What is the purpose of Homomorphic encryption?

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Homogeneous cryptography is a kind of cryptography that allows you to do special math operations on the ciphertext, and the maths performed are identical to the obvious ones. For example, one person can combine two cached numbers, and decode the result, the sum will be two numbers. Among the commonly used cryptographic applications, one can refer to secure voting systems.Homomorphic encryption



  • What is the purpose of Homomorphic encryption?

  • How can it create secure systems such as secure voting systems?









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  • Could you provide reference to Homogeneous cryptography, please?
    – Hilder Vitor Lima Pereira
    3 hours ago










  • You made an edit in which you added a link to Wikipedia's article about Homomorphic Encryption. But what do you mean by Homogeneous cryptography?
    – Hilder Vitor Lima Pereira
    38 mins ago










  • @HilderVitorLimaPereira my question is about: How can it create secure systems such as secure voting systems?
    – R1w
    34 mins ago














up vote
3
down vote

favorite
1












Homogeneous cryptography is a kind of cryptography that allows you to do special math operations on the ciphertext, and the maths performed are identical to the obvious ones. For example, one person can combine two cached numbers, and decode the result, the sum will be two numbers. Among the commonly used cryptographic applications, one can refer to secure voting systems.Homomorphic encryption



  • What is the purpose of Homomorphic encryption?

  • How can it create secure systems such as secure voting systems?









share|improve this question























  • Could you provide reference to Homogeneous cryptography, please?
    – Hilder Vitor Lima Pereira
    3 hours ago










  • You made an edit in which you added a link to Wikipedia's article about Homomorphic Encryption. But what do you mean by Homogeneous cryptography?
    – Hilder Vitor Lima Pereira
    38 mins ago










  • @HilderVitorLimaPereira my question is about: How can it create secure systems such as secure voting systems?
    – R1w
    34 mins ago












up vote
3
down vote

favorite
1









up vote
3
down vote

favorite
1






1





Homogeneous cryptography is a kind of cryptography that allows you to do special math operations on the ciphertext, and the maths performed are identical to the obvious ones. For example, one person can combine two cached numbers, and decode the result, the sum will be two numbers. Among the commonly used cryptographic applications, one can refer to secure voting systems.Homomorphic encryption



  • What is the purpose of Homomorphic encryption?

  • How can it create secure systems such as secure voting systems?









share|improve this question















Homogeneous cryptography is a kind of cryptography that allows you to do special math operations on the ciphertext, and the maths performed are identical to the obvious ones. For example, one person can combine two cached numbers, and decode the result, the sum will be two numbers. Among the commonly used cryptographic applications, one can refer to secure voting systems.Homomorphic encryption



  • What is the purpose of Homomorphic encryption?

  • How can it create secure systems such as secure voting systems?






encryption homomorphic-encryption






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edited 3 hours ago

























asked 3 hours ago









R1w

37417




37417











  • Could you provide reference to Homogeneous cryptography, please?
    – Hilder Vitor Lima Pereira
    3 hours ago










  • You made an edit in which you added a link to Wikipedia's article about Homomorphic Encryption. But what do you mean by Homogeneous cryptography?
    – Hilder Vitor Lima Pereira
    38 mins ago










  • @HilderVitorLimaPereira my question is about: How can it create secure systems such as secure voting systems?
    – R1w
    34 mins ago
















  • Could you provide reference to Homogeneous cryptography, please?
    – Hilder Vitor Lima Pereira
    3 hours ago










  • You made an edit in which you added a link to Wikipedia's article about Homomorphic Encryption. But what do you mean by Homogeneous cryptography?
    – Hilder Vitor Lima Pereira
    38 mins ago










  • @HilderVitorLimaPereira my question is about: How can it create secure systems such as secure voting systems?
    – R1w
    34 mins ago















Could you provide reference to Homogeneous cryptography, please?
– Hilder Vitor Lima Pereira
3 hours ago




Could you provide reference to Homogeneous cryptography, please?
– Hilder Vitor Lima Pereira
3 hours ago












You made an edit in which you added a link to Wikipedia's article about Homomorphic Encryption. But what do you mean by Homogeneous cryptography?
– Hilder Vitor Lima Pereira
38 mins ago




You made an edit in which you added a link to Wikipedia's article about Homomorphic Encryption. But what do you mean by Homogeneous cryptography?
– Hilder Vitor Lima Pereira
38 mins ago












@HilderVitorLimaPereira my question is about: How can it create secure systems such as secure voting systems?
– R1w
34 mins ago




@HilderVitorLimaPereira my question is about: How can it create secure systems such as secure voting systems?
– R1w
34 mins ago










2 Answers
2






active

oldest

votes

















up vote
1
down vote



accepted










Homomorphic encryption let's you encrypt data, do operations / calculations with it such that when you decrypt the result, it's as if the same operations were done on the plaintext instead of the cyphertext.



The use of this is that untrusted parties can do computation on sensitive data.



This lets you use computing power of people you might not trust with your data, like using publically available cloud computing services on your personal financial data.



