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CIDFINMA_spec_Z.zed
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CIDFINMA_spec_Z.zed
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Client Identifying Data (CID) Requirements Specification for banks in Switzerland
Language: Z Notation
Developed By Serge (Siarhei Vinahradau, [email protected]
Specification, further referred to as FINMA:
https://www.finma.ch/de/~/media/finma/dokumente/rundschreiben-archiv/finma-rs200821---30-06-2017.pdf
Specification requirements:
-CID data classification (FINMA 10*)
DATACATEGORY
CIDCATEGORIES
METADATA
- CID data owner (FINMA 13*)
ENTITY
DOMAIN
- all nodes with CID data stored should be recorded (FINMA 15*)
CIDSTORINGNODESAUDITLOG
- CID protection risks are country specific (FINMA 20*)
COUNTRY
- no node outside Switzerland should have unprotected CID data stored (FINMA 20*)
CONTENT
NODE
AddNodeData
- CID data accessed by users from outside Switzerland has to be protected (FINMA 20*)
AccesNodeData
- role and function based authorisation system in place (FINMA 22*)
ROLE
USER
DOMAIN
- List of users with bulk CID access (FINMA 34*)
BulkCIDAccessUsersList
- logs for bulk CID access (FINMA 40*)
CIDBULKLOG
- an internal employee has to be responsible for the compliance of outsourced CID activities (FINMA 50*)
DOMAIN
USER
AddUser
AddInternalUser
AddExternalUser
\begin{zsection} \SECTION Specification \parents~standard\_toolkit , zeves\_toolkit
\end{zsection}
\begin{zed}DATACATEGORY ::= DIRECT | INDIRECT | POTENTIALLYDIRECT | PROTECTED | NONCID
\end{zed}
\begin{zed}CIDCATEGORIES == \{ DIRECT , INDIRECT , POTENTIALLYDIRECT \}
\end{zed}
\begin{zed}COUNTRY ::= SWITZERLAND | UK | USA | GERMANY
\end{zed}
\begin{zed}METADATA ::= CUSTOMERNAME | CUSTOMERADDRESS | ISVIPCUSTOMER
\end{zed}
\begin{zed}CONTENT ::= MUSTERMANN | SEESTRASSE | YES | NO | XXXXX
\end{zed}
\begin{zed}ENTITY ::= ENTITY1 | ENTITY2 | ENTITY3
\end{zed}
\begin{zed}USER ::= USER1 | USER2 | USER3
\end{zed}
\begin{zed}ROLE ::= ROLEGUICIDUSER | ROLEGUIUSER | ROLEBULKCID | ROLEBULK | ROLE1
\end{zed}
\begin{zed}CIDROLES == \{ ROLEGUICIDUSER , ROLEBULKCID \}
\end{zed}
\begin{zed}NODEID ::= NODE1 | NODE2 | NODE3
\end{zed}
\begin{schema}{NODE}
nodeId : NODEID \\
nodeCountry : COUNTRY \\
nodeDataCategories : METADATA \pfun DATACATEGORY \\
nodeDataContents : METADATA \pfun CONTENT \\
nodeMetadata : \power METADATA \\
nodeContentsMetadata : \power METADATA
\where
nodeCountry = SWITZERLAND \lor ( \forall c : \ran nodeDataCategories @ c \notin CIDCATEGORIES ) \\
\dom nodeDataContents \subseteq \dom nodeDataCategories \\
nodeMetadata = \dom nodeDataCategories \\
nodeContentsMetadata = \dom nodeDataContents
\end{schema}
\begin{schema}{DOMAIN}
dataClassification : METADATA \pfun DATACATEGORY \\
dataOwner : METADATA \pfun ENTITY \\
roles : ROLE \rel METADATA \\
userAccessRigths : USER \rel ROLE \\
teams : ENTITY \rel USER \\
internalUsers : \power USER \\
externalUsers : \power USER \\
classificationMetadata : \power METADATA \\
dataOwnerMetadata : \power METADATA \\
rolesRoles : \power ROLE \\
teamsTeams : \power ENTITY
\where
\forall u : USER @ \lnot ( u \in internalUsers \land u \in externalUsers ) \\
\forall u : \dom userAccessRigths @ u \in \ran teams \\
\forall u : \dom userAccessRigths @ u \in internalUsers \lor u \in externalUsers \\
\forall u : externalUsers @ \lnot ( userAccessRigths \limg \{ u \} \rimg \cap CIDROLES \neq \emptyset \land teams \limg \dom ( teams \rres \{ u \} ) \rimg \cap internalUsers =~\emptyset ) \\
classificationMetadata = \dom dataClassification \\
