add_pytorch_tensor

Engine.add_pytorch_tensor(x, y)

Returns a ciphertext that is the sum of a ciphertext and a PyTorch tensor. Does not consume any level.

• Input:
  • x: torch.Tensor or Ciphertext
  • y: torch.Tensor or Ciphertext
  • If x is a Ciphertext, y must be a PyTorch tensor and vice versa.
• Output:
  • Ciphertext

Warning

• The matrix form does not yet support this operation.

import torch

from desilofhe import Engine

engine = Engine()
secret_key = engine.create_secret_key()
public_key = engine.create_public_key(secret_key)

message = [1, 2, 3]
ciphertext = engine.encrypt(message, public_key)

tensor = torch.tensor([4, 5, 6])

added = engine.add_pytorch_tensor(ciphertext, tensor)  # [5, 7, 9]