf8'))
-            protected64 = nopad_b64(self.module.jsonify(protected).encode('utf8'))
-        except Exception as e:
-            raise ModuleFailException("Failed to encode payload / headers as JSON: {0}".format(e))
 
-        openssl_sign_cmd = [self._openssl_bin, "dgst", "-{0}".format(key_data['hash']), "-sign", key]
+def _sign_request_openssl(openssl_binary, module, payload64, protected64, key_data):
+    openssl_sign_cmd = [openssl_binary, "dgst", "-{0}".format(key_data['hash']), "-sign", key_data['key_file']]
     sign_payload = "{0}.{1}".format(protected64, payload64).encode('utf8')
-        dummy, out, dummy = self.module.run_command(openssl_sign_cmd, data=sign_payload, check_rc=True, binary_data=True)
+    dummy, out, dummy = module.run_command(openssl_sign_cmd, data=sign_payload, check_rc=True, binary_data=True)
 
     if key_data['type'] == 'ec':
-            dummy, der_out, dummy = self.module.run_command(
-                [self._openssl_bin, "asn1parse", "-inform", "DER"],
+        dummy, der_out, dummy = module.run_command(
+            [openssl_binary, "asn1parse", "-inform", "DER"],
             data=out, binary_data=True)
         expected_len = 2 * key_data['point_size']
         sig = re.findall(
@@ -356,14 +329,245 @@ class ACMEAccount(object):
         "signature": nopad_b64(to_bytes(out)),
     }
 
-    def send_signed_request(self, url, payload, key_data=None, key=None, jws_header=None):
+
+if sys.version_info[0] >= 3:
+    # Python 3 (and newer)
+    def _count_bytes(n):
+        return (n.bit_length() + 7) // 8 if n > 0 else 0
+
+    def _convert_int_to_bytes(count, no):
+        return no.to_bytes(count, byteorder='big')
+
+    def _pad_hex(n, digits):
+        res = hex(n)[2:]
+        if len(res) < digits:
+            res = '0' * (digits - len(res)) + res
+        return res
+else:
+    # Python 2
+    def _count_bytes(n):
+        if n <= 0:
+            return 0
+        h = '%x' % n
+        return (len(h) + 1) // 2
+
+    def _convert_int_to_bytes(count, n):
+        h = '%x' % n
+        if len(h) > 2 * count:
+            raise Exception('Number {1} needs more than {0} bytes!'.format(count, n))
+        return ('0' * (2 * count - len(h)) + h).decode('hex')
+
+    def _pad_hex(n, digits):
+        h = '%x' % n
+        if len(h) < digits:
+            h = '0' * (digits - len(h)) + h
+        return h
+
+
+def _parse_key_cryptography(module, key_file=None, key_content=None):
+    '''
+    Parses an RSA or Elliptic Curve key file in PEM format and returns a pair
+    (error, key_data).
+    '''
+    # If key_content isn't given, read key_file
+    if key_content is None:
+        key_content = read_file(key_file)
+    else:
+        key_content = to_bytes(key_content)
+    # Parse key
+    try:
+        key = cryptography.hazmat.primitives.serialization.load_pem_private_key(key_content, password=None, backend=_cryptography_backend)
+    except Exception as e:
+        return 'error while loading key: {0}'.format(e), None
+    if isinstance(key, cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey):
+        pk = key.public_key().public_numbers()
+        return None, {
+            'key_obj': key,
+            'type': 'rsa',
+            'alg': 'RS256',
+            'jwk': {
+                "kty": "RSA",
+                "e": nopad_b64(_convert_int_to_bytes(_count_bytes(pk.e), pk.e)),
+                "n": nopad_b64(_convert_int_to_bytes(_count_bytes(pk.n), pk.n)),
+            },
+            'hash': 'sha256',
+        }
+    elif isinstance(key, cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey):
+        pk = key.public_key().public_numbers()
+        if pk.curve.name == 'secp256r1':
+            bits = 256
+            alg = 'ES256'
+            hash = 'sha256'
+            point_size = 32
+            curve = 'P-256'
+        elif pk.curve.name == 'secp384r1':
+            bits = 384
+            alg = 'ES384'
+            hash = 'sha384'
+            point_size = 48
+            curve = 'P-384'
+        elif pk.curve.name == 'secp521r1':
+            # Not yet supported on Let's Encrypt side, see
+            # https://github.com/letsencrypt/boulder/issues/2217
+            bits = 521
+            alg = 'ES512'
+            hash = 'sha512'
+            point_size = 66
+            curve = 'P-521'
+        else:
+            return 'unknown elliptic curve: {0}'.format(pk.curve.name), {}
+        bytes = (bits + 7) // 8
+        return None, {
+            'key_obj': key,
+            'type': 'ec',
+            'alg': alg,
+            'jwk': {
+                "kty": "EC",
+                "crv": curve,
+                "x": nopad_b64(_convert_int_to_bytes(bytes, pk.x)),
+                "y": nopad_b64(_convert_int_to_bytes(bytes, pk.y)),
+            },
+            'hash': hash,
+            'point_size': point_size,
+        }
+    else:
+        return 'unknown key type "{0}"'.format(type(key)), {}
+
+
+def _sign_request_cryptography(module, payload64, protected64, key_data):
+    sign_payload = "{0}.{1}".format(protected64, payload64).encode('utf8')
+    if isinstance(key_data['key_obj'], cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey):
+        padding = cryptography.hazmat.primitives.asymmetric.padding.PKCS1v15()
+        hash = cryptography.hazmat.primitives.hashes.SHA256()
+        signature = key_data['key_obj'].sign(sign_payload, padding, hash)
+    elif isinstance(key_data['key_obj'], cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey):
+        if key_data['hash'] == 'sha256':
+            hash = cryptography.hazmat.primitives.hashes.SHA256
+        elif key_data['hash'] == 'sha384':
+            hash = cryptography.hazmat.primitives.hashes.SHA384
+        elif key_data['hash'] == 'sha512':
+            hash = cryptography.hazmat.primitives.hashes.SHA512
+        ecdsa = cryptography.hazmat.primitives.asymmetric.ec.ECDSA(hash())
+        r, s = cryptography.hazmat.primitives.asymmetric.utils.decode_dss_signature(key_data['key_obj'].sign(sign_payload, ecdsa))
+        rr = _pad_hex(r, 2 * key_data['point_size'])
+        ss = _pad_hex(s, 2 * key_data['point_size'])
+        signature = binascii.unhexlify(rr) + binascii.unhexlify(ss)
+
+    return {
+        "protected": protected64,
+        "payload": payload64,
+        "signature": nopad_b64(signature),
+    }
+
+
+class ACMEDirectory(object):
+    '''
+    The ACME server directory. Gives access to the available resources,
+    and allows to obtain a Replay-Nonce. The acme_directory URL
+    needs to support unauthenticated GET requests; ACME endpoints
+    requiring authentication are not supported.
+    https://tools.ietf.org/html/draft-ietf-acme-acme-12#section-7.1.1
+    '''
+
+    def __init__(self, module):
+        self.module = module
+        self.directory_root = module.params['acme_directory']
+        self.version = module.params['acme_version']
+
+        self.directory = simple_get(self.module, self.directory_root)
+
+        # Check whether self.version matches what we expect
+        if self.version == 1:
+            for key in ('new-reg', 'new-authz', 'new-cert'):
+                if key not in self.directory:
+                    raise ModuleFailException("ACME directory does not seem to follow protocol ACME v1")
+        if self.version == 2:
+            for key in ('newNonce', 'newAccount', 'newOrder'):
+                if key not in self.directory:
+                    raise ModuleFailException("ACME directory does not seem to follow protocol ACME v2")
+
+    def __getitem__(self, key):
+        return self.directory[key]
+
+    def get_nonce(self, resource=None):
+        url = self.directory_root if self.version == 1 else self.directory['newNonce']
+        if resource is not None:
+            url = resource
+        dummy, info = fetch_url(self.module, url, method='HEAD')
+        if info['status'] not in (200, 204):
+            raise ModuleFailException("Failed to get replay-nonce, got status {0}".format(info['status']))
+        return info['replay-nonce']
+
+
+class ACMEAccount(object):
+    '''
+    ACME account object. Handles the authorized communication with the
+    ACME server. Provides access to account bound information like
+    the currently active authorizations and valid certificates
+    '''
+
+    def __init__(self, module):
+        self.module = module
+        self.version = module.params['acme_version']
+        # account_key path and content are mutually exclusive
+        self.key = module.params['account_key_src']
+        self.key_content = module.params['account_key_content']
+        self.directory = ACMEDirectory(module)
+
+        self.uri = None
+
+        self._openssl_bin = module.get_bin_path('openssl', True)
+
+        if self.key is not None or self.key_content is not None:
+            error, self.key_data = self.parse_key(self.key, self.key_content)
+            if error:
+                raise ModuleFailException("error while parsing account key: %s" % error)
+            self.jwk = self.key_data['jwk']
+            self.jws_header = {
+                "alg": self.key_data['alg'],
+                "jwk": self.jwk,
+            }
+
+    def get_keyauthorization(self, token):
+        '''
+        Returns the key authorization for the given token
+        https://tools.ietf.org/html/draft-ietf-acme-acme-12#section-8.1
+        '''
+        accountkey_json = json.dumps(self.jwk, sort_keys=True, separators=(',', ':'))
+        thumbprint = nopad_b64(hashlib.sha256(accountkey_json.encode('utf8')).digest())
+        return "{0}.{1}".format(token, thumbprint)
+
+    def parse_key(self, key_file=None, key_content=None):
+        '''
+        Parses an RSA or Elliptic Curve key file in PEM format and returns a pair
+        (error, key_data).
+        '''
+        if key_file is None and key_content is None:
+            raise AssertionError('One of key_file and key_content must be specified!')
+        if HAS_CURRENT_CRYPTOGRAPHY:
+            return _parse_key_cryptography(self.module, key_file, key_content)
+        else:
+            return _parse_key_openssl(self._openssl_bin, self.module, key_file, key_content)
+
+    def sign_request(self, protected, payload, key_data):
+        try:
+            payload64 = nopad_b64(self.module.jsonify(payload).encode('utf8'))
+            protected64 = nopad_b64(self.module.jsonify(protected).encode('utf8'))
+        except Exception as e:
+            raise ModuleFailException("Failed to encode payload / headers as JSON: {0}".format(e))
+
+        if HAS_CURRENT_CRYPTOGRAPHY:
+            return _sign_request_cryptography(self.module, payload64, protected64, key_data)
+        else:
+            return _sign_request_openssl(self._openssl_bin, self.module, payload64, protected64, key_data)
+
+    def send_signed_request(self, url, payload, key_data=None, jws_header=None):
         '''
         Sends a JWS signed HTTP POST request to the ACME server and returns
         the response as dictionary
         https://tools.ietf.org/html/draft-ietf-acme-acme-12#section-6.2
         '''
         key_data = key_data or self.key_data
-        key = key or self.key
         jws_header = jws_header or self.jws_header
         failed_tries = 0
         while True:
@@ -372,7 +576,7 @@ class ACMEAccount(object):
             if self.version != 1:
                 protected["url"] = url
 
