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Obfuscating compilers protect a software by obscuring its meaning and impeding the reconstruction of its original source code. The typical concern when defining such compilers is their robustness against reverse engineering and the…

Programming Languages · Computer Science 2020-03-13 Matteo Busi , Pierpaolo Degano , Letterio Galletta

Large-scale password data breaches are becoming increasingly commonplace, which has enabled researchers to produce a substantial body of password security research utilising real-world password datasets, which often contain numbers of…

Cryptography and Security · Computer Science 2024-03-18 Saul Johnson , João Ferreira , Alexandra Mendes , Julien Cordry

As AI agents become increasingly autonomous and capable, ensuring their security against vulnerabilities such as prompt injection becomes critical. This paper explores the use of information-flow control (IFC) to provide security guarantees…

This work presents a new tool to verify the correctness of cryptographic implementations with respect to cache attacks. Our methodology discovers vulnerabilities that are hard to find with other techniques, observed as exploitable leakage.…

Cryptography and Security · Computer Science 2017-09-07 Gorka Irazoqui , Kai Cong , Xiaofei Guo , Hareesh Khattri , Arun Kanuparthi , Thomas Eisenbarth , Berk Sunar

Protecting confidential data from leaking is a critical challenge in computer systems, particularly given the growing number of observers on the internet. Therefore, limiting information flow using robust security policies becomes…

Creating good type error messages for constraint-based type inference systems is difficult. Typical type error messages reflect implementation details of the underlying constraint-solving algorithms rather than the specific factors leading…

Programming Languages · Computer Science 2024-02-21 Ishan Bhanuka , Lionel Parreaux , David Binder , Jonathan Immanuel Brachthäuser

Software watermarking allows for embedding a mark into a piece of code, such that any attempt to remove the mark will render the code useless. Provably secure watermarking schemes currently seems limited to programs computing various…

Cryptography and Security · Computer Science 2024-10-15 Jiahui Liu , Mark Zhandry

Static information flow control (IFC) systems provide the ability to restrict data flows within a program, enabling vulnerable functionality or confidential data to be statically isolated from unsecured data or program logic. Despite the…

Programming Languages · Computer Science 2022-10-25 Hemant Gouni , Jonathan Aldrich

Realizing flow security in a concurrent environment is extremely challenging, primarily due to non-deterministic nature of execution. The difficulty is further exacerbated from a security angle if sequential threads disclose control…

Programming Languages · Computer Science 2021-03-04 Sandip Ghosal , R. K. Shyamasundar

We propose a novel type system for verifying that programs correctly implement constant-resource behavior. Our type system extends recent work on automatic amortized resource analysis (AARA), a set of techniques that automatically derive…

Programming Languages · Computer Science 2018-01-09 Van Chan Ngo , Mario Dehesa-Azuara , Matthew Fredrikson , Jan Hoffmann

Computer-based systems have solved several domain problems, including industrial, military, education, and wearable. Nevertheless, such arrangements need high-quality software to guarantee security and safety as both are mandatory for…

With the advent of wide security platforms able to express simultaneously all the policies comprising an organization's global security policy, the problem of inconsistencies within security policies become harder and more relevant. We have…

Logic in Computer Science · Computer Science 2007-05-23 Carlos Ribeiro , Andre Zuquete , Paulo Ferreira , Paulo Guedes

We introduce a novel type system for enforcing secure information flow in an imperative language. Our work is motivated by the problem of statically checking potential information leakage in Android applications. To this end, we design a…

Programming Languages · Computer Science 2017-09-28 Hongxu Chen , Alwen Tiu , Zhiwu Xu , Yang Liu

This paper describes an `obfuscating' C compiler for encrypted computing. The context consists of (i) a processor that `works encrypted', taking in encrypted inputs and producing encrypted outputs while the data remains in encrypted form…

Cryptography and Security · Computer Science 2021-12-30 Peter Breuer

Information flow policies are often dynamic; the security concerns of a program will typically change during execution to reflect security-relevant events. A key challenge is how to best specify, and give proper meaning to, such dynamic…

Cryptography and Security · Computer Science 2015-09-24 Niklas Broberg , Bart van Delft , David Sands

Fault attacks enable adversaries to manipulate the control-flow of security-critical applications. By inducing targeted faults into the CPU, the software's call graph can be escaped and the control-flow can be redirected to arbitrary…

Cryptography and Security · Computer Science 2023-03-27 Pascal Nasahl , Salmin Sultana , Hans Liljestrand , Karanvir Grewal , Michael LeMay , David M. Durham , David Schrammel , Stefan Mangard

Many important security problems in JavaScript, such as browser extension security, untrusted JavaScript libraries and safe integration of mutually distrustful websites (mash-ups), may be effectively addressed using an efficient…

Programming Languages · Computer Science 2015-01-20 Stefan Heule , Deian Stefan , Edward Z. Yang , John C. Mitchell , Alejandro Russo

Information flow analysis is a powerful technique for reasoning about the sensitive information exposed by a program during its execution. While past work has proposed information theoretic metrics (e.g., Shannon entropy, min-entropy,…

Cryptography and Security · Computer Science 2010-09-22 Ji Zhu , Mudhakar Srivatsa

We present Labeled Input Output in F* (LIO*), a verified framework that enforces information flow control (IFC) policies developed in F* and automatically extracted to C. Inspired by LIO, we encapsulated IFC policies into effects, but using…

Cryptography and Security · Computer Science 2020-04-29 Jean-Joseph Marty , Lucas Franceschino , Jean-Pierre Talpin , Niki Vazou

Cryptographic access control has been studied for over 30 years and is now a mature research topic. When symmetric cryptographic primitives are used, each protected resource is encrypted and only authorized users should have access to the…

Cryptography and Security · Computer Science 2015-06-02 Jason Crampton , Naomi Farley , Gregory Gutin , Mark Jones , Bertram Poettering