pub fn decode(ciphertext: &Polynomial, scaling_factor: f64) -> Vec<f64>
The decode function converts a polynomial representation of encrypted data back into its original real number form.
It reverses the scaling applied during the encoding process and applies rounding and thresholding to ensure accuracy.
Description
Inputs:
ciphertext: A reference to the polynomial representing the encrypted data.scaling_factor: A scaling factor used to reverse the encoding process.
Output:
A Vec containing the decoded real numbers.
The function applies a threshold to treat small values as zero, ensuring numerical stability and accuracy.
Use Case: The function is a key component in the decryption process of homomorphic encryption schemes, where it translates encrypted polynomial data back into human-readable real numbers.