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crypto: aes - Precompute tables

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The tables used by the various AES algorithms are currently
computed at run-time.  This has created an init ordering problem
because some AES algorithms may be registered before the tables
have been initialised.

This patch gets around this whole thing by precomputing the tables.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2008-12-25 11:05:13 +11:00
parent ca38a814c6
commit 0ee4a96902
2 changed files with 1060 additions and 95 deletions
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1147
crypto/aes_generic.c
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8
include/crypto/aes.h
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@ -23,10 +23,10 @@ struct crypto_aes_ctx {
u32 key_dec[AES_MAX_KEYLENGTH_U32];
};
extern u32 crypto_ft_tab[4][256];
extern u32 crypto_fl_tab[4][256];
extern u32 crypto_it_tab[4][256];
extern u32 crypto_il_tab[4][256];
extern const u32 crypto_ft_tab[4][256];
extern const u32 crypto_fl_tab[4][256];
extern const u32 crypto_it_tab[4][256];
extern const u32 crypto_il_tab[4][256];
int crypto_aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
unsigned int key_len);