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一个优化的新型轻量级块密码,用于图像加密
R Mohanapriya1, Kumar V Nithish2
1School of Electronics Engineering, Vellore Institute of Technology, Vellore, Tamilnadu, 632014, India.
Scientific reports
|October 15, 2025
概括
一个新的轻量级块密码为资源有限的设备提供了高效和安全的图像加密. 它的新设计提供了对加密分析的强有力的保护,平衡安全需求与实际实施. 这有助于提高多媒体数据的安全性.
科学领域:
- 计算机科学 计算机科学
- 密码学 密码学 密码学 密码学
- 信息安全 信息安全
背景情况:
- 多媒体通信在很大程度上依赖于各种平台的图像数据.
- 资源有限的环境面临着传统,计算密集型的图像保护加密解决方案的挑战.
- 轻量级的加密算法对于有效保护图像数据至关重要.
研究的目的:
- 提出一种新的轻量级区块密码,专门针对图像加密进行优化.
- 解决嵌入式,移动和物联网平台上保护图像数据的安全性和效率挑战.
- 开发一个加密系统,平衡严格的安全性和高效的实施.
主要方法:
- 设计了一种轻量级的区块密码,使用多阶段的内部添加-旋转-XOR (ARX) 结构.
- 实现了一个定制的密钥计划,通过比特交换,模块化添加和XOR每轮生成五个子密钥.
- 使用NIST SP 800-22评估密码特性,雪崩效应,差异概率和线性偏差.
- 经过五轮的测试,对微分和线性加密分析的抗性进行了测试.
- 在Artix-7 FPGA上实现了加密算法,用于资源有限的环境.
主要成果:
- 该密码显示了高键随机性和50%的平均雪崩效应.
- 实现了对差异和线性加密分析的强烈抵抗,具有低差异概率和线性偏差.
- 统计分析证实了在各种图像中保护视觉数据的稳定性.
- FPGA的实现证实了其适用于资源有限的环境,并显示了高效的硬件实现.
结论:
- 拟议的轻量级块密码为图像加密提供了安全高效的解决方案.
- 它有效地平衡了高安全要求与嵌入式和移动平台的限制.
- 该密码非常适合在现代多媒体通信系统中保护视觉数据.
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