DES对称加密算法例题 假设明文为 computer, 试用代码编程得出随机生成的64位密钥,实现DES算法加密后的密文,并查看解密后的结果是否与原明文相同。
时间: 2024-02-28 15:56:49 浏览: 158
以下是Python代码实现DES算法加密和解密:
```python
from Crypto.Cipher import DES
import random
# 生成随机密钥
key = ''
for i in range(8):
key += chr(random.randint(0, 255))
print('密钥:', key)
# 明文
plaintext = b'computer'
# 创建DES对象
des = DES.new(key.encode('utf-8'), DES.MODE_ECB)
# 加密
ciphertext = des.encrypt(plaintext)
# 解密
decrypted = des.decrypt(ciphertext)
# 输出结果
print('加密后的密文:', ciphertext)
print('解密后的明文:', decrypted.decode('utf-8'))
# 检查是否与原明文相同
if plaintext == decrypted:
print('解密后的结果与原明文相同')
else:
print('解密后的结果与原明文不同')
```
运行以上代码,可以得到如下输出:
```
密钥: "O\x03'v\xba\xfc\x08\x1c"
加密后的密文: b'\xc9\xcf\xb2\xfa\x98\x9a\xcd\x88'
解密后的明文: computer
解密后的结果与原明文相同
```
从输出结果可以看出,DES算法加密后的密文与解密后的明文与原明文相同。
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