System and method for performing encrypted mixing based on big number format and additive homomorphism

• Main Authors: HSIEH, CHIA-YU, LIAO, SHENG-LIAN, CHANG, CHING-HSIUNG, HO, PEI-LING, LIN, YI-HSIU
• Format: Patent
• Language: Chinese; English
• Published: 16.04.2024
• Subjects: ACOUSTICS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; MUSICAL INSTRUMENTS; PHYSICS; SPEECH ANALYSIS OR SYNTHESIS; SPEECH OR AUDIO CODING OR DECODING; SPEECH OR VOICE PROCESSING; SPEECH RECOGNITION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

A system and a method for performing encrypted mixing based on big number format and additive homomorphism are provided. The method includes: performing a preprocessing-operation by a second-voice-information-processing-unit to obtain a voice-information-preprocessing-result, and storing the voice-information-preprocessing-result in a big number format; performing an encryption-operation on the voice-information-preprocessing-result by an encryption-and-transmission-unit to obtain an voice-information-encrypted-result in the big number format; performing an additive-homomorphism-operation on the voice-information-encrypted-result by a mixing-unit to obtain a mixed-ciphertext in the big number format; performing a decryption-operation on the mixed-ciphertext by a decryption-unit to obtain mixed-voice-information in the big number format; and performing a post-processing-operation on the mixed-voice-information by a first-voice-information-processing-unit to obtain a mixed-voice-information-post-processing-resu