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/* vim: set tabstop=8 shiftwidth=4 softtabstop=4 expandtab smarttab colorcolumn=80: */
/*
* Copyright 2016 Red Hat, Inc.
*
* 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.
*/
#include "misc.h"
#include "../hooks.h"
#include <jose/openssl.h>
#include <string.h>
declare_cleanup(EC_KEY)
static bool
jwk_make_handles(jose_cfg_t *cfg, const json_t *jwk)
{
const char *kty = NULL;
if (json_unpack((json_t *) jwk, "{s:s}", "kty", &kty) == -1)
return false;
return strcmp(kty, "EC") == 0;
}
static bool
jwk_make_execute(jose_cfg_t *cfg, json_t *jwk)
{
openssl_auto(EC_KEY) *key = NULL;
const char *crv = "P-256";
json_auto_t *out = NULL;
int nid = NID_undef;
if (!jwk_make_handles(cfg, jwk))
return false;
if (json_unpack(jwk, "{s?s}", "crv", &crv) < 0)
return false;
switch (str2enum(crv, "P-256", "P-384", "P-521", "secp256k1", NULL)) {
case 0: nid = NID_X9_62_prime256v1; break;
case 1: nid = NID_secp384r1; break;
case 2: nid = NID_secp521r1; break;
case 3: nid = NID_secp256k1; break;
default: return false;
}
key = EC_KEY_new_by_curve_name(nid);
if (!key)
return false;
if (EC_KEY_generate_key(key) <= 0)
return false;
out = jose_openssl_jwk_from_EC_KEY(cfg, key);
if (!out)
return false;
return copy_val(out, jwk, "crv", "x", "y", "d", NULL);
}
static void __attribute__((constructor))
constructor(void)
{
static jose_hook_jwk_t jwk = {
.kind = JOSE_HOOK_JWK_KIND_MAKE,
.make.handles = jwk_make_handles,
.make.execute = jwk_make_execute
};
jose_hook_jwk_push(&jwk);
}
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