verification.py 文件源码

def pkey_from_cryptography_key(crypto_key):
    '''
    Modified version of `OpenSSL.crypto.PKey.from_cryptography_key()` of
    PyOpenSSL which also accepts EC Keys
    (cf. https://github.com/pyca/pyopenssl/pull/636).
    '''
    pkey = PKey()
    if not isinstance(crypto_key, (rsa.RSAPublicKey, rsa.RSAPrivateKey,
                                   dsa.DSAPublicKey, dsa.DSAPrivateKey,
                                   ec.EllipticCurvePublicKey,
                                   ec.EllipticCurvePrivateKey)):
        raise TypeError("Unsupported key type")

    pkey._pkey = crypto_key._evp_pkey
    if isinstance(crypto_key, (rsa.RSAPublicKey, dsa.DSAPublicKey,
                               ec.EllipticCurvePublicKey)):
        pkey._only_public = True
    pkey._initialized = True
    return pkey