encode

GLEngine.encode(message, level)
Encodes a message into a plaintext format for encryption. The shape of message that can be encoded is determined by GLEngine.shape. The dimension of the 0-axis could be smaller. For example, if the shape of the engine is (256, 32, 32), messages with shape (n, 32, 32) where n <= 256 can be encoded. If the message length exceeds this size of shape, an error is raised. If it is smaller, the message is padded with zeros during encoding.
  • Input:
    • message: A Python list or numpy array. Data types supported include int, double, and complex double.
    • level: optional
      • Specifies the maximum multiplication level for encoding. Lower levels reduce space usage but also reduce the maximum multiplication depth.
  • Output:
    • GLPlaintext
import numpy as np

from desilofhe import GLEngine

engine = GLEngine()

message = np.ones(engine.shape)
encoded = engine.encode(message)

import numpy as np

from desilofhe import GLEngine

engine = GLEngine()

message = np.ones(engine.shape)
encoded = engine.encode(message, level=3)

import numpy as np

from desilofhe import GLEngine

engine = GLEngine()

# message with smaller batch
message = np.ones(23, 32, 32)
encoded = engine.encode(message)

Typically, the encrypt function handles encoding automatically. Pre-encoding a message can improve efficiency when the same message is reused across multiple operations, as it avoids redundant encoding.