Embedded Security

Hardware Crypto Engine

The Hardware Crypto Engine on the PIC24F and PIC32MZ devices accelerates applications that need cryptographic functions. By executing these functions in the hardware module, software overhead is reduced, and actions such as encryption, decryption, and authentication can execute much more quickly. This also removes the need to develop an appropriate cryptographic code library for new applications.

Features	PIC24FJ	PIC32MZ
Bulk Ciphers
AES: 128-bit, 192-bit, nd 256-bit Key Sizes CBC, ECB, CTR, CFB, and OFB modes	Yes	Yes
DES/TDES CBC, ECB, CFB, and OFB modes	Yes	Yes
Authentication
SHA-1, SHA-256, MD-5, AES-GCM HMAC operation (for all authentication engines)	No	Yes
Random Number Generation
Pseudorandom Number Generation (PRNG) LSFR-based Up to 64-bit polynomial length Programmable polynomial TRNG can be seed value	Yes	Yes
True Random Number Generator (TRNG) Up to 25 Mbps of random bits Multi-Ring Oscillator based design Built in Bias Corrector	Yes	Yes
Programmatically Secure Key Storage
OTP Secure Key Storage 512-byte OTP array Not readable from other memory spaces Simple, in-module programming interface Supports Key Encryption Key (KEK)	Yes	No
Other Product Features
DMA Assess	No	Yes
Performance	32 MHz	200 MHz
Memory Range (KB)	64 - 128	1024 - 2048
Pincount Range	28 - 44	64 - 144
eXtreme Low Power	Yes	No
Link to Family Reference Manual to Learn More	PIC24F Crypto Engine FRM	PIC32 Crypto Engine FRM