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Author SHA1 Message Date
Oleksandr Grytsov f304177726 [samr21] Add hardware acceleration for the AES block cipher (#3491) 
samr21 has HW aes-128 module. It couldn't be used before as mbedtls uses
256 bit random generator. Recently mbedtls introduces
MBEDTLS_CTR_DRBG_USE_128_BIT_KEY flag which makes mbedtls to use 128 bit
random generator. It limits the security of generated keys but allows
to use HW aes-128 module for encrypt/decrypt 802.15.4 frames.

Signed-off-by: Oleksandr Grytsov <al1img@gmail.com>
 2019-02-04 18:24:37 -08:00