Notes

• Existing batch encryption schemes rely on epochs or suffer from large public parameters (quadratic) and censorship vulnerability.
• New scheme is epochless with linear-sized public parameters and constant-sized pre-decryption keys and ciphertexts.
• Uses partial fraction decomposition: a single group element as pre-decryption key decrypts all batch ciphertexts.
• Proves CCA security and shows how to thresholdize the scheme.
• Directly benefits applications like encrypted mempools for MEV mitigation and time-lock encrypted storage.
• Extends partial fraction techniques from Jutla, Nema, and Roy's threshold encryption scheme.

• 现有批处理加密方案依赖时段或存在公共参数过大（二次方增长）和审查脆弱性问题
• 新方案无时段依赖，具有线性大小的公共参数和恒定大小的预解密密钥与密文
• 利用部分分数分解技术，单个群元素作为预解密密钥即可解密批次内所有密文
• 证明了方案的CCA安全性，并展示了如何实现阈值化
• 直接适用于加密内存池（MEV缓解）和时间锁定加密存储等应用
• 基于Jutla、Nema和Roy的阈值加密方案中的部分分数技术进行扩展