From 39f91a34f3215ee730f9c6e3e1b5374b6b6cb62d Mon Sep 17 00:00:00 2001 From: Harsh Jain Date: Tue, 29 Nov 2016 19:00:35 +0530 Subject: crypto: chcr - Cosmetic change Moves get_aes_decrypt_key function to .c file and declare inline for "aes_ks_subword" Signed-off-by: Jitendra Lulla Signed-off-by: Herbert Xu --- drivers/crypto/chelsio/chcr_algo.h | 59 +------------------------------------- 1 file changed, 1 insertion(+), 58 deletions(-) (limited to 'drivers/crypto/chelsio/chcr_algo.h') diff --git a/drivers/crypto/chelsio/chcr_algo.h b/drivers/crypto/chelsio/chcr_algo.h index 199b0bb69b89..f34bc915783a 100644 --- a/drivers/crypto/chelsio/chcr_algo.h +++ b/drivers/crypto/chelsio/chcr_algo.h @@ -394,7 +394,7 @@ static const u8 aes_sbox[256] = { 187, 22 }; -static u32 aes_ks_subword(const u32 w) +static inline u32 aes_ks_subword(const u32 w) { u8 bytes[4]; @@ -412,61 +412,4 @@ static u32 round_constant[11] = { 0x1B000000, 0x36000000, 0x6C000000 }; -/* dec_key - OUTPUT - Reverse round key - * key - INPUT - key - * keylength - INPUT - length of the key in number of bits - */ -static inline void get_aes_decrypt_key(unsigned char *dec_key, - const unsigned char *key, - unsigned int keylength) -{ - u32 temp; - u32 w_ring[MAX_NK]; - int i, j, k; - u8 nr, nk; - - switch (keylength) { - case AES_KEYLENGTH_128BIT: - nk = KEYLENGTH_4BYTES; - nr = NUMBER_OF_ROUNDS_10; - break; - - case AES_KEYLENGTH_192BIT: - nk = KEYLENGTH_6BYTES; - nr = NUMBER_OF_ROUNDS_12; - break; - case AES_KEYLENGTH_256BIT: - nk = KEYLENGTH_8BYTES; - nr = NUMBER_OF_ROUNDS_14; - break; - default: - return; - } - for (i = 0; i < nk; i++ ) - w_ring[i] = be32_to_cpu(*(u32 *)&key[4 * i]); - - i = 0; - temp = w_ring[nk - 1]; - while(i + nk < (nr + 1) * 4) { - if(!(i % nk)) { - /* RotWord(temp) */ - temp = (temp << 8) | (temp >> 24); - temp = aes_ks_subword(temp); - temp ^= round_constant[i / nk]; - } - else if (nk == 8 && (i % 4 == 0)) - temp = aes_ks_subword(temp); - w_ring[i % nk] ^= temp; - temp = w_ring[i % nk]; - i++; - } - i--; - for (k = 0, j = i % nk; k < nk; k++) { - *((u32 *)dec_key + k) = htonl(w_ring[j]); - j--; - if(j < 0) - j += nk; - } -} - #endif /* __CHCR_ALGO_H__ */ -- cgit v1.2.3