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crypto: 3des - move verification out of exported routine 

In preparation of moving the shared key expansion routine into the
DES library, move the verification done by __des3_ede_setkey() into
its callers.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Ard Biesheuvel 2019-08-15 12:01:07 +03:00 committed by Herbert Xu
parent dcb15794ec
commit 4fd4be0576
2 changed files with 9 additions and 5 deletions
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4
arch/x86/crypto/des3_ede_glue.c
View File

@ -348,6 +348,10 @@ static int des3_ede_x86_setkey(struct crypto_tfm *tfm, const u8 *key,
u32 i, j, tmp;
int err;
err = crypto_des3_ede_verify_key(tfm, key);
if (err)
return err;
/* Generate encryption context using generic implementation. */
err = __des3_ede_setkey(ctx->enc_expkey, &tfm->crt_flags, key, keylen);
if (err < 0)

10
crypto/des_generic.c
View File

@ -846,10 +846,6 @@ int __des3_ede_setkey(u32 *expkey, u32 *flags, const u8 *key,
{
int err;
err = __des3_verify_key(flags, key);
if (unlikely(err))
return err;
des_ekey(expkey, key); expkey += DES_EXPKEY_WORDS; key += DES_KEY_SIZE;
dkey(expkey, key); expkey += DES_EXPKEY_WORDS; key += DES_KEY_SIZE;
des_ekey(expkey, key);
@ -862,8 +858,12 @@ static int des3_ede_setkey(struct crypto_tfm *tfm, const u8 *key,
unsigned int keylen)
{
struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm);
u32 *flags = &tfm->crt_flags;
u32 *expkey = dctx->expkey;
int err;
err = crypto_des3_ede_verify_key(tfm, key);
if (err)
return err;
return __des3_ede_setkey(expkey, flags, key, keylen);
}