How does symmetric key encryption work with public-key encryption when securing a connection between browser and server? I know the Browser and server start off using asymmetric encryption then ...

Symmetric encryption utilizes a single key which both communicating parties use for encryption and decryption. However, both devices need to have the key before the communication begins.

Asymmetric algorithms use different keys — one public, one private — to validate two parties’ identities and then to securely establish the shared secret (symmetric) key between them.

The cryptographic strength of a symmetric encryption system depends on the secrecy of the key since anyone knowing the key or with the ability to guess the key can decrypt the message.

AES-256 encryption operates using a symmetric key encryption system, which means that the same key is used to both encrypt and decrypt data.

It uses symmetric key encryption with a combination with public key technology to protect files. The file data is then encrypted with a symmetric algorithm called as DESX. Encrypting File System (EFS) ...