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Homomorphic encryption

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287:, i.e., capable of evaluating its own decryption circuit and then at least one more operation. Finally, he shows that any bootstrappable somewhat homomorphic encryption scheme can be converted into a fully homomorphic encryption through a recursive self-embedding. For Gentry's "noisy" scheme, the bootstrapping procedure effectively "refreshes" the ciphertext by applying to it the decryption procedure homomorphically, thereby obtaining a new ciphertext that encrypts the same value as before but has lower noise. By "refreshing" the ciphertext periodically whenever the noise grows too large, it is possible to compute an arbitrary number of additions and multiplications without increasing the noise too much. 3364:-like packing of data; they are typically used to compute on encrypted integers or real/complex numbers. Third-generation FHE scheme implementations often bootstrap after each operation but have limited support for packing; they were initially used to compute Boolean circuits over encrypted bits, but have been extended to support integer arithmetics and univariate function evaluation. The choice of using a second-generation vs. third-generation vs fourth-generation scheme depends on the input data types and the desired computation. 555:
HElib and PALISADE) and report that it is possible to recover the secret key from decryption results in several parameter configurations. The authors also propose mitigation strategies for these attacks, and include a Responsible Disclosure in the paper suggesting that the homomorphic encryption libraries already implemented mitigations for the attacks before the article became publicly available. Further information on the mitigation strategies implemented in the homomorphic encryption libraries has also been published.
309:. Instead, they show that the somewhat homomorphic component of Gentry's ideal lattice-based scheme can be replaced with a very simple somewhat homomorphic scheme that uses integers. The scheme is therefore conceptually simpler than Gentry's ideal lattice scheme, but has similar properties with regards to homomorphic operations and efficiency. The somewhat homomorphic component in the work of Van Dijk et al. is similar to an encryption scheme proposed by Levieil and 530:(GSW) proposed a new technique for building FHE schemes that avoids an expensive "relinearization" step in homomorphic multiplication. Zvika Brakerski and Vinod Vaikuntanathan observed that for certain types of circuits, the GSW cryptosystem features an even slower growth rate of noise, and hence better efficiency and stronger security. Jacob Alperin-Sheriff and Chris Peikert then described a very efficient bootstrapping technique based on this observation. 1634: 2673: 3190: 294:, and the sparse (or low-weight) subset sum problem. Gentry's Ph.D. thesis provides additional details. The Gentry-Halevi implementation of Gentry's original cryptosystem reported a timing of about 30 minutes per basic bit operation. Extensive design and implementation work in subsequent years have improved upon these early implementations by many orders of magnitude runtime performance. 2118: 3260: 971: 534:
second. FHEW introduced a new method to compute Boolean gates on encrypted data that greatly simplifies bootstrapping and implemented a variant of the bootstrapping procedure. The efficiency of FHEW was further improved by the TFHE scheme, which implements a ring variant of the bootstrapping procedure using a method similar to the one in FHEW.
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is not even additively homomorphic, however. The Levieil–Naccache scheme supports only additions, but it can be modified to also support a small number of multiplications. Many refinements and optimizations of the scheme of Van Dijk et al. were proposed in a sequence of works by Jean-Sébastien Coron,
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that allows computations to be performed on encrypted data without first having to decrypt it. The resulting computations are left in an encrypted form which, when decrypted, result in an output that is identical to that produced had the operations been performed on the unencrypted data. Homomorphic
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A 2020 article by Baiyu Li and Daniele Micciancio discusses passive attacks against CKKS, suggesting that the standard IND-CPA definition may not be sufficient in scenarios where decryption results are shared. The authors apply the attack to four modern homomorphic encryption libraries (HEAAN, SEAL,
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These techniques were further improved to develop efficient ring variants of the GSW cryptosystem: FHEW (2014) and TFHE (2016). The FHEW scheme was the first to show that by refreshing the ciphertexts after every single operation, it is possible to reduce the bootstrapping time to a fraction of a
275:, described the first plausible construction for a fully homomorphic encryption scheme in 2009. Gentry's scheme supports both addition and multiplication operations on ciphertexts, from which it is possible to construct circuits for performing arbitrary computation. The construction starts from a 546:
arithmetic. The CKKS scheme includes an efficient rescaling operation that scales down an encrypted message after a multiplication. For comparison, such rescaling requires bootstrapping in the BGV and BFV schemes. The rescaling operation makes CKKS scheme the most efficient method for evaluating
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on ciphertexts is known as fully homomorphic encryption (FHE). Such a scheme enables the construction of programs for any desirable functionality, which can be run on encrypted inputs to produce an encryption of the result. Since such a program need never decrypt its inputs, it can be run by an
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encryption scheme, which is limited to evaluating low-degree polynomials over encrypted data; it is limited because each ciphertext is noisy in some sense, and this noise grows as one adds and multiplies ciphertexts, until ultimately the noise makes the resulting ciphertext indecipherable.
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There are several open-source implementations of fully homomorphic encryption schemes. Second-generation and fourth-generation FHE scheme implementations typically operate in the leveled FHE mode (though bootstrapping is still available in some libraries) and support efficient
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The problem of constructing a fully homomorphic encryption scheme was first proposed in 1978, within a year of publishing of the RSA scheme. For more than 30 years, it was unclear whether a solution existed. During that period, partial results included the following schemes:
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concerns. But if the predictive-analytics service provider could operate on encrypted data instead, without having the decryption keys, these privacy concerns are diminished. Moreover, even if the service provider's system is compromised, the data would remain secure.
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Homomorphic encryption includes multiple types of encryption schemes that can perform different classes of computations over encrypted data. The computations are represented as either Boolean or arithmetic circuits. Some common types of homomorphic encryption are
1629:{\displaystyle {\begin{aligned}{\mathcal {E}}(m_{1})\cdot {\mathcal {E}}(m_{2})&=(g^{r_{1}},m_{1}\cdot h^{r_{1}})(g^{r_{2}},m_{2}\cdot h^{r_{2}})\\&=(g^{r_{1}+r_{2}},(m_{1}\cdot m_{2})h^{r_{1}+r_{2}})\\&={\mathcal {E}}(m_{1}\cdot m_{2}).\end{aligned}}} 2668:{\displaystyle {\begin{aligned}{\mathcal {E}}(m_{1})\cdot {\mathcal {E}}(m_{2})&=(g^{m_{1}}r_{1}^{c})(g^{m_{2}}r_{2}^{c})\;{\bmod {\;}}n\\&=g^{m_{1}+m_{2}}(r_{1}r_{2})^{c}\;{\bmod {\;}}n\\&={\mathcal {E}}(m_{1}+m_{2}\;{\bmod {\;}}c).\end{aligned}}} 3185:{\displaystyle {\begin{aligned}{\mathcal {E}}(m_{1})\cdot {\mathcal {E}}(m_{2})&=(g^{m_{1}}r_{1}^{n})(g^{m_{2}}r_{2}^{n})\;{\bmod {\;}}n^{2}\\&=g^{m_{1}+m_{2}}(r_{1}r_{2})^{n}\;{\bmod {\;}}n^{2}\\&={\mathcal {E}}(m_{1}+m_{2}).\end{aligned}}} 392:
All the second-generation cryptosystems still follow the basic blueprint of Gentry's original construction, namely they first construct a somewhat homomorphic cryptosystem and then convert it to a fully homomorphic cryptosystem using bootstrapping.
2113:{\displaystyle {\begin{aligned}{\mathcal {E}}(b_{1})\cdot {\mathcal {E}}(b_{2})&=x^{b_{1}}r_{1}^{2}x^{b_{2}}r_{2}^{2}\;{\bmod {\;}}n\\&=x^{b_{1}+b_{2}}(r_{1}r_{2})^{2}\;{\bmod {\;}}n\\&={\mathcal {E}}(b_{1}\oplus b_{2}).\end{aligned}}} 98:
For sensitive data, such as healthcare information, homomorphic encryption can be used to enable new services by removing privacy barriers inhibiting data sharing or increasing security to existing services. For example,
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For the majority of homomorphic encryption schemes, the multiplicative depth of circuits is the main practical limitation in performing computations over encrypted data. Homomorphic encryption schemes are inherently
966:{\displaystyle {\begin{aligned}{\mathcal {E}}(m_{1})\cdot {\mathcal {E}}(m_{2})&=m_{1}^{e}m_{2}^{e}\;{\bmod {\;}}n\\&=(m_{1}m_{2})^{e}\;{\bmod {\;}}n\\&={\mathcal {E}}(m_{1}\cdot m_{2})\end{aligned}}} 2883: 2368: 1837: 1294: 757: 3242:
untrusted party without revealing its inputs and internal state. Fully homomorphic cryptosystems have great practical implications in the outsourcing of private computations, for instance, in the context of
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Homomorphic encryption schemes have been developed using different approaches. Specifically, fully homomorphic encryption schemes are often grouped into generations corresponding to the underlying approach.
