python调用库实现des,要求可以实现自行输入后输出加密结果和解密结果
时间: 2024-09-20 18:13:41 浏览: 93
在Python中,你可以通过pycryptodome
库来实现DES(Data Encryption Standard)算法,它是一个强大的加密库,支持多种加密算法包括DES。首先,你需要安装这个库,可以使用pip命令:
pip install pycryptodome
下面是一个简单的例子,演示如何使用DES进行加解密操作:
from Crypto.Cipher import DES
import base64
# 加密函数
def des_encrypt(plaintext, key):
cipher = DES.new(key.encode('utf-8'), DES.MODE_ECB) # ECB模式是默认模式
ciphertext = cipher.encrypt(plaintext.encode('utf-8'))
return base64.b64encode(ciphertext).decode()
# 解密函数
def des_decrypt(ciphertext, key):
decoded_ciphertext = base64.b64decode(ciphertext)
cipher = DES.new(key.encode('utf-8'), DES.MODE_ECB)
plaintext = cipher.decrypt(decoded_ciphertext)
return plaintext.decode()
# 示例
key = "your_secret_key" # 你需要设置一个DES密钥
plaintext = input("请输入需要加密的明文: ")
ciphertext = des_encrypt(plaintext, key)
print(f"加密后的文本: {ciphertext}")
decrypted_text = des_decrypt(ciphertext, key)
print(f"解密后的文本: {decrypted_text}")
在这个示例里,用户会被提示输入要加密的明文。注意,DES通常用于教学目的,因为它的安全性较低,在实际生产环境中更推荐使用更安全的加密算法。
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