Use of encryption and hardware on CC256x and CC254x

BrandonAzbell

Other Parts Discussed in Thread: AES-128

On the Bluetooth IC’s (CC256x,4x), is the application able to use the encryption functions and AES hardware to encrypt/decrypt an array?

If so, how long does it take?

The application needs encryption at the application layer so we can use a single network wide key (part of ad or indication payload), and no link layer security.

over 12 years ago

0 JasonHaedt over 12 years ago

Genius 3320 points

Dear TI,

Any update on this?

Thanks,

Jason

0 Miguel over 12 years ago

TI__Mastermind 23565 points

Hi,

Yes, you can use the LE_Encrypt command to request the Controller to encrypt the Plaintext_Data in the command using the Key given in the command. It returns the Encrypted_Data to the Host. The AES-128 bit block cypher is defined in NIST Publication FIPS-197 (http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf).

It takes tens to hundreds of milliseconds.

Regards,

Miguel

Bluetooth®︎

Bluetooth forum

Use of encryption and hardware on CC256x and CC254x