SEC GUY / JOB READY / ENCRYPTION LAB 02

One shared secret. One protected message.

Use a passphrase-derived AES-GCM key to encrypt a harmless sample and produce a portable training packet.

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02 / 10   AES-GCMBrowser-based trainingSafe sample data only
UNDERSTAND THE IDEA

Symmetric encryption

THE CONCEPT

Symmetric encryption uses the same key for encryption and decryption. AES-GCM also detects tampering. This lab derives a key from a training passphrase with PBKDF2; production applications need a reviewed key-management design.

YOUR MISSION

Change the sample text if you like, encrypt it, and copy the packet into Lab 03 to test recovery.

INTERACTIVE / LAB 02

Try it yourself.

Use fictional input only. Your learning actions run locally in this browser tab.

Packet contains the salt, IV and ciphertext—not the passphrase.

CHECK YOUR UNDERSTANDING

What must the recipient have to decrypt this packet?

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