-            data = self.sign_request(protected, payload, key_data, key)
+            data = self.sign_request(protected, payload, key_data)
             if self.version == 1:
                 data["header"] = jws_header
             data = self.module.jsonify(data)
@@ -530,3 +734,67 @@ class ACMEAccount(object):
                     result, dummy = self.send_signed_request(self.uri, upd_reg)
                 changed = True
         return new_account or changed
+
+
+def cryptography_get_csr_domains(module, csr_filename):
+    '''
+    Return a set of requested domains (CN and SANs) for the CSR.
+    '''
+    domains = set([])
+    csr = cryptography.x509.load_pem_x509_csr(read_file(csr_filename), _cryptography_backend)
+    for sub in csr.subject:
+        if sub.oid == cryptography.x509.oid.NameOID.COMMON_NAME:
+            domains.add(sub.value)
+    for extension in csr.extensions:
+        if extension.oid == cryptography.x509.oid.ExtensionOID.SUBJECT_ALTERNATIVE_NAME:
+            for name in extension.value:
+                if isinstance(name, cryptography.x509.DNSName):
+                    domains.add(name.value)
+    return domains
+
+
+def cryptography_get_cert_days(module, cert_file):
+    '''
+    Return the days the certificate in cert_file remains valid and -1
+    if the file was not found. If cert_file contains more than one
+    certificate, only the first one will be considered.
+    '''
+    if not os.path.exists(cert_file):
+        return -1
+
+    try:
+        cert = cryptography.x509.load_pem_x509_certificate(read_file(cert_file), _cryptography_backend)
+    except Exception as e:
+        raise ModuleFailException('Cannot parse certificate {0}: {1}'.format(cert_file, e))
+    now = datetime.datetime.now()
+    return (cert.not_valid_after - now).days
+
+
+def set_crypto_backend(module):
+    '''
+    Sets which crypto backend to use (default: auto detection).
+
+    Does not care whether a new enough cryptoraphy is available or not. Must
+    be called before any real stuff is done which might evaluate
+    ``HAS_CURRENT_CRYPTOGRAPHY``.
+    '''
+    global HAS_CURRENT_CRYPTOGRAPHY
+    # Choose backend
+    backend = module.params['select_crypto_backend']
+    if backend == 'auto':
+        pass
+    elif backend == 'openssl':
+        HAS_CURRENT_CRYPTOGRAPHY = False
+    elif backend == 'cryptography':
+        try:
+            cryptography.__version__
+        except Exception as _:
+            module.fail_json(msg='Cannot find cryptography module!')
+        HAS_CURRENT_CRYPTOGRAPHY = True
+    else:
+        module.fail_json(msg='Unknown crypto backend "{0}"!'.format(backend))
+    # Inform about choices
+    if HAS_CURRENT_CRYPTOGRAPHY:
+        module.debug('Using cryptography backend (library version {0})'.format(CRYPTOGRAPHY_VERSION))
+    else:
+        module.debug('Using OpenSSL binary backend')

lib/ansible/modules/web_infrastructure/acme_account.py

@@ -116,15 +116,10 @@ account_uri:
 '''
 
 from ansible.module_utils.acme import (
-    ModuleFailException, ACMEAccount
+    ModuleFailException, ACMEAccount, set_crypto_backend,
 )
 
-import os
-import tempfile
-import traceback
-
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils._text import to_native
 
 
 def main():
@@ -141,6 +136,7 @@ def main():
             contact=dict(required=False, type='list', default=[]),
             new_account_key_src=dict(type='path'),
             new_account_key_content=dict(type='str', no_log=True),
+            select_crypto_backend=dict(required=False, choices=['auto', 'openssl', 'cryptography'], default='auto', type='str'),
         ),
         required_one_of=(
             ['account_key_src', 'account_key_content'],
@@ -156,6 +152,7 @@ def main():
         ),
         supports_check_mode=True,
     )
+    set_crypto_backend(module)
 
     if not module.params.get('validate_certs'):
         module.warn(warning='Disabling certificate validation for communications with ACME endpoint. ' +
@@ -203,24 +200,11 @@ def main():
                 raise ModuleFailException(msg='Account does not exist or is deactivated.')
             module.exit_json(changed=changed, account_uri=account.uri)
         elif state == 'changed_key':
-            # Get hold of new account key
-            new_key = module.params.get('new_account_key_src')
-            if new_key is None:
-                fd, tmpsrc = tempfile.mkstemp()
-                module.add_cleanup_file(tmpsrc)  # Ansible will delete the file on exit
-                f = os.fdopen(fd, 'wb')
-                try:
-                    f.write(module.params.get('new_account_key_content').encode('utf-8'))
-                    new_key = tmpsrc
-                except Exception as err:
-                    try:
-                        f.close()
-                    except Exception as e:
-                        pass
-                    raise ModuleFailException("failed to create temporary content file: %s" % to_native(err), exception=traceback.format_exc())
-                f.close()
             # Parse new account key
-            error, new_key_data = account.parse_account_key(new_key)
+            error, new_key_data = account.parse_key(
+                module.params.get('new_account_key_src'),
+                module.params.get('new_account_key_content')
+            )
             if error:
                 raise ModuleFailException("error while parsing account key: %s" % error)
             # Verify that the account exists and has not been deactivated
@@ -249,7 +233,7 @@ def main():
                     "oldKey": account.jwk,  # discussed in https://github.com/ietf-wg-acme/acme/pull/425,
                                             # might be required in draft 13
                 }
-                data = account.sign_request(protected, payload, new_key_data, new_key)
+                data = account.sign_request(protected, payload, new_key_data)
                 # Send request and verify result
                 result, info = account.send_signed_request(url, data)
                 if info['status'] != 200:

lib/ansible/modules/web_infrastructure/acme_certificate.py

@@ -328,7 +328,9 @@ account_uri:
 '''
 
 from ansible.module_utils.acme import (
-    ModuleFailException, fetch_url, write_file, nopad_b64, simple_get, ACMEAccount
+    ModuleFailException, fetch_url, write_file, nopad_b64, simple_get, pem_to_der, ACMEAccount,
+    HAS_CURRENT_CRYPTOGRAPHY, cryptography_get_csr_domains, cryptography_get_cert_days,
+    set_crypto_backend,
 )
 
 import base64
@@ -350,6 +352,8 @@ def get_cert_days(module, cert_file):
     if the file was not found. If cert_file contains more than one
     certificate, only the first one will be considered.
     '''
+    if HAS_CURRENT_CRYPTOGRAPHY:
+        return cryptography_get_cert_days(module, cert_file)
     if not os.path.exists(cert_file):
         return -1
 
