23     key = None  variable in Certificate
24     def __init__(self, cert, key):  argument
26         self.key = key
32         return crypto.dump_privatekey(crypto.FILETYPE_PEM, self.key)
48             key = crypto.load_privatekey(crypto.FILETYPE_PEM, data)
49             return Certificate(cert, key)
52     def create(cn, issuer=None, key=None, keysize=2048, digest="sha256",  argument
55         if key is None:
56             key = crypto.PKey()
57             key.generate_key(crypto.TYPE_RSA, keysize)
60         cert.set_pubkey(key)
74         signing_key = key if issuer is None else issuer.key
77         return Certificate(cert, key)
82     a_sha1 = Certificate.create("Root A", key=a.key, digest="sha1")
84     a_to_b = Certificate.create("Root A", b, a.key)
85     b_to_a = Certificate.create("Root B", a, b.key)
88     intermediate_b = Certificate.create("intermediate", b, intermediate_a.key)