可验证的固定密文长度属性基加密方案

Verifiable outsourced decryption of attribute-based encryption with constant ciphertext length

基于属性的加密技术的一个主要缺点不得不被重视:解密计算代价随着访问结构的复杂性线性增长。通过使用代理重加密技术,基于属性的外包解密系统可以很大程度上降低用户想要访问以密文形式存储在云上的数据的计算代价。文中提出了一个新的可验证的具有固定密文长度的外包解密属性基加密方案。

One of attribute-based encryption（ ABE） technology＇s main performance challenges is that the complexity of decryption computation is linearly correlated with the access structure. By using the proxy re-encryption technology,outsourced decryption ABE system can largely reduce the computation cost for users who intend to access the encrypted files stored in cloud. This paper proposed a new verifiable outsourcing scheme with constant ciphertext length.