计算机工程与应用Issue(13)：15-20,6.DOI:10.3778/j.issn.1002-8331.1310-0397
基于同态加密的声纹模板设计及其分析
Homomorphic encryption scheme based voiceprint template design and analysis
摘要
Abstract
A voiceprint template protection method based on homomorphic encryption scheme is proposed, which takes the characteristics of speech features and Vector Quantization(VQ)speaker recognition algorithms into account. Voice-print features and codewords are transformed into non-negative integers. Components of Euclidean distance are calculated in the ciphertext domain by improved homomorphic encryption algorithm in the range of the integer. Decision is made according to the average minimum quantization error which is calculated with decrypting homomorphically component addition of VQ distance. The ciphers don’t leak the decimal fraction and sign information of plain text and can resist known plaintext attacks. The experimental results demonstrate the proposed method can keep the performance of authenti-cation system as the same as in the original feature domain.关键词
声纹/同态加密/模板保护/身份认证Key words
voiceprint/homomorphic encryption scheme/template protection/authentication分类
信息技术与安全科学引用本文复制引用
朱华虹,贺前华,李艳雄,潘伟锵..基于同态加密的声纹模板设计及其分析[J].计算机工程与应用,2014,(13):15-20,6.基金项目
国家自然科学基金（No.60972132，No.61101160）；广东省自然科学基金团队项目（No.9351064101000003）；广东省自然科学基金博士启动项目（No.10451064101004651）。 （）
