XPU

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The security coprocessor of the SMP863x is mainly responsible for encryption/decryption tasks but it also provides secure storage of secret keys. The private part of an RSA keypair cannot be extracted from the XPU therefore it is a secure device for DRM related tasks.

There is an AES core embedded in the XPU.

The XPU is also responsible for the initial boot of the system, controlled by the XOS.

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