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/*
* Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <openssl/core.h>
#include <openssl/buffer.h>
#include "internal/asn1.h"
#include "prov/bio.h"
#include "endecoder_local.h"
OSSL_FUNC_keymgmt_new_fn *
ossl_prov_get_keymgmt_new(const OSSL_DISPATCH *fns)
{
/* Pilfer the keymgmt dispatch table */
for (; fns->function_id != 0; fns++)
if (fns->function_id == OSSL_FUNC_KEYMGMT_NEW)
return OSSL_FUNC_keymgmt_new(fns);
return NULL;
}
OSSL_FUNC_keymgmt_free_fn *
ossl_prov_get_keymgmt_free(const OSSL_DISPATCH *fns)
{
/* Pilfer the keymgmt dispatch table */
for (; fns->function_id != 0; fns++)
if (fns->function_id == OSSL_FUNC_KEYMGMT_FREE)
return OSSL_FUNC_keymgmt_free(fns);
return NULL;
}
OSSL_FUNC_keymgmt_import_fn *
ossl_prov_get_keymgmt_import(const OSSL_DISPATCH *fns)
{
/* Pilfer the keymgmt dispatch table */
for (; fns->function_id != 0; fns++)
if (fns->function_id == OSSL_FUNC_KEYMGMT_IMPORT)
return OSSL_FUNC_keymgmt_import(fns);
return NULL;
}
OSSL_FUNC_keymgmt_export_fn *
ossl_prov_get_keymgmt_export(const OSSL_DISPATCH *fns)
{
/* Pilfer the keymgmt dispatch table */
for (; fns->function_id != 0; fns++)
if (fns->function_id == OSSL_FUNC_KEYMGMT_EXPORT)
return OSSL_FUNC_keymgmt_export(fns);
return NULL;
}
void *ossl_prov_import_key(const OSSL_DISPATCH *fns, void *provctx,
int selection, const OSSL_PARAM params[])
{
OSSL_FUNC_keymgmt_new_fn *kmgmt_new = ossl_prov_get_keymgmt_new(fns);
OSSL_FUNC_keymgmt_free_fn *kmgmt_free = ossl_prov_get_keymgmt_free(fns);
OSSL_FUNC_keymgmt_import_fn *kmgmt_import =
ossl_prov_get_keymgmt_import(fns);
void *key = NULL;
if (kmgmt_new != NULL && kmgmt_import != NULL && kmgmt_free != NULL) {
if ((key = kmgmt_new(provctx)) == NULL
|| !kmgmt_import(key, selection, params)) {
kmgmt_free(key);
key = NULL;
}
}
return key;
}
void ossl_prov_free_key(const OSSL_DISPATCH *fns, void *key)
{
OSSL_FUNC_keymgmt_free_fn *kmgmt_free = ossl_prov_get_keymgmt_free(fns);
if (kmgmt_free != NULL)
kmgmt_free(key);
}
int ossl_read_der(PROV_CTX *provctx, OSSL_CORE_BIO *cin, unsigned char **data,
long *len)
{
BUF_MEM *mem = NULL;
BIO *in = ossl_bio_new_from_core_bio(provctx, cin);
int ok;
if (in == NULL)
return 0;
ok = (asn1_d2i_read_bio(in, &mem) >= 0);
if (ok) {
*data = (unsigned char *)mem->data;
*len = (long)mem->length;
OPENSSL_free(mem);
}
BIO_free(in);
return ok;
}
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