Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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>
+19
+19
crypto/hmac.c
+19
crypto/hmac.c
···
90
90
return crypto_shash_import(desc, in);
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}
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+
static int hmac_export_core(struct shash_desc *pdesc, void *out)
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+
{
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+
struct shash_desc *desc = shash_desc_ctx(pdesc);
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+
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+
return crypto_shash_export_core(desc, out);
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+
}
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+
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+
static int hmac_import_core(struct shash_desc *pdesc, const void *in)
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+
{
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+
const struct hmac_ctx *tctx = crypto_shash_ctx(pdesc->tfm);
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+
struct shash_desc *desc = shash_desc_ctx(pdesc);
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+
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+
desc->tfm = tctx->hash;
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+
return crypto_shash_import_core(desc, in);
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+
}
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+
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static int hmac_init(struct shash_desc *pdesc)
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{
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const struct hmac_ctx *tctx = crypto_shash_ctx(pdesc->tfm);
···
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return -ENOMEM;
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spawn = shash_instance_ctx(inst);
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+
mask |= CRYPTO_AHASH_ALG_NO_EXPORT_CORE;
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err = crypto_grab_shash(spawn, shash_crypto_instance(inst),
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crypto_attr_alg_name(tb[1]), 0, mask);
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if (err)
···
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inst->alg.finup = hmac_finup;
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inst->alg.export = hmac_export;
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inst->alg.import = hmac_import;
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+
inst->alg.export_core = hmac_export_core;
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+
inst->alg.import_core = hmac_import_core;
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inst->alg.setkey = hmac_setkey;
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inst->alg.init_tfm = hmac_init_tfm;
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inst->alg.clone_tfm = hmac_clone_tfm;