diff options
Diffstat (limited to 'crypto/hmac.c')
| -rw-r--r-- | crypto/hmac.c | 35 |
1 files changed, 10 insertions, 25 deletions
diff --git a/crypto/hmac.c b/crypto/hmac.c index ba36ddf50037..4517e04bfbaa 100644 --- a/crypto/hmac.c +++ b/crypto/hmac.c @@ -13,13 +13,11 @@ #include <crypto/hmac.h> #include <crypto/internal/hash.h> -#include <crypto/scatterwalk.h> #include <linux/err.h> #include <linux/fips.h> -#include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> -#include <linux/scatterlist.h> +#include <linux/slab.h> #include <linux/string.h> struct hmac_ctx { @@ -39,7 +37,7 @@ static int hmac_setkey(struct crypto_shash *parent, u8 *ipad = &tctx->pads[0]; u8 *opad = &tctx->pads[ss]; SHASH_DESC_ON_STACK(shash, hash); - unsigned int i; + int err, i; if (fips_enabled && (keylen < 112 / 8)) return -EINVAL; @@ -65,12 +63,14 @@ static int hmac_setkey(struct crypto_shash *parent, opad[i] ^= HMAC_OPAD_VALUE; } - return crypto_shash_init(shash) ?: - crypto_shash_update(shash, ipad, bs) ?: - crypto_shash_export(shash, ipad) ?: - crypto_shash_init(shash) ?: - crypto_shash_update(shash, opad, bs) ?: - crypto_shash_export(shash, opad); + err = crypto_shash_init(shash) ?: + crypto_shash_update(shash, ipad, bs) ?: + crypto_shash_export(shash, ipad) ?: + crypto_shash_init(shash) ?: + crypto_shash_update(shash, opad, bs) ?: + crypto_shash_export(shash, opad); + shash_desc_zero(shash); + return err; } static int hmac_export(struct shash_desc *pdesc, void *out) @@ -105,20 +105,6 @@ static int hmac_update(struct shash_desc *pdesc, return crypto_shash_update(desc, data, nbytes); } -static int hmac_final(struct shash_desc *pdesc, u8 *out) -{ - struct crypto_shash *parent = pdesc->tfm; - int ds = crypto_shash_digestsize(parent); - int ss = crypto_shash_statesize(parent); - const struct hmac_ctx *tctx = crypto_shash_ctx(parent); - const u8 *opad = &tctx->pads[ss]; - struct shash_desc *desc = shash_desc_ctx(pdesc); - - return crypto_shash_final(desc, out) ?: - crypto_shash_import(desc, opad) ?: - crypto_shash_finup(desc, out, ds, out); -} - static int hmac_finup(struct shash_desc *pdesc, const u8 *data, unsigned int nbytes, u8 *out) { @@ -222,7 +208,6 @@ static int hmac_create(struct crypto_template *tmpl, struct rtattr **tb) inst->alg.descsize = sizeof(struct shash_desc) + salg->descsize; inst->alg.init = hmac_init; inst->alg.update = hmac_update; - inst->alg.final = hmac_final; inst->alg.finup = hmac_finup; inst->alg.export = hmac_export; inst->alg.import = hmac_import; |