Imagine you want to send a secret message to your friend. There are two main ways to lock it with encryption: Symmetric Encryption (like a secret handshake) Single Key: This is like a secret handshake you both made up. Only you two know the handshake to unlock the message (the key). Fast and Easy: SRead more
Imagine you want to send a secret message to your friend. There are two main ways to lock it with encryption:
Symmetric Encryption (like a secret handshake)
- Single Key: This is like a secret handshake you both made up. Only you two know the handshake to unlock the message (the key).
- Fast and Easy: Sharing secrets with a single handshake is quick and works well for large messages.
- Sharing the Secret: The challenge is getting the secret handshake (key) to your friend securely. If someone else sees it, they can unlock the message!
Use this when:
- Sending large files like videos or photos.
- Encrypting data on your hard drive.
Asymmetric Encryption (like a special lock and key)
- Key Pair: Imagine a special lock with two keys. One key (public key) is like your house key – anyone can have it. The other key (private key) is super secret, like your only spare house key.
- Public for Sending, Private for Opening: Anyone with the public key can lock a message in the special lock (encrypt), but only you with the private key can unlock it (decrypt).
- Slower but Secure: It’s a bit slower than the handshake, but you don’t need to share a secret key directly, making it more secure for some things.
Use this when:
- Sending a secret message to someone you don’t know well (they use your public key to lock the message).
- Digitally signing documents to prove they’re from you (like a wax seal).
Sometimes you can even use both together! Imagine giving your friend a regular lock (public key) to put the message in, then using your secret handshake (symmetric key) to lock it extra securely inside.
What is a Thread? A thread is the smallest unit of execution within a process. It is a lightweight, independent sequence of programmed instructions that can be managed independently by a scheduler. Multiple threads within the same process share resources like memory and file handles but execute indeRead more