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 <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
diff --git a/include/crypto/aes.h b/include/crypto/aes.h
index df8426f..8e0f4cf 100644
--- a/include/crypto/aes.h
+++ b/include/crypto/aes.h
@@ -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
diff --git a/lib/crypto/aes.c b/lib/crypto/aes.c
index 9928b23..4e100af 100644
--- a/lib/crypto/aes.c
+++ b/lib/crypto/aes.c
@@ -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;
