Encryption Types
AES, RSA, PKI, and digital signatures—the building blocks of secure communication.
1. Symmetric Encryption (AES)
How AES uses one shared key for fast encryption—and how keys must stay secret.
15 min
+48 XP
2. Asymmetric Encryption (RSA)
Public/private key pairs: encrypt with one key, decrypt with the other.
15 min
+48 XP
3. Public Key Infrastructure (PKI)
Certificates, trust chains, and how PKI connects identities to public keys.
15 min
+47 XP
4. Digital Signatures
Prove who signed a message and that it was not altered in transit.
15 min
+47 XP
5. Quiz — Encryption
10-question quiz on AES, RSA, PKI, and digital signatures.
10 min
+47 XP