Python二维易位加密代码
时间: 2024-10-11 14:11:13 浏览: 8
在Python中,二维易位加密(Permutation Encryption)通常不需要像Java那样明确地处理二维字符数组,因为Python提供了列表和切片操作更为简洁。这里是一个简单的二维易位加密示例,你可以基于这个基本思路进行扩展:
```python
import random
def create_permutation_matrix(n_cols):
# 创建随机的n_cols x n_cols的排列矩阵
permutation_matrix = [[i for i in range(n_cols)] for _ in range(n_cols)]
random.shuffle(permutation_matrix)
return permutation_matrix
def encrypt(text, key_size):
# 将文本拆分为单个字符并分割成key_size块
text_chars = [char for char in text]
chunks = [text_chars[i:i+key_size] for i in range(0, len(text_chars), key_size)]
# 对每个块应用二维易位
encrypted_chunks = []
for chunk in chunks:
perm_matrix = create_permutation_matrix(len(chunk))
encrypted_chunk = [chunk[perm_matrix[row][col]] for row in range(len(perm_matrix)) for col in range(len(perm_matrix[row]))]
encrypted_chunks.append(''.join(encrypted_chunk))
# 合并加密后的块
encrypted_text = ''.join(encrypted_chunks)
return encrypted_text
# 示例
plaintext = "Hello, World!"
key_size = 4
encrypted_text = encrypt(plaintext, key_size)
print(f"Original Text: {plaintext}")
print(f"Encrypted Text: {encrypted_text}")
#
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