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aes: add a define for the size of a block

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In the code, we use the size of the key for the
size of the block. It's true when the key is 128 bits,
but it become false for key of 192 bits and 256 bits.
So to prepare the support of aes192  and 256,
we introduce a constant for the iaes block size.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Philippe Reynes
2020-01-06 15:22:34 +01:00
committed by Tom Rini
parent d7bb6aceb2
commit 7012c04ef3
3 changed files with 21 additions and 20 deletions
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2
cmd/aes.c
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@@ -56,7 +56,7 @@ static int do_aes(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
aes_expand_key(key_ptr, key_exp);
/* Calculate the number of AES blocks to encrypt. */
aes_blocks = DIV_ROUND_UP(len, AES_KEY_LENGTH);
aes_blocks = DIV_ROUND_UP(len, AES_BLOCK_LENGTH);
if (enc)
aes_cbc_encrypt_blocks(key_exp, iv_ptr, src_ptr, dst_ptr,