create_matrix_multiplication_key

Engine.create_matrix_multiplication_key(secret_key, level)

Creates a matrix multiplication key, which is used for matrix multiplication. Requires a secret key.

• Input:
  • SecretKey
  • level: int, optional
    • Creates the key with a reduced size to contain only the specified multiplication levels.
• Output:
  • MatrixMultiplicationKey

Warning

• The vector form does not support this operation.

from desilofhe import Engine

engine = Engine(form="matrix")
secret_key = engine.create_secret_key()
matrix_multiplication_key = engine.create_matrix_multiplication_key(secret_key)

level_3_matrix_multiplication_key = engine.create_matrix_multiplication_key(
    secret_key, level=3
)