Crypto D100 User's Guide download pdf (Page 6)

Secure Boot with i.MX28 HAB Version 4, Rev. 1

6 Freescale Semiconductor

i.MX28 security architecture overview

Figure 1. Secure boot flow from device

2.3 HAB Public Key Infrastructure

HAB authentication is based on public key cryptography using the RSA algorithm in which image data is

signed offline using a series of private keys. The resulting signed image data then is verified on i.MX28

using the corresponding public keys. This key structure is known as a Public Key Infrastructure (PKI) tree.

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Crypto D100 User's Guide Page 6