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k942 kdf: implement ctx dup operation

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Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/17572)
This commit is contained in:
Pauli 2022-01-24 17:38:57 +11:00
parent 2722eeceaa
commit 769cd46540
1 changed files with 37 additions and 0 deletions
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37
providers/implementations/kdfs/x942kdf.c
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@ -26,6 +26,7 @@
#define X942KDF_MAX_INLEN (1 << 30)
static OSSL_FUNC_kdf_newctx_fn x942kdf_new;
static OSSL_FUNC_kdf_dupctx_fn x942kdf_dup;
static OSSL_FUNC_kdf_freectx_fn x942kdf_free;
static OSSL_FUNC_kdf_reset_fn x942kdf_reset;
static OSSL_FUNC_kdf_derive_fn x942kdf_derive;
@ -368,6 +369,41 @@ static void x942kdf_free(void *vctx)
}
}
static void *x942kdf_dup(void *vctx)
{
const KDF_X942 *src = (const KDF_X942 *)vctx;
KDF_X942 *dest;
dest = x942kdf_new(src->provctx);
if (dest != NULL) {
if (!ossl_prov_memdup(src->secret, src->secret_len,
&dest->secret , &dest->secret_len)
|| !ossl_prov_memdup(src->acvpinfo, src->acvpinfo_len,
&dest->acvpinfo , &dest->acvpinfo_len)
|| !ossl_prov_memdup(src->partyuinfo, src->partyuinfo_len,
&dest->partyuinfo , &dest->partyuinfo_len)
|| !ossl_prov_memdup(src->partyvinfo, src->partyvinfo_len,
&dest->partyvinfo , &dest->partyvinfo_len)
|| !ossl_prov_memdup(src->supp_pubinfo, src->supp_pubinfo_len,
&dest->supp_pubinfo,
&dest->supp_pubinfo_len)
|| !ossl_prov_memdup(src->supp_privinfo, src->supp_privinfo_len,
&dest->supp_privinfo,
&dest->supp_privinfo_len)
|| !ossl_prov_digest_copy(&dest->digest, &src->digest))
goto err;
dest->cek_oid = src->cek_oid;
dest->cek_oid_len = src->cek_oid_len;
dest->dkm_len = src->dkm_len;
dest->use_keybits = src->use_keybits;
}
return dest;
err:
x942kdf_free(dest);
return NULL;
}
static int x942kdf_set_buffer(unsigned char **out, size_t *out_len,
const OSSL_PARAM *p)
{
@ -579,6 +615,7 @@ static const OSSL_PARAM *x942kdf_gettable_ctx_params(ossl_unused void *ctx,
const OSSL_DISPATCH ossl_kdf_x942_kdf_functions[] = {
{ OSSL_FUNC_KDF_NEWCTX, (void(*)(void))x942kdf_new },
{ OSSL_FUNC_KDF_DUPCTX, (void(*)(void))x942kdf_dup },
{ OSSL_FUNC_KDF_FREECTX, (void(*)(void))x942kdf_free },
{ OSSL_FUNC_KDF_RESET, (void(*)(void))x942kdf_reset },
{ OSSL_FUNC_KDF_DERIVE, (void(*)(void))x942kdf_derive },