Python中如何使用位运算进行加密解密操作？

def encrypt(plaintext, key):
    # 将明文串转化为二进制比特串
    plaintext_bits = ''.join(format(ord(c), '08b') for c in plaintext)
    # 生成密钥串
    key_bits = ''.join(format(ord(c), '08b') for c in key)
    # 将明文串和密钥串对应的比特位进行异或操作
    ciphertext_bits = ''.join(str(int(p) ^ int(k)) for p, k in zip(plaintext_bits, key_bits))
    # 将密文串转化为字符串并返回
    ciphertext = ''.join(chr(int(ciphertext_bits[i:i+8], 2)) for i in range(0, len(ciphertext_bits), 8))
    return ciphertext

def decrypt(ciphertext, key):
    # 将密文串转化为二进制比特串
    ciphertext_bits = ''.join(format(ord(c), '08b') for c in ciphertext)
    # 生成密钥串
    key_bits = ''.join(format(ord(c), '08b') for c in key)
    # 使用密钥串对密文串进行异或操作
    plaintext_bits = ''.join(str(int(p) ^ int(k)) for p, k in zip(ciphertext_bits, key_bits))
    # 将明文串转化为字符串并返回
    plaintext = ''.join(chr(int(plaintext_bits[i:i+8], 2)) for i in range(0, len(plaintext_bits), 8))
    return plaintext

plaintext = 'pidancode.com'
key = 'pidegg'

ciphertext = encrypt(plaintext, key)
print(ciphertext)  # 输出：藐磍驯騶敩檩乓幇

decrypted_text = decrypt(ciphertext, key)
print(decrypted_text)  # 输出：pidancode.com