Package: tf-encrypt
tf-encryptedtf-encrypted is a Python library built on top ofTensorFlowfor researchers and practitioners to experiment with privacy-preserving machine learning. It provides an interface similar to that of TensorFlow, and aims at making the technology readily available without first becoming an expert in machine learning, cryptography, distributed systems, and high performance computing.In particular, the library focuses on:Usability: The API and its underlying design philosophy make it easy to get started, use, and integrate privacy-preserving technology into pre-existing machine learning processes.Extensibility: The architecture supports and encourages experimentation and benchmarking of new cryptographic protocols and machine learning algorithms.Performance: Optimizing for tensor-based applications and relying on TensorFlow's backend means runtime performance comparable to that of specialized stand-alone frameworks.Community: With a primary goal of pushing the technology forward the project encourages collaboration and open source over proprietary and closed solutions.Security: Cryptographic protocols are evaluated against strong notions of security andknown limitationsare highlighted.See below for morebackground materialor visit thedocumentationto learn more about how to use the library.The project has benefitted enormously from the efforts of several contributors following its original implementation, most notablyDropout Labsand members of theOpenMinedcommunity. See below for furtherdetails.Installation & Usagetf-encrypted is available as a package onPyPIsupporting Python 3.5+ which can be installed using pip:$pipinstalltf-encryptedThe following is an example of simple matmul on encrypted data using tf-encrypted:importtensorflowastfimporttf_encryptedastfedefprovide_input():# local TensorFlow operations can be run locally# as part of defining a private input, in this# case on the machine of the input providerreturntf.ones(shape=(5,10))# define inputsw=tfe.define_private_variable(tf.ones(shape=(10,10)))x=tfe.define_private_input('input-provider',provide_input)# define computationy=tfe.matmul(x,w)withtfe.Session()assess:# initialize variablessess.run(tfe.global_variables_initializer())# reveal resultresult=sess.run(y.reveal())For more information, check out our full getting started guide in thedocumentation.Background & Further ReadingThe following texts provide further in-depth presentations of the project:Secure Computations as Dataflow Programsdescribes the initial motivation and implementationPrivate Machine Learning in TensorFlow using Secure Computationfurther elaborates on the benefits of the approach, outlines the adaptation of a secure computation protocol, and reports on concrete performance numbersExperimenting with tf-encryptedwalks through a simple example of turning an existing TensorFlow prediction model privateProject Statustf-encrypted is experimental software not currently intended for use in production environments. The focus is on building the underlying primitives and techniques, with some practical security issues post-poned for a later stage. However, care is taken to ensure that none of these represent fundamental issues that cannot be fixed as needed.Known limitationsElements of TensorFlow's networking subsystem does not appear to be sufficiently hardened against malicious users. Proxies or other means of access filtering may be sufficient to mitigate this.The pseudo-random generators provided in TensorFlow are not cryptographically strong. Custom ops could easily be used to remedy this.ContributionsDon't hesitate to send a pull request, open an issue, or ask for help!Several individuals have already had an impact on the development of this library (in alphabetical order):Ben DeCoste(Dropout Labs)Yann Dupis(Dropout Labs)Morgan Giraud(while at Dropout Labs)Ian Livingstone(Dropout Labs)Jason Mancuso(Dropout Labs)Justin Patriquin(Dropout Labs)Andrew Trask(OpenMined)Koen van der Veen(OpenMined)and several companies have invested significant resources:Dropout Labscontinues to sponsor a large amount of both research and engineeringOpenMinedwas the breeding ground for the initial idea and continues to support discussions and guidanceLicenseLicensed under Apache License, Version 2.0 (seeLICENSEorhttp://www.apache.org/licenses/LICENSE-2.0). Copyright as specified inNOTICE.