@misc{cryptoeprint:2015:1149,
    author = {Takahiro Matsuda and Goichiro Hanaoka},
    title = {An Asymptotically Optimal Method for Converting Bit Encryption to Multi-Bit Encryption},
    howpublished = {Cryptology ePrint Archive, Report 2015/1149},
    year = {2015},
    url = {https://eprint.iacr.org/2015/1149},
}