Radix64

Platform: CUSTOM | Category: Crypto | Type: Challenge | Difficulty: Easy | OS: N/A | **Author: XESXOR Techniques: Character translation between alphabets, crypt(3) radix64 decoding, Identify non-standard base64 alphabet

Summary

Walkthrough of the CUSTOM Crypto Radix64. Task: Decode radix64 encoded data using crypt(3) alphabet. Solution: Translate from crypt(3) alphabet to standard base64 alphabet, then base64 decode.

Description

Radix64 with crypt(3) alphabet: ./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz

Solution

Translate from crypt(3) alphabet to standard base64 alphabet, then base64 decode. ‍​‌‌​​‌​​​‌‌​​‌​​​​‌‌​‌​​​​‌‌‌​​‌​​‌‌​​​‌​​‌‌‌​​​​​‌‌​‌‌​​​‌‌​​​​‍

Key Takeaways / Lessons

• Mastering Character translation between alphabets, crypt(3) radix64 decoding, Identify non-standard base64 alphabet was key to this challenge.
• Always check for common misconfigurations and verify assumptions.

---

Crafted by XESXOR Research • 2026-03-08 • CUSTOM • Radix64 • Difficulty: Easy