Introduction - If you have any usage issues, please Google them yourself
Encryption and decryption procedures and source code in C#, encryption, mainly in two steps, the first step to select the file, the second step randomly generated as the encryption key Key and IV using the sender' s private key signature random key using the recipient public key encryption key key and signature, using the random key packet to encrypt data using the DES algorithm, the MD5 digest generation-> sender' s private key signature