Goal
Option A
Transport compatibility
Option B
Confidentiality
FAQ Guide
Base64 is reversible encoding for transport. Encryption is a security control designed to protect data from unauthorized reading.
Transport compatibility
Confidentiality
Yes
No, key required
Payload encoding
Sensitive data
No. Anyone can decode it, so do not use it to hide secrets.
Some token parts are encoded for transport and inspection, not necessarily encrypted.
Use proper secret storage and encryption practices rather than encoding them.