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Another distinguishing feature of second-generation schemes is that they are efficient enough for many applications even without invoking bootstrapping, instead operating in the leveled FHE mode.
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A distinguishing characteristic of the second-generation cryptosystems is that they all feature a much slower growth of the noise during the homomorphic computations. Additional optimizations by
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Homomorphic encryption eliminates the need for processing data in the clear, thereby preventing attacks that would enable a hacker to access that data while it is being processed, using
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In 2016, Cheon, Kim, Kim and Song (CKKS) proposed an approximate homomorphic encryption scheme that supports a special kind of fixed-point arithmetic that is commonly referred to as
2870: 2355: 1824: 1281: 503:. These optimizations build on the Smart-Vercauteren techniques that enable packing of many plaintext values in a single ciphertext and operating on all these plaintext values in a 4521:
Coron, Jean-SĂ©bastien; Mandal, Avradip; Naccache, David; Tibouchi, Mehdi (2011). "Fully Homomorphic Encryption over the Integers with Shorter Public Keys". In Rogaway, P. (ed.).
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A list of open-source FHE libraries implementing second-generation (BGV/BFV), third-generation (FHEW/TFHE), and/or fourth-generation (CKKS) FHE schemes is provided below.
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computational problem. This NTRU variant was subsequently shown vulnerable to subfield lattice attacks, which is why these two schemes are no longer used in practice.
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and Vinod Vaikuntanathan presented a second fully homomorphic encryption scheme, which uses many of the tools of Gentry's construction, but which does not require
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Rust implementation of TFHE-extended. Supporting boolean, integer operation and univariate function evaluation (via Programmable Bootstrapping).
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Topics in Cryptology – CT-RSA 2015, The Cryptographer's Track at the RSA Conference 2015, San Francisco, CA, USA, April 20–24, 2015. Proceedings
5532: 5019: 4542: 4335: 348:, and others. These innovations led to the development of much more efficient somewhat and fully homomorphic cryptosystems. These include: 551:. The scheme introduces several approximation errors, both nondeterministic and deterministic, that require special handling in practice. 3481: 5202: 3545: 3495: 1645: 227: 3533: 3324: 3211: 3201: 2750: 5933: 3343: 519: 397: 341: 298: 268: 3296: 3281: 3274: 5816: 5198: 166:
encompasses schemes that support the evaluation of circuits consisting of only one type of gate, e.g., addition or multiplication.
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Cheon, Jung Hee; Kim, Andrey; Kim, Miran; Song, Yongsoo (2017). "Homomorphic encryption for arithmetic of approximate numbers".
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in algebra: the encryption and decryption functions can be thought of as homomorphisms between plaintext and ciphertext spaces.
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fashion. Many of the advances in these second-generation cryptosystems were also ported to the cryptosystem over the integers.
3303: 4161: 3783: 373:-based scheme by Bos, Lauter, Loftus, and Naehrig (BLLN, 2013), building on LTV and Brakerski's scale-invariant cryptosystem; 1165: 691: 336:
The homomorphic cryptosystems of this generation are derived from techniques that were developed starting in 2011–2012 by
4484: 193:. In terms of malleability, homomorphic encryption schemes have weaker security properties than non-homomorphic schemes. 5943: 4166: 3310: 88:. This allows data to be encrypted and outsourced to commercial cloud environments for processing, all while encrypted. 405: 190: 4114: 178:
supports the evaluation of arbitrary circuits composed of multiple types of gates of bounded (pre-determined) depth.
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Gentry based the security of his scheme on the assumed hardness of two problems: certain worst-case problems over
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Armknecht, Frederik; Boyd, Colin; Gjøsteen, Kristian; Jäschke, Angela; Reuter, Christian; Strand, Martin (2015).
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Homomorphic Encryption from Learning with Errors: Conceptually-Simpler, Asymptotically-Faster, Attribute-Based
548: 124:. The result of such a computation remains encrypted. Homomorphic encryption can be viewed as an extension of 4983:
Structural Lattice Reduction: Generalized Worst-Case to Average-Case Reductions and Homomorphic Cryptosystems
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The Brakerski-Gentry-Vaikuntanathan (BGV, 2011) scheme, building on techniques of Brakerski-Vaikuntanathan;
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Boneh–Goh–Nissim cryptosystem (unlimited number of addition operations but at most one multiplication)
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Sander-Young-Yung system (after more than 20 years solved the problem for logarithmic depth circuits)
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Sander, Tomas; Young, Adam L.; Yung, Moti (1999). "Non-interactive cryptocomputing for NC/Sup 1/".
4197:"Council Post: Everything You Wanted To Know About Homomorphic Encryption (But Were Afraid To Ask)" 3528: 3520: 5269: 328:, and Mehdi Tibouchi. Some of these works included also implementations of the resulting schemes. 5538: 5149: 4849: 4504:"Public Key Compression and Modulus Switching for Fully Homomorphic Encryption over the Integers" 4341: 4136: 982: 256: 221: 121: 120:
with an additional evaluation capability for computing over encrypted data without access to the
53: 5838:"Intel, Microsoft Research and Duality Technologies Convene AI Community for Privacy Standards" 1048: 5690: 5528: 5015: 4538: 4331: 4253: 5795: 4463: 2126: 1092: 5520: 5510:"Programmable Bootstrapping Enables Efficient Homomorphic Inference of Deep Neural Networks" 5179: 5141: 5133: 5007: 4841: 4747: 4528: 4323: 4243: 4233: 4222:"A systematic review of homomorphic encryption and its contributions in healthcare industry" 4171: 625: 215: 17: 4304:
R. L. Rivest, L. Adleman, and M. L. Dertouzos. On data banks and privacy homomorphisms. In
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Christian Mouchet, Juan Troncoso-Pastoriza, Jean-Philippe Bossuat and Jean-Pierre Hubaux.
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Jean-Philippe Bossuat, Christian Mouchet, Juan Troncoso-Pastoriza and Jean-Pierre Hubaux.
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Verifiable encrypted computations based on Rinocchio ZKP and BGV homomorphic Encryption.
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On-the-Fly Multiparty Computation on the Cloud via Multikey Fully Homomorphic Encryption
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Efficient Bootstrapping for Approximate Homomorphic Encryption with Non-Sparse Keys
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resulted in cryptosystems with nearly optimal asymptotic complexity: Performing
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D. Boneh, E. Goh, and K. Nissim. Evaluating 2-DNF Formulas on Ciphertexts. In
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Van Dijk, Marten; Gentry, Craig; Halevi, Shai; Vinod, Vaikuntanathan (2009).
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in healthcare can be hard to apply via a third-party service provider due to
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Fully Homomorphic Encryption without Modulus Switching from Classical GapSVP
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Y. Ishai and A. Paskin. Evaluating branching programs on encrypted data. In
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40th Annual Symposium on Foundations of Computer Science (Cat. No.99CB37039)
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schemes can evaluate two types of gates, but only for a subset of circuits.
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polynomial approximations, and is the preferred approach for implementing
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The Brakerski/Fan-Vercauteren (BFV, 2012) scheme, building on Brakerski's
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Benhamouda, Fabrice; Herranz, Javier; Joye, Marc; Libert, Benoît (2017).
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Jung Hee Cheon, Kyoohyung Han, Andrey Kim, Miran Kim and Yongsoo Song.
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Improved Security for a Ring-Based Fully Homomorphic Encryption Scheme
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Ilaria Chillotti, Nicolas Gama, Mariya Georgieva and Malika Izabachene
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The security of most of these schemes is based on the hardness of the
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Ilaria Chillotti; Nicolas Gama; Mariya Georgieva; Malika Izabachene.
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Jung Hee Cheon; Kyoohyung Han; Andrey Kim; Miran Kim; Yongsoo Song.
