A CCA-secure and interoperable cross-domain distribution protocol for E_document

作者：Yan Xixi^*; Ma Zhaofeng; Yang Yixian; Niu Xinxin

来源：Advances in Information Sciences and Service Sciences, 2012, 4(1): 311-319.

DOI：10.4156/AISS.vol4.issue1.40

• CCA-secure
• Chosen ciphertext attack
• Ciphertexts
• Cross-domain
• Distribution protocols
• Document sharing
• E_document distribution
• Encryption/decryption
• Existing systems
• Multi domains
• Plaintext
• Proxy server
• Public keys
• Re-encryption
• System servers
• Third parties

To assure secure document sharing and distribution with high efficiency and good scalability in the multi-domain environment, a CCA-secure (Chosen ciphertext attack) and interoperable cross-domain distribution protocol for E_document will be proposed in the paper. In order that any third party (such as server, proxy server, and any other users) obtains the document plaintext, the proxy server will be deployed to re-encrypt the ciphertext of content keys. In the scheme, proxy server can transform a document ciphertext encrypted under system server's public key into the ciphertext encrypted under user's public key without system server's encryption, so the document plaintext can be only operated by user, and proxy server can't learn anything about the plaintext. Compared with the existing system, our scheme relieves the server from intense encryption /decryption processing, and enable the document transmission by ciphertext in the cross-domain distribution.

• 出版日期2012
• 单位北京大学