Users Manual

Table Of Contents
R01UH0823EJ0110 Rev.1.10 Page 1495 of 1852
Nov 30, 2020
RX23W Group 42. Trusted Secure IP (TSIP-Lite)
42.2.2 Encryption Engine
Figure 42.3 shows processes of the encryption engine integrated in the TSIP-Lite.
The encryption engine, using the key generation information, performs plaintext to ciphertext encryption and ciphertext
to plaintext decryption by hardware.
In no part of the encryption or decryption process, is key data or intermediate data ever exposed outside of the TSIP-Lite.
Figure 42.3 Encryption and Decryption processes by Encryption Engine
Key generation information
Encryption
engine
Decryption
Key generation information
Encryption
Plaintext
Ciphertext
Ciphertext
Plaintext
Access
management
circuit
Encryption
engine
Access
management
circuit
TSIP-Lite
TSIP-Lite