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 32
