半部分进行异或 left_xor = xor(binary_list_to_str(left), binary_list_to_str(right_permuted)) left_xor = binary_str_to_list(left_xor)

更新左右半部分

left = right right = left_xor

将左右半部分交换

left, right = right, left

将左右半部分合并

data = left + right

将数据进行逆置换

data = inverse_permutation(data) return data

加密一个字符串 def encrypt(s: str, key: str) -> str:

将字符串转换为二进制字符串

s_binary = str_to_binary_str(s)

将密钥转换为二进制字符串

key_binary = str_to_binary_str(key)

将二进制字符串转换为列表形式

s_list = binary_str_to_list(s_binary) key_list = binary_str_to_list(key_binary)

生成子密钥

subkeys = generate_subkeys(key_list)

对数据进行分块，每块64位

blocks = [s_list[i:i+64] for i in range(0, len(s_list), 64)]

对每个块进行加密

encrypted_blocks = [encrypt_block(block, subkeys) for block in blocks]

将加密后的块合并为一个列表

encrypted_list = [c for block in encrypted_blocks for c in block]

将加密后的列表转换为二进制字符串

encrypted_binary = binary_list_to_str(encrypted_list)

将二