1 /* 2 * Copyright 2020-2021 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 <string.h> /* strcmp */ 11 #include <openssl/dh.h> 12 #include "internal/nelem.h" 13 #include "crypto/dh.h" 14 15 typedef struct dh_name2id_st{ 16 const char *name; 17 int id; 18 int type; 19 } DH_GENTYPE_NAME2ID; 20 21 /* Indicates that the paramgen_type can be used for either DH or DHX */ 22 #define TYPE_ANY -1 23 #ifndef OPENSSL_NO_DH 24 # define TYPE_DH DH_FLAG_TYPE_DH 25 # define TYPE_DHX DH_FLAG_TYPE_DHX 26 #else 27 # define TYPE_DH 0 28 # define TYPE_DHX 0 29 #endif 30 31 static const DH_GENTYPE_NAME2ID dhtype2id[] = 32 { 33 { "group", DH_PARAMGEN_TYPE_GROUP, TYPE_ANY }, 34 { "generator", DH_PARAMGEN_TYPE_GENERATOR, TYPE_DH }, 35 { "fips186_4", DH_PARAMGEN_TYPE_FIPS_186_4, TYPE_DHX }, 36 { "fips186_2", DH_PARAMGEN_TYPE_FIPS_186_2, TYPE_DHX }, 37 }; 38 39 const char *ossl_dh_gen_type_id2name(int id) 40 { 41 size_t i; 42 43 for (i = 0; i < OSSL_NELEM(dhtype2id); ++i) { 44 if (dhtype2id[i].id == id) 45 return dhtype2id[i].name; 46 } 47 return NULL; 48 } 49 50 #ifndef OPENSSL_NO_DH 51 int ossl_dh_gen_type_name2id(const char *name, int type) 52 { 53 size_t i; 54 55 for (i = 0; i < OSSL_NELEM(dhtype2id); ++i) { 56 if ((dhtype2id[i].type == TYPE_ANY 57 || type == dhtype2id[i].type) 58 && strcmp(dhtype2id[i].name, name) == 0) 59 return dhtype2id[i].id; 60 } 61 return -1; 62 } 63 #endif 64