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A comment on Google backs off on previously announced Allo privacy feature. Parent comment

Re:Google backs off on previously announced Allo privacy fea... by darawk on Wednesday September 21, 2016 @06:53PM (#12552990)
That is only true for fully homomorphic encryption. There are simpler cryptosystems (e.g. ElGamal for a trivial example) that have more constrained homomorphisms that theoretically could be used here.
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Re:Google backs off on previously announced Allo privacy fea... by KMag on Thursday September 22, 2016 @12:50PM (#12558178)
The OP was talking about encrypting the chat data and performing machine learning on encrypted data without decrypting it. I really wouldn't know where to begin to construct such a thing using a simpler cryptosystem, such as ElGamal. Do you have any hints as to where to begin?
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