@@ -422,6 +426,8 @@ class ACMEClient(object):
         '''
         Parse the CSR and return the list of requested domains
         '''
+        if HAS_CURRENT_CRYPTOGRAPHY:
+            return cryptography_get_csr_domains(self.module, self.csr)
         openssl_csr_cmd = [self._openssl_bin, "req", "-in", self.csr, "-noout", "-text"]
         dummy, out, dummy = self.module.run_command(openssl_csr_cmd, check_rc=True)
 
@@ -569,11 +575,9 @@ class ACMEClient(object):
         Return the certificate object as dict
         https://tools.ietf.org/html/draft-ietf-acme-acme-12#section-7.4
         '''
-        openssl_csr_cmd = [self._openssl_bin, "req", "-in", self.csr, "-outform", "DER"]
-        dummy, out, dummy = self.module.run_command(openssl_csr_cmd, check_rc=True)
-
+        csr = pem_to_der(self.csr)
         new_cert = {
-            "csr": nopad_b64(to_bytes(out)),
+            "csr": nopad_b64(csr),
         }
         result, info = self.account.send_signed_request(self.finalize_uri, new_cert)
         if info['status'] not in [200]:
@@ -650,12 +654,10 @@ class ACMEClient(object):
         Return the certificate object as dict
         https://tools.ietf.org/html/draft-ietf-acme-acme-02#section-6.5
         '''
-        openssl_csr_cmd = [self._openssl_bin, "req", "-in", self.csr, "-outform", "DER"]
-        dummy, out, dummy = self.module.run_command(openssl_csr_cmd, check_rc=True)
-
+        csr = pem_to_der(self.csr)
         new_cert = {
             "resource": "new-cert",
-            "csr": nopad_b64(to_bytes(out)),
+            "csr": nopad_b64(csr),
         }
         result, info = self.account.send_signed_request(self.directory['new-cert'], new_cert)
 
@@ -883,6 +885,7 @@ def main():
             remaining_days=dict(required=False, default=10, type='int'),
             deactivate_authzs=dict(required=False, default=False, type='bool'),
             force=dict(required=False, default=False, type='bool'),
+            select_crypto_backend=dict(required=False, choices=['auto', 'openssl', 'cryptography'], default='auto', type='str'),
         ),
         required_one_of=(
             ['account_key_src', 'account_key_content'],
@@ -895,6 +898,7 @@ def main():
     )
     if module._name == 'letsencrypt':
         module.deprecate("The 'letsencrypt' module is being renamed 'acme_certificate'", version='2.10')
+    set_crypto_backend(module)
 
     # AnsibleModule() changes the locale, so change it back to C because we rely on time.strptime() when parsing certificate dates.
     module.run_command_environ_update = dict(LANG='C', LC_ALL='C', LC_MESSAGES='C', LC_CTYPE='C')

lib/ansible/modules/web_infrastructure/acme_certificate_revoke.py

@@ -53,6 +53,10 @@ options:
          important private key — it can be used to change the account key,
          or to revoke your certificates without knowing their private keys
          —, this might not be acceptable."
+      - "In case C(cryptography) is used, the content is not written into a
+         temporary file. It can still happen that it is written to disk by
+         Ansible in the process of moving the module with its argument to
+         the node where it is executed."
   revoke_reason:
     description:
       - "One of the revocation reasonCodes defined in
@@ -80,16 +84,10 @@ RETURN = '''
 '''
 
 from ansible.module_utils.acme import (
-    ModuleFailException, ACMEAccount, nopad_b64
+    ModuleFailException, ACMEAccount, nopad_b64, pem_to_der, set_crypto_backend,
 )
 
-import base64
-import os
-import tempfile
-import traceback
-
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils._text import to_native
 
 
 def main():
@@ -104,6 +102,7 @@ def main():
             private_key_content=dict(type='str', no_log=True),
             certificate=dict(required=True, type='path'),
             revoke_reason=dict(required=False, type='int'),
+            select_crypto_backend=dict(required=False, choices=['auto', 'openssl', 'cryptography'], default='auto', type='str'),
         ),
         required_one_of=(
             ['account_key_src', 'account_key_content', 'private_key_src', 'private_key_content'],
@@ -113,6 +112,7 @@ def main():
         ),
         supports_check_mode=False,
     )
+    set_crypto_backend(module)
 
     if not module.params.get('validate_certs'):
         module.warn(warning='Disabling certificate validation for communications with ACME endpoint. ' +
@@ -122,22 +122,8 @@ def main():
     try:
         account = ACMEAccount(module)
         # Load certificate
-        certificate_lines = []
-        try:
-            with open(module.params.get('certificate'), "rt") as f:
-                header_line_count = 0
-                for line in f:
-                    if line.startswith('-----'):
-                        header_line_count += 1
-                        if header_line_count == 2:
-                            # If certificate file contains other certs appended
-                            # (like intermediate certificates), ignore these.
-                            break
-                        continue
-                    certificate_lines.append(line.strip())
-        except Exception as err:
-            raise ModuleFailException("cannot load certificate file: %s" % to_native(err), exception=traceback.format_exc())
-        certificate = nopad_b64(base64.b64decode(''.join(certificate_lines)))
+        certificate = pem_to_der(module.params.get('certificate'))
+        certificate = nopad_b64(certificate)
         # Construct payload
         payload = {
             'certificate': certificate
@@ -152,24 +138,11 @@ def main():
             endpoint = account.directory['revokeCert']
         # Get hold of private key (if available) and make sure it comes from disk
         private_key = module.params.get('private_key_src')
-        if module.params.get('private_key_content') is not None:
-            fd, tmpsrc = tempfile.mkstemp()
-            module.add_cleanup_file(tmpsrc)  # Ansible will delete the file on exit
-            f = os.fdopen(fd, 'wb')
-            try:
-                f.write(module.params.get('private_key_content').encode('utf-8'))
-                private_key = tmpsrc
-            except Exception as err:
-                try:
-                    f.close()
-                except Exception as e:
-                    pass
-                raise ModuleFailException("failed to create temporary content file: %s" % to_native(err), exception=traceback.format_exc())
-            f.close()
+        private_key_content = module.params.get('private_key_content')
         # Revoke certificate
-        if private_key:
+        if private_key or private_key_content:
             # Step 1: load and parse private key
-            error, private_key_data = account.parse_account_key(private_key)
+            error, private_key_data = account.parse_key(private_key, private_key_content)
             if error:
                 raise ModuleFailException("error while parsing private key: %s" % error)
             # Step 2: sign revokation request with private key
@@ -177,8 +150,7 @@ def main():
                 "alg": private_key_data['alg'],
                 "jwk": private_key_data['jwk'],
             }
-            result, info = account.send_signed_request(endpoint, payload, key=private_key,
-                                                       key_data=private_key_data, jws_header=jws_header)
+            result, info = account.send_signed_request(endpoint, payload, key_data=private_key_data, jws_header=jws_header)
         else:
             # Step 1: get hold of account URI
             changed = account.init_account(

lib/ansible/utils/module_docs_fragments/acme.py

@@ -8,9 +8,18 @@ class ModuleDocFragment(object):
 
