Research on cross-border data supervision technology based on blockchain and proxy re-encryption
Online published: 2026-05-13
Copyright
In the context of economic globalization, multinational corporations are increasingly conducting cross-border data transmission activities, and irregular operations of enterprises during data transmission are likely to cause personal privacy leakage and national security risks. How to protect the privacy of enterprises' cross-border data while ensuring the effectiveness and traceability of regulatory procedures has become a key issue to be solved urgently. To this end, a cross-border data supervision technology based on blockchain and proxy re-encryption is proposed. Blockchain nodes are introduced as auditable third parties to perform proxy re-encryption on the ciphertext obtained by regulators through random inspection, which enables regulators to complete operational compliance verification without full plaintext monitoring. Dual goals of enterprise privacy protection and regulatory efficiency improvement are achieved through this scheme, and a verifiable, trustworthy and traceable audit evidence chain is formed simultaneously. Finally, the security and performance of the proposed scheme are analyzed, and the results show that the scheme has high feasibility and practical application value in the government-led regulatory scenario of enterprise cross-border data transmission.
Key words: blockchain; proxy re-encryption; outbound data; data governance
Zhong Min , Cai Jiayin , Zhao Xingwen , Cao Jin . Research on cross-border data supervision technology based on blockchain and proxy re-encryption[J]. Journal of Cybersecurity, 2026 , 4(1) : 70 -79 . DOI: 10.20172/j.issn.2097-3136.260203
表 1 常用符号及说明Table 1 Common symbols and their definitions |
| 符号 | 说明 |
| 数据出境企业 | |
| 监管人员 | |
| 区块链节点 | |
| 系统安全参数 | |
| 出境密文 | |
| 数据出境企业的公私钥对 | |
| 监管人员的公私钥对 | |
| 抽检密文 | |
| 重加密密文 | |
| 抽检结果 | |
| 申请抽检时间戳 | |
| 抽检结果签名值 |
表 2 各方案性能开销对比Table 2 Performance overhead comparison of each scheme |
| 方案 | 初始加密 | 重加密 | 解密 |
| 文献[19] | |||
| 文献[20] | |||
| 文献[21] | | ||
| 文献[25] | | ||
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