• Ard Biesheuvel's avatar
    arm64/crypto: AES-ECB/CBC/CTR/XTS using ARMv8 NEON and Crypto Extensions · 49788fe2
    Ard Biesheuvel authored
    This adds ARMv8 implementations of AES in ECB, CBC, CTR and XTS modes,
    both for ARMv8 with Crypto Extensions and for plain ARMv8 NEON.
    
    The Crypto Extensions version can only run on ARMv8 implementations that
    have support for these optional extensions.
    
    The plain NEON version is a table based yet time invariant implementation.
    All S-box substitutions are performed in parallel, leveraging the wide range
    of ARMv8's tbl/tbx instructions, and the huge NEON register file, which can
    comfortably hold the entire S-box and still have room to spare for doing the
    actual computations.
    
    The key expansion routines were borrowed from aes_generic.
    Signed-off-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
    Acked-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
    49788fe2
aes-neon.S 13 KB