     # Standard files documentation fragment
     DOCUMENTATION = """
+description:
+  - "Note that if a new enough version of the C(cryptography) library
+     is available (see Requirements for details), it will be used
+     instead of the C(openssl) binary. This can be explicitly disabled
+     or enabled with the C(select_crypto_backend) option. Note that using
+     the C(openssl) binary will be slower and less secure, as private key
+     contents always have to be stored on disk (see
+     C(account_key_content))."
 requirements:
   - "python >= 2.6"
-  - openssl
+  - "either openssl, ..."
+  - "... or L(cryptography,https://cryptography.io/) >= 1.5"
 options:
   account_key_src:
     description:
@@ -32,6 +41,10 @@ options:
          important private key — it can be used to change the account key,
          or to revoke your certificates without knowing their private keys
          —, this might not be acceptable."
+      - "In case C(cryptography) is used, the content is not written into a
+         temporary file. It can still happen that it is written to disk by
+         Ansible in the process of moving the module with its argument to
+         the node where it is executed."
     version_added: "2.5"
   acme_version:
     description:
@@ -64,5 +77,20 @@ options:
          for example when testing against a local Pebble server."
     type: bool
     default: 'yes'
-    version_added: 2.5
+    version_added: "2.5"
+  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(openssl)."
+      - "If set to C(openssl), will try to use the C(openssl) binary."
+      - "If set to C(cryptography), will try to use the
+         L(cryptography,https://cryptography.io/) library."
+    type: str
+    default: 'auto'
+    choices:
+      - auto
+      - cryptography
+      - openssl
+    version_added: "2.7"
 """

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

@@ -0,0 +1,157 @@
+- name: Generate account key
+  command: openssl ecparam -name prime256v1 -genkey -out {{ output_dir }}/accountkey.pem
+
+- name: Parse account key (to ease debugging some test failures)
+  command: openssl ec -in {{ output_dir }}/accountkey.pem -noout -text
+
+- name: Do not try to create account
+  acme_account:
+    select_crypto_backend: "{{ select_crypto_backend }}"
+    account_key_src: "{{ output_dir }}/accountkey.pem"
+    acme_version: 2
+    acme_directory: https://{{ acme_host }}:14000/dir
+    validate_certs: no
+    state: present
+    allow_creation: no
+  ignore_errors: yes
+  register: account_not_created
+
+- name: Create it now
+  acme_account:
+    select_crypto_backend: "{{ select_crypto_backend }}"
+    account_key_src: "{{ output_dir }}/accountkey.pem"
+    acme_version: 2
+    acme_directory: https://{{ acme_host }}:14000/dir
+    validate_certs: no
+    state: present
+    allow_creation: yes
+    terms_agreed: yes
+    contact:
+    - mailto:example@example.org
+  register: account_created
+
+- name: Change email address
+  acme_account:
+    select_crypto_backend: "{{ select_crypto_backend }}"
+    account_key_content: "{{ lookup('file', output_dir ~ '/accountkey.pem') }}"
+    acme_version: 2
+    acme_directory: https://{{ acme_host }}:14000/dir
+    validate_certs: no
+    state: present
+    # allow_creation: no
+    contact:
+    - mailto:example@example.com
+  register: account_modified
+
+- name: Change email address (idempotent)
+  acme_account:
+    select_crypto_backend: "{{ select_crypto_backend }}"
+    account_key_src: "{{ output_dir }}/accountkey.pem"
+    acme_version: 2
+    acme_directory: https://{{ acme_host }}:14000/dir
+    validate_certs: no
+    state: present
+    # allow_creation: no
+    contact:
+    - mailto:example@example.com
+  register: account_modified_idempotent
+
+- name: Generate new account key
+  command: openssl ecparam -name secp384r1 -genkey -out {{ output_dir }}/accountkey2.pem
+
+- name: Parse account key (to ease debugging some test failures)
+  command: openssl ec -in {{ output_dir }}/accountkey2.pem -noout -text
+
+# Note that pebble has no change key endpoint implemented yet!
+# When it has (and the container was updated), uncomment the
+# uncomment the following tests, and delete the ones below the
+# out-commented ones.
+
+# - name: Change account key
+#   acme_account:
+#     select_crypto_backend: "{{ select_crypto_backend }}"
+#     account_key_src: "{{ output_dir }}/accountkey.pem"
+#     acme_version: 2
+#     acme_directory: https://{{ acme_host }}:14000/dir
+#     validate_certs: no
+#     new_account_key_src: "{{ output_dir }}/accountkey2.pem"
+#     state: changed_key
+#     contact:
+#     - mailto:example@example.com
+#   register: account_change_key
+
+# - name: Deactivate account
+#   acme_account:
+#     select_crypto_backend: "{{ select_crypto_backend }}"
+#     account_key_src: "{{ output_dir }}/accountkey2.pem"
+#     acme_version: 2
+#     acme_directory: https://{{ acme_host }}:14000/dir
+#     validate_certs: no
+#     state: absent
+#   register: account_deactivate
+
+# - name: Deactivate account (idempotent)
+#   acme_account:
+#     select_crypto_backend: "{{ select_crypto_backend }}"
+#     account_key_src: "{{ output_dir }}/accountkey2.pem"
+#     acme_version: 2
+#     acme_directory: https://{{ acme_host }}:14000/dir
+#     validate_certs: no
+#     state: absent
+#   register: account_deactivate_idempotent
+
+# - name: Do not try to create account II
+#   acme_account:
+#     select_crypto_backend: "{{ select_crypto_backend }}"
+#     account_key_src: "{{ output_dir }}/accountkey2.pem"
+#     acme_version: 2
+#     acme_directory: https://{{ acme_host }}:14000/dir
+#     validate_certs: no
+#     state: present
+#     allow_creation: no
+#   ignore_errors: yes
+#   register: account_not_created_2
+
+# - name: Do not try to create account III
+#   acme_account:
+#     select_crypto_backend: "{{ select_crypto_backend }}"
+#     account_key_src: "{{ output_dir }}/accountkey.pem"
+#     acme_version: 2
+#     acme_directory: https://{{ acme_host }}:14000/dir
+#     validate_certs: no
+#     state: present
+#     allow_creation: no
+#   ignore_errors: yes
+#   register: account_not_created_3
+
+- name: Deactivate account
+  acme_account:
+    select_crypto_backend: "{{ select_crypto_backend }}"
+    account_key_src: "{{ output_dir }}/accountkey.pem"
+    acme_version: 2
+    acme_directory: https://{{ acme_host }}:14000/dir
+    validate_certs: no
+    state: absent
+  register: account_deactivate
+
+- name: Deactivate account (idempotent)
+  acme_account:
+    select_crypto_backend: "{{ select_crypto_backend }}"
+    account_key_src: "{{ output_dir }}/accountkey.pem"
+    acme_version: 2
+    acme_directory: https://{{ acme_host }}:14000/dir
+    validate_certs: no
+    state: absent
+  register: account_deactivate_idempotent
+
+- name: Do not try to create account II
+  acme_account:
+    select_crypto_backend: "{{ select_crypto_backend }}"
+    account_key_src: "{{ output_dir }}/accountkey.pem"
+    acme_version: 2
+    acme_directory: https://{{ acme_host }}:14000/dir
+    validate_certs: no
+    state: present
+    allow_creation: no
+  ignore_errors: yes
+  register: account_not_created_2

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

@@ -1,152 +1,31 @@
 ---
 - block:
-  - name: Generate account key
-    command: openssl ecparam -name prime256v1 -genkey -out {{ output_dir }}/accountkey.pem
+  - name: Running tests with OpenSSL backend
+    include_tasks: impl.yml
+    vars:
+      select_crypto_backend: openssl
 