dataOwnerMetadata = \dom dataOwner \\
rolesRoles = \dom roles \\
\dom dataClassification \subseteq \dom dataOwner \\
teamsTeams = \dom teams \\
\# ( \dom dataClassification ) < 6 \\
\# ( \dom dataOwner ) < 6
\end{schema}
\begin{schema}{CIDSTORINGNODESAUDITLOG}
cidStoringNodesIds : \power NODEID \\
NODE
\where
\# ( cidStoringNodesIds ) < 6\\
\forall cidDataCategory : \ran nodeDataCategories @ cidDataCategory \in CIDCATEGORIES \implies nodeId \in cidStoringNodesIds
\end{schema}
\begin{schema}{CIDBULKLOG}
cidBulkAccess : USER \rel NODEID \\
cidBulkAccessUsers : \power USER
\where
cidBulkAccessUsers = \dom cidBulkAccess \\
\# ( cidBulkAccess ) < 6
\end{schema}
\begin{schema}{InitDomain}
DOMAIN~' \\
NODE~' \\
CIDSTORINGNODESAUDITLOG~' \\
CIDBULKLOG~'
\where
dataOwnerMetadata' =~\emptyset \\
classificationMetadata' =~\emptyset \\
userAccessRigths' =~\emptyset \\
teams' =~\emptyset \\
internalUsers' =~\emptyset \\
externalUsers' =~\emptyset \\
nodeMetadata' =~\emptyset \\
cidStoringNodesIds' =~\emptyset \\
nodeId' = NODE1 \\
cidBulkAccess' =~\emptyset
\end{schema}
\begin{schema}{AddRole}
\Delta DOMAIN \\
role? : ROLE \\
metadata? : METADATA
\where
roles' = roles \cup \{ ( role? , metadata? ) \} \\
dataClassification' = dataClassification \\
teams' = teams \\
internalUsers' = internalUsers \\
externalUsers' = externalUsers \\
dataOwner' = dataOwner \\
userAccessRigths' = userAccessRigths
\end{schema}
\begin{schema}{AddUser}
\Delta DOMAIN \\
user? : USER \\
entity? : ENTITY
\where
teams' = teams \cup \{ ( entity? , user? ) \} \\
userAccessRigths' = userAccessRigths \\
roles' = roles \\
internalUsers' = internalUsers \\
externalUsers' = externalUsers \\
dataClassification' = dataClassification \\
dataOwner' = dataOwner
\end{schema}
\begin{schema}{AddExternalUser}
\Delta DOMAIN \\
user? : USER
\where
externalUsers' = externalUsers \cup \{ user? \} \\
internalUsers' = internalUsers \\
teams' = teams \\
userAccessRigths' = userAccessRigths \\
roles' = roles \\
dataClassification' = dataClassification \\
dataOwner' = dataOwner
\end{schema}
\begin{schema}{AddInternalUser}
\Delta DOMAIN \\
user? : USER
\where
internalUsers' = internalUsers \cup \{ user? \} \\
externalUsers' = externalUsers \\
teams' = teams \\
userAccessRigths' = userAccessRigths \\
roles' = roles \\
dataClassification' = dataClassification \\
dataOwner' = dataOwner
\end{schema}
\begin{schema}{AddUserAccessRight}
\Delta DOMAIN \\
user? : USER \\
role? : ROLE
\where
userAccessRigths' = userAccessRigths \cup \{ ( user? , role? ) \} \\
teams' = teams \\
internalUsers' = internalUsers \\
externalUsers' = externalUsers \\
roles' = roles \\
dataClassification' = dataClassification \\
dataOwner' = dataOwner
\end{schema}
\begin{schema}{RemoveUserAccessRight}
\Delta DOMAIN \\
user? : USER \\
role? : ROLE
\where
userAccessRigths' = userAccessRigths \setminus \{ ( user? , role? ) \} \\
roles' = roles \\
teams' = teams \\
internalUsers' = internalUsers \\
externalUsers' = externalUsers \\
dataClassification' = dataClassification \\
dataOwner' = dataOwner
\end{schema}
\begin{schema}{AddNodeData}
\Delta NODE \\
\Delta CIDSTORINGNODESAUDITLOG \\
\Xi DOMAIN \\
nodeIdInput? : NODEID \\
nodeCountryInput? : COUNTRY \\
nodeMetadataInput? : METADATA \\
nodeDataContentInput? : CONTENT
\where
