ESP32-P4 datasheet(56/93 Pages) ESPRESSIF

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4 Functional Description

• Chinese SM2 algorithm (for detailed definitions, see Public Key Cryptographic Algorithm SM2 Based on

Elliptic Curves)

• Provides high-security features:

– Implements dynamic access control under different operating states to prevent key leakage caused

by any intermediate data exposure

– Signature generation and verification are fixed-time operations, resistant to side-channel attacks

4.1.5.8 External Memory Encryption and Decryption (XTS_AES)

The ESP32-P4 integrates an External Memory Encryption and Decryption module that complies with the

XTS-AES standard algorithm specified in IEEE Std 1619-2007, providing security for users’ application code and

data stored in the external memory (flash and RAM). Users can store proprietary firmware and sensitive data

(e.g., credentials for gaining access to a private network) in the external flash, or store general data in the

external RAM.

Feature List

• General XTS-AES algorithm, compliant with IEEE Std 1619-2007

• Software-based manual encryption

• High-speed auto encryption without software’s participation

• High-speed auto decryption without software’s participation

• Encryption and decryption functions jointly enabled/disabled by register configuration, eFuse

parameters, and boot mode

• Configurable anti–side-channel attack (anti-DPA) capability

• Independent keys for flash and PSRAM respectively

4.1.5.9 Random Number Generator (RNG)

The ESP32-P4 contains a true random number generator (TRNG), which generates 32-bit random numbers

that can be used for cryptographical operations, among other things.

The TRNG in ESP32-P4 generates true random numbers, which means random numbers generated from a

physical process, rather than by means of an algorithm. No number generated within the specified range is

more or less likely to appear than any other number.

Features

• RNG entropy source

– thermal noise from SAR ADC

– an asynchronous clock mismatch

– BUF_CHAIN

Espressif Systems

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ESP32-P4 Series Datasheet v0.5

ESP32-P4 Datasheet(PDF) 56 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.