arXiv - CS - Programming Languages最新文献_第8页

From Program Logics to Language Logics 从程序逻辑到语言逻辑

arXiv - CS - Programming Languages Pub Date : 2024-08-02 DOI: arxiv-2408.01515

Matteo Cimini

引用次数: 0

Regrading Policies for Flexible Information Flow Control in Session-Typed Concurrency 会话类型并发中灵活信息流控制的重整策略

arXiv - CS - Programming Languages Pub Date : 2024-07-29 DOI: arxiv-2407.20410

Farzaneh Derakhshan, Stephanie Balzer, Yue Yao

{"title":"Regrading Policies for Flexible Information Flow Control in Session-Typed Concurrency","authors":"Farzaneh Derakhshan, Stephanie Balzer, Yue Yao","doi":"arxiv-2407.20410","DOIUrl":"https://doi.org/arxiv-2407.20410","url":null,"abstract":"Noninterference guarantees that an attacker cannot infer secrets by\u0000interacting with a program. Information flow control (IFC) type systems assert\u0000noninterference by tracking the level of information learned (pc) and\u0000disallowing communication to entities of lesser or unrelated level than the pc.\u0000Control flow constructs such as loops are at odds with this pattern because\u0000they necessitate downgrading the pc upon recursion to be practical. In a\u0000concurrent setting, however, downgrading is not generally safe. This paper\u0000utilizes session types to track the flow of information and contributes an IFC\u0000type system for message-passing concurrent processes that allows downgrading\u0000the pc upon recursion. To make downgrading safe, the paper introduces regrading\u0000policies. Regrading policies are expressed in terms of integrity labels, which\u0000are also key to safe composition of entities with different regrading policies.\u0000The paper develops the type system and proves progress-sensitive\u0000noninterference for well-typed processes, ruling out timing attacks that\u0000exploit the relative order of messages. The type system has been implemented in\u0000a type checker, which supports security-polymorphic processes using local\u0000security theories.","PeriodicalId":501197,"journal":{"name":"arXiv - CS - Programming Languages","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Formal Foundations for Translational Separation Logic Verifiers (extended version) 翻译分离逻辑验证器的形式基础（扩展版）

arXiv - CS - Programming Languages Pub Date : 2024-07-29 DOI: arxiv-2407.20002

Thibault DardinierETH Zurich, Michael SammlerETH Zurich, Gaurav ParthasarathyETH Zurich, Alexander J. SummersUniversity of British Columbia, Peter MüllerETH Zurich

{"title":"Formal Foundations for Translational Separation Logic Verifiers (extended version)","authors":"Thibault DardinierETH Zurich, Michael SammlerETH Zurich, Gaurav ParthasarathyETH Zurich, Alexander J. SummersUniversity of British Columbia, Peter MüllerETH Zurich","doi":"arxiv-2407.20002","DOIUrl":"https://doi.org/arxiv-2407.20002","url":null,"abstract":"Program verification tools are often implemented as front-end translations of\u0000an input program into an intermediate verification language (IVL) such as\u0000Boogie, GIL, Viper, or Why3. The resulting IVL program is then verified using\u0000an existing back-end verifier. A soundness proof for such a translational\u0000verifier needs to relate the input program and verification logic to the\u0000semantics of the IVL, which in turn needs to be connected with the verification\u0000logic implemented in the back-end verifiers. Performing such proofs is\u0000challenging due to the large semantic gap between the input and output programs\u0000and logics, especially for complex verification logics such as separation\u0000logic. This paper presents a formal framework for reasoning about translational\u0000separation logic verifiers. At its center is a generic core IVL that captures\u0000the essence of different separation logics. We define its operational semantics\u0000and formally connect it to two different back-end verifiers, which use symbolic\u0000execution and verification condition generation, resp. Crucially, this\u0000semantics uses angelic non-determinism to enable the application of different\u0000proof search algorithms and heuristics in the back-end verifiers. An axiomatic\u0000semantics for the core IVL simplifies reasoning about the front-end translation\u0000by performing essential proof steps once and for all in the equivalence proof\u0000with the operational semantics rather than for each concrete front-end\u0000translation. We illustrate the usefulness of our formal framework by instantiating our\u0000core IVL with elements of Viper and connecting it to two Viper back-ends as\u0000well as a front-end for concurrent separation logic. All our technical results\u0000have been formalized in Isabelle/HOL, including the core IVL and its semantics,\u0000the semantics of two back-ends for a subset of Viper, and all proofs.","PeriodicalId":501197,"journal":{"name":"arXiv - CS - Programming Languages","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Detecting and explaining (in)equivalence of context-free grammars 检测和解释无上下文语法的（不）等价性

arXiv - CS - Programming Languages Pub Date : 2024-07-25 DOI: arxiv-2407.18220

Marko Schmellenkamp, Thomas Zeume, Sven Argo, Sandra Kiefer, Cedric Siems, Fynn Stebel

