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Author Topic: Encrypt/decrypt data on blockchain  (Read 313 times)
kaxynet (OP)
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September 07, 2017, 09:10:26 PM
 #1

Hi all , assuming this figure:

------------------------------------------------.
   Alice                                                     '
                                                               '
   .----------------------------- [Decrypted] <--- Bob <---------------------------[Decrypted]
   |                                                            '                                                    ^
   v                                                            '                                                    |
 (=?)              (Key)                                    '                                                   /
   |                    |                                       '                                                   /
   |                    v                                      '                    ----------------------  /        
  [Random] -->[ecrypt] --> [CypherText]  ---> Bob ----> |Contract/Script on |------> spend to Alice
                                                               '                    |   Blockchain         |
                                                              '                      ----------------------
-----------------------------------------------'                   (Cannot contain Key !!)


(Bob can only get the decrypted text that  Alice gave him unless he pay a contract that give Alice funds, WITHOUT involving Alice to be AWARE of the existance of a BLOCKCHAIN)

Is there any way to use  BTC or ETH or ZEC scripting/contracts , so i can decrypt data in a contract without showing the encryption key publicly ? I know that son Zero-Knowledge-Proof and Homomorphic encryption can be used in some how that i'm trying to make the model for that . Any suggestions ?
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