Python cryptography.x509 模块，CertificateSigningRequest() 实例源码

def from_cryptography(cls, crypto_req):
        """
        Construct based on a ``cryptography`` *crypto_req*.

        :param crypto_req: A ``cryptography`` X.509 certificate signing request
        :type crypto_req: ``cryptography.x509.CertificateSigningRequest``

        :rtype: PKey

        .. versionadded:: 17.1.0
        """
        if not isinstance(crypto_req, x509.CertificateSigningRequest):
            raise TypeError("Must be a certificate signing request")

        req = cls()
        req._req = crypto_req._x509_req
        return req

def from_cryptography(cls, crypto_req):
        """
        Construct based on a ``cryptography`` *crypto_req*.

        :param crypto_req: A ``cryptography`` X.509 certificate signing request
        :type crypto_req: ``cryptography.x509.CertificateSigningRequest``

        :rtype: PKey

        .. versionadded:: 17.1.0
        """
        if not isinstance(crypto_req, x509.CertificateSigningRequest):
            raise TypeError("Must be a certificate signing request")

        req = cls()
        req._req = crypto_req._x509_req
        return req

def generate_csr(self, private_key, subject_name, extensions=None):
        """Generate certificate signing request.

        Args:
            private_key: Private key
            subject_name (x509.Name): Subject name
            extensions
        Returns: x509.CertificateSigningRequest

        """
        builder = x509.CertificateSigningRequestBuilder(
            subject_name, [] if extensions is None else extensions)

        return builder.sign(
            private_key, self.sign_hash_algorithm, default_backend())

def test_convert_to_cryptography_key(self):
        req = load_certificate_request(
            FILETYPE_PEM, cleartextCertificateRequestPEM
        )
        crypto_req = req.to_cryptography()
        assert isinstance(crypto_req, x509.CertificateSigningRequest)

def to_cryptography(self):
        """
        Export as a ``cryptography`` certificate signing request.

        :rtype: ``cryptography.x509.CertificateSigningRequest``

        .. versionadded:: 17.1.0
        """
        from cryptography.hazmat.backends.openssl.x509 import (
            _CertificateSigningRequest
        )
        backend = _get_backend()
        return _CertificateSigningRequest(backend, self._req)

def to_cryptography(self):
        """
        Export as a ``cryptography`` certificate signing request.

        :rtype: ``cryptography.x509.CertificateSigningRequest``

        .. versionadded:: 17.1.0
        """
        from cryptography.hazmat.backends.openssl.x509 import (
            _CertificateSigningRequest
        )
        backend = _get_backend()
        return _CertificateSigningRequest(backend, self._req)