Homomorphic ciphertext face hiding query method and system based on GPU
The invention discloses a GPU-based homomorphic ciphertext face hiding query method and system. The method comprises four parts of homomorphic encryption key generation, data coding and encryption, similarity homomorphic calculation and similarity decryption and decoding. The homomorphic encryption...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a GPU-based homomorphic ciphertext face hiding query method and system. The method comprises four parts of homomorphic encryption key generation, data coding and encryption, similarity homomorphic calculation and similarity decryption and decoding. The homomorphic encryption key generation is used for generating a key required by a homomorphic encryption algorithm for subsequent encryption and decryption; the data coding and encryption are used for coding and encrypting the face image feature vector in the database into a polynomial by using a homomorphic encryption algorithm; according to similarity homomorphic calculation, an encrypted feature vector and a coded detection vector are subjected to a homomorphic inner product algorithm; and the similarity decryption decoding is used for decrypting and decoding the similarity encrypted in a ciphertext polynomial into a plaintext, so that the privacy protection of face information is ensured, and safe data sharing and outsourcing calculat |
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