pip3 install cryptography -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com


from cryptography.hazmat.primitives.asymmetric import rsa, padding
from cryptography.hazmat.primitives import serialization, hashes

# 生成密钥对
private_key = rsa.generate_private_key(public_exponent=65537, key_size=2048)
public_key = private_key.public_key()

# 加密明文
plaintext = b"Hello, World!"
ciphertext = public_key.encrypt(plaintext, padding.OAEP(mgf=padding.MGF1(algorithm=hashes.SHA256()), algorithm=hashes.SHA256(), label=None))

# 解密密文
decrypted_text = private_key.decrypt(ciphertext, padding.OAEP(mgf=padding.MGF1(algorithm=hashes.SHA256()), algorithm=hashes.SHA256(), label=None))

print("明文：", plaintext)
print("密文：", ciphertext)
print("解密后的明文：", decrypted_text)

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