rsa算法加解密python

以下是使用Python实现RSA算法的加解密过程：

1.生成公钥和私钥

from Crypto.PublicKey import RSA

# 生成密钥对
key = RSA.generate(2048)

# 获取公钥和私钥
private_key = key.export_key()
public_key = key.publickey().export_key()

# 将公钥和私钥保存到文件中
with open('private.pem', 'wb') as f:
    f.write(private_key)
with open('public.pem', 'wb') as f:
    f.write(public_key)

2.加密和解密

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

# 加载公钥和私钥
with open('private.pem', 'rb') as f:
    private_key = RSA.import_key(f.read())
with open('public.pem', 'rb') as f:
    public_key = RSA.import_key(f.read())

# 加密
cipher = PKCS1_OAEP.new(public_key)
encrypted_data = cipher.encrypt(b'Hello, world!')

# 解密
cipher = PKCS1_OAEP.new(private_key)
decrypted_data = cipher.decrypt(encrypted_data)

print(decrypted_data.decode()) # 输出：Hello, world!