帮我写一个python的hill加解密
时间: 2023-03-26 10:02:05 浏览: 139
好的,我可以为您提供一个Python的Hill加解密代码。以下是代码:
```python
import numpy as np
# 定义加密函数
def hill_encrypt(plain_text, key):
# 将明文转换为数字序列
plain_text = plain_text.lower().replace(' ', '')
plain_text = [ord(c) - ord('a') for c in plain_text]
plain_text = np.array(plain_text)
# 将密钥转换为矩阵
key = np.array(key)
# 计算矩阵乘积
cipher_text = np.dot(plain_text, key) % 26
# 将数字序列转换为密文
cipher_text = ''.join([chr(c + ord('a')) for c in cipher_text])
return cipher_text
# 定义解密函数
def hill_decrypt(cipher_text, key):
# 将密文转换为数字序列
cipher_text = cipher_text.lower().replace(' ', '')
cipher_text = [ord(c) - ord('a') for c in cipher_text]
cipher_text = np.array(cipher_text)
# 将密钥转换为矩阵
key = np.array(key)
# 计算矩阵的逆矩阵
key_inv = np.linalg.inv(key)
# 计算矩阵乘积
plain_text = np.dot(cipher_text, key_inv) % 26
# 将数字序列转换为明文
plain_text = ''.join([chr(c + ord('a')) for c in plain_text])
return plain_text
# 测试加解密函数
key = [[3, 4], [2, 3]]
plain_text = 'hello world'
cipher_text = hill_encrypt(plain_text, key)
print('明文:', plain_text)
print('密钥:', key)
print('密文:', cipher_text)
plain_text = hill_decrypt(cipher_text, key)
print('解密后的明文:', plain_text)
```
注意:这只是一个简单的Hill加解密代码,实际使用中需要考虑更多的安全性问题。
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