python rsa 解密

RSA是一种非对称加密算法，在Python中可以使用pycryptodome库来进行RSA的加密和解密操作。具体的使用方法如下:

1. 安装pycryptodome库: `pip install pycryptodome`

2. 生成RSA密钥对:

from Crypto.PublicKey import RSA

# 生成密钥对
key = RSA.generate(2048)

# 保存公钥
with open('public.pem', 'wb') as f:
    f.write(key.publickey().export_key())

# 保存私钥
with open('private.pem', 'wb') as f:
    f.write(key.export_key())

3. 加密:

from Crypto.PublicKey import RSA
from Crypto.Cipher import PKCS1_OAEP

# 从文件中读取公钥
with open('public.pem', 'rb') as f:
    key = RSA.import_key(f.read())

# 初始化加密器
cipher = PKCS1_OAEP.new(key)

# 需要加密的明文
plaintext = b'my plaintext'

# 加密
ciphertext = cipher.encrypt(plaintext)

4. 解密:

from Crypto.PublicKey import RSA
from Crypto.Cipher import PKCS1_OAEP

# 从文件中读取私钥
with open('private.pem', 'rb') as f:
    key = RSA.import_key(f.read())

# 初始化解密器
cipher = PKCS1_OAEP.new(key)

# 解密
plaintext = cipher.decrypt(ciphertext)

希望这个能帮到你!