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Approximate Homomorphic Encryption with Reduced Approximation Error
4982: 4717: 4697: 4659: 4638: 359:-based scheme by Lopez-Alt, Tromer, and Vaikuntanathan (LTV, 2012); 5768:"Juliet: A Configurable Processor for Computing on Encrypted Data" 5241: 5054:"On the Security of Homomorphic Encryption on Approximate Numbers" 5004:
Takagi T., Peyrin T. (eds) Advances in Cryptology – ASIACRYPT 2017
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Coron, Jean-Sébastien; Lepoint, Tancrède; Tibouchi, Mehdi (2014).
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Coron, Jean-Sébastien; Lepoint, Tancrède; Tibouchi, Mehdi (2013).
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Multiparty Homomorphic Encryption from Ring-Learning-With-Errors
4585:"Scale-Invariant Fully Homomorphic Encryption over the Integers" 4502:
Coron, Jean-SĂ©bastien; Naccache, David; Tibouchi, Mehdi (2011).
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Gentry then shows how to slightly modify this scheme to make it
5375:"A GPU implementation of fully homomorphic encryption on torus" 2815:{\displaystyle {\mathcal {E}}(m)=g^{m}r^{n}\;{\bmod {\;}}n^{2}} 5319:"Homomorphic Encryption for Arithmetic of Approximate Numbers" 4961: 4094: 3541: 3491: 3407: 3253: 5296: 3569:
General-purpose lattice cryptography library. Predecessor of
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FHE.org Community (conference, meetup and discussion group)
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A subfield lattice attack on overstretched NTRU assumptions
4422:"Implementing Gentry's fully-homomorphic encryption scheme" 2300:{\displaystyle {\mathcal {E}}(m)=g^{m}r^{c}\;{\bmod {\;}}n} 1769:{\displaystyle {\mathcal {E}}(b)=x^{b}r^{2}\;{\bmod {\;}}n} 4622:
Efficient Fully Homomorphic Encryption from (Standard) LWE
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cryptosystem (unbounded number of modular multiplications)
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encryption can be used for privacy-preserving outsourced
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Form of encryption that allows computation on ciphertexts
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Chillotti, Ilaria; Joye, Marc; Paillier, Pascal (2021).
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Cheon, Jung Hee; Hong, Seungwan; Kim, Duhyeong (2020).
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MoMA Lab, New York University Abu Dhabi (2019-07-24).
4563:"Batch Fully Homomorphic Encryption over the Integers" 4404:"A Fully Homomorphic Encryption Scheme (Ph.D. thesis)" 1226:{\displaystyle {\mathcal {E}}(m)=(g^{r},m\cdot h^{r})} 739:{\displaystyle {\mathcal {E}}(m)=m^{e}\;{\bmod {\;}}n} 5670:"SHEEP, a Homomorphic Encryption Evaluation Platform" 5403:"A Multi-GPU Implementation of the CGGI Cryptosystem" 4142:
Verifiable computing using a fully homomorphic scheme
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operations on data encrypted with security parameter
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Bootstrapping for Approximate Homomorphic Encryption
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Better Bootstrapping in Fully Homomorphic Encryption
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the 41st ACM Symposium on Theory of Computing (STOC)
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is the secret key, then the encryption of a message
5076:"Remark on the Security of CKKS Scheme in Practice" 60: 40: 35: 5874: 4768:Fully Homomorphic Encryption with Polylog Overhead 4606:Fully Homomorphic Encryption without Bootstrapping 3184: 2864: 2814: 2739: 2719: 2699: 2667: 2349: 2299: 2231: 2211: 2191: 2171: 2135: 2112: 1818: 1768: 1700: 1680: 1660: 1628: 1275: 1225: 1154: 1134: 1114: 1081: 1037: 1017: 997: 965: 738: 680: 660: 640: 608: 588: 495: 440: 420: 5817:"Homomorphic Encryption Standardization Workshop" 5167:Castagnos, Guilhem; Laguillaumie, Fabien (2015). 4660:"Somewhat Practical Fully Homomorphic Encryption" 4386:Fully Homomorphic Encryption Using Ideal Lattices 4111:Homomorphic Encryption Standardization Consortium 5766:Trustworthy Computing (TwC) Group (2024-06-25). 5738:Trustworthy Computing (TwC) Group (2024-07-29). 5710:Trustworthy Computing (TwC) Group (2023-03-02). 5668:Alan Turing Institute, London, UK (2019-11-01). 5517:Cyber Security Cryptography and Machine Learning 4981:N. Gama, M. Izabachène, P.Q. Nguyen, and X. Xie 4637:A. Lopez-Alt, E. Tromer, and V. Vaikuntanathan. 4604:Z. Brakerski, C. Gentry, and V. Vaikuntanathan. 4441:"Fully Homomorphic Encryption over the Integers" 596:is used to denote the encryption of the message 549:privacy-preserving machine learning applications 4818:Smart, Nigel P.; Vercauteren, Frederik (2014). 3912:TFHE-extended compiler with a Python Frontend. 5910:list of homomorphic encryption implementations 5199:"A First Glimpse of Cryptography's Holy Grail" 4929:"FHEW: A Fully Homomorphic Encryption library" 4696:J. Bos, K. Lauter, J. Loftus, and M. Naehrig. 313:in 2008, and also to one that was proposed by 224:(unbounded number of modular multiplications) 8: 5695:: CS1 maint: multiple names: authors list ( 4658:Fan, Junfeng; Vercauteren, Frederik (2012). 