Threshold Encryption using BLS? - Security - Ethereum Research


    
    
  
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      Threshold Encryption using BLS?
    


      
          
            
              
              
                Security
              
            
            



      

        

            

            
              
                kladkogex
                
              

              



              
                  
                    February 26, 2019, 11:47am
                  
                  

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              At Skale, we need to do threshold encryption in our PoS chains in order to provide protections against front running (essentially a transaction is submitted to the chain in encrypted form, and then decrypted after it has been committed.

We already have BLS signatures implemented in a way compatible to precompiles from ETH 1.0. I am looking for a spec to implement threshold encrypt/decrypt using the same primitives and pairing used in BLS signatures.

            


            
              

            

            
                

            
              
                lithp
                
              

              



              
                  
                    February 24, 2022,  4:52am
                  
                  

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              Years have passed but for future travellers this scheme seems relevant to the question. Using something like this anyone can encrypt their transactions and a threshold of peers is required to decrypt those transactions and it all happens with the BLS machinery.

            


            
              

            

            
                
	
        
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