使用python中现有的.pem文件加密和解密数据

Question

我从某个类似的地方得到myfile.pem：

Bag Attributes
    localKeyID: 01 00 00 00 
    Microsoft CSP Name: Microsoft Enhanced Cryptographic Provider v1.0
    friendlyName: le-Administrator-a40d2803-ae0e-5b5a-8c16-f379ea22e803
Key Attributes
    X509v3 Key Usage: 80 
-----BEGIN PRIVATE KEY-----
Something secret
-----END PRIVATE KEY-----
Bag Attributes
    localKeyID: 01 00 00 00 
    friendlyName: Myapp
subject=/C=IR/ST=THR/O=Myapp/CN=\xD8\xB4\xDA\xA9\xD9\x88\xD8\xB1\xDB\x8C \xD9\x75\xD9\x82\xD8\xAF\xD9\x85 \xE2\x80\x93 \xDB\xB1\xDB\xB0\xDB\xB0\xDB\xB0\xDB\xB0\xD9\xB064692851
issuer=/DC=ir/DC=pnaco/CN=PNA Terminal CA

-----BEGIN CERTIFICATE-----
Something binary data
-----END CERTIFICATE-----

我想加密一些消息并使用此文件发送。我该怎么办？