2859: 2835: 2344: 2320: 1813: 1789: 1270: 1246: 496:{\displaystyle T\cdot \mathrm {polylog} (k)} 30: 255:Ishai-Paskin cryptosystem (polynomial-size 5169:"Linearly Homomorphic Encryption from DDH" 4904:Faster Bootstrapping with Polynomial Error 4740:LMS Journal of Computation and Mathematics 3116: 3110: 3024: 3018: 2799: 2793: 2649: 2643: 2594: 2588: 2509: 2503: 2291: 2285: 2051: 2045: 1966: 1960: 1760: 1754: 907: 901: 852: 846: 730: 724: 4997: 4995: 4835: 4802:Homomorphic Evaluation of the AES Circuit 4751: 4532: 4273:"A Guide to Fully Homomorphic Encryption" 4247: 4237: 4132:Homomorphic signatures for network coding 3344:Learn how and when to remove this message 3196:Other partially homomorphic cryptosystems 3166: 3153: 3140: 3139: 3123: 3115: 3111: 3104: 3094: 3084: 3069: 3056: 3051: 3031: 3023: 3019: 3009: 3004: 2992: 2987: 2971: 2966: 2954: 2949: 2926: 2913: 2912: 2900: 2887: 2886: 2882: 2880: 2827: 2806: 2798: 2794: 2787: 2777: 2755: 2754: 2752: 2732: 2712: 2692: 2648: 2644: 2637: 2624: 2611: 2610: 2593: 2589: 2582: 2572: 2562: 2547: 2534: 2529: 2508: 2504: 2494: 2489: 2477: 2472: 2456: 2451: 2439: 2434: 2411: 2398: 2397: 2385: 2372: 2371: 2367: 2365: 2312: 2290: 2286: 2279: 2269: 2247: 2246: 2244: 2224: 2204: 2184: 2164: 2128: 2094: 2081: 2068: 2067: 2050: 2046: 2039: 2029: 2019: 2004: 1991: 1986: 1965: 1961: 1954: 1949: 1937: 1932: 1922: 1917: 1905: 1900: 1880: 1867: 1866: 1854: 1841: 1840: 1836: 1834: 1781: 1759: 1755: 1748: 1738: 1716: 1715: 1713: 1693: 1673: 1653: 1610: 1597: 1584: 1583: 1562: 1549: 1544: 1531: 1518: 1500: 1487: 1482: 1454: 1449: 1436: 1421: 1416: 1398: 1393: 1380: 1365: 1360: 1337: 1324: 1323: 1311: 1298: 1297: 1293: 1291: 1238: 1214: 1195: 1170: 1169: 1167: 1147: 1127: 1106: 1094: 1050: 1030: 1010: 990: 950: 937: 924: 923: 906: 902: 895: 885: 875: 851: 847: 840: 835: 825: 820: 800: 787: 786: 774: 761: 760: 756: 754: 729: 725: 718: 696: 695: 693: 673: 653: 633: 601: 571: 570: 568: 461: 453: 433: 413: 4734:Cheon, J. H.; Jeong, J; Lee, C. (2016). 4712: 4710: 4675: 4673: 4600: 4598: 4578: 4576: 4556: 4554: 3851: 3477:Samsung Advanced Institute of Technology 3366: 563:In the following examples, the notation 5797:TrustworthyComputing/PEEV-verifiableFHE 5297:"PALISADE Lattice Cryptography Library" 5052:Li, Baily; Micciancio, Daniele (2020). 4955: 4953: 4951: 4922: 4920: 4918: 4916: 4898: 4896: 4800:C. Gentry, S. Halevi, and N. P. Smart. 4783:C. Gentry, S. Halevi, and N. P. Smart. 4766:C. Gentry, S. Halevi, and N. P. Smart. 4653: 4651: 4187: 4113:, which maintains a community security 3716:Provides a GPU implementation of TFHE. 3430:BGV scheme with the GHS optimizations. 246:(unbounded number of modular additions) 240:(unbounded number of modular additions) 5688: 5034:Kim A., Papadimitriou A., Polyakov Y. 4220:Munjal, Kundan; Bhatia, Rekha (2022). 3280:Please improve this section by adding 2865:{\displaystyle r\in \{0,\ldots ,n-1\}} 2350:{\displaystyle r\in \{0,\ldots ,n-1\}} 1819:{\displaystyle r\in \{0,\ldots ,n-1\}} 1276:{\displaystyle r\in \{0,\ldots ,q-1\}} 29: 5885:Vinod Vaikuntanathan's FHE references 7: 5642:"Encrypt-Everything-Everywhere (E3)" 4883:Z. Brakerski and V. Vaikuntanathan. 4866:C. Gentry, A. Sahai, and B. Waters. 4620:Z. Brakerski and V. Vaikuntanathan. 4524:Advances in Cryptology – CRYPTO 2011 4420:Gentry, Craig; Halevi, Shai (2010). 3846:A multi-GPU implementation of CKKS. 3745:A multi-GPU implementation of TFHE. 176:Leveled fully homomorphic encryption 116:Homomorphic encryption is a form of 5880:Daniele Micciancio's FHE references 5794:TrustworthyComputing (2024-07-18), 5401:Trustworthy Computing (TwC) Group. 5203:Association for Computing Machinery 4902:J. Alperin-Sheriff and C. Peikert. 4820:"Fully Homomorphic SIMD Operations" 4716:M. Albrecht, S. Bai, and L. Ducas. 4292:"Homomorphic Encryption References" 3546:University of California, San Diego 3496:University of California, San Diego 3228:Castagnos–Laguillaumie cryptosystem 3216:Sander–Young–Yung encryption scheme 2872:. The homomorphic property is then 2727:, then the encryption of a message 2687:, if the public key is the modulus 2357:. The homomorphic property is then 2219:, then the encryption of a message 2159:, if the public key is the modulus 1826:. The homomorphic property is then 1648:, if the public key is the modulus 1283:. The homomorphic property is then 746:. The homomorphic property is then 668:, then the encryption of a message 559:Partially homomorphic cryptosystems 4885:Lattice-Based FHE as Secure as PKE 3534:New Jersey Institute of Technology 2143:denotes addition modulo 2, (i.e., 480: 477: 474: 471: 468: 465: 462: 324:Tancrède Lepoint, Avradip Mandal, 25: 5197:Daniele Micciancio (2010-03-01). 4373:Theory of Cryptography Conference 4360:Theory of Cryptography Conference 4306:Foundations of Secure Computation 4226:Complex & Intelligent Systems 589:{\displaystyle {\mathcal {E}}(x)} 3611:Leo Ducas and Daniele Micciancio 3258: 164:Partially homomorphic encryption 4927:Leo Ducas; Daniele Micciancio. 4824:Designs, Codes and Cryptography 4464:"Cryptographic Test Correction" 4157:Searchable symmetric encryption 4115:Homomorphic Encryption Standard 1688:, then the encryption of a bit 170:Somewhat homomorphic encryption 44:Various assumptions, including 5891:"Alice and Bob in Cipherspace" 4485:"Simple Public Key Encryption" 4162:Secure multi-party computation 3784:Secure multi-party computation 3172: 3146: 3101: 3077: 3015: 2980: 2977: 2942: 2932: 2919: 2906: 2893: 2767: 2761: 2655: 2617: 2579: 2555: 2500: 2465: 2462: 2427: 2417: 2404: 2391: 2378: 2259: 2253: 2100: 2074: 2036: 2012: 1886: 1873: 1860: 1847: 1728: 1722: 1646:Goldwasser–Micali cryptosystem 1616: 1590: 1570: 1537: 1511: 1475: 1462: 1409: 1406: 1353: 1343: 1330: 1317: 1304: 1220: 1188: 1182: 1176: 1076: 1052: 956: 930: 892: 868: 806: 793: 780: 767: 708: 702: 583: 577: 490: 484: 228:Goldwasser–Micali cryptosystem 1: 5083:IACR ePrint Archive 2020/1581 5061:IACR ePrint Archive 2020/1533 4109:, and others formed the open 3282:secondary or tertiary sources 3237:A cryptosystem that supports 3219:Boneh–Goh–Nissim cryptosystem 3202:Okamoto–Uchiyama cryptosystem 5840:. Intel Newsroom. 2019-08-16 5184:10.1007/978-3-319-16715-2_26 5012:10.1007/978-3-319-70694-8_15 4534:10.1007/978-3-642-22792-9_28 4167:Format-preserving encryption 3233:Fully homomorphic encryption 182:Fully homomorphic encryption 18:Fully homomorphic encryption 5525:10.1007/978-3-030-78086-9_1 5240:Shai Halevi; Victor Shoup. 