No. 04 — Labs

Labs &

solved

Assignments from my cybersecurity course, worked through with real output. Every result has the file or command next to it, so you can check my numbers instead of trusting them.

integrity

SHA-256

Bob sends a 300-word message. Amaka changes one character on the way. Two SHA-256 hashes with almost nothing in common.

→/labs/integrityOpen

encryption

OpenSSL

Bob encrypts the 300 words for Amaka, then one bit is flipped in transit. Real OpenSSL commands, real output.

→/labs/encryptionOpen

forensics

Forensics

Twelve forensic questions answered in detail: volatile evidence, RAM, hashing, the Windows Registry, USB records and chain of custody.

→/labs/forensicsOpen

passwords

Hashing

Same input, same hash. Why MD5 and SHA-256 are wrong for passwords, and how salts and scrypt fix it, with real timings.

→/labs/passwordsOpen