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| author |   Herbert Xu <herbert@gondor.apana.org.au> | 2025-05-15 13:54:42 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2025-05-19 13:48:19 +0800 |
| commit | 8cf4c341f1931c20c564ab2ee0f9eb990a606cac (patch) | |
| tree | 8b90b15bf399fdd4f01ffb248a5b32dde76ab209 | |
| parent | crypto: hmac - Zero shash desc in setkey (diff) | |
| download | wireguard-linux-8cf4c341f1931c20c564ab2ee0f9eb990a606cac.tar.xz wireguard-linux-8cf4c341f1931c20c564ab2ee0f9eb990a606cac.zip | |
crypto: hmac - Add export_core and import_core
Add export_import and import_core so that hmac can be used as a
fallback by block-only drivers.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | crypto/hmac.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/crypto/hmac.c b/crypto/hmac.c index 4517e04bfbaa..e4749a1f93dd 100644 --- a/crypto/hmac.c +++ b/crypto/hmac.c @@ -90,6 +90,22 @@ static int hmac_import(struct shash_desc *pdesc, const void *in) return crypto_shash_import(desc, in); } +static int hmac_export_core(struct shash_desc *pdesc, void *out) +{ + struct shash_desc *desc = shash_desc_ctx(pdesc); + + return crypto_shash_export_core(desc, out); +} + +static int hmac_import_core(struct shash_desc *pdesc, const void *in) +{ + const struct hmac_ctx *tctx = crypto_shash_ctx(pdesc->tfm); + struct shash_desc *desc = shash_desc_ctx(pdesc); + + desc->tfm = tctx->hash; + return crypto_shash_import_core(desc, in); +} + static int hmac_init(struct shash_desc *pdesc) { const struct hmac_ctx *tctx = crypto_shash_ctx(pdesc->tfm); @@ -177,6 +193,7 @@ static int hmac_create(struct crypto_template *tmpl, struct rtattr **tb) return -ENOMEM; spawn = shash_instance_ctx(inst); + mask |= CRYPTO_AHASH_ALG_NO_EXPORT_CORE; err = crypto_grab_shash(spawn, shash_crypto_instance(inst), crypto_attr_alg_name(tb[1]), 0, mask); if (err) @@ -211,6 +228,8 @@ static int hmac_create(struct crypto_template *tmpl, struct rtattr **tb) inst->alg.finup = hmac_finup; inst->alg.export = hmac_export; inst->alg.import = hmac_import; + inst->alg.export_core = hmac_export_core; + inst->alg.import_core = hmac_import_core; inst->alg.setkey = hmac_setkey; inst->alg.init_tfm = hmac_init_tfm; inst->alg.clone_tfm = hmac_clone_tfm; |