-  - name: Parse account key (to ease debugging some test failures)
-    command: openssl ec -in {{ output_dir }}/accountkey.pem -noout -text
-
-  - name: Do not try to create account
-    acme_account:
-      account_key_src: "{{ output_dir }}/accountkey.pem"
-      acme_version: 2
-      acme_directory: https://{{ acme_host }}:14000/dir
-      validate_certs: no
-      state: present
-      allow_creation: no
-    ignore_errors: yes
-    register: account_not_created
-
-  - name: Create it now
-    acme_account:
-      account_key_src: "{{ output_dir }}/accountkey.pem"
-      acme_version: 2
-      acme_directory: https://{{ acme_host }}:14000/dir
-      validate_certs: no
-      state: present
-      allow_creation: yes
-      terms_agreed: yes
-      contact:
-      - mailto:example@example.org
-    register: account_created
-
-  - name: Change email address
-    acme_account:
-      account_key_content: "{{ lookup('file', output_dir ~ '/accountkey.pem') }}"
-      acme_version: 2
-      acme_directory: https://{{ acme_host }}:14000/dir
-      validate_certs: no
-      state: present
-      # allow_creation: no
-      contact:
-      - mailto:example@example.com
-    register: account_modified
-
-  - name: Change email address (idempotent)
-    acme_account:
-      account_key_src: "{{ output_dir }}/accountkey.pem"
-      acme_version: 2
-      acme_directory: https://{{ acme_host }}:14000/dir
-      validate_certs: no
-      state: present
-      # allow_creation: no
-      contact:
-      - mailto:example@example.com
-    register: account_modified_idempotent
-
-  - name: Generate new account key
-    command: openssl ecparam -name secp384r1 -genkey -out {{ output_dir }}/accountkey2.pem
-
-  - name: Parse account key (to ease debugging some test failures)
-    command: openssl ec -in {{ output_dir }}/accountkey2.pem -noout -text
-
-# Note that pebble has no change key endpoint implemented yet!
-# When it has (and the container was updated), uncomment the
-# uncomment the following tests, and delete the ones below the
-# out-commented ones.
-
-#  - name: Change account key
-#    acme_account:
-#      account_key_src: "{{ output_dir }}/accountkey.pem"
-#      acme_version: 2
-#      acme_directory: https://{{ acme_host }}:14000/dir
-#      validate_certs: no
-#      new_account_key_src: "{{ output_dir }}/accountkey2.pem"
-#      state: changed_key
-#      contact:
-#      - mailto:example@example.com
-#    register: account_change_key
-
-#  - name: Deactivate account
-#    acme_account:
-#      account_key_src: "{{ output_dir }}/accountkey2.pem"
-#      acme_version: 2
-#      acme_directory: https://{{ acme_host }}:14000/dir
-#      validate_certs: no
-#      state: absent
-#    register: account_deactivate
-
-#  - name: Deactivate account (idempotent)
-#    acme_account:
-#      account_key_src: "{{ output_dir }}/accountkey2.pem"
-#      acme_version: 2
-#      acme_directory: https://{{ acme_host }}:14000/dir
-#      validate_certs: no
-#      state: absent
-#    register: account_deactivate_idempotent
-
-#  - name: Do not try to create account II
-#    acme_account:
-#      account_key_src: "{{ output_dir }}/accountkey2.pem"
-#      acme_version: 2
-#      acme_directory: https://{{ acme_host }}:14000/dir
-#      validate_certs: no
-#      state: present
-#      allow_creation: no
-#    ignore_errors: yes
-#    register: account_not_created_2
+  - import_tasks: ../tests/validate.yml
 
-#  - name: Do not try to create account III
-#    acme_account:
-#      account_key_src: "{{ output_dir }}/accountkey.pem"
-#      acme_version: 2
-#      acme_directory: https://{{ acme_host }}:14000/dir
-#      validate_certs: no
-#      state: present
-#      allow_creation: no
-#    ignore_errors: yes
-#    register: account_not_created_3
+  # Old 0.9.8 versions have insufficient CLI support for signing with EC keys
+  when: openssl_version.stdout is version('1.0.0', '>=')
 
-  - name: Deactivate account
-    acme_account:
-      account_key_src: "{{ output_dir }}/accountkey.pem"
-      acme_version: 2
-      acme_directory: https://{{ acme_host }}:14000/dir
-      validate_certs: no
+- name: Remove output directory
+  file:
+    path: "{{ output_dir }}"
     state: absent
-    register: account_deactivate
 
-  - name: Deactivate account (idempotent)
-    acme_account:
-      account_key_src: "{{ output_dir }}/accountkey.pem"
-      acme_version: 2
-      acme_directory: https://{{ acme_host }}:14000/dir
-      validate_certs: no
-      state: absent
-    register: account_deactivate_idempotent
+- name: Re-create output directory
+  file:
+    path: "{{ output_dir }}"
+    state: directory
 
-  - name: Do not try to create account II
-    acme_account:
-      account_key_src: "{{ output_dir }}/accountkey.pem"
-      acme_version: 2
-      acme_directory: https://{{ acme_host }}:14000/dir
-      validate_certs: no
-      state: present
-      allow_creation: no
-    ignore_errors: yes
-    register: account_not_created_2
+- block:
+  - name: Running tests with cryptography backend
+    include_tasks: impl.yml
+    vars:
+      select_crypto_backend: cryptography
 
   - import_tasks: ../tests/validate.yml
 
-  # Old 0.9.8 versions have insufficient CLI support for signing with EC keys
-  when: openssl_version.stdout is version('1.0.0', '>=')
+  when: cryptography_version.stdout is version('1.5', '>=')

