export const expandKeyFake = (key: number[][]): number[][][] => {
  /**
   * @param {string} key - A string of 128, 192, or 256 bits.
   * @returns {string[]} An array of round keys.
   */
  const N_k = key[0].length // Number of columns in the key matrix (4 for 128-bit, 6 for 192-bit, 8 for 256-bit)
  const N_r = N_k + 6 // Number of rounds (10 for 128-bit, 12 for 192-bit, 14 for 256-bit)
  const totalKeys = 4 * (N_r + 1) // Total number of 4-byte words required

  const expandedKeys: number[][][] = []
  for (let i = 0;i < totalKeys / 4;i++) {
    const matrix: number[][] = [
        [0, 0, 0, 0],
        [0, 0, 0, 0],
        [0, 0, 0, 0],
        [0, 0, 0, 0],
    ]
    expandedKeys.push(matrix)
  }

  return expandedKeys
}