python如何实现rsa加密的示例代码分享

import rsa
key = rsa.newkeys(3000)#生成随机秘钥
privateKey = key[1]#私钥
publicKey = key[0]#公钥
message ='sanxi Now is better than never.'
print('Before encrypted:',message)
message = message.encode()
cryptedMessage = rsa.encrypt(message, publicKey)
print('After encrypted:
',cryptedMessage)
message = rsa.decrypt(cryptedMessage, privateKey)
message = message.decode()
print('After decrypted:',message)

Before encrypted: sanxi Now is better than never.
After encrypted:
 b"P�����n���C�B�Q�w�*�i��
xeb�+�
��O‡���h��.Q>K��d�
xb0�!+�)��iN�Y%#�E��#����C)|�[$��|
a�B����A�f_�(�v�ˋ����3�
�����?�c�eO���Z6�L!���

h��EHKaC�&�c�42��`�l�X/`�MBqA�
T��Y�qNd1�I���I�8'}�aQ�DQ�r(�{=�`vq�
x80�α%A�+(��l���Bʕ�Ի�
7p��<u-b����̑[�v\�I�$O���Q��x
ecΏ�Q����m��@�2L��
F�P
���Ţt;9K\o�. .�A^_F��k�p���B��U�x
b7�;`��7�G���3�C~�M���h1D"
After decrypted: sanxi Now is better than never.