]> git.ipfire.org Git - thirdparty/openssl.git/blob - providers/implementations/include/prov/ecx.h
Add HPKE DHKEM provider support for EC, X25519 and X448.
[thirdparty/openssl.git] / providers / implementations / include / prov / ecx.h
1 /*
2 * Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #include "crypto/types.h"
11
12 #ifndef OPENSSL_NO_EC
13
14 /* RFC 9180 Labels used for Extract and Expand operations */
15
16 /* ASCII: "eae_prk", in hex for EBCDIC compatibility */
17 #define OSSL_DHKEM_LABEL_EAE_PRK "\x65\x61\x65\x5F\x70\x72\x6B"
18 /* ASCII: "shared_secret", in hex for EBCDIC compatibility */
19 #define OSSL_DHKEM_LABEL_SHARED_SECRET "\x73\x68\x61\x72\x65\x64\x5F\x73\x65\x63\x72\x65\x74"
20 /* ASCII: "dkp_prk", in hex for EBCDIC compatibility */
21 #define OSSL_DHKEM_LABEL_DKP_PRK "\x64\x6B\x70\x5F\x70\x72\x6B"
22 /* ASCII: "candidate", in hex for EBCDIC compatibility */
23 #define OSSL_DHKEM_LABEL_CANDIDATE "\x63\x61\x6E\x64\x69\x64\x61\x74\x65"
24 /* ASCII: "sk", in hex for EBCDIC compatibility */
25 #define OSSL_DHKEM_LABEL_SK "\x73\x6B"
26
27 int ossl_ecx_dhkem_derive_private(ECX_KEY *ecx, unsigned char *privout,
28 const unsigned char *ikm, size_t ikmlen);
29 int ossl_ec_dhkem_derive_private(EC_KEY *ec, BIGNUM *privout,
30 const unsigned char *ikm, size_t ikmlen);
31 #endif