Another usage case if it ever gets more applicable is in video games.



Some type of games (specifically real time strategy games) are programmed such that every player needs to know about every other player's data due to being a deterministic simulation. Homomorphic encryption would allow deterministic simulation without players being able to cheat and get info about what other players are doing.






share|improve this answer
















  • 1




    The "use computing power of people you might not trust" thing is largely theoretical. Problem is, encryption and decryption of the data tends to be a more expensive than the calculation itself would be, and the computing power needed by the untrusted party a lot more expensive.
    – fgrieu
    46 mins ago

















up vote
1
down vote













First, I just copy-paste the introduction of homomorphic encryption from Wikipedia here




Homomorphic encryption is a form of encryption that allows computation on ciphertexts, generating an encrypted result which, when decrypted, matches the result of the operations as if they had been performed on the plaintext. The purpose of homomorphic encryption is to allow computation on encrypted data.




For its applications (which demonstrate its purpose), here is Gentry's introduction in his famous thesis:




Fully homomorphic encryption has numerous applications. For example, it enables private queries to a search engine – the user submits an encrypted query and the search engine computes a succinct encrypted answer without ever looking at the query in the clear. It also enables searching on encrypted data – a user stores encrypted files on a remote file server and can later have the server retrieve only files that (when decrypted) satisfy some boolean constraint, even though the server cannot decrypt the files on its own. More broadly, fully homomorphic encryption improves the efficiency of secure multiparty computation.




Finally, homomorphic encryption is only part of secure voting systems. See here: Homomorphic encryption used for e-voting?






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    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes








    up vote
    1
    down vote



    accepted










    Homomorphic encryption let's you encrypt data, do operations / calculations with it such that when you decrypt the result, it's as if the same operations were done on the plaintext instead of the cyphertext.



    The use of this is that untrusted parties can do computation on sensitive data.



    This lets you use computing power of people you might not trust with your data, like using publically available cloud computing services on your personal financial data.



    Another usage case if it ever gets more applicable is in video games.



    Some type of games (specifically real time strategy games) are programmed such that every player needs to know about every other player's data due to being a deterministic simulation. Homomorphic encryption would allow deterministic simulation without players being able to cheat and get info about what other players are doing.






    share|improve this answer
















    • 1




      The "use computing power of people you might not trust" thing is largely theoretical. Problem is, encryption and decryption of the data tends to be a more expensive than the calculation itself would be, and the computing power needed by the untrusted party a lot more expensive.
      – fgrieu
      46 mins ago














    up vote
    1
    down vote



    accepted










    Homomorphic encryption let's you encrypt data, do operations / calculations with it such that when you decrypt the result, it's as if the same operations were done on the plaintext instead of the cyphertext.



    The use of this is that untrusted parties can do computation on sensitive data.



    This lets you use computing power of people you might not trust with your data, like using publically available cloud computing services on your personal financial data.



    Another usage case if it ever gets more applicable is in video games.



    Some type of games (specifically real time strategy games) are programmed such that every player needs to know about every other player's data due to being a deterministic simulation. Homomorphic encryption would allow deterministic simulation without players being able to cheat and get info about what other players are doing.






    share|improve this answer
















    • 1




      The "use computing power of people you might not trust" thing is largely theoretical. Problem is, encryption and decryption of the data tends to be a more expensive than the calculation itself would be, and the computing power needed by the untrusted party a lot more expensive.
      – fgrieu
      46 mins ago












    up vote
    1
    down vote



    accepted







    up vote
    1
    down vote



    accepted






    Homomorphic encryption let's you encrypt data, do operations / calculations with it such that when you decrypt the result, it's as if the same operations were done on the plaintext instead of the cyphertext.



    The use of this is that untrusted parties can do computation on sensitive data.



    This lets you use computing power of people you might not trust with your data, like using publically available cloud computing services on your personal financial data.



    Another usage case if it ever gets more applicable is in video games.



    Some type of games (specifically real time strategy games) are programmed such that every player needs to know about every other player's data due to being a deterministic simulation. Homomorphic encryption would allow deterministic simulation without players being able to cheat and get info about what other players are doing.






    share|improve this answer












    Homomorphic encryption let's you encrypt data, do operations / calculations with it such that when you decrypt the result, it's as if the same operations were done on the plaintext instead of the cyphertext.



    The use of this is that untrusted parties can do computation on sensitive data.



    This lets you use computing power of people you might not trust with your data, like using publically available cloud computing services on your personal financial data.



    Another usage case if it ever gets more applicable is in video games.



    Some type of games (specifically real time strategy games) are programmed such that every player needs to know about every other player's data due to being a deterministic simulation. Homomorphic encryption would allow deterministic simulation without players being able to cheat and get info about what other players are doing.







