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¡ï ¡ï ¡ï ¡ï ¡ï ¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1 chzg99: ½ð±Ò+5, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2014-11-13 21:31:09 jssxh: LS-EPI+1, лл²ÎÓ룬Çë¼ÌÐø¹Ø×¢±¾°æ¿é 2014-11-14 09:53:06
A Fully Homomorphic Encryption Scheme with Better Key Size
×÷Õß:Chen, ZG (Chen Zhigang)[ 1,2,5 ] ; Wang, J (Wang Jian)[ 1 ] ; Zhang, ZN (Zhang ZengNian)[ 3 ] ; Song, XX (Song Xinxia)[ 4 ]
CHINA COMMUNICATIONS
¾í: 11 ÆÚ: 9 Ò³: 89-99
³ö°æÄê: SEP 2014
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Fully homomorphic encryption is faced with two problems now. One is candidate fully homomorphic encryption schemes are few. Another is that the efficiency of fully homomorphic encryption is a big question. In this paper, we propose a fully homomorphic encryption scheme based on LWE, which has better key size. Our main contributions are: (1) According to the binary-LWE recently, we choose secret key from binary set and modify the basic encryption scheme proposed in Linder and Peikert in 2010. We propose a fully homomorphic encryption scheme based on the new basic encryption scheme. We analyze the correctness and give the proof of the security of our scheme. The public key, evaluation keys and tensored ciphertext have better size in our scheme. (2) Estimating parameters for fully homomorphic encryption scheme is an important work. We estimate the concert parameters for our scheme. We compare these parameters between our scheme and Bra12 scheme. Our scheme have public key and private key that smaller by a factor of about logq than in Bra12 scheme. Tensored ciphertext in our scheme is smaller by a factor of about log2q than in Bra12 scheme. Key switching matrix in our scheme is smaller by a factor of about log3q than in Bra12 scheme.
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×÷Õ߹ؼü´Ê:fully homomorphic encryption; public key encryption; learning with error; concert parameters
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ͨѶ×÷ÕßµØÖ·: Chen, ZG (ͨѶ×÷Õß)
ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ Nanjing Univ Aeronaut & Astronaut, Coll Comp Sci & Technol, Nanjing 210016, Jiangsu, Peoples R China.
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ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ [ 1 ] Nanjing Univ Aeronaut & Astronaut, Coll Comp Sci & Technol, Nanjing 210016, Jiangsu, Peoples R China
[ 2 ] Zhejiang Wanli Univ, Coll Comp & Informat, Ningbo 315100, Zhejiang, Peoples R China
[ 3 ] Zhejiang Wanli Univ, Fac Elect & Informat Engn, Ningbo 315100, Zhejiang, Peoples R China
[ 4 ] Zhejiang Wanli Univ, Coll Jr, Ningbo 315100, Zhejiang, Peoples R China
ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ [ 5 ] Univ London, Informat Secur Grp, London WC1E 7HU, England
µç×ÓÓʼþµØÖ·:chzg99@21cn.com
»ù½ð×ÊÖúÖÂл
»ù½ð×ÊÖú»ú¹¹ ÊÚȨºÅ
Fund of Jiangsu Innovation Program for Graduate Education
CXLX12_0162
Fundamental Research Funds for the Central Universities
Ningbo Natural Science Foundation
2012A610067
Chinese National Scholarship fund
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CHINA INST COMMUNICATIONS, NO 13 WEST CHANG AN AVENUE, BEIJING, 00000, PEOPLES R CHINA
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Ñо¿·½Ïò:Telecommunications
Web of Science Àà±ð:Telecommunications
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ÎÄÏ×ÀàÐÍ:Article
ÓïÖÖ:English
Èë²ØºÅ: WOS:000342397200008
ISSN: 1673-5447
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IDS ºÅ: AP9JX
Web of Science ºËÐĺϼ¯ÖÐµÄ "ÒýÓõIJο¼ÎÄÏ×": 20
Web of Science ºËÐĺϼ¯ÖÐµÄ "±»ÒýƵ´Î": 0 |
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