引用次数: 0

SPLAT: A framework for optimised GPU code-generation for SParse reguLar ATtention SPLAT：优化 GPU 代码生成以实现稀疏重组的框架

arXiv - CS - Programming Languages Pub Date : 2024-07-23 DOI: arxiv-2407.16847

Ahan Gupta, Yueming Yuan, Devansh Jain, Yuhao Ge, David Aponte, Yanqi Zhou, Charith Mendis

{"title":"SPLAT: A framework for optimised GPU code-generation for SParse reguLar ATtention","authors":"Ahan Gupta, Yueming Yuan, Devansh Jain, Yuhao Ge, David Aponte, Yanqi Zhou, Charith Mendis","doi":"arxiv-2407.16847","DOIUrl":"https://doi.org/arxiv-2407.16847","url":null,"abstract":"Multi-head-self-attention (MHSA) mechanisms achieve state-of-the-art (SOTA)\u0000performance across natural language processing and vision tasks. However, their\u0000quadratic dependence on sequence lengths has bottlenecked inference speeds. To\u0000circumvent this bottleneck, researchers have proposed various sparse-MHSA\u0000models, where a subset of full attention is computed. Despite their promise,\u0000current sparse libraries and compilers do not support high-performance\u0000implementations for diverse sparse-MHSA patterns due to the underlying sparse\u0000formats they operate on. These formats, which are typically designed for\u0000high-performance & scientific computing applications, are either curated for\u0000extreme amounts of random sparsity (<1% non-zero values), or specific sparsity\u0000patterns. However, the sparsity patterns in sparse-MHSA are moderately sparse\u0000(10-50% non-zero values) and varied, resulting in existing sparse-formats\u0000trading off generality for performance. We bridge this gap, achieving both generality and performance, by proposing a\u0000novel sparse format: affine-compressed-sparse-row (ACSR) and supporting\u0000code-generation scheme, SPLAT, that generates high-performance implementations\u0000for diverse sparse-MHSA patterns on GPUs. Core to our proposed format and code\u0000generation algorithm is the observation that common sparse-MHSA patterns have\u0000uniquely regular geometric properties. These properties, which can be analyzed\u0000just-in-time, expose novel optimizations and tiling strategies that SPLAT\u0000exploits to generate high-performance implementations for diverse patterns. To\u0000demonstrate SPLAT's efficacy, we use it to generate code for various\u0000sparse-MHSA models, achieving geomean speedups of 2.05x and 4.05x over\u0000hand-written kernels written in triton and TVM respectively on A100 GPUs.\u0000Moreover, its interfaces are intuitive and easy to use with existing\u0000implementations of MHSA in JAX.","PeriodicalId":501197,"journal":{"name":"arXiv - CS - Programming Languages","volume":"141 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141785469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Language-Based Security for Low-Level MPC 基于语言的低级多用途运算引擎安全性

arXiv - CS - Programming Languages Pub Date : 2024-07-23 DOI: arxiv-2407.16504

Christian Skalka, Joseph P. Near

引用次数: 0

Preventing Out-of-Gas Exceptions by Typing 通过键入防止气源异常

arXiv - CS - Programming Languages Pub Date : 2024-07-22 DOI: arxiv-2407.15676

Luca Aceto, Daniele Gorla, Stian Lybech, Mohammad Hamdaqa

引用次数: 0

SNIP: Speculative Execution and Non-Interference Preservation for Compiler Transformations SNIP：编译器转换的推测性执行和非干涉保护

arXiv - CS - Programming Languages Pub Date : 2024-07-21 DOI: arxiv-2407.15080

Sören van der Wall, Roland Meyer

{"title":"SNIP: Speculative Execution and Non-Interference Preservation for Compiler Transformations","authors":"Sören van der Wall, Roland Meyer","doi":"arxiv-2407.15080","DOIUrl":"https://doi.org/arxiv-2407.15080","url":null,"abstract":"We address the problem of preserving non-interference across compiler\u0000transformations under speculative semantics. We develop a proof method that\u0000ensures the preservation uniformly across all source programs. The basis of our\u0000proof method is a new form of simulation relation. It operates over directives\u0000that model the attacker's control over the micro-architectural state, and it\u0000accounts for the fact that the compiler transformation may change the influence\u0000of the micro-architectural state on the execution (and hence the directives).\u0000Using our proof method, we show the correctness of dead code elimination. When\u0000we tried to prove register allocation correct, we identified a previously\u0000unknown weakness that introduces violations to non-interference. We have\u0000confirmed the weakness for a mainstream compiler on code from the libsodium\u0000cryptographic library. To reclaim security once more, we develop a novel static\u0000analysis that operates on a product of source program and register-allocated\u0000program. Using the analysis, we present an automated fix to existing register\u0000allocation implementations. We prove the correctness of the fixed register\u0000allocations with our proof method.","PeriodicalId":501197,"journal":{"name":"arXiv - CS - Programming Languages","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141785247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Describe Data to get Science-Data-Ready Tooling: Awkward as a Target for Kaitai Struct YAML 描述数据，获取科学数据就绪工具：作为开泰结构 YAML 目标的尴尬

