square

Engine.square(ciphertext, relinearization_key)

Returns the square of the input ciphertext. Consumes a level.

• Input:
  • Ciphertext
  • RelinearizationKey, optional
    • If provided, the resulting ciphertext undergoes relinearization. This is recommended to facilitate subsequent operations.
• Output:
  • Ciphertext

from desilofhe import Engine

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

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

squared = engine.square(ciphertext, relinearization_key)

Engine.square(ciphertext, evaluation_key)

Returns the square of the input ciphertext. The result is relinearized using the relinearization key bundled in the evaluation key. Consumes a level.

• Input:
  • Ciphertext
  • EvaluationKey, optional
    • If provided, the resulting ciphertext undergoes relinearization. This is recommended to facilitate subsequent operations.
• Output:
  • Ciphertext

Warning

• The matrix form does not yet support this operation.

from desilofhe import Engine

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

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

squared = engine.square(ciphertext, evaluation_key)