Commit Graph

3 Commits

Author SHA1 Message Date
Iuliana Prodan
bc67d04e75 crypto: aes - helper function to validate key length for AES algorithms
Add inline helper function to check key length for AES algorithms.
The key can be 128, 192 or 256 bits size.
This function is used in the generic aes implementation.

Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-08-09 15:11:43 +10:00
Ard Biesheuvel
9467a3150c crypto: lib/aes - export sbox and inverse sbox
There are a few copies of the AES S-boxes floating around, so export
the ones from the AES library so that we can reuse them in other
modules.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-07-26 14:58:36 +10:00
Ard Biesheuvel
e59c1c9874 crypto: aes - create AES library based on the fixed time AES code
Take the existing small footprint and mostly time invariant C code
and turn it into a AES library that can be used for non-performance
critical, casual use of AES, and as a fallback for, e.g., SIMD code
that needs a secondary path that can be taken in contexts where the
SIMD unit is off limits (e.g., in hard interrupts taken from kernel
context)

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-07-26 14:55:33 +10:00