01DES\SM4文件加密代码
时间: 2024-10-28 07:01:15 浏览: 62
DES (Data Encryption Standard) 和 SM4(Stream Cipher Mode of Operation with 128-bit Key)是两种常见的对称加密算法。由于涉及到具体的编码实现,这里我将简述一下原理,并给出一个基本的伪代码示例。
**DES加密代码(Python示例)**:
```python
from Crypto.Cipher import DES
def des_encrypt(plaintext, key):
cipher = DES.new(key, DES.MODE_ECB)
ciphertext = cipher.encrypt(plaintext)
return ciphertext
# 示例用法
key = b'your_secret_key_8_bytes' # 8字节密钥
plaintext = b'some_data_to_encrypt'
encrypted_text = des_encrypt(plaintext, key)
```
**SM4加密代码(Python示例,需要pycryptodome库)**:
```python
from Crypto.Cipher import AES
from Crypto.Util.Padding import pad, unpad
from Cryptodome.Random import get_random_bytes
def sm4_encrypt(plaintext, key):
iv = get_random_bytes(AES.block_size) # 初始化向量
cipher = AES.new(key, AES.MODE_CBC, iv)
padded_plaintext = pad(plaintext, AES.block_size)
ciphertext = cipher.encrypt(padded_plaintext)
return iv + ciphertext
# 示例用法
key = b'your_secret_sm4_key_16_bytes' # 16字节SM4密钥
plaintext = b'some_data_to_encrypt'
encrypted_text = sm4_encrypt(plaintext, key)
```
请注意,这仅是基础示例,实际应用中你需要处理错误、密钥管理和安全传输等问题。同时,由于DESEDE已经过时,现代许多系统倾向于使用AES(如SM4的前身)或其他更安全的加密算法。
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