tenseal

import tenseal as ts # 1. Setup TenSEAL Context for CKKS scheme # These parameters are critical for security and functionality. poly_mod_degree = 8192 coeff_mod_bit_sizes = [60, 40, 40, 60] # Create a TenSEAL context context = ts.context( ts.SCHEME_TYPE.CKKS, poly_mod_degree=poly_mod_degree, coeff_mod_bit_sizes=coeff_mod_bit_sizes ) # Generate keys for homomorphic operations (e.g., rotations, relinearization for multiplication) context.generate_galois_keys() context.generate_relin_keys() # Set the scale for CKKS scheme # The scale defines the precision of computations. scale = 2**40 context.global_scale = scale # 2. Encrypt some data vector1 = [0, 1, 2, 3, 4] vector2 = [5, 6, 7, 8, 9] encrypted_vector1 = ts.ckks_vector(context, vector1) encrypted_vector2 = ts.ckks_vector(context, vector2) # 3. Perform homomorphic operations (e.g., addition) encrypted_sum = encrypted_vector1 + encrypted_vector2 # 4. Decrypt and verify # The decryption operation uses the secret key from the context. decrypted_sum = encrypted_sum.decrypt() print(f"Original vector 1: {vector1}") print(f"Original vector 2: {vector2}") print(f"Encrypted sum (truncated): {decrypted_sum[:5]}") # Print first 5 elements # Expected result: [5.0, 7.0, 9.0, 11.0, 13.0]