Encryption and decryption

Certificate pinning and Public key pinning

Certificate pinning and public key pinning are both techniques that are used to enhance the security of a network connection by ensuring that the client trusts only a specific certificate

Use openssl to create public key and private key

Generally speaking, currently digital encryption methods can be divided into two main categories, symmetric encryption and asymmetric encryption. For symmetric encryption, the same key is used for encryption and decryption.