How can homomorphic encryption allow for secure computation on encrypted prompts

Question

Can you tell me How can homomorphic encryption allow for secure computation on encrypted prompts?

Answer 1

You can use homomorphic encryption to allow computations directly on encrypted prompts without decrypting them, preserving data privacy throughout processing.

Here is the code snippet below:

In the above code we are using the following key points:

• Pyfhel library to set up a homomorphic encryption scheme.

• Integer encryption of input values mimicking token or feature encodings.

• Secure computation directly on ciphertexts using arithmetic operations.

• Decryption of the result only at the end, maintaining full confidentiality during processing.

Hence, homomorphic encryption enables secure LLM prompt processing without revealing the original inputs.