arXiv - CS - Programming Languages Pub Date : 2024-07-19 DOI: arxiv-2407.14461

Manasvi Goyal, Andrea Zonca, Amy Roberts, Jim Pivarski, Ianna Osborne

{"title":"Describe Data to get Science-Data-Ready Tooling: Awkward as a Target for Kaitai Struct YAML","authors":"Manasvi Goyal, Andrea Zonca, Amy Roberts, Jim Pivarski, Ianna Osborne","doi":"arxiv-2407.14461","DOIUrl":"https://doi.org/arxiv-2407.14461","url":null,"abstract":"In some fields, scientific data formats differ across experiments due to\u0000specialized hardware and data acquisition systems. Researchers need to develop,\u0000document, and maintain experiment-specific analysis software to interact with\u0000these data formats. These software are often tightly coupled with a particular\u0000data format. This proliferation of custom data formats has been a prominent\u0000challenge for small to mid-scale experiments. The widespread adoption of ROOT\u0000has largely mitigated this problem for the Large Hadron Collider experiments.\u0000However, many smaller experiments continue to use custom data formats to meet\u0000specific research needs. Therefore, simplifying the process of accessing a\u0000unique data format for analysis holds immense value for scientific communities\u0000within HEP. We have added Awkward Arrays as a target language for Kaitai Struct\u0000for this purpose. Researchers can describe their custom data format in the\u0000Kaitai Struct YAML (KSY) language. The Kaitai Struct Compiler generates C++\u0000code to fill the LayoutBuilder buffers using the KSY format. In a few steps,\u0000the Kaitai Struct Awkward Runtime API can convert the generated C++ code into a\u0000compiled Python module. Finally, the raw data can be passed to the module to\u0000produce Awkward Arrays. This paper introduces the Awkward Target for the Kaitai\u0000Struct Compiler and the Kaitai Struct Awkward Runtime API. It also demonstrates\u0000the conversion of a given KSY for a specific custom file format to Awkward\u0000Arrays.","PeriodicalId":501197,"journal":{"name":"arXiv - CS - Programming Languages","volume":"181 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141737354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Approximate Relational Reasoning for Higher-Order Probabilistic Programs 高阶概率程序的近似关系推理

arXiv - CS - Programming Languages Pub Date : 2024-07-19 DOI: arxiv-2407.14107

Philipp G. Haselwarter, Kwing Hei Li, Alejandro Aguirre, Simon Oddershede Gregersen, Joseph Tassarotti, Lars Birkedal

{"title":"Approximate Relational Reasoning for Higher-Order Probabilistic Programs","authors":"Philipp G. Haselwarter, Kwing Hei Li, Alejandro Aguirre, Simon Oddershede Gregersen, Joseph Tassarotti, Lars Birkedal","doi":"arxiv-2407.14107","DOIUrl":"https://doi.org/arxiv-2407.14107","url":null,"abstract":"Properties such as provable security and correctness for randomized programs\u0000are naturally expressed relationally as approximate equivalences. As a result,\u0000a number of relational program logics have been developed to reason about such\u0000approximate equivalences of probabilistic programs. However, existing\u0000approximate relational logics are mostly restricted to first-order programs\u0000without general state. In this paper we develop Approxis, a higher-order approximate relational\u0000separation logic for reasoning about approximate equivalence of programs\u0000written in an expressive ML-like language with discrete probabilistic sampling,\u0000higher-order functions, and higher-order state. The Approxis logic recasts the\u0000concept of error credits in the relational setting to reason about relational\u0000approximation, which allows for expressive notions of modularity and\u0000composition, a range of new approximate relational rules, and an\u0000internalization of a standard limiting argument for showing exact probabilistic\u0000equivalences by approximation. We also use Approxis to develop a logical\u0000relation model that quantifies over error credits, which can be used to prove\u0000exact contextual equivalence. We demonstrate the flexibility of our approach on\u0000a range of examples, including the PRP/PRF switching lemma, IND$-CPA security\u0000of an encryption scheme, and a collection of rejection samplers. All of the\u0000results have been mechanized in the Coq proof assistant and the Iris separation\u0000logic framework.","PeriodicalId":501197,"journal":{"name":"arXiv - CS - Programming Languages","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141737353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0