Harnessing Lightweight Ciphers for PDF Encryption

arXiv - CS - Cryptography and Security Pub Date : 2024-09-14 DOI:arxiv-2409.09428

Aastha Chauhan, Deepa Verma

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Abstract

Portable Document Format (PDF) is a file format which is used worldwide as de-facto standard for exchanging documents. In fact this document that you are currently reading has been uploaded as a PDF. Confidential information is also exchanged through PDFs. According to PDF standard ISO 3000-2:2020, PDF supports encryption to provide confidentiality of the information contained in it along with digital signatures to ensure authenticity. At present, PDF encryption only supports Advanced Encryption Standard (AES) to encrypt and decrypt information. However, Lightweight Cryptography, which is referred to as crypto for resource constrained environments has gained lot of popularity specially due to the NIST Lightweight Cryptography (LWC) competition announced in 2018 for which ASCON was announced as the winner in February 2023. The current work constitutes the first attempt to benchmark Java implementations of NIST LWC winner ASCON and finalist XOODYAK against the current PDF encryption standard AES. Our research reveals that ASCON emerges as a clear winner with regards to throughput when profiled using two state-of-the-art benchmarking tools YourKit and JMH.

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利用轻量级密码进行 PDF 加密

便携式文档格式（PDF）是一种文件格式，在全球范围内被用作交换文件的事实标准。事实上，您正在阅读的这份文件就是以 PDF 格式上传的。机密信息也通过 PDF 文件进行交换。根据 PDF 标准 ISO 3000-2:2020，PDF 支持加密以提供其中所含信息的保密性，并支持数字签名以确保真实性。目前，PDF 加密仅支持高级加密标准（AES）来加密和解密信息。然而，轻量级密码学（被称为资源受限环境下的密码学）已经获得了广泛的欢迎，特别是由于 2018 年宣布的 NISTLightweight Cryptography（LWC）竞赛，ASCON 于 2023 年 2 月被宣布为该竞赛的获胜者。目前的工作是首次尝试将 NIST LWC 获奖者 ASCON 和决赛选手 XOODYAK 的 Java 实现与当前的 PDF 加密标准 AES 进行基准测试。我们的研究表明，在使用 YourKit 和 JMH 这两种最先进的基准测试工具进行测试时，ASCON 在吞吐量方面明显胜出。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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arXiv - CS - Cryptography and Security

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