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered 1 hour ago









    Alan Wolfe

    220112




    220112







    • 1




      The "use computing power of people you might not trust" thing is largely theoretical. Problem is, encryption and decryption of the data tends to be a more expensive than the calculation itself would be, and the computing power needed by the untrusted party a lot more expensive.
      – fgrieu
      46 mins ago












    • 1




      The "use computing power of people you might not trust" thing is largely theoretical. Problem is, encryption and decryption of the data tends to be a more expensive than the calculation itself would be, and the computing power needed by the untrusted party a lot more expensive.
      – fgrieu
      46 mins ago







    1




    1




    The "use computing power of people you might not trust" thing is largely theoretical. Problem is, encryption and decryption of the data tends to be a more expensive than the calculation itself would be, and the computing power needed by the untrusted party a lot more expensive.
    – fgrieu
    46 mins ago




    The "use computing power of people you might not trust" thing is largely theoretical. Problem is, encryption and decryption of the data tends to be a more expensive than the calculation itself would be, and the computing power needed by the untrusted party a lot more expensive.
    – fgrieu
    46 mins ago










    up vote
    1
    down vote













    First, I just copy-paste the introduction of homomorphic encryption from Wikipedia here




    Homomorphic encryption is a form of encryption that allows computation on ciphertexts, generating an encrypted result which, when decrypted, matches the result of the operations as if they had been performed on the plaintext. The purpose of homomorphic encryption is to allow computation on encrypted data.




    For its applications (which demonstrate its purpose), here is Gentry's introduction in his famous thesis:




    Fully homomorphic encryption has numerous applications. For example, it enables private queries to a search engine – the user submits an encrypted query and the search engine computes a succinct encrypted answer without ever looking at the query in the clear. It also enables searching on encrypted data – a user stores encrypted files on a remote file server and can later have the server retrieve only files that (when decrypted) satisfy some boolean constraint, even though the server cannot decrypt the files on its own. More broadly, fully homomorphic encryption improves the efficiency of secure multiparty computation.




    Finally, homomorphic encryption is only part of secure voting systems. See here: Homomorphic encryption used for e-voting?






    share|improve this answer
























      up vote
      1
      down vote













      First, I just copy-paste the introduction of homomorphic encryption from Wikipedia here




      Homomorphic encryption is a form of encryption that allows computation on ciphertexts, generating an encrypted result which, when decrypted, matches the result of the operations as if they had been performed on the plaintext. The purpose of homomorphic encryption is to allow computation on encrypted data.




      For its applications (which demonstrate its purpose), here is Gentry's introduction in his famous thesis:




      Fully homomorphic encryption has numerous applications. For example, it enables private queries to a search engine – the user submits an encrypted query and the search engine computes a succinct encrypted answer without ever looking at the query in the clear. It also enables searching on encrypted data – a user stores encrypted files on a remote file server and can later have the server retrieve only files that (when decrypted) satisfy some boolean constraint, even though the server cannot decrypt the files on its own. More broadly, fully homomorphic encryption improves the efficiency of secure multiparty computation.




      Finally, homomorphic encryption is only part of secure voting systems. See here: Homomorphic encryption used for e-voting?






      share|improve this answer






















        up vote
        1
        down vote










        up vote
        1
        down vote









        First, I just copy-paste the introduction of homomorphic encryption from Wikipedia here




        Homomorphic encryption is a form of encryption that allows computation on ciphertexts, generating an encrypted result which, when decrypted, matches the result of the operations as if they had been performed on the plaintext. The purpose of homomorphic encryption is to allow computation on encrypted data.




        For its applications (which demonstrate its purpose), here is Gentry's introduction in his famous thesis:




        Fully homomorphic encryption has numerous applications. For example, it enables private queries to a search engine – the user submits an encrypted query and the search engine computes a succinct encrypted answer without ever looking at the query in the clear. It also enables searching on encrypted data – a user stores encrypted files on a remote file server and can later have the server retrieve only files that (when decrypted) satisfy some boolean constraint, even though the server cannot decrypt the files on its own. More broadly, fully homomorphic encryption improves the efficiency of secure multiparty computation.




        Finally, homomorphic encryption is only part of secure voting systems. See here: Homomorphic encryption used for e-voting?






        share|improve this answer












        First, I just copy-paste the introduction of homomorphic encryption from Wikipedia here




        Homomorphic encryption is a form of encryption that allows computation on ciphertexts, generating an encrypted result which, when decrypted, matches the result of the operations as if they had been performed on the plaintext. The purpose of homomorphic encryption is to allow computation on encrypted data.




        For its applications (which demonstrate its purpose), here is Gentry's introduction in his famous thesis:




        Fully homomorphic encryption has numerous applications. For example, it enables private queries to a search engine – the user submits an encrypted query and the search engine computes a succinct encrypted answer without ever looking at the query in the clear. It also enables searching on encrypted data – a user stores encrypted files on a remote file server and can later have the server retrieve only files that (when decrypted) satisfy some boolean constraint, even though the server cannot decrypt the files on its own. More broadly, fully homomorphic encryption improves the efficiency of secure multiparty computation.




        Finally, homomorphic encryption is only part of secure voting systems. See here: Homomorphic encryption used for e-voting?







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 13 mins ago









        Shan Chen

        79039




        79039



























             

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