Cryptology ePrint Archive: Report 2015/519

Notes on Two Fully Homomorphic Encryption Schemes Without Bootstrapping

Yongge Wang

Abstract: Recently, IACR ePrint archive posted two fully homomorphic encryption schemes without bootstrapping. In this note, we show that these schemes are trivially insecure. Furthermore, we also show that the encryption schemes of Liu and Wang in CCS 2012 and the encryption scheme of Liu, Bertino, and Xun in ASIACCS 2014 are insecure either.

Category / Keywords: public-key cryptography / fully homomorphic encryption

Date: received 29 May 2015, last revised 2 Jun 2015

Contact author: yonwang at uncc edu

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Version: 20150602:110407 (All versions of this report)

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