base64.h File Reference

Base64 encoder/decoder. More...

#include "protocore_config.h"

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Detailed Description

Base64 encoder/decoder.

Used to encode the SHA-1 digest in the WebSocket handshake response (RFC 6455 §4.2.2) and to decode Basic Auth credentials (RFC 7617).

Encode is a portable software codec on every target (fast; it only handles the public WebSocket-accept digest). Decode touches the secret Basic-auth credentials, so on the ESP32 it uses mbedTLS's constant-time decoder (side-channel hardened) and on the native test target the portable software decoder. See base64.cpp and docs/FEATURE_PERFORMANCE.md section 2.

Author

Douglas Quigg (dstroy0)

Date

2026

Definition in file base64.h.