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Nt1310 Unit 1 Use Case Diagram

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Use Case Diagram:
In this use case diagram we are used 2 actors and 5 use cases. Here the data owner and data consumer are the actors. And the remaining are use cases(upload files, attribute based key generation, secret key, master key, access data). How it works means, when the data owner wants to upload a file based on attributes in the form of encrypted data. Then only the file will be uploaded in the outsourced . and data consumer wants to access an outsourced file. The data consumer access some access policies then only he downloads the cipher text and it converts into a plaintext.

Class diagram
In the class diagram first the data owner wants to upload the file into the outsource decryption. The attributes of data owner are filename, file size, public key, secret key, master key the only the file will be uploaded in the cloud server. And the data owner consists of methods file upload(), file size(), key gen(), …show more content…
And the cloud server consists of methods key values(), and read(). How the data consumer want to access that encrypted file means first the data consumer know the filename and key value then only he downloads the encrypted file and convert into plaintext.

Collaborate diagram:
In the collaboration diagram it consists of links, objects and messages. In this we have data owner, data consumer, domain authority and also database. Here database means cloud server. Data owner will upload the file in the database. Domain authority controls the data owner and data consumer. Data owner wants to upload the file in the database based on attributes. And the data consumer will access that encrypted file in the database. And he downloads the encrypted file and it converts into simple text.

Sequence

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