1*e7be843bSPierre Pronchery /* 2*e7be843bSPierre Pronchery * Copyright 2022 The OpenSSL Project Authors. All Rights Reserved. 3*e7be843bSPierre Pronchery * 4*e7be843bSPierre Pronchery * Licensed under the Apache License 2.0 (the "License"). You may not use 5*e7be843bSPierre Pronchery * this file except in compliance with the License. You can obtain a copy 6*e7be843bSPierre Pronchery * in the file LICENSE in the source distribution or at 7*e7be843bSPierre Pronchery * https://www.openssl.org/source/license.html 8*e7be843bSPierre Pronchery */ 9*e7be843bSPierre Pronchery 10*e7be843bSPierre Pronchery #include "crypto/types.h" 11*e7be843bSPierre Pronchery 12*e7be843bSPierre Pronchery #ifndef OPENSSL_NO_EC 13*e7be843bSPierre Pronchery 14*e7be843bSPierre Pronchery /* RFC 9180 Labels used for Extract and Expand operations */ 15*e7be843bSPierre Pronchery 16*e7be843bSPierre Pronchery /* ASCII: "eae_prk", in hex for EBCDIC compatibility */ 17*e7be843bSPierre Pronchery #define OSSL_DHKEM_LABEL_EAE_PRK "\x65\x61\x65\x5F\x70\x72\x6B" 18*e7be843bSPierre Pronchery /* ASCII: "shared_secret", in hex for EBCDIC compatibility */ 19*e7be843bSPierre Pronchery #define OSSL_DHKEM_LABEL_SHARED_SECRET "\x73\x68\x61\x72\x65\x64\x5F\x73\x65\x63\x72\x65\x74" 20*e7be843bSPierre Pronchery /* ASCII: "dkp_prk", in hex for EBCDIC compatibility */ 21*e7be843bSPierre Pronchery #define OSSL_DHKEM_LABEL_DKP_PRK "\x64\x6B\x70\x5F\x70\x72\x6B" 22*e7be843bSPierre Pronchery /* ASCII: "candidate", in hex for EBCDIC compatibility */ 23*e7be843bSPierre Pronchery #define OSSL_DHKEM_LABEL_CANDIDATE "\x63\x61\x6E\x64\x69\x64\x61\x74\x65" 24*e7be843bSPierre Pronchery /* ASCII: "sk", in hex for EBCDIC compatibility */ 25*e7be843bSPierre Pronchery #define OSSL_DHKEM_LABEL_SK "\x73\x6B" 26*e7be843bSPierre Pronchery 27*e7be843bSPierre Pronchery int ossl_ecx_dhkem_derive_private(ECX_KEY *ecx, unsigned char *privout, 28*e7be843bSPierre Pronchery const unsigned char *ikm, size_t ikmlen); 29*e7be843bSPierre Pronchery int ossl_ec_dhkem_derive_private(EC_KEY *ec, BIGNUM *privout, 30*e7be843bSPierre Pronchery const unsigned char *ikm, size_t ikmlen); 31*e7be843bSPierre Pronchery #endif 32