https://ontology.unifiedcyberontology.org/uco/types/Hash
A hash is a grouping of characteristics unique to the result of applying a mathematical algorithm that maps data of arbitrary size to a bit string (the 'hash') and is a one-way function, that is, a function which is practically infeasible to invert. This is commonly used for integrity checking of data. [based on https://en.wikipedia.org/wiki/Cryptographic_hash_function]
Instances of types:Hash can have the following properties:
| PROPERTY | TYPE | DESCRIPTION | RANGE |
|---|---|---|---|
| From class owl:Thing | |||
| core:informalType | owl:DatatypeProperty | Informal Type serves as a parent property for string-valued properties meant to describe a type without implementing a class design. This property hierarchy supports a balancing point between semantic specificity and operational agility. The known benefits of describing types rather than implementing them include swift extensibility of some existing, or possibly non-existing, subclass hierarchy in UCO without requiring training in ontological development, taxonomic specification, or OWL, SHACL, or RDF maintenance logistics. The known detractions of using string-literals for type descriptions include that used vocabularies may require careful maintenance among data-sharing parties; that vocabularies require independent logistics (external to UCO) for providing definitions (i.e., dictionary-style semantics) to string-literals chosen; and that string-literals cannot by themselves encode hierarchical structure or entailments, such as the informal device type string 'ExamplePhone 8 P4321' entailing 'ExamplePhone 8', 'ExamplePhone', or 'ExamplePhone models discontinued in 2020'. Usage of Informal Type to house strings should be weighed against usage of classes when classes are available, and should periodically be reviewed for potential additions to UCO's class hierarchy or downstream extensions thereof. | owl:Thing |
| types:threadNextItem | owl:ObjectProperty | The link to a next item in a thread. | owl:Thing |
| types:threadPreviousItem | owl:ObjectProperty | A direct link to a previous item in a thread. | owl:Thing |
By the associated SHACL property shapes, instances of types:Hash can have the following properties:
PROPERTY |
PROPERTY TYPE |
DESCRIPTION |
MIN COUNT |
MAX COUNT |
LOCAL RANGE |
GLOBAL RANGE |
|
|---|---|---|---|---|---|---|---|
| types:Hash | |||||||
| types:hashMethod | owl:DatatypeProperty |
A particular cryptographic hashing method (e.g., MD5).
|
1 | 1 |
xsd:string
|
owl:Thing | |
| types:hashValue | owl:DatatypeProperty |
A cryptographic hash value.
|
1 | 1 |
xsd:hexBinary
|
xsd:hexBinary
|
|
@prefix core: <https://ontology.unifiedcyberontology.org/uco/core/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix sh: <http://www.w3.org/ns/shacl#> .
@prefix types: <https://ontology.unifiedcyberontology.org/uco/types/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
types:Hash a owl:Class,
sh:NodeShape ;
rdfs:label "Hash"@en ;
rdfs:comment "A hash is a grouping of characteristics unique to the result of applying a mathematical algorithm that maps data of arbitrary size to a bit string (the 'hash') and is a one-way function, that is, a function which is practically infeasible to invert. This is commonly used for integrity checking of data. [based on https://en.wikipedia.org/wiki/Cryptographic_hash_function]"@en ;
rdfs:subClassOf core:UcoInherentCharacterizationThing ;
sh:property [ sh:datatype xsd:hexBinary ;
sh:maxCount 1 ;
sh:minCount 1 ;
sh:nodeKind sh:Literal ;
sh:path types:hashValue ],
[ sh:datatype xsd:string ;
sh:message "As of UCO 1.4.0, the datatype to use for types:hashMethod should be xsd:string. Not using xsd:string will be an error in UCO 2.0.0." ;
sh:path types:hashMethod ;
sh:severity sh:Warning ],
[ sh:maxCount 1 ;
sh:minCount 1 ;
sh:nodeKind sh:Literal ;
sh:path types:hashMethod ],
types:Hash-hashMethod-in-shape ;
sh:targetClass types:Hash .