Patent ID: 11949770
Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 6:
7. The confidential classification platform according to claim 5, wherein the classifier is configured to compute in the homomorphic domain a scalar product of the discriminative characteristic vector, y, with the reference characteristic vectors from the cleartext components (y1, . . . , yM) of the discriminative characteristic vector, and the encrypted components of the reference characteristic vectors, using, Enc
   ⁡
   (
   
    
     
      ∑
      
       i
       =
       1
      
      M
     
     
      
       y
       
        i
        ,
        m
       
       ref
      
      ⁢
      
       y
       m
      
     
    
    ;
    
     
      HE
      .
      p
     
     ⁢
     k
    
   
   )
  
  =
  
   (
   
    
     ⊕
     
      
       m
       =
       1
      
      ,
        
      …
        
      ,
      M
     
    
    
     (
     
      
       Enc
       ⁡
       (
       
        
         y
         
          i
          ,
          m
         
         ref
        
        ,
        
         
          HE
          .
          p
         
         ⁢
         k
        
       
       )
      
      ⊗
      
       y
       m
      
     
     )
    
   
   )
  
 

where ⊕ is an internal addition operation in the homomorphic domain and ⊗ is an external multiplication operation between an element of the homomorphic domain and a cleartext.