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auth/hmac: complete overhaul

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Now that there are dedicated struct for initial parameters, make the
HMAC params provide a lc_hash_ctx to be used internally. This makes HMAC
less special and allows it to work with any hash, instead of needing
dedicated inits and ctx_news. As an upside, now it's possible to have a
one-pass HMAC.
This commit is contained in:
Lucas Gabriel Vuotto 2024-06-10 17:29:29 +00:00
parent f6bddfcd70
commit 666b833b98
4 changed files with 72 additions and 171 deletions
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10
lilcrypto.h
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@ -72,8 +72,9 @@ struct lc_hash_impl;
/* Authentication. */
struct lc_hmac_params {
size_t keylen;
uint8_t *key;
struct lc_hash_ctx *hash;
size_t keylen;
uint8_t *key;
};
struct lc_poly1305_params {
@ -146,11 +147,8 @@ int lc_auth(const struct lc_auth_impl *, uint8_t *, size_t *, void *,
struct lc_auth_ctx *lc_auth_ctx_new(const struct lc_auth_impl *);
void lc_auth_ctx_free(struct lc_auth_ctx *);
const struct lc_auth_impl *lc_auth_impl_hmac(void);
const struct lc_auth_impl *lc_auth_impl_poly1305(void);
const struct lc_auth_impl *lc_auth_impl_hmac_sha224(void);
const struct lc_auth_impl *lc_auth_impl_hmac_sha256(void);
const struct lc_auth_impl *lc_auth_impl_hmac_sha384(void);
const struct lc_auth_impl *lc_auth_impl_hmac_sha512(void);
/*