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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2010-2022. 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 "common.h"
#include "pbkdf2_hmac.h"
#include "digest.h"
ERL_NIF_TERM pbkdf2_hmac_nif(ErlNifEnv* env, int argc,
const ERL_NIF_TERM argv[])
{
#ifdef HAS_PKCS5_PBKDF2_HMAC
ErlNifBinary pass, salt, out;
ErlNifUInt64 iter, keylen;
struct digest_type_t* digp = NULL;
if ((digp = get_digest_type(argv[0])) == NULL)
return EXCP_BADARG_N(env, 0, "Bad digest type");
if (digp->md.p == NULL)
return EXCP_BADARG_N(env, 0, "md.p is not NULL");
if ((digp->flags & PBKDF2_ELIGIBLE_DIGEST) == 0)
return EXCP_BADARG_N(env, 0, "Not eligible digest type");
if (!enif_inspect_binary(env, argv[1], &pass))
return EXCP_BADARG_N(env, 1, "Not binary");
if (!enif_inspect_binary(env, argv[2], &salt))
return EXCP_BADARG_N(env, 2, "Not binary");
if (!enif_get_uint64(env, argv[3], &iter))
return EXCP_BADARG_N(env, 3, "Not integer");
if (iter < 1)
return EXCP_BADARG_N(env, 3, "Must be > 0");
if (!enif_get_uint64(env, argv[4], &keylen))
return EXCP_BADARG_N(env, 4, "Not integer");
if (keylen < 1)
return EXCP_BADARG_N(env, 4, "Must be > 0");
if (!enif_alloc_binary(keylen, &out))
return EXCP_ERROR(env, "Can't allocate binary");
if (!PKCS5_PBKDF2_HMAC((const char *)pass.data, pass.size,
salt.data, salt.size, iter,
digp->md.p,
keylen, out.data)) {
enif_release_binary(&out);
return EXCP_ERROR(env, "Low-level call failed");
}
return enif_make_binary(env, &out);
#else
return EXCP_NOTSUP(env, "Unsupported CRYPTO_PKCS5_PBKDF2_HMAC");
#endif
}
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