• Cyrille Pitchen's avatar
    crypto: atmel-authenc - add support to authenc(hmac(shaX), Y(aes)) modes · 89a82ef8
    Cyrille Pitchen authored
    This patchs allows to combine the AES and SHA hardware accelerators on
    some Atmel SoCs. Doing so, AES blocks are only written to/read from the
    AES hardware. Those blocks are also transferred from the AES to the SHA
    accelerator internally, without additionnal accesses to the system busses.
    
    Hence, the AES and SHA accelerators work in parallel to process all the
    data blocks, instead of serializing the process by (de)crypting those
    blocks first then authenticating them after like the generic
    crypto/authenc.c driver does.
    
    Of course, both the AES and SHA hardware accelerators need to be available
    before we can start to process the data blocks. Hence we use their crypto
    request queue to synchronize both drivers.
    Signed-off-by: default avatarCyrille Pitchen <cyrille.pitchen@atmel.com>
    Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
    89a82ef8
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