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/*
* Copyright 2022 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 <string.h> /* for memcpy() */
#include <openssl/core_names.h>
#include <openssl/crypto.h>
#include "eckem.h"
typedef struct {
unsigned int id;
const char *mode;
} KEM_MODE;
static const KEM_MODE eckem_modename_id_map[] = {
{ KEM_MODE_DHKEM, OSSL_KEM_PARAM_OPERATION_DHKEM },
{ 0, NULL }
};
int ossl_eckem_modename2id(const char *name)
{
size_t i;
if (name == NULL)
return KEM_MODE_UNDEFINED;
for (i = 0; eckem_modename_id_map[i].mode != NULL; ++i) {
if (OPENSSL_strcasecmp(name, eckem_modename_id_map[i].mode) == 0)
return eckem_modename_id_map[i].id;
}
return KEM_MODE_UNDEFINED;
}
/* suiteid = concat("KEM", I2OSP(kem_id, 2)) */
void ossl_dhkem_getsuiteid(unsigned char suiteid[5], uint16_t kemid)
{
memcpy(suiteid, "KEM", 3);
suiteid[3] = kemid >> 8;
suiteid[4] = kemid & 0xFF;
}
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