加密域中可分离可逆数据隐藏的通用安全加密算法

IF 5.2 2区 计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS
Hongli Wan, Minqing Zhang, Yan Ke, Zongbao Jiang, Fuqiang Di
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引用次数: 0

摘要

加密域中的可分离可逆数据隐藏(RDH-ED)算法在加密前后都留出了信息的嵌入空间,使提取信息和还原图像的操作互不干扰。所采用的加密方法不仅会影响信息的嵌入空间和可分离性,而且对确保安全性更为关键。然而,常用的 XOR、加扰或组合方法在安全性方面存在不足,尤其是在应对已知明文攻击(KPA)时。因此,为了提高 RDH-ED 的安全性和广泛适用性,本文提出了一种可用于加密前预留空间(RSBE)和加密后释放空间(FSAE)的高安全性 RDH-ED 加密算法。在加密过程中,图像依次经过块 XOR、全局块内位平面加扰(GIBS)和块间加扰。GIBS 密钥通过混沌映射变换创建。随后,提出了两种基于这种加密的 RDH-ED 算法。实验结果表明,本文概述的算法能在密钥转换后保持一致的密钥通信流量。此外,该算法的计算复杂度保持在恒定水平,满足可分性标准,同时适用于 RSBE 和 FSAE 方法。同时,在满足单一加密技术安全性的同时,我们还将密钥空间扩展到了 28Np×Np!×8!Np,从而能够抵御现有的各种攻击方法。值得注意的是,特别是在 KPA 测试场景中,平均解密成功率仅为 0.0067% 和 0.0045%,彰显了其卓越的安全性。总之,这个几乎牢不可破的系统在保持适当嵌入容量的同时,大大增强了图像的安全性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
General secure encryption algorithm for separable reversible data hiding in encrypted domain
The separable reversible data hiding in encrypted domain (RDH-ED) algorithm leaves out the embedding space for the information before or after encryption and makes the operation of extracting the information and restoring the image not interfere with each other. The encryption method employed not only affects the embedding space of the information and separability, but is more crucial for ensuring security. However, the commonly used XOR, scram-bling or combination methods fall short in security, especially against known plaintext attack (KPA). Therefore, in order to improve the security of RDH-ED and be widely applicable, this paper proposes a high-security RDH-ED encryption algorithm that can be used to reserve space before encryption (RSBE) and free space after encryption (FSAE). During encryption, the image undergoes block XOR, global intra-block bit-plane scrambling (GIBS) and inter-block scrambling sequentially. The GIBS key is created through chaotic mapping transformation. Subsequently, two RDH-ED algorithms based on this encryption are proposed. Experimental results indicate that the algorithm outlined in this paper maintains consistent key communication traffic post key conversion. Additionally, its computational complexity remains at a constant level, satisfying separability criteria, and is suitable for both RSBE and FSAE methods. Simultaneously, while satisfying the security of a single encryption technique, we have expanded the key space to 28Np×Np!×8!Np, enabling resilience against various existing attack methods. Notably, particularly in KPA testing scenarios, the average decryption success rate is a mere 0.0067% and 0.0045%, highlighting its exceptional security. Overall, this virtually unbreakable system significantly enhances image security while preserving an appropriate embedding capacity.
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来源期刊
CiteScore
10.50
自引率
8.70%
发文量
656
审稿时长
29 days
期刊介绍: In 2022 the Journal of King Saud University - Computer and Information Sciences will become an author paid open access journal. Authors who submit their manuscript after October 31st 2021 will be asked to pay an Article Processing Charge (APC) after acceptance of their paper to make their work immediately, permanently, and freely accessible to all. The Journal of King Saud University Computer and Information Sciences is a refereed, international journal that covers all aspects of both foundations of computer and its practical applications.
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