3207:Naccache–Stern cryptosystem 379:(Ring) Learning With Errors 56:(multiplicative) and others 5960: 5174:. In Nyberg, Kaisa (ed.). 4239:10.1007/s40747-022-00756-z 4127:Homomorphic secret sharing 4093:In 2017, researchers from 3212:DamgĂĄrd–Jurik cryptosystem 1668:and quadratic non-residue 297:In 2010, Marten van Dijk, 273:lattice-based cryptography 5462:EUROCRYPT 2021 (Springer) 5228:EUROCRYPT 2018 (Springer) 5138:10.1007/s00145-016-9229-5 4846:10.1007/s10623-012-9720-4 4753:10.1112/S1461157016000371 4664:Cryptology ePrint Archive 4328:10.1109/SFFCS.1999.814630 4277:Cryptology ePrint Archive 3921:MoMA Lab at NYU Abu Dhabi 3538:Raytheon BBN Technologies 3222:Ishai–Paskin cryptosystem 1082:{\displaystyle (G,q,g,h)} 50:Ring learning with errors 5934:Cryptographic primitives 4177:Private set intersection 3536:, Duality Technologies, 3293:"Homomorphic encryption" 3225:Joye-Libert cryptosystem 648:and encryption exponent 159:homomorphic encryption: 5939:Public-key cryptography 5819:. Microsoft. 2017-07-13 2136:{\displaystyle \oplus } 1115:{\displaystyle h=g^{x}} 1045:, if the public key is 628:public key has modulus 448:has complexity of only 126:public-key cryptography 5929:Homomorphic encryption 4290:Vinod Vaikuntanathan. 4152:Confidential computing 4147:Client-side encryption 3753:EPFL-LDS, Tune Insight 3269:relies excessively on 3186: 2866: 2816: 2741: 2721: 2701: 2669: 2351: 2301: 2233: 2213: 2193: 2173: 2137: 2114: 1820: 1770: 1702: 1682: 1662: 1630: 1277: 1227: 1156: 1136: 1116: 1083: 1039: 1019: 999: 967: 740: 682: 662: 642: 610: 590: 497: 442: 422: 73:Homomorphic encryption 31:Homomorphic encryption 5619:Zama (15 June 2023). 5487:Zama (15 June 2023). 5126:Journal of Cryptology 3949:Alan Turing Institute 3239:arbitrary computation 3187: 2867: 2817: 2742: 2722: 2702: 2685:Paillier cryptosystem 2670: 2352: 2302: 2234: 2214: 2194: 2174: 2138: 2115: 1821: 1771: 1703: 1683: 1663: 1631: 1278: 1228: 1157: 1137: 1117: 1084: 1040: 1020: 1000: 968: 741: 683: 663: 643: 611: 591: 538:Fourth-generation FHE 498: 443: 423: 332:Second-generation FHE 244:Paillier cryptosystem 230:(unbounded number of 65:Functional encryption 5268:Microsoft Research. 4322:. pp. 554–566. 3473:Duality Technologies 2879: 2826: 2751: 2731: 2711: 2691: 2364: 2311: 2243: 2223: 2203: 2199:with a blocksize of 2183: 2163: 2157:Benaloh cryptosystem 2127: 1833: 1780: 1712: 1692: 1672: 1652: 1290: 1237: 1166: 1146: 1126: 1093: 1049: 1029: 1009: 989: 985:, in a cyclic group 983:ElGamal cryptosystem 753: 692: 672: 652: 632: 600: 567: 544:block floating point 514:Third-generation FHE 452: 432: 412: 346:Vinod Vaikuntanathan 277:somewhat homomorphic 264:First-generation FHE 238:Benaloh cryptosystem 222:ElGamal cryptosystem 105:medical data privacy 101:predictive analytics 93:privilege escalation 46:learning with errors 5944:Information privacy 3854: 3369: 3014: 2976: 2499: 2461: 1959: 1927: 845: 830: 32: 5895:American Scientist 5097:"Security of CKKS" 4137:Private biometrics 3852: 3782:variants enabling 3774:Implementation in 3391:CKKS Bootstrapping 3367: 3182: 3180: 3000: 2962: 2862: 2822:, for some random 2812: 2737: 2717: 2697: 2665: 2663: 2485: 2447: 2347: 2307:, for some random 2297: 2229: 2209: 2189: 2169: 2133: 2110: 2108: 1945: 1913: 1816: 1776:, for some random 1766: 1698: 1678: 1658: 1626: 1624: 1273: 1233:, for some random 1223: 1152: 1132: 1112: 1079: 1035: 1015: 995: 963: 961: 831: 816: 736: 678: 658: 638: 606: 586: 493: 438: 418: 257:branching programs 5621:"Concrete Python" 5534:978-3-030-78085-2 5021:978-3-319-70693-1 4544:978-3-642-22791-2 4337:978-0-7695-0409-4 4195:Sellers, Andrew. 4086: 4085: 3850: 3849: 3778:along with their 3354: 3353: 3346: 3328: 2740:{\displaystyle m} 2720:{\displaystyle g} 2700:{\displaystyle n} 2232:{\displaystyle m} 2212:{\displaystyle c} 2192:{\displaystyle g} 2172:{\displaystyle n} 1701:{\displaystyle b} 1681:{\displaystyle x} 1661:{\displaystyle n} 1640:Goldwasser–Micali 1155:{\displaystyle m} 1135:{\displaystyle x} 1038:{\displaystyle g} 1018:{\displaystyle q} 998:{\displaystyle G} 681:{\displaystyle m} 661:{\displaystyle e} 641:{\displaystyle n} 609:{\displaystyle x} 441:{\displaystyle k} 421:{\displaystyle T} 155:homomorphic, and 70: 69: 16:(Redirected from 5951: 5905: 5903: 5902: 5897:. September 2012 5863: 5862: 5855: 5849: 5848: 5846: 5845: 5834: 5828: 5827: 5825: 5824: 5813: 5807: 5806: 5805: 5804: 5791: 5785: 5784: 5782: 5780: 5763: 5757: 5756: 5754: 5752: 5735: 5729: 5728: 5726: 5724: 5707: 5701: 5700: 5694: 5686: 5684: 5682: 5665: 5659: 5658: 5656: 5654: 5637: 5631: 5630: 5616: 5610: 5609: 5607: 5605: 5588: 5582: 5581: 5579: 5577: 5560: 5554: 5553: 5551: 5549: 5514: 5505: 5499: 5498: 5484: 5478: 5471: 5465: 5454: 5448: 5447: 5445: 5443: 5431:"Lattigo v3.0.5" 5426: 5420: 5419: 5417: 5415: 5398: 5392: 5391: 5389: 5387: 5370: 5364: 5363: 5361: 5359: 5345:Crypto Experts. 5342: 5336: 5335: 5333: 5331: 5314: 5308: 5307: 5305: 5303: 5293: 5287: 5286: 5284: 5282: 5270:"Microsoft SEAL" 5265: 5259: 5258: 5256: 5254: 5237: 5231: 5220: 5214: 5213: 5211: 5210: 5194: 5188: 5187: 5173: 5164: 5158: 5157: 5123: 5114: 5108: 5107: 5105: 5103: 5093: 5087: 5086: 5080: 5071: 5065: 5064: 5058: 5049: 5043: 5032: 5026: 5025: 4999: 4990: 4979: 4973: 4972: 4970: 4968: 4957: 4946: 4945: 4943: 4941: 4924: 4911: 4900: 4891: 4881: 4875: 4864: 4858: 4857: 4839: 4815: 4809: 4798: 4792: 4781: 4775: 4764: 4758: 4757: 4755: 4731: 4725: 4714: 4705: 4694: 4688: 4677: 4668: 4667: 4655: 4646: 4635: 4629: 4618: 4612: 4602: 4593: 4592: 4580: 4571: 4570: 4558: 4549: 4548: 4536: 4518: 4512: 4511: 4499: 4493: 4492: 4487:. Archived from 4477: 4471: 4470: 4468: 4455: 4449: 4448: 4436: 4430: 4429: 4417: 4411: 4410: 4408: 4399: 4393: 4382: 4376: 4369: 4363: 4356: 4350: 4349: 4315: 4309: 4302: 4296: 4295: 4287: 4281: 4280: 4268: 4262: 4261: 4251: 4241: 4232:(4): 3759–3786. 