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Secure Computation on Encrypted Data

Fact Sheet

Reporting

Results

Objective

Recent trends in computing have prompted users and organizations to store an increasingly large amount of sensitive data at third party locations in the cloud outside of their direct control. Storing data remotely poses an acute security threat as these data are outside our control and could potentially be accessed by untrusted parties. Indeed, the reality of these threats have been borne out by the Snowden leaks and hundreds of data breaches each year. In order to protect our data, we will need to encrypt it.

Functional encryption is a novel paradigm for public-key encryption that enables both fine-grained access control and selective computation on encrypted data, as is necessary to protect big, complex data in the cloud. Functional encryption also enables searches on encrypted travel records and surveillance video as well as medical studies on encrypted medical records in a privacy-preserving manner; we can give out restricted secret keys that reveal only the outcome of specific searches and tests. These mechanisms allow us to maintain public safety without compromising on civil liberties, and to facilitate medical break-throughs without compromising on individual privacy.

The goals of the aSCEND project are (i) to design pairing and lattice-based functional encryption that are more efficient and ultimately viable in practice; and (ii) to obtain a richer understanding of expressive functional encryption schemes and to push the boundaries from encrypting data to encrypting software. My long-term vision is the ubiquitous use of functional encryption to secure our data and our computation, just as public-key encryption is widely used today to secure our communication. Realizing this vision requires new advances in the foundations of functional encryption, which is the target of this project.

Programme(s)

H2020-EU.1.1. - EXCELLENT SCIENCE - European Research Council (ERC)

Topic(s)

ERC-StG-2014 - ERC Starting Grant

Call for proposal

ERC-2014-STG

See other projects for this call

Funding Scheme

ERC-STG - Starting Grant

Leaflet | Map data © OpenStreetMap contributors, Credit: EC-GISCO, © EuroGeographics for the administrative boundaries

Host institution

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS

Address

Rue Michel Ange 3
75794 Paris

France

Activity type

Research Organisations

EU Contribution

€ 1 253 892,50

Website

Contact the organisation

Beneficiaries (1)

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CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS

France

EU Contribution

€ 1 253 892,50

Project information

aSCEND

Grant agreement ID: 639554

Status

Ongoing project

Start date

1 June 2015
End date

31 May 2021

Funded under:

H2020-EU.1.1.

Overall budget:

€ 1 253 892,50
EU contribution

€ 1 253 892,50

Hosted by:

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS

France

Periodic Reporting for period 2 - aSCEND (Secure Computation on Encrypted Data)

Reporting period: 2016-12-01 to 2018-05-31

Summary of the context and overall objectives of the project

Recent trends in computing have prompted users and organizations to
store an increasingly large amount of sensitive data at third party
locations in the cloud outside of their direct control. Storing data
remotely poses an acute security threat as these data are outside our
control and could potentially be accessed by untrusted parties.
Indeed, the reality of these threats have been borne out by the
Snowden leaks and hundreds of data breaches each year. In order to
protect our data, we will need to encrypt it.

Functional encryption is a novel paradigm for public-key encryption
that enables both fine-grained access control and selective
computation on encrypted data, as is necessary to protect big, complex
data in the cloud. Functional encryption also enables searches on
encrypted travel records and surveillance video as well as medical
studies on encrypted medical records in a privacy-preserving manner;
we can give out restricted secret keys that reveal only the
outcome of specific searches and tests. These mechanisms allow us to
maintain public safety without compromising on civil liberties, and to
facilitate medical break-throughs without compromising on individual
privacy.

The goals of the aSCEND project are (i) to design pairing and
lattice-based functional encryption that are more *efficient* and
ultimately viable in practice; and (ii) to obtain a richer
understanding of *expressive* functional encryption schemes and to push
the boundaries from encrypting data to encrypting software. My
long-term vision is the ubiquitous use of functional encryption to
secure our data and our computation, just as public-key encryption is
widely used today to secure our communication. Realizing this vision
requires new advances in the foundations of functional encryption,
which is the target of this project.

Work performed from the beginning of the project to the end of the period covered by the report and main results achieved so far

Progress beyond the state of the art and expected potential impact (including the socio-economic impact and the wider societal implications of the project so far)

Project information

aSCEND

Grant agreement ID: 639554

Status

Ongoing project

Start date

1 June 2015
End date

31 May 2021

Funded under:

H2020-EU.1.1.

