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Commit 9467a315 authored by Ard Biesheuvel's avatar Ard Biesheuvel Committed by Herbert Xu
Browse files

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: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 1e25ca02

include/crypto/aes.h

+3 −0
Original line number Diff line number Diff line
@@ -67,4 +67,7 @@ void aes_encrypt(const struct crypto_aes_ctx *ctx, u8 *out, const u8 *in); 
 */

void aes_decrypt(const struct crypto_aes_ctx *ctx, u8 *out, const u8 *in);



extern const u8 crypto_aes_sbox[];

extern const u8 crypto_aes_inv_sbox[];



#endif

lib/crypto/aes.c

+6 −0
Original line number Diff line number Diff line
@@ -82,6 +82,12 @@ static volatile const u8 __cacheline_aligned aes_inv_sbox[] = { 
	0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d,

};



extern const u8 crypto_aes_sbox[256] __alias(aes_sbox);

extern const u8 crypto_aes_inv_sbox[256] __alias(aes_inv_sbox);



EXPORT_SYMBOL(crypto_aes_sbox);

EXPORT_SYMBOL(crypto_aes_inv_sbox);



static u32 mul_by_x(u32 w)

{

	u32 x = w & 0x7f7f7f7f;