Set 1: Basics

• Challenge 1: Convert hex to base64

• Challenge 2: Fixed XOR

• Challenge 3: Single-byte XOR cipher

• Challenge 4: Detect single-character XOR

• Challenge 5: Implement repeating-key XOR

• Challenge 6: Break repeating-key XOR

• Challenge 7: AES in ECB mode

• Challenge 8: Detect AES in ECB mode