4217: 4211: 4210: 4208: 4207: 4192: 4172:Polymorphic code 3855: 3485: 3370: 3349: 3342: 3338: 3335: 3329: 3327: 3286: 3262: 3254: 3191: 3189: 3188: 3183: 3181: 3171: 3170: 3158: 3157: 3145: 3144: 3132: 3128: 3127: 3118: 3117: 3109: 3108: 3099: 3098: 3089: 3088: 3076: 3075: 3074: 3073: 3061: 3060: 3040: 3036: 3035: 3026: 3025: 3013: 3008: 2999: 2998: 2997: 2996: 2975: 2970: 2961: 2960: 2959: 2958: 2931: 2930: 2918: 2917: 2905: 2904: 2892: 2891: 2871: 2869: 2868: 2863: 2821: 2819: 2818: 2813: 2811: 2810: 2801: 2800: 2792: 2791: 2782: 2781: 2760: 2759: 2746: 2744: 2743: 2738: 2726: 2724: 2723: 2718: 2706: 2704: 2703: 2698: 2674: 2672: 2671: 2666: 2664: 2651: 2650: 2642: 2641: 2629: 2628: 2616: 2615: 2603: 2596: 2595: 2587: 2586: 2577: 2576: 2567: 2566: 2554: 2553: 2552: 2551: 2539: 2538: 2518: 2511: 2510: 2498: 2493: 2484: 2483: 2482: 2481: 2460: 2455: 2446: 2445: 2444: 2443: 2416: 2415: 2403: 2402: 2390: 2389: 2377: 2376: 2356: 2354: 2353: 2348: 2306: 2304: 2303: 2298: 2293: 2292: 2284: 2283: 2274: 2273: 2252: 2251: 2238: 2236: 2235: 2230: 2218: 2216: 2215: 2210: 2198: 2196: 2195: 2190: 2178: 2176: 2175: 2170: 2142: 2140: 2139: 2134: 2119: 2117: 2116: 2111: 2109: 2099: 2098: 2086: 2085: 2073: 2072: 2060: 2053: 2052: 2044: 2043: 2034: 2033: 2024: 2023: 2011: 2010: 2009: 2008: 1996: 1995: 1975: 1968: 1967: 1958: 1953: 1944: 1943: 1942: 1941: 1926: 1921: 1912: 1911: 1910: 1909: 1885: 1884: 1872: 1871: 1859: 1858: 1846: 1845: 1825: 1823: 1822: 1817: 1775: 1773: 1772: 1767: 1762: 1761: 1753: 1752: 1743: 1742: 1721: 1720: 1707: 1705: 1704: 1699: 1687: 1685: 1684: 1679: 1667: 1665: 1664: 1659: 1635: 1633: 1632: 1627: 1625: 1615: 1614: 1602: 1601: 1589: 1588: 1576: 1569: 1568: 1567: 1566: 1554: 1553: 1536: 1535: 1523: 1522: 1507: 1506: 1505: 1504: 1492: 1491: 1468: 1461: 1460: 1459: 1458: 1441: 1440: 1428: 1427: 1426: 1425: 1405: 1404: 1403: 1402: 1385: 1384: 1372: 1371: 1370: 1369: 1342: 1341: 1329: 1328: 1316: 1315: 1303: 1302: 1282: 1280: 1279: 1274: 1232: 1230: 1229: 1224: 1219: 1218: 1200: 1199: 1175: 1174: 1161: 1159: 1158: 1153: 1141: 1139: 1138: 1133: 1121: 1119: 1118: 1113: 1111: 1110: 1088: 1086: 1085: 1080: 1044: 1042: 1041: 1036: 1024: 1022: 1021: 1016: 1004: 1002: 1001: 996: 972: 970: 969: 964: 962: 955: 954: 942: 941: 929: 928: 916: 909: 908: 900: 899: 890: 889: 880: 879: 861: 854: 853: 844: 839: 829: 824: 805: 804: 792: 791: 779: 778: 766: 765: 745: 743: 742: 737: 732: 731: 723: 722: 701: 700: 687: 685: 684: 679: 667: 665: 664: 659: 647: 645: 644: 639: 615: 613: 612: 607: 595: 593: 592: 587: 576: 575: 502: 500: 499: 494: 483: 447: 445: 444: 439: 427: 425: 424: 419: 33: 21: 5959: 5958: 5954: 5953: 5952: 5950: 5949: 5948: 5919: 5918: 5900: 5898: 5889: 5871: 5866: 5861:. 8 March 2021. 5857: 5856: 5852: 5843: 5841: 5836: 5835: 5831: 5822: 5820: 5815: 5814: 5810: 5802: 5800: 5793: 5792: 5788: 5778: 5776: 5765: 5764: 5760: 5750: 5748: 5737: 5736: 5732: 5722: 5720: 5709: 5708: 5704: 5687: 5680: 5678: 5667: 5666: 5662: 5652: 5650: 5639: 5638: 5634: 5618: 5617: 5613: 5603: 5601: 5590: 5589: 5585: 5575: 5573: 5562: 5561: 5557: 5547: 5545: 5535: 5512: 5507: 5506: 5502: 5486: 5485: 5481: 5472: 5468: 5455: 5451: 5441: 5439: 5428: 5427: 5423: 5413: 5411: 5400: 5399: 5395: 5385: 5383: 5372: 5371: 5367: 5357: 5355: 5344: 5343: 5339: 5329: 5327: 5316: 5315: 5311: 5301: 5299: 5295: 5294: 5290: 5280: 5278: 5267: 5266: 5262: 5252: 5250: 5239: 5238: 5234: 5221: 5217: 5208: 5206: 5196: 5195: 5191: 5171: 5166: 5165: 5161: 5121: 5116: 5115: 5111: 5101: 5099: 5095: 5094: 5090: 5078: 5073: 5072: 5068: 5056: 5051: 5050: 5046: 5033: 5029: 5022: 5001: 5000: 4993: 4980: 4976: 4966: 4964: 4959: 4958: 4949: 4939: 4937: 4926: 4925: 4914: 4901: 4894: 4882: 4878: 4865: 4861: 4837:10.1.1.294.4088 4817: 4816: 4812: 4799: 4795: 4782: 4778: 4765: 4761: 4733: 4732: 4728: 4715: 4708: 4695: 4691: 4678: 4671: 4657: 4656: 4649: 4636: 4632: 4619: 4615: 4603: 4596: 4582: 4581: 4574: 4560: 4559: 4552: 4545: 4520: 4519: 4515: 4501: 4500: 4496: 4479: 4478: 4474: 4466: 4460:Naccache, David 4458:Levieil, Eric; 4457: 4456: 4452: 4438: 4437: 4433: 4419: 4418: 4414: 4406: 4401: 4400: 4396: 4383: 4379: 4370: 4366: 4357: 4353: 4338: 4317: 4316: 4312: 4303: 4299: 4289: 4288: 4284: 4270: 4269: 4265: 4219: 4218: 4214: 4205: 4203: 4194: 4193: 4189: 4185: 4123: 4091: 4089:Standardization 3853:FHE frameworks 3479: 3350: 3339: 3333: 3330: 3287: 3285: 3279: 3275:primary sources 3263: 3252: 3250:Implementations 3244:cloud computing 3235: 3179: 3178: 3162: 3149: 3130: 3129: 3119: 3100: 3090: 3080: 3065: 3052: 3047: 3038: 3037: 3027: 2988: 2983: 2950: 2945: 2935: 2922: 2896: 2877: 2876: 2824: 2823: 2802: 2783: 2773: 2749: 2748: 2729: 2728: 2709: 2708: 2689: 2688: 2662: 2661: 2633: 2620: 2601: 2600: 2578: 2568: 2558: 2543: 2530: 2525: 2516: 2515: 2473: 2468: 2435: 2430: 2420: 2407: 2381: 2362: 2361: 2309: 2308: 2275: 2265: 2241: 2240: 2221: 2220: 2201: 2200: 2181: 2180: 2161: 2160: 2125: 2124: 2107: 2106: 2090: 2077: 2058: 2057: 2035: 2025: 2015: 2000: 1987: 1982: 1973: 1972: 1933: 1928: 1901: 1896: 1889: 1876: 1850: 1831: 1830: 1778: 1777: 1744: 1734: 1710: 1709: 1690: 1689: 1670: 1669: 1650: 1649: 1623: 1622: 1606: 1593: 1574: 1573: 1558: 1545: 1540: 1527: 1514: 1496: 1483: 1478: 1466: 1465: 1450: 1445: 1432: 1417: 1412: 1394: 1389: 1376: 1361: 1356: 1346: 1333: 1307: 1288: 1287: 1235: 1234: 1210: 1191: 1164: 1163: 1144: 1143: 1124: 1123: 1102: 1091: 1090: 1047: 1046: 1027: 1026: 1025:with generator 1007: 1006: 987: 986: 960: 959: 946: 933: 914: 913: 891: 881: 871: 859: 858: 809: 796: 770: 751: 750: 714: 690: 689: 670: 669: 650: 649: 630: 629: 598: 597: 565: 564: 561: 540: 516: 450: 449: 430: 429: 410: 409: 385:variant of the 364:scale-invariant 338:Zvika Brakerski 334: 266: 208: 199: 114: 61:Related to 28: 23: 22: 15: 12: 11: 5: 5957: 5955: 5947: 5946: 5941: 5936: 5931: 5921: 5920: 5917: 5916: 5912:maintained on 5906: 5887: 5882: 5877: 5870: 5869:External links 5867: 5865: 5864: 5850: 5829: 5808: 5786: 5758: 5730: 5702: 5660: 5632: 5611: 5583: 5565:"Liberate.FHE" 5555: 5533: 5500: 5479: 5466: 5449: 5421: 5393: 5365: 5337: 5309: 5288: 5260: 5232: 5215: 5189: 5159: 5132:(2): 519–549. 