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

@@ -0,0 +1,240 @@
+---
+## SET UP ACCOUNT KEYS ########################################################################
+- name: Create ECC256 account key
+  command: openssl ecparam -name prime256v1 -genkey -out {{ output_dir }}/account-ec256.pem
+- name: Create ECC384 account key
+  command: openssl ecparam -name secp384r1 -genkey -out {{ output_dir }}/account-ec384.pem
+- name: Create RSA-2048 account key
+  command: openssl genrsa -out {{ output_dir }}/account-rsa2048.pem 2048
+## SET UP ACCOUNTS ############################################################################
+- name: Make sure ECC256 account hasn't been created yet
+  acme_account:
+    select_crypto_backend: "{{ select_crypto_backend }}"
+    acme_version: 2
+    acme_directory: https://{{ acme_host }}:14000/dir
+    validate_certs: no
+    account_key_src: "{{ output_dir }}/account-ec256.pem"
+    state: absent
+- name: Create ECC384 account
+  acme_account:
+    select_crypto_backend: "{{ select_crypto_backend }}"
+    acme_version: 2
+    acme_directory: https://{{ acme_host }}:14000/dir
+    validate_certs: no
+    account_key_content: "{{ lookup('file', output_dir ~ '/account-ec384.pem') }}"
+    state: present
+    allow_creation: yes
+    terms_agreed: yes
+    contact:
+    - mailto:example@example.org
+    - mailto:example@example.com
+- name: Create RSA-2048 account
+  acme_account:
+    select_crypto_backend: "{{ select_crypto_backend }}"
+    acme_version: 2
+    acme_directory: https://{{ acme_host }}:14000/dir
+    validate_certs: no
+    account_key_src: "{{ output_dir }}/account-rsa2048.pem"
+    state: present
+    allow_creation: yes
+    terms_agreed: yes
+    contact: []
+## OBTAIN CERTIFICATES ########################################################################
+- name: Obtain cert 1
+  include_tasks: obtain-cert.yml
+  vars:
+    certgen_title: Certificate 1
+    certificate_name: cert-1
+    key_type: rsa
+    rsa_bits: 2048
+    subject_alt_name: "DNS:example.com"
+    subject_alt_name_critical: no
+    account_key: account-ec256
+    challenge: http-01
+    modify_account: yes
+    deactivate_authzs: no
+    force: no
+    remaining_days: 10
+    terms_agreed: yes
+    account_email: "example@example.org"
+- name: Obtain cert 2
+  include_tasks: obtain-cert.yml
+  vars:
+    certgen_title: Certificate 2
+    certificate_name: cert-2
+    key_type: ec256
+    subject_alt_name: "DNS:*.example.com,DNS:example.com"
+    subject_alt_name_critical: yes
+    account_key: account-ec384
+    challenge: dns-01
+    modify_account: no
+    deactivate_authzs: yes
+    force: no
+    remaining_days: 10
+    terms_agreed: no
+    account_email: ""
+- name: Obtain cert 3
+  include_tasks: obtain-cert.yml
+  vars:
+    certgen_title: Certificate 3
+    certificate_name: cert-3
+    key_type: ec384
+    subject_alt_name: "DNS:*.example.com,DNS:example.org,DNS:t1.example.com"
+    subject_alt_name_critical: no
+    account_key_content: "{{ lookup('file', output_dir ~ '/account-rsa2048.pem') }}"
+    challenge: dns-01
+    modify_account: no
+    deactivate_authzs: no
+    force: no
+    remaining_days: 10
+    terms_agreed: no
+    account_email: ""
+- name: Obtain cert 4
+  include_tasks: obtain-cert.yml
+  vars:
+    certgen_title: Certificate 4
+    certificate_name: cert-4
+    key_type: rsa
+    rsa_bits: 2048
+    subject_alt_name: "DNS:example.com,DNS:t1.example.com,DNS:test.t2.example.com,DNS:example.org,DNS:test.example.org"
+    subject_alt_name_critical: no
+    account_key: account-rsa2048
+    challenge: http-01
+    modify_account: no
+    deactivate_authzs: yes
+    force: yes
+    remaining_days: 10
+    terms_agreed: no
+    account_email: ""
+- name: Obtain cert 5
+  include_tasks: obtain-cert.yml
+  vars:
+    certgen_title: Certificate 5, Iteration 1/4
+    certificate_name: cert-5
+    key_type: ec521
+    subject_alt_name: "DNS:t2.example.com"
+    subject_alt_name_critical: no
+    account_key: account-ec384
+    challenge: http-01
+    modify_account: no
+    deactivate_authzs: yes
+    force: yes
+    remaining_days: 10
+    terms_agreed: no
+    account_email: ""
+- name: Obtain cert 5 (should not, since already there and valid for more than 10 days)
+  include_tasks: obtain-cert.yml
+  vars:
+    certgen_title: Certificate 5, Iteration 2/4
+    certificate_name: cert-5
+    key_type: ec521
+    subject_alt_name: "DNS:t2.example.com"
+    subject_alt_name_critical: no
+    account_key: account-ec384
+    challenge: http-01
+    modify_account: no
+    deactivate_authzs: yes
+    force: no
+    remaining_days: 10
+    terms_agreed: no
+    account_email: ""
+- set_fact:
+    cert_5_recreate_1: "{{ challenge_data is changed }}"
+- name: Obtain cert 5 (should again by less days)
+  include_tasks: obtain-cert.yml
+  vars:
+    certgen_title: Certificate 5, Iteration 3/4
+    certificate_name: cert-5
+    key_type: ec521
+    subject_alt_name: "DNS:t2.example.com"
+    subject_alt_name_critical: no
+    account_key: account-ec384
+    challenge: http-01
+    modify_account: no
+    deactivate_authzs: yes
+    force: yes
+    remaining_days: 1000
+    terms_agreed: no
+    account_email: ""
+- set_fact:
+    cert_5_recreate_2: "{{ challenge_data is changed }}"
+- name: Obtain cert 5 (should again by force)
+  include_tasks: obtain-cert.yml
+  vars:
+    certgen_title: Certificate 5, Iteration 4/4
+    certificate_name: cert-5
+    key_type: ec521
+    subject_alt_name: "DNS:t2.example.com"
+    subject_alt_name_critical: no
+    account_key_content: "{{ lookup('file', output_dir ~ '/account-ec384.pem') }}"
+    challenge: http-01
+    modify_account: no
+    deactivate_authzs: yes
+    force: yes
+    remaining_days: 10
+    terms_agreed: no
+    account_email: ""
+- set_fact:
+    cert_5_recreate_3: "{{ challenge_data is changed }}"
+- name: Obtain cert 6
+  include_tasks: obtain-cert.yml
+  vars:
+    certgen_title: Certificate 6
+    certificate_name: cert-6
+    key_type: rsa
+    rsa_bits: 2048
+    subject_alt_name: "DNS:example.org"
+    subject_alt_name_critical: no
+    account_key: account-ec256
+    challenge: tls-alpn-01
+    modify_account: yes
+    deactivate_authzs: no
+    force: no
+    remaining_days: 10
+    terms_agreed: yes
+    account_email: "example@example.org"
+## DISSECT CERTIFICATES #######################################################################
+# Make sure certificates are valid. Root certificate for Pebble equals the chain certificate.
+- name: Verifying cert 1
+  command: openssl verify -CAfile "{{ output_dir }}/cert-1-chain.pem" "{{ output_dir }}/cert-1.pem"
+  ignore_errors: yes
+  register: cert_1_valid
+- name: Verifying cert 2
+  command: openssl verify -CAfile "{{ output_dir }}/cert-2-chain.pem" "{{ output_dir }}/cert-2.pem"
+  ignore_errors: yes
+  register: cert_2_valid
+- name: Verifying cert 3
+  command: openssl verify -CAfile "{{ output_dir }}/cert-3-chain.pem" "{{ output_dir }}/cert-3.pem"
+  ignore_errors: yes
+  register: cert_3_valid
+- name: Verifying cert 4
+  command: openssl verify -CAfile "{{ output_dir }}/cert-4-chain.pem" "{{ output_dir }}/cert-4.pem"
+  ignore_errors: yes
+  register: cert_4_valid
+- name: Verifying cert 5
+  command: openssl verify -CAfile "{{ output_dir }}/cert-5-chain.pem" "{{ output_dir }}/cert-5.pem"
+  ignore_errors: yes
+  register: cert_5_valid
+- name: Verifying cert 6
+  command: openssl verify -CAfile "{{ output_dir }}/cert-6-chain.pem" "{{ output_dir }}/cert-6.pem"
+  ignore_errors: yes
+  register: cert_6_valid
+# Dump certificate info
+- name: Dumping cert 1
+  command: openssl x509 -in "{{ output_dir }}/cert-1.pem" -noout -text
+  register: cert_1_text
+- name: Dumping cert 2
+  command: openssl x509 -in "{{ output_dir }}/cert-2.pem" -noout -text
+  register: cert_2_text
+- name: Dumping cert 3
+  command: openssl x509 -in "{{ output_dir }}/cert-3.pem" -noout -text
+  register: cert_3_text
+- name: Dumping cert 4
+  command: openssl x509 -in "{{ output_dir }}/cert-4.pem" -noout -text
+  register: cert_4_text
+- name: Dumping cert 5
+  command: openssl x509 -in "{{ output_dir }}/cert-5.pem" -noout -text
+  register: cert_5_text
+- name: Dumping cert 6
+  command: openssl x509 -in "{{ output_dir }}/cert-6.pem" -noout -text
+  register: cert_6_text