Overall budget:

€ 1 253 892,50
EU contribution

€ 1 253 892,50

Hosted by:

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS

Deliverables

Deliverables not available

Publications

Conference proceedings (11)

Targeted Homomorphic Attribute-Based Encryption

Author(s): Brakerski, Zvika; Cash, David; Tsabary , Rotem; Wee, Hoeteck

Published in: TCC 2016-B, 2016

DOI: 10.1007/978-3-662-53644-5_13

Unbounded ABE via Bilinear Entropy Expansion, Revisited

Author(s): Jie Chen, Junqing Gong, Lucas Kowalczyk, Hoeteck Wee

Published in: EUROCRYPT, 2018, Page(s) 503-534

DOI: 10.1007/978-3-319-78381-9_19

Conditional Disclosure of Secrets via Non-linear Reconstruction

Author(s): Tianren Liu, Vinod Vaikuntanathan, Hoeteck Wee

Published in: Advances in Cryptology - CRYPTO 2017, 2017, Page(s) 758-790

DOI: 10.1007/978-3-319-63688-7_25

Tight Adaptively Secure Broadcast Encryption with Short Ciphertexts and Keys

Author(s): Romain Gay, Lucas Kowalczyk, Hoeteck Wee

Published in: SCN, 2018, Page(s) 123-139

DOI: 10.1007/978-3-319-98113-0_7

Déjà Q: Encore! Un Petit IBE

Author(s): Hoeteck Wee

Published in: TCC 2016-A, 2016, Page(s) 237-258

DOI: 10.1007/978-3-662-49099-0_9

Towards Breaking the Exponential Barrier for General Secret Sharing

Author(s): Tianren Liu, Vinod Vaikuntanathan, Hoeteck Wee

Published in: EUROCRYPT, 2018, Page(s) 567-596

DOI: 10.1007/978-3-319-78381-9_21

GGH15 Beyond Permutation Branching Programs: Proofs, Attacks, and Candidates

Author(s): Yilei Chen, Vinod Vaikuntanathan, Hoeteck Wee

Published in: CRYPTO, 2018, Page(s) 577-607

DOI: 10.1007/978-3-319-96881-0_20

Private Constrained PRFs (and More) from LWE

Author(s): Zvika Brakerski, Rotem Tsabary, Vinod Vaikuntanathan, Hoeteck Wee

Published in: TCC 2017, 2017, Page(s) 264-302

DOI: 10.1007/978-3-319-70500-2_10

Multi-input Inner-Product Functional Encryption from Pairings

Author(s): Michel Abdalla, Romain Gay, Mariana Raykova, Hoeteck Wee

Published in: Advances in Cryptology - EUROCRYPT 2017, 2017, Page(s) 601-626

DOI: 10.1007/978-3-319-56620-7_21

Access Control Encryption for Equality, Comparison, and More

Author(s): Georg Fuchsbauer, Romain Gay, Lucas Kowalczyk, Claudio Orlandi

Published in: PKC 2017, 2017, Page(s) 88-118

DOI: 10.1007/978-3-662-54388-7_4

Non-interactive Zaps of Knowledge

Author(s): Georg Fuchsbauer, Michele Orrù

Published in: ACNS, 2018, Page(s) 44-62

DOI: 10.1007/978-3-319-93387-0_3

Project information

aSCEND

Grant agreement ID: 639554

Status

Ongoing project

Start date

1 June 2015
End date

31 May 2021

Funded under:

H2020-EU.1.1.

Overall budget:

€ 1 253 892,50
EU contribution

€ 1 253 892,50

Hosted by:

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS

Project information

aSCEND

Grant agreement ID: 639554

Status

Ongoing project

Start date

1 June 2015
End date

31 May 2021

Funded under:

H2020-EU.1.1.

Overall budget:

€ 1 253 892,50
EU contribution

€ 1 253 892,50

Hosted by:

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS

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Last update: 9 October 2019

Record number: 193658

CORDIS

Objective

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Beneficiaries (1)

Project information

Periodic Reporting for period 2 - aSCEND (Secure Computation on Encrypted Data)

Project information

Deliverables

Publications

Project information

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