5109: 5088: 5066: 5044: 5027: 5020: 4991: 4987:EUROCRYPT 2016 4974: 4947: 4912: 4892: 4876: 4859: 4810: 4793: 4776: 4772:EUROCRYPT 2012 4759: 4746:(1): 255–266. 4726: 4706: 4689: 4679:Z. Brakerski. 4669: 4647: 4630: 4613: 4594: 4572: 4567:Eurocrypt 2013 4550: 4543: 4513: 4508:Eurocrypt 2012 4494: 4491:on 2011-10-07. 4472: 4450: 4445:Eurocrypt 2010 4431: 4426:Eurocrypt 2011 4412: 4402:Craig Gentry. 4394: 4384:Craig Gentry. 4377: 4364: 4351: 4336: 4310: 4297: 4282: 4263: 4212: 4186: 4184: 4181: 4180: 4179: 4174: 4169: 4164: 4159: 4154: 4149: 4144: 4139: 4134: 4129: 4122: 4119: 4090: 4087: 4084: 4083: 4080: 4077: 4074: 4071: 4068: 4065: 4062: 4059: 4055: 4054: 4052: 4049: 4046: 4043: 4040: 4037: 4034: 4031: 4027: 4026: 4024: 4021: 4018: 4015: 4012: 4009: 4006: 4003: 3999: 3998: 3996: 3993: 3990: 3987: 3984: 3981: 3978: 3975: 3971: 3970: 3968: 3965: 3962: 3959: 3956: 3953: 3950: 3947: 3943: 3942: 3940: 3937: 3934: 3931: 3928: 3925: 3922: 3919: 3915: 3914: 3909: 3906: 3903: 3900: 3897: 3894: 3891: 3888: 3884: 3883: 3880: 3877: 3874: 3871: 3868: 3865: 3862: 3859: 3848: 3847: 3844: 3841: 3838: 3835: 3832: 3829: 3826: 3823: 3819: 3818: 3813: 3810: 3807: 3804: 3801: 3798: 3795: 3792: 3788: 3787: 3772: 3769: 3766: 3763: 3760: 3757: 3754: 3751: 3747: 3746: 3743: 3740: 3737: 3734: 3731: 3728: 3725: 3722: 3718: 3717: 3714: 3711: 3708: 3705: 3702: 3699: 3696: 3693: 3689: 3688: 3686: 3683: 3680: 3677: 3674: 3671: 3668: 3665: 3661: 3660: 3658: 3655: 3652: 3649: 3646: 3643: 3640: 3637: 3633: 3632: 3630: 3627: 3624: 3621: 3618: 3615: 3612: 3609: 3605: 3604: 3602: 3599: 3596: 3593: 3590: 3587: 3584: 3581: 3575: 3574: 3567: 3564: 3561: 3558: 3555: 3552: 3549: 3531: 3525: 3524: 3517: 3514: 3511: 3508: 3505: 3502: 3499: 3470: 3464: 3463: 3461: 3458: 3455: 3452: 3449: 3446: 3443: 3438: 3436:Microsoft SEAL 3432: 3431: 3428: 3425: 3422: 3419: 3416: 3413: 3410: 3405: 3399: 3398: 3395: 3392: 3389: 3386: 3383: 3380: 3377: 3374: 3368:FHE libraries 3352: 3351: 3266: 3264: 3257: 3251: 3248: 3240: 3234: 3231: 3230: 3229: 3226: 3223: 3220: 3217: 3214: 3209: 3204: 3193: 3192: 3177: 3174: 3169: 3165: 3161: 3156: 3152: 3148: 3143: 3138: 3135: 3133: 3131: 3126: 3122: 3114: 3107: 3103: 3097: 3093: 3087: 3083: 3079: 3072: 3068: 3064: 3059: 3055: 3050: 3046: 3043: 3041: 3039: 3034: 3030: 3022: 3017: 3012: 3007: 3003: 2995: 2991: 2986: 2982: 2979: 2974: 2969: 2965: 2957: 2953: 2948: 2944: 2941: 2938: 2936: 2934: 2929: 2925: 2921: 2916: 2911: 2908: 2903: 2899: 2895: 2890: 2885: 2884: 2861: 2858: 2855: 2852: 2849: 2846: 2843: 2840: 2837: 2834: 2831: 2809: 2805: 2797: 2790: 2786: 2780: 2776: 2772: 2769: 2766: 2763: 2758: 2736: 2716: 2696: 2676: 2675: 2660: 2657: 2654: 2647: 2640: 2636: 2632: 2627: 2623: 2619: 2614: 2609: 2606: 2604: 2602: 2599: 2592: 2585: 2581: 2575: 2571: 2565: 2561: 2557: 2550: 2546: 2542: 2537: 2533: 2528: 2524: 2521: 2519: 2517: 2514: 2507: 2502: 2497: 2492: 2488: 2480: 2476: 2471: 2467: 2464: 2459: 2454: 2450: 2442: 2438: 2433: 2429: 2426: 2423: 2421: 2419: 2414: 2410: 2406: 2401: 2396: 2393: 2388: 2384: 2380: 2375: 2370: 2369: 2346: 2343: 2340: 2337: 2334: 2331: 2328: 2325: 2322: 2319: 2316: 2296: 2289: 2282: 2278: 2272: 2268: 2264: 2261: 2258: 2255: 2250: 2228: 2208: 2188: 2168: 2132: 2121: 2120: 2105: 2102: 2097: 2093: 2089: 2084: 2080: 2076: 2071: 2066: 2063: 2061: 2059: 2056: 2049: 2042: 2038: 2032: 2028: 2022: 2018: 2014: 2007: 2003: 1999: 1994: 1990: 1985: 1981: 1978: 1976: 1974: 1971: 1964: 1957: 1952: 1948: 1940: 1936: 1931: 1925: 1920: 1916: 1908: 1904: 1899: 1895: 1892: 1890: 1888: 1883: 1879: 1875: 1870: 1865: 1862: 1857: 1853: 1849: 1844: 1839: 1838: 1815: 1812: 1809: 1806: 1803: 1800: 1797: 1794: 1791: 1788: 1785: 1765: 1758: 1751: 1747: 1741: 1737: 1733: 1730: 1727: 1724: 1719: 1697: 1677: 1657: 1637: 1636: 1621: 1618: 1613: 1609: 1605: 1600: 1596: 1592: 1587: 1582: 1579: 1577: 1575: 1572: 1565: 1561: 1557: 1552: 1548: 1543: 1539: 1534: 1530: 1526: 1521: 1517: 1513: 1510: 1503: 1499: 1495: 1490: 1486: 1481: 1477: 1474: 1471: 1469: 1467: 1464: 1457: 1453: 1448: 1444: 1439: 1435: 1431: 1424: 1420: 1415: 1411: 1408: 1401: 1397: 1392: 1388: 1383: 1379: 1375: 1368: 1364: 1359: 1355: 1352: 1349: 1347: 1345: 1340: 1336: 1332: 1327: 1322: 1319: 1314: 1310: 1306: 1301: 1296: 1295: 1272: 1269: 1266: 1263: 1260: 1257: 1254: 1251: 1248: 1245: 1242: 1222: 1217: 1213: 1209: 1206: 1203: 1198: 1194: 1190: 1187: 1184: 1181: 1178: 1173: 1151: 1131: 1109: 1105: 1101: 1098: 1078: 1075: 1072: 1069: 1066: 1063: 1060: 1057: 1054: 1034: 1014: 994: 974: 973: 958: 953: 949: 945: 940: 936: 932: 927: 922: 919: 917: 915: 912: 905: 898: 894: 888: 884: 878: 874: 870: 867: 864: 862: 860: 857: 850: 843: 838: 834: 828: 823: 819: 815: 812: 810: 808: 803: 799: 795: 790: 785: 782: 777: 773: 769: 764: 759: 758: 735: 728: 721: 717: 713: 710: 707: 704: 699: 677: 657: 637: 605: 585: 582: 579: 574: 560: 557: 539: 536: 515: 512: 492: 489: 486: 482: 479: 476: 473: 470: 467: 464: 460: 457: 437: 417: 375: 374: 367: 365: 360: 353: 333: 330: 326:David Naccache 321:Cohen's method 307:ideal lattices 292:ideal lattices 285:bootstrappable 265: 262: 261: 260: 253: 250: 247: 241: 235: 225: 219: 207: 204: 198: 195: 186: 185: 179: 173: 167: 113: 110: 68: 67: 62: 58: 57: 42: 38: 37: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 5956: 5945: 5942: 5940: 5937: 5935: 5932: 5930: 5927: 5926: 5924: 5915: 5911: 5907: 5896: 5892: 5888: 5886: 5883: 5881: 5878: 5876: 5873: 5872: 5868: 5860: 5854: 5851: 5839: 5833: 5830: 5818: 5812: 5809: 5799: 5798: 5790: 5787: 5775: 5774: 5769: 5762: 5759: 5747: 5746: 5741: 5734: 5731: 5719: 5718: 5713: 5706: 5703: 5698: 5692: 5677: 5676: 5671: 5664: 5661: 5649: 5648: 5643: 5636: 5633: 5628: 5627: 5622: 5615: 5612: 5600: 5599: 5594: 5587: 5584: 