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

@@ -1,243 +1,31 @@
 ---
 - block:
-  ## SET UP ACCOUNT KEYS ########################################################################
-  - name: Create ECC256 account key
-    command: openssl ecparam -name prime256v1 -genkey -out {{ output_dir }}/account-ec256.pem
-  - name: Create ECC384 account key
-    command: openssl ecparam -name secp384r1 -genkey -out {{ output_dir }}/account-ec384.pem
-  - name: Create RSA-2048 account key
-    command: openssl genrsa -out {{ output_dir }}/account-rsa2048.pem 2048
-  ## SET UP ACCOUNTS ############################################################################
-  - name: Make sure ECC256 account hasn't been created yet
-    acme_account:
-      acme_version: 2
-      acme_directory: https://{{ acme_host }}:14000/dir
-      validate_certs: no
-      account_key_src: "{{ output_dir }}/account-ec256.pem"
-      state: absent
-  - name: Create ECC384 account
-    acme_account:
-      acme_version: 2
-      acme_directory: https://{{ acme_host }}:14000/dir
-      validate_certs: no
-      account_key_content: "{{ lookup('file', output_dir ~ '/account-ec384.pem') }}"
-      state: present
-      allow_creation: yes
-      terms_agreed: yes
-      contact:
-      - mailto:example@example.org
-      - mailto:example@example.com
-  - name: Create RSA-2048 account
-    acme_account:
-      acme_version: 2
-      acme_directory: https://{{ acme_host }}:14000/dir
-      validate_certs: no
-      account_key_src: "{{ output_dir }}/account-rsa2048.pem"
-      state: present
-      allow_creation: yes
-      terms_agreed: yes
-      contact: []
-  ## OBTAIN CERTIFICATES ########################################################################
-  - name: Obtain cert 1
-    include_tasks: obtain-cert.yml
-    vars:
-      certgen_title: Certificate 1
-      certificate_name: cert-1
-      key_type: rsa
-      rsa_bits: 2048
-      subject_alt_name: "DNS:example.com"
-      subject_alt_name_critical: no
-      account_key: account-ec256
-      challenge: http-01
-      modify_account: yes
-      deactivate_authzs: no
-      force: no
-      remaining_days: 10
-      terms_agreed: yes
-      account_email: "example@example.org"
-  - name: Obtain cert 2
-    include_tasks: obtain-cert.yml
-    vars:
-      certgen_title: Certificate 2
-      certificate_name: cert-2
-      key_type: ec256
-      subject_alt_name: "DNS:*.example.com,DNS:example.com"
-      subject_alt_name_critical: yes
-      account_key: account-ec384
-      challenge: dns-01
-      modify_account: no
-      deactivate_authzs: yes
-      force: no
-      remaining_days: 10
-      terms_agreed: no
-      account_email: ""
-  - name: Obtain cert 3
-    include_tasks: obtain-cert.yml
-    vars:
-      certgen_title: Certificate 3
-      certificate_name: cert-3
-      key_type: ec384
-      subject_alt_name: "DNS:*.example.com,DNS:example.org,DNS:t1.example.com"
-      subject_alt_name_critical: no
-      account_key_content: "{{ lookup('file', output_dir ~ '/account-rsa2048.pem') }}"
-      challenge: dns-01
-      modify_account: no
-      deactivate_authzs: no
-      force: no
-      remaining_days: 10
-      terms_agreed: no
-      account_email: ""
-  - name: Obtain cert 4
-    include_tasks: obtain-cert.yml
-    vars:
-      certgen_title: Certificate 4
-      certificate_name: cert-4
-      key_type: rsa
-      rsa_bits: 2048
-      subject_alt_name: "DNS:example.com,DNS:t1.example.com,DNS:test.t2.example.com,DNS:example.org,DNS:test.example.org"
-      subject_alt_name_critical: no
-      account_key: account-rsa2048
-      challenge: http-01
-      modify_account: no
-      deactivate_authzs: yes
-      force: yes
-      remaining_days: 10
-      terms_agreed: no
-      account_email: ""
-  - name: Obtain cert 5
-    include_tasks: obtain-cert.yml
-    vars:
-      certgen_title: Certificate 5, Iteration 1/4
-      certificate_name: cert-5
-      key_type: ec521
-      subject_alt_name: "DNS:t2.example.com"
-      subject_alt_name_critical: no
-      account_key: account-ec384
-      challenge: http-01
-      modify_account: no
-      deactivate_authzs: yes
-      force: yes
-      remaining_days: 10
-      terms_agreed: no
-      account_email: ""
-  - name: Obtain cert 5 (should not, since already there and valid for more than 10 days)
-    include_tasks: obtain-cert.yml
-    vars:
-      certgen_title: Certificate 5, Iteration 2/4
-      certificate_name: cert-5
-      key_type: ec521
-      subject_alt_name: "DNS:t2.example.com"
-      subject_alt_name_critical: no
-      account_key: account-ec384
-      challenge: http-01
-      modify_account: no
-      deactivate_authzs: yes
-      force: no
-      remaining_days: 10
-      terms_agreed: no
-      account_email: ""
-  - set_fact:
-      cert_5_recreate_1: "{{ challenge_data is changed }}"
-  - name: Obtain cert 5 (should again by less days)
-    include_tasks: obtain-cert.yml
-    vars:
-      certgen_title: Certificate 5, Iteration 3/4
-      certificate_name: cert-5
-      key_type: ec521
-      subject_alt_name: "DNS:t2.example.com"
-      subject_alt_name_critical: no
-      account_key: account-ec384
-      challenge: http-01
-      modify_account: no
-      deactivate_authzs: yes
-      force: yes
-      remaining_days: 1000
-      terms_agreed: no
-      account_email: ""
-  - set_fact:
-      cert_5_recreate_2: "{{ challenge_data is changed }}"
-  - name: Obtain cert 5 (should again by force)
-    include_tasks: obtain-cert.yml
-    vars:
-      certgen_title: Certificate 5, Iteration 4/4
-      certificate_name: cert-5
-      key_type: ec521
-      subject_alt_name: "DNS:t2.example.com"
-      subject_alt_name_critical: no
-      account_key_content: "{{ lookup('file', output_dir ~ '/account-ec384.pem') }}"
-      challenge: http-01
-      modify_account: no
-      deactivate_authzs: yes
-      force: yes
-      remaining_days: 10
-      terms_agreed: no
-      account_email: ""
-  - set_fact:
-      cert_5_recreate_3: "{{ challenge_data is changed }}"
-  - name: Obtain cert 6
-    include_tasks: obtain-cert.yml
+  - name: Running tests with OpenSSL backend
+    include_tasks: impl.yml
     vars:
-      certgen_title: Certificate 6
-      certificate_name: cert-6
-      key_type: rsa
-      rsa_bits: 2048
-      subject_alt_name: "DNS:example.org"
-      subject_alt_name_critical: no
-      account_key: account-ec256
-      challenge: tls-alpn-01
-      modify_account: yes
-      deactivate_authzs: no
-      force: no
-      remaining_days: 10
-      terms_agreed: yes
-      account_email: "example@example.org"
-  ## DISSECT CERTIFICATES #######################################################################
-  # Make sure certificates are valid. Root certificate for Pebble equals the chain certificate.
-  - name: Verifying cert 1
-    command: openssl verify -CAfile "{{ output_dir }}/cert-1-chain.pem" "{{ output_dir }}/cert-1.pem"
-    ignore_errors: yes
-    register: cert_1_valid
-  - name: Verifying cert 2
-    command: openssl verify -CAfile "{{ output_dir }}/cert-2-chain.pem" "{{ output_dir }}/cert-2.pem"
-    ignore_errors: yes
-    register: cert_2_valid
-  - name: Verifying cert 3
-    command: openssl verify -CAfile "{{ output_dir }}/cert-3-chain.pem" "{{ output_dir }}/cert-3.pem"
-    ignore_errors: yes
-    register: cert_3_valid
-  - name: Verifying cert 4
-    command: openssl verify -CAfile "{{ output_dir }}/cert-4-chain.pem" "{{ output_dir }}/cert-4.pem"
-    ignore_errors: yes
-    register: cert_4_valid
-  - name: Verifying cert 5
-    command: openssl verify -CAfile "{{ output_dir }}/cert-5-chain.pem" "{{ output_dir }}/cert-5.pem"
-    ignore_errors: yes
-    register: cert_5_valid
-  - name: Verifying cert 6
-    command: openssl verify -CAfile "{{ output_dir }}/cert-6-chain.pem" "{{ output_dir }}/cert-6.pem"
-    ignore_errors: yes
-    register: cert_6_valid
-  # Dump certificate info
-  - name: Dumping cert 1
-    command: openssl x509 -in "{{ output_dir }}/cert-1.pem" -noout -text
-    register: cert_1_text
-  - name: Dumping cert 2
-    command: openssl x509 -in "{{ output_dir }}/cert-2.pem" -noout -text
-    register: cert_2_text
-  - name: Dumping cert 3
-    command: openssl x509 -in "{{ output_dir }}/cert-3.pem" -noout -text
-    register: cert_3_text
-  - name: Dumping cert 4
-    command: openssl x509 -in "{{ output_dir }}/cert-4.pem" -noout -text
-    register: cert_4_text
-  - name: Dumping cert 5
-    command: openssl x509 -in "{{ output_dir }}/cert-5.pem" -noout -text
-    register: cert_5_text
-  - name: Dumping cert 6
-    command: openssl x509 -in "{{ output_dir }}/cert-6.pem" -noout -text
-    register: cert_6_text
+      select_crypto_backend: openssl
 
   - import_tasks: ../tests/validate.yml
 
   # Old 0.9.8 versions have insufficient CLI support for signing with EC keys
   when: openssl_version.stdout is version('1.0.0', '>=')
+
+- name: Remove output directory
+  file:
+    path: "{{ output_dir }}"
+    state: absent
+
+- name: Re-create output directory
+  file:
+    path: "{{ output_dir }}"
+    state: directory
+
+- block:
+  - name: Running tests with cryptography backend
+    include_tasks: impl.yml
+    vars:
+      select_crypto_backend: cryptography
+
+  - import_tasks: ../tests/validate.yml
+
+  when: cryptography_version.stdout is version('1.5', '>=')

