crypto: arm64/aes-blk - honour iv_out requirement in CBC and CTR modes

Update the ARMv8 Crypto Extensions and the plain NEON AES implementations
in CBC and CTR modes to return the next IV back to the skcipher API client.
This is necessary for chaining to work correctly.

Note that for CTR, this is only done if the request is a round multiple of
the block size, since otherwise, chaining is impossible anyway.

Cc: <stable@vger.kernel.org> # v3.16+
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

path: root/include/crypto/cast_common.h

#ifndef _CRYPTO_CAST_COMMON_H
#define _CRYPTO_CAST_COMMON_H

extern const u32 cast_s1[256];
extern const u32 cast_s2[256];
extern const u32 cast_s3[256];
extern const u32 cast_s4[256];

#endif