5572: 5571: 5566: 5559: 5556: 5544: 5540: 5536: 5530: 5526: 5522: 5518: 5511: 5504: 5501: 5496: 5495: 5490: 5483: 5480: 5476: 5470: 5467: 5463: 5459: 5453: 5450: 5438: 5437: 5432: 5425: 5422: 5410: 5409: 5404: 5397: 5394: 5382: 5381: 5376: 5369: 5366: 5354: 5353: 5348: 5341: 5338: 5326: 5325: 5320: 5313: 5310: 5298: 5292: 5289: 5277: 5276: 5271: 5264: 5261: 5249: 5248: 5243: 5236: 5233: 5229: 5225: 5219: 5216: 5204: 5200: 5193: 5190: 5185: 5181: 5177: 5170: 5163: 5160: 5155: 5151: 5147: 5143: 5139: 5135: 5131: 5127: 5120: 5113: 5110: 5098: 5092: 5089: 5084: 5077: 5070: 5067: 5062: 5055: 5048: 5045: 5041: 5037: 5031: 5028: 5023: 5017: 5013: 5009: 5005: 4998: 4996: 4992: 4988: 4984: 4978: 4975: 4963: 4956: 4954: 4952: 4948: 4936: 4935: 4930: 4923: 4921: 4919: 4917: 4913: 4909: 4905: 4899: 4897: 4893: 4890: 4886: 4880: 4877: 4873: 4869: 4863: 4860: 4855: 4851: 4847: 4843: 4838: 4833: 4829: 4825: 4821: 4814: 4811: 4807: 4803: 4797: 4794: 4790: 4786: 4780: 4777: 4773: 4769: 4763: 4760: 4754: 4749: 4745: 4741: 4737: 4730: 4727: 4723: 4719: 4713: 4711: 4707: 4703: 4699: 4693: 4690: 4686: 4682: 4676: 4674: 4670: 4665: 4661: 4654: 4652: 4648: 4644: 4640: 4634: 4631: 4627: 4623: 4617: 4614: 4611: 4607: 4601: 4599: 4595: 4590: 4586: 4579: 4577: 4573: 4568: 4564: 4557: 4555: 4551: 4546: 4540: 4535: 4530: 4526: 4525: 4517: 4514: 4509: 4505: 4498: 4495: 4490: 4486: 4482: 4476: 4473: 4465: 4461: 4454: 4451: 4446: 4442: 4435: 4432: 4427: 4423: 4416: 4413: 4405: 4398: 4395: 4391: 4387: 4381: 4378: 4374: 4368: 4365: 4361: 4355: 4352: 4347: 4343: 4339: 4333: 4329: 4325: 4321: 4314: 4311: 4307: 4301: 4298: 4293: 4286: 4283: 4278: 4274: 4267: 4264: 4259: 4255: 4250: 4245: 4240: 4235: 4231: 4227: 4223: 4216: 4213: 4202: 4198: 4191: 4188: 4182: 4178: 4175: 4173: 4170: 4168: 4165: 4163: 4160: 4158: 4155: 4153: 4150: 4148: 4145: 4143: 4140: 4138: 4135: 4133: 4130: 4128: 4125: 4124: 4120: 4118: 4116: 4112: 4108: 4104: 4100: 4096: 4088: 4081: 4078: 4075: 4072: 4069: 4066: 4063: 4060: 4057: 4056: 4053: 4050: 4047: 4044: 4041: 4038: 4035: 4032: 4029: 4028: 4025: 4022: 4019: 4016: 4013: 4010: 4007: 4004: 4001: 4000: 3997: 3994: 3991: 3988: 3985: 3982: 3979: 3976: 3973: 3972: 3969: 3966: 3963: 3960: 3957: 3954: 3951: 3948: 3945: 3944: 3941: 3938: 3935: 3932: 3929: 3926: 3923: 3920: 3917: 3916: 3913: 3910: 3907: 3904: 3901: 3898: 3895: 3892: 3889: 3886: 3885: 3881: 3878: 3875: 3872: 3869: 3866: 3863: 3860: 3857: 3856: 3845: 3842: 3839: 3836: 3833: 3830: 3827: 3824: 3821: 3820: 3817: 3814: 3811: 3808: 3805: 3802: 3799: 3796: 3793: 3790: 3789: 3785: 3781: 3777: 3773: 3770: 3767: 3764: 3761: 3758: 3755: 3752: 3749: 3748: 3744: 3741: 3738: 3735: 3732: 3729: 3726: 3723: 3720: 3719: 3715: 3712: 3709: 3706: 3703: 3700: 3697: 3694: 3691: 3690: 3687: 3684: 3681: 3678: 3675: 3672: 3669: 3667:CryptoExperts 3666: 3663: 3662: 3659: 3656: 3653: 3650: 3647: 3644: 3641: 3638: 3635: 3634: 3631: 3628: 3625: 3622: 3619: 3616: 3613: 3610: 3607: 3606: 3603: 3600: 3597: 3594: 3591: 3588: 3585: 3582: 3580: 3577: 3576: 3572: 3568: 3565: 3562: 3559: 3556: 3553: 3550: 3547: 3543: 3539: 3535: 3532: 3530: 3527: 3526: 3522: 3519:Successor to 3518: 3515: 3512: 3509: 3506: 3503: 3500: 3497: 3493: 3489: 3483: 3478: 3474: 3471: 3469: 3466: 3465: 3462: 3459: 3456: 3453: 3450: 3447: 3444: 3442: 3439: 3437: 3434: 3433: 3429: 3426: 3423: 3420: 3417: 3414: 3411: 3409: 3406: 3404: 3401: 3400: 3396: 3393: 3390: 3387: 3384: 3381: 3378: 3375: 3372: 3371: 3365: 3363: 3357: 3348: 3345: 3337: 3326: 3323: 3319: 3316: 3312: 3309: 3305: 3302: 3298: 3295: â€“  3294: 3290: 3289:Find sources: 3283: 3277: 3276: 3272: 3267:This section 3265: 3261: 3256: 3255: 3249: 3247: 3245: 3238: 3232: 3227: 3224: 3221: 3218: 3215: 3213: 3210: 3208: 3205: 3203: 3200: 3199: 3198: 3197: 3175: 3167: 3163: 3159: 3154: 3150: 3136: 3134: 3124: 3120: 3105: 3095: 3091: 3085: 3081: 3070: 3066: 3062: 3057: 3053: 3048: 3044: 3042: 3032: 3028: 3010: 3005: 3001: 2993: 2989: 2984: 2972: 2967: 2963: 2955: 2951: 2946: 2939: 2937: 2927: 2923: 2909: 2901: 2897: 2875: 2874: 2873: 2856: 2853: 2850: 2847: 2844: 2841: 2838: 2832: 2829: 2807: 2803: 2788: 2784: 2778: 2774: 2770: 2764: 2734: 2714: 2707:and the base 2694: 2686: 2681: 2680: 2658: 2652: 2638: 2634: 2630: 2625: 2621: 2607: 2605: 2597: 2583: 2573: 2569: 2563: 2559: 2548: 2544: 2540: 2535: 2531: 2526: 2522: 2520: 2512: 2495: 2490: 2486: 2478: 2474: 2469: 2457: 2452: 2448: 2440: 2436: 2431: 2424: 2422: 2412: 2408: 2394: 2386: 2382: 2360: 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1400:1 1396:r 1391:h 1382:1 1378:m 1374:, 1367:1 1363:r 1358:g 1354:( 1351:= 1344:) 1339:2 1335:m 1331:( 1326:E 1318:) 1313:1 1309:m 1305:( 1300:E 1271:} 1268:1 1262:q 1259:, 1253:, 1250:0 1247:{ 1241:r 1221:) 1216:r 1212:h 1205:m 1202:, 1197:r 1193:g 1189:( 1186:= 1183:) 1180:m 1177:( 1172:E 1150:m 1130:x 1108:x 1104:g 1100:= 1097:h 1077:) 1074:h 1071:, 1068:g 1065:, 1062:q 1059:, 1056:G 1053:( 1033:g 1013:q 993:G 957:) 952:2 948:m 939:1 935:m 931:( 926:E 921:= 911:n 897:e 893:) 887:2 883:m 877:1 873:m 869:( 866:= 856:n 842:e 837:2 833:m 827:e 822:1 818:m 814:= 807:) 802:2 798:m 794:( 789:E 781:) 776:1 772:m 768:( 763:E 734:n 720:e 716:m 712:= 709:) 706:m 703:( 698:E 676:m 656:e 636:n 604:x 584:) 581:x 578:( 573:E 491:) 488:k 485:( 481:g 478:o 475:l 472:y 469:l 466:o 463:p 456:T 436:k 416:T 259:) 20:)

Index

Fully homomorphic encryption
learning with errors
Ring learning with errors
RSA
Functional encryption
encryption
storage
computation
privilege escalation
predictive analytics
medical data privacy
encryption
secret key
public-key cryptography
homomorphism
malleable
RSA
ElGamal cryptosystem
Goldwasser–Micali cryptosystem
exclusive or
Benaloh cryptosystem
Paillier cryptosystem
branching programs
Craig Gentry
lattice-based cryptography
ideal lattices
Craig Gentry
Shai Halevi
ideal lattices
Naccache

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