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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2010-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#include "eddsa.h"
#ifdef HAVE_EDDSA
int get_eddsa_key(ErlNifEnv* env, int public, ERL_NIF_TERM key, EVP_PKEY **pkey)
{
/* key=[K] */
EVP_PKEY *result;
ERL_NIF_TERM head, tail, tail2, algo;
ErlNifBinary bin;
int type;
if (!enif_get_list_cell(env, key, &head, &tail))
goto err;
if (!enif_inspect_binary(env, head, &bin))
goto err;
if (!enif_get_list_cell(env, tail, &algo, &tail2))
goto err;
if (!enif_is_empty_list(env, tail2))
goto err;
if (algo == atom_ed25519) {
type = EVP_PKEY_ED25519;
} else if (algo == atom_ed448) {
type = EVP_PKEY_ED448;
} else {
goto err;
}
if (public)
result = EVP_PKEY_new_raw_public_key(type, NULL, bin.data, bin.size);
else
result = EVP_PKEY_new_raw_private_key(type, NULL, bin.data, bin.size);
if (result == NULL)
goto err;
*pkey = result;
return 1;
err:
return 0;
}
#endif
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