nodeCountry' = nodeCountryInput? \land nodeId' = nodeIdInput? \land ( ( nodeCountryInput? = SWITZERLAND \land ( dataClassification~nodeMetadataInput? ) \in CIDCATEGORIES \land cidStoringNodesIds' = cidStoringNodesIds \cup \{ nodeIdInput? \} \land nodeDataContents' = nodeDataContents \oplus \{ nodeMetadataInput? \mapsto nodeDataContentInput? \} \land nodeDataCategories' = nodeDataCategories \oplus \{ nodeMetadataInput? \mapsto ( dataClassification~nodeMetadataInput? ) \} ) \lor ( ( dataClassification~nodeMetadataInput? ) \notin CIDCATEGORIES \land cidStoringNodesIds' = cidStoringNodesIds \land nodeDataContents' = nodeDataContents \oplus \{ nodeMetadataInput? \mapsto nodeDataContentInput? \} \land nodeDataCategories' = nodeDataCategories \oplus \{ nodeMetadataInput? \mapsto ( dataClassification~nodeMetadataInput? ) \} ) \lor ( nodeCountryInput? \neq SWITZERLAND \land ( dataClassification~nodeMetadataInput? ) \in CIDCATEGORIES \land cidStoringNodesIds' = cidStoringNodesIds \land nodeDataContents' = nodeDataContents \oplus \{ nodeMetadataInput? \mapsto XXXXX \} \land nodeDataCategories' = nodeDataCategories \oplus \{ nodeMetadataInput? \mapsto PROTECTED \} ) )
\end{schema}
\begin{schema}{AccessNode}
\Xi NODE \\
\Xi DOMAIN \\
user? : USER \\
userCountry? : COUNTRY \\
nodeId? : NODEID \\
accessNodeMetadata? : METADATA \\
contentOutput! : \power CONTENT
\where
nodeId? = nodeId \land accessNodeMetadata? \in roles \limg ( userAccessRigths \limg \{ user? \} \rimg ) \rimg \land ( ( nodeDataCategories \limg \{ accessNodeMetadata? \} \rimg \subseteq CIDCATEGORIES \land userCountry? \neq SWITZERLAND \land contentOutput! = \{ XXXXX \} ) \lor ( ( nodeDataCategories \limg \{ accessNodeMetadata? \} \rimg \cap CIDCATEGORIES =~\emptyset \lor userCountry? = SWITZERLAND ) \land contentOutput! = nodeDataContents \limg \{ accessNodeMetadata? \} \rimg ) )
\end{schema}
\begin{schema}{AccessBulk}
\Xi DOMAIN \\
\Xi NODE \\
\Delta CIDBULKLOG \\
user? : USER \\
nodeId? : NODEID \\
userCountry? : COUNTRY \\
contentOutput! : \power CONTENT
\where
( ROLEBULKCID \in userAccessRigths \limg \{ user? \} \rimg \land userCountry? = SWITZERLAND \land \ran nodeDataCategories \cap CIDCATEGORIES \neq \emptyset \land cidBulkAccess' = cidBulkAccess \cap \{ ( user? , nodeId? ) \} \land contentOutput! = \ran nodeDataContents \land nodeId? = nodeId ) \lor ( ( ROLEBULK \in userAccessRigths \limg \{ user? \} \rimg \lor ROLEBULKCID \in userAccessRigths \limg \{ user? \} \rimg ) \land cidBulkAccess' = cidBulkAccess \land \ran nodeDataCategories \cap CIDCATEGORIES =~\emptyset \land contentOutput! = \ran nodeDataContents \land nodeId? = nodeId )
\end{schema}
\begin{schema}{AssignDataOwner}
\Delta DOMAIN \\
metadata? : METADATA \\
dataOwnerInput? : ENTITY
\where
dataOwner' = dataOwner \oplus \{ metadata? \mapsto dataOwnerInput? \} \\
roles' = roles \\
userAccessRigths' = userAccessRigths
\end{schema}
\begin{schema}{ClassifyDataCategory}
\Delta DOMAIN \\
metadata? : METADATA \\
dataCategory? : DATACATEGORY
\where
dataClassification' = dataClassification \oplus \{ metadata? \mapsto dataCategory? \} \\
roles' = roles \\
userAccessRigths' = userAccessRigths
\end{schema}
\begin{zed}ImplementDataClassification \defs AssignDataOwner \land ClassifyDataCategory
\end{zed}
\begin{schema}{RecycleData}
\Delta DOMAIN \\
metadata? : METADATA
\where
metadata? \in dataOwnerMetadata \\
metadata? \in classificationMetadata \\
dataClassification' = \{ metadata? \} \ndres dataClassification \\
dataOwner' = \{ metadata? \} \ndres dataOwner \\
roles' = roles \\
teams' = teams \\
userAccessRigths' = userAccessRigths
\end{schema}
\begin{schema}{BulkCIDAccessUsersList}
\Xi DOMAIN \\
\Xi NODE \\
BulkCIDAccessUsersList! : \power USER
\where
BulkCIDAccessUsersList! = \dom ( userAccessRigths \rres \{ ROLEBULKCID \} )
\end{schema}