• Ard Biesheuvel's avatar
    crypto: arm64/aes-neon - fix for big endian · a2c435cc
    Ard Biesheuvel authored
    The AES implementation using pure NEON instructions relies on the generic
    AES key schedule generation routines, which store the round keys as arrays
    of 32-bit quantities stored in memory using native endianness. This means
    we should refer to these round keys using 4x4 loads rather than 16x1 loads.
    In addition, the ShiftRows tables are loading using a single scalar load,
    which is also affected by endianness, so emit these tables in the correct
    order depending on whether we are building for big endian or not.
    
    Fixes: 49788fe2 ("arm64/crypto: AES-ECB/CBC/CTR/XTS using ARMv8 NEON and Crypto Extensions")
    Signed-off-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
    Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
    a2c435cc
aes-neon.S 13.2 KB