class ExtKeyUsage(Extention):
value = [
base.ObjectId('extKeyUsage'),
base.Boolean(True),
base.OctetString(
"\x30\x10\x06\x08\x2B\x06\x01\x05\x05\x07\x03\x04\x06\x04\x55\x1D\x25\x00"
)
]
class ContentInfo(base.Sequence):
optional = [base.OctetString]
infinite = True
value = [base.ObjectId('data', name='data')]
class AttKeyPref(Attribute):
value = [base.ObjectId('id-aa-encrypKeyPref'), base.Set([IssuerAndSerial(tag=0xA0)])]
def setup(self, value):
self.value[1].value[0].setup(value.value)
class AttSMIMECaps(Attribute):
value = [base.ObjectId('smimeCapabilities'), base.Set([SMIMECaps()])]
def __init__(self, algo, val=None):
value = [base.ObjectId(algo)]
if val is not None:
value += [base.Integer(val)]
base.Sequence.__init__(self, value)
class AttMSEncryptionCert(Attribute):
value = [base.ObjectId('Microsoft_Encryption_Cert'), base.Set([IssuerAndSerial()])]
def setup(self, value):
self.value[1].value[0].setup(value.value)
class AttMessageDigest(Attribute):
value = [base.ObjectId('messageDigest'), base.Set([base.OctetString()])]
class AttSigningTime(Attribute):
value = [base.ObjectId('signing-time'), base.Set([base.UTCTime()])]
class AttContentType(Attribute):
value = [base.ObjectId('contentType'), base.Set([base.ObjectId('data')])]
class Attribute(base.Sequence):
value = [base.ObjectId(), base.Set()]
def setup(self, value):
self.value[1].value[0].setup(value)
def __init__(self):
self.contentType = base.ObjectId('signedData', name='contentType', check=True)
self.signedData = SignedData()
self.content = base.Optional(SignedData, [self.signedData], name='data', infinite=True)
base.Sequence.__init__(self, [self.contentType, self.content])
class KeyUsage(Extention):
value = [
base.ObjectId('keyUsage'),
base.Boolean(True),
base.OctetString("\x03\x02\x01\xFE")
]
class Extention(base.Sequence):
value = [
base.ObjectId(name='extId'),
base.Boolean(name='critical'),
base.OctetString(name='value')
]
def __init__(self, algo='sha256WithRSAEncryption', **kwargs):
base.Sequence.__init__(self,
[base.ObjectId(algo, name="id"),
base.Null()], **kwargs)
def __init__(self, objId, stringClass, default):
self.holder = base.Sequence(
[base.ObjectId(objId), stringClass(default)])
base.Set.__init__(self, [self.holder], name=objId)
