Cryptographic Cloud Storage: a proposal a proposal Seny Kamara, - - PowerPoint PPT Presentation

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Mar 29, 2023 402 likes •452 views

Cryptographic Cloud Storage: a proposal a proposal Seny Kamara, Kristin Lauter Cryptography Group Microsoft Research Applications/Scenarios Secure Outsourcing for Business Electronic Health Records Interactive Scientific Publishing

SLIDE 1

Cryptographic Cloud Storage: a proposal a proposal

Seny Kamara, Kristin Lauter Cryptography Group Microsoft Research

SLIDE 2

Applications/Scenarios

Secure Outsourcing for Business Electronic Health Records Interactive Scientific Publishing Electronic discovery Electronic discovery Regulatory compliance Geographic restrictions Subpoenas Data retention and destruction

SLIDE 3

Cryptographic Components

Searchable Encryption (SSE)

[Song, Wagner and Perrig 2000] [Goh 2003], [Chang and Mitzenmacher 2005] and [Curtmola, Garay, Kamara, Ostrovsky 2006]

Proofs of Storage

[Ateniese, Burns, et al. 2007], [Juels, Kaliski 2007], [Shacham and Waters 2008], [Ateniese, Kamara, Katz 2009], [Erway, et al. 2009]

Attribute-Based Encryption Attribute-Based Encryption

[Sahai,Waters 2005], … , Multi-authority [Chase 2007], [Chase, Chow 2009]

Authorization Language (SecPAL)

[LaMacchia et al 2007]

SLIDE 4

DP TG CG

2. Upload encrypted data
4. Obtain search tokens
5. Retrieve documents
1. upload data

Cloud Enterprise CG

3. Obtain credentials

Partner

DP = Data Processor
TG= Token Generator
CG=Credential Generation

SSE: Symmetric Searchable Encryption Third party queries the TG for tokens, then uses them to obtain encrypted documents from the cloud