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

@@ -0,0 +1,89 @@
+---
+## SET UP ACCOUNT KEYS ########################################################################
+- name: Create ECC256 account key
+  command: openssl ecparam -name prime256v1 -genkey -out {{ output_dir }}/account-ec256.pem
+- name: Create ECC384 account key
+  command: openssl ecparam -name secp384r1 -genkey -out {{ output_dir }}/account-ec384.pem
+- name: Create RSA-2048 account key
+  command: openssl genrsa -out {{ output_dir }}/account-rsa2048.pem 2048
+## CREATE ACCOUNTS AND OBTAIN CERTIFICATES ####################################################
+- name: Obtain cert 1
+  include_tasks: obtain-cert.yml
+  vars:
+    certgen_title: Certificate 1 for revocation
+    certificate_name: cert-1
+    key_type: rsa
+    rsa_bits: 2048
+    subject_alt_name: "DNS:example.com"
+    subject_alt_name_critical: no
+    account_key_content: "{{ lookup('file', output_dir ~ '/account-ec256.pem') }}"
+    challenge: http-01
+    modify_account: yes
+    deactivate_authzs: no
+    force: no
+    remaining_days: 10
+    terms_agreed: yes
+    account_email: "example@example.org"
+- name: Obtain cert 2
+  include_tasks: obtain-cert.yml
+  vars:
+    certgen_title: Certificate 2 for revocation
+    certificate_name: cert-2
+    key_type: ec256
+    subject_alt_name: "DNS:*.example.com"
+    subject_alt_name_critical: yes
+    account_key: account-ec384
+    challenge: dns-01
+    modify_account: yes
+    deactivate_authzs: yes
+    force: no
+    remaining_days: 10
+    terms_agreed: yes
+    account_email: "example@example.org"
+- name: Obtain cert 3
+  include_tasks: obtain-cert.yml
+  vars:
+    certgen_title: Certificate 3 for revocation
+    certificate_name: cert-3
+    key_type: ec384
+    subject_alt_name: "DNS:t1.example.com"
+    subject_alt_name_critical: no
+    account_key: account-rsa2048
+    challenge: dns-01
+    modify_account: yes
+    deactivate_authzs: no
+    force: no
+    remaining_days: 10
+    terms_agreed: yes
+    account_email: "example@example.org"
+## REVOKE CERTIFICATES ########################################################################
+- name: Revoke certificate 1 via account key
+  acme_certificate_revoke:
+    select_crypto_backend: "{{ select_crypto_backend }}"
+    account_key_src: "{{ output_dir }}/account-ec256.pem"
+    certificate: "{{ output_dir }}/cert-1.pem"
+    acme_version: 2
+    acme_directory: https://{{ acme_host }}:14000/dir
+    validate_certs: no
+  ignore_errors: yes
+  register: cert_1_revoke
+- name: Revoke certificate 2 via certificate private key
+  acme_certificate_revoke:
+    select_crypto_backend: "{{ select_crypto_backend }}"
+    private_key_src: "{{ output_dir }}/cert-2.key"
+    certificate: "{{ output_dir }}/cert-2.pem"
+    acme_version: 2
+    acme_directory: https://{{ acme_host }}:14000/dir
+    validate_certs: no
+  ignore_errors: yes
+  register: cert_2_revoke
+- name: Revoke certificate 3 via account key (fullchain)
+  acme_certificate_revoke:
+    select_crypto_backend: "{{ select_crypto_backend }}"
+    account_key_content: "{{ lookup('file', output_dir ~ '/account-rsa2048.pem') }}"
+    certificate: "{{ output_dir }}/cert-3-fullchain.pem"
+    acme_version: 2
+    acme_directory: https://{{ acme_host }}:14000/dir
+    validate_certs: no
+  ignore_errors: yes
+  register: cert_3_revoke

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

@@ -1,92 +1,31 @@
 ---
 - block:
-  ## SET UP ACCOUNT KEYS ########################################################################
-  - name: Create ECC256 account key
-    command: openssl ecparam -name prime256v1 -genkey -out {{ output_dir }}/account-ec256.pem
-  - name: Create ECC384 account key
-    command: openssl ecparam -name secp384r1 -genkey -out {{ output_dir }}/account-ec384.pem
-  - name: Create RSA-2048 account key
-    command: openssl genrsa -out {{ output_dir }}/account-rsa2048.pem 2048
-  ## CREATE ACCOUNTS AND OBTAIN CERTIFICATES ####################################################
-  - name: Obtain cert 1
-    include_tasks: obtain-cert.yml
+  - name: Running tests with OpenSSL backend
+    include_tasks: impl.yml
     vars:
-      certgen_title: Certificate 1 for revocation
-      certificate_name: cert-1
-      key_type: rsa
-      rsa_bits: 2048
-      subject_alt_name: "DNS:example.com"
-      subject_alt_name_critical: no
-      account_key_content: "{{ lookup('file', output_dir ~ '/account-ec256.pem') }}"
-      challenge: http-01
-      modify_account: yes
-      deactivate_authzs: no
-      force: no
-      remaining_days: 10
-      terms_agreed: yes
-      account_email: "example@example.org"
-  - name: Obtain cert 2
-    include_tasks: obtain-cert.yml
-    vars:
-      certgen_title: Certificate 2 for revocation
-      certificate_name: cert-2
-      key_type: ec256
-      subject_alt_name: "DNS:*.example.com"
-      subject_alt_name_critical: yes
-      account_key: account-ec384
-      challenge: dns-01
-      modify_account: yes
-      deactivate_authzs: yes
-      force: no
-      remaining_days: 10
-      terms_agreed: yes
-      account_email: "example@example.org"
-  - name: Obtain cert 3
-    include_tasks: obtain-cert.yml
-    vars:
-      certgen_title: Certificate 3 for revocation
-      certificate_name: cert-3
-      key_type: ec384
-      subject_alt_name: "DNS:t1.example.com"
-      subject_alt_name_critical: no
-      account_key: account-rsa2048
-      challenge: dns-01
-      modify_account: yes
-      deactivate_authzs: no
-      force: no
-      remaining_days: 10
-      terms_agreed: yes
-      account_email: "example@example.org"
-  ## REVOKE CERTIFICATES ########################################################################
-  - name: Revoke certificate 1 via account key
-    acme_certificate_revoke:
-      account_key_src: "{{ output_dir }}/account-ec256.pem"
-      certificate: "{{ output_dir }}/cert-1.pem"
-      acme_version: 2
-      acme_directory: https://{{ acme_host }}:14000/dir
-      validate_certs: no
-    ignore_errors: yes
-    register: cert_1_revoke
-  - name: Revoke certificate 2 via certificate private key
-    acme_certificate_revoke:
-      private_key_src: "{{ output_dir }}/cert-2.key"
-      certificate: "{{ output_dir }}/cert-2.pem"
-      acme_version: 2
-      acme_directory: https://{{ acme_host }}:14000/dir
-      validate_certs: no
-    ignore_errors: yes
-    register: cert_2_revoke
-  - name: Revoke certificate 3 via account key (fullchain)
-    acme_certificate_revoke:
-      account_key_content: "{{ lookup('file', output_dir ~ '/account-rsa2048.pem') }}"
-      certificate: "{{ output_dir }}/cert-3-fullchain.pem"
-      acme_version: 2
-      acme_directory: https://{{ acme_host }}:14000/dir
-      validate_certs: no
-    ignore_errors: yes
-    register: cert_3_revoke
+      select_crypto_backend: openssl
 
   - import_tasks: ../tests/validate.yml
 
   # Old 0.9.8 versions have insufficient CLI support for signing with EC keys
   when: openssl_version.stdout is version('1.0.0', '>=')
+
+- name: Remove output directory
+  file:
+    path: "{{ output_dir }}"
+    state: absent
+
+- name: Re-create output directory
+  file:
+    path: "{{ output_dir }}"
+    state: directory
+
+- block:
+  - name: Running tests with cryptography backend
+    include_tasks: impl.yml
+    vars:
+      select_crypto_backend: cryptography
+
+  - import_tasks: ../tests/validate.yml
+
+  when: cryptography_version.stdout is version('1.5', '>=')

test/integration/targets/setup_acme/tasks/obtain-cert.yml

@@ -22,6 +22,7 @@
 ## ACME STEP 1 ################################################################################
 - name: ({{ certgen_title }}) Obtain cert, step 1
   acme_certificate:
+    select_crypto_backend: "{{ select_crypto_backend }}"
     acme_version: 2
     acme_directory: https://{{ acme_host }}:14000/dir
     validate_certs: no
@@ -41,6 +42,7 @@
   when: account_key_content is not defined
 - name: ({{ certgen_title }}) Obtain cert, step 1 (using account key data)
   acme_certificate:
+    select_crypto_backend: "{{ select_crypto_backend }}"
     acme_version: 2
     acme_directory: https://{{ acme_host }}:14000/dir
     validate_certs: no
@@ -96,6 +98,7 @@
 ## ACME STEP 2 ################################################################################
 - name: ({{ certgen_title }}) Obtain cert, step 2
   acme_certificate:
+    select_crypto_backend: "{{ select_crypto_backend }}"
     acme_version: 2
     acme_directory: https://{{ acme_host }}:14000/dir
     validate_certs: no
@@ -115,6 +118,7 @@
   when: challenge_data is changed and account_key_content is not defined
 - name: ({{ certgen_title }}) Obtain cert, step 2 (using account key data)
   acme_certificate:
+    select_crypto_backend: "{{ select_crypto_backend }}"
     acme_version: 2
     acme_directory: https://{{ acme_host }}:14000/dir
     validate_certs: no