← All Kali Issues
Base64

Decode fails

S System Low

🔴 Error Message

Invalid base64 input during decode

📖 What This Means

Input has incorrect padding or characters.

🔧 Step-by-Step Fix

  1. Fix padding: add = signs to make length multiple of 4
  2. Use: base64 -d <<< "encoded_string"
  3. Remove newlines: echo -n "string" | base64 -d
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