pynetdicom.pdu_primitives.UserIdentityNegotiation¶
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class
pynetdicom.pdu_primitives.
UserIdentityNegotiation
¶ Representation of the User Identity Negotiation primitive.
Allows peer AEs to exchange generic application information.
The SOP Class Common Extended Negotiation is optional and there may only be a single SOPClassCommonExtendedNegotiation item for each available SOP Class UID.
In general, a User Identity Negotiation request that is accepted will result in Association establishment and possibly a server response if requested and supported by the peer. If a server response is requested but not received then the Requestor must decide how to proceed. An Association rejected due to an authorisation failure will be indicated using Rejection Permanent with a Source of “DICOM UL service provided (ACSE related function)”.
How the Acceptor handles authentication is to be implemented by the end-user and is outside the scope of the DICOM standard.
A-ASSOCIATE-RQ | user_identity_type | positive_response_requested | primary_field | secondary_field
A-ASSOCIATE-AC The server_response parameter is required when a response to the User Identity Negotiation request is to be issued (although this depends on whether or not this is supported by the Acceptor).
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user_identity_type
¶ A-ASSOCIATE-RQ only. One of the following values:
1 - Username as string in UTF-8
2 - Username as string in UTF-8 and passcode
3 - Kerberos Service ticket
4 - SAML Assertion
5 - JSON Web Token
- Type
int or None
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positive_response_requested
¶ A-ASSOCIATE-RQ only. True when requesting a response, False otherwise (default is False)
- Type
bool
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primary_field
¶ A-ASSOCIATE-RQ only. Contains either the username, Kerberos Service ticket or SAML assertion depending on user_identity_type.
- Type
bytes or None
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secondary_field
¶ A-ASSOCIATE-RQ only. Only required if the user_identity_type is 2, when it should contain the passcode as a bytes object, None otherwise
- Type
bytes or None
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server_response
¶ A-ASSOCIATE-AC only. Shall contain the Kerberos Service ticket or SAML response if the user_identity_type in the Request was 3 or 4. Shall be None if user_identity_type was 1 or 2.
- Type
bytes or None
Examples
>>> from pynetdicom.pdu_primitives import UserIdentityNegotiation >>> item = UserIdentityNegotiation() >>> item.user_identity_type = 2 >>> item.positive_response_requested = True >>> item.primary_field = b'username' >>> item.secondary_field = b'password'
References
DICOM Standard, Part 7, Annex D.3.3.7
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__init__
()¶ Initialize self. See help(type(self)) for accurate signature.
Methods
__init__
()Initialize self.
Convert the primitive to a PDU item ready to be encoded.
Attributes
Return Positive Response Requested.
Return Primary Field.
Return the Secondary Field.
Return the Server Response.
Return the User Identity Type.
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from_primitive
()¶ Convert the primitive to a PDU item ready to be encoded.
- Returns
item – pdu_items.UserIdentitySubItemAC
- Return type
pdu_items.UserIdentitySubItemRQ or
- Raises
ValueError – If server_response is None and user_identity_type or primary_field are None
ValueError – If server_response is None and user_identity_type is 2 and secondary_field is None
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property
positive_response_requested
Return Positive Response Requested.
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property
primary_field
Return Primary Field.
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property
secondary_field
Return the Secondary Field.
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property
server_response
Return the Server Response.
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property
user_identity_type
Return the User Identity Type.
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