1 /* $OpenBSD: tb_eckey.c,v 1.2 2019/01/19 01:18:56 tb Exp $ */ 2 /* ==================================================================== 3 * Copyright (c) 2000 The OpenSSL Project. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the 15 * distribution. 16 * 17 * 3. All advertising materials mentioning features or use of this 18 * software must display the following acknowledgment: 19 * "This product includes software developed by the OpenSSL Project 20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 21 * 22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 23 * endorse or promote products derived from this software without 24 * prior written permission. For written permission, please contact 25 * licensing@OpenSSL.org. 26 * 27 * 5. Products derived from this software may not be called "OpenSSL" 28 * nor may "OpenSSL" appear in their names without prior written 29 * permission of the OpenSSL Project. 30 * 31 * 6. Redistributions of any form whatsoever must retain the following 32 * acknowledgment: 33 * "This product includes software developed by the OpenSSL Project 34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 35 * 36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 47 * OF THE POSSIBILITY OF SUCH DAMAGE. 48 * ==================================================================== 49 * 50 * This product includes cryptographic software written by Eric Young 51 * (eay@cryptsoft.com). This product includes software written by Tim 52 * Hudson (tjh@cryptsoft.com). 53 * 54 */ 55 56 #include "eng_int.h" 57 58 static ENGINE_TABLE *ec_table = NULL; 59 static const int dummy_nid = 1; 60 61 void 62 ENGINE_unregister_EC(ENGINE *e) 63 { 64 engine_table_unregister(&ec_table, e); 65 } 66 67 static void 68 engine_unregister_all_EC(void) 69 { 70 engine_table_cleanup(&ec_table); 71 } 72 73 int 74 ENGINE_register_EC(ENGINE *e) 75 { 76 if (e->ec_meth) 77 return engine_table_register(&ec_table, 78 engine_unregister_all_EC, e, &dummy_nid, 1, 0); 79 return 1; 80 } 81 82 void 83 ENGINE_register_all_EC(void) 84 { 85 ENGINE *e; 86 87 for (e = ENGINE_get_first(); e != NULL; e = ENGINE_get_next(e)) 88 ENGINE_register_EC(e); 89 } 90 91 int 92 ENGINE_set_default_EC(ENGINE *e) 93 { 94 if (e->ec_meth != NULL) 95 return engine_table_register(&ec_table, 96 engine_unregister_all_EC, e, &dummy_nid, 1, 1); 97 return 1; 98 } 99 100 /* 101 * Exposed API function to get a functional reference from the implementation 102 * table (ie. try to get a functional reference from the tabled structural 103 * references). 104 */ 105 ENGINE * 106 ENGINE_get_default_EC(void) 107 { 108 return engine_table_select(&ec_table, dummy_nid); 109 } 110 111 /* Obtains an EC_KEY implementation from an ENGINE functional reference */ 112 const EC_KEY_METHOD * 113 ENGINE_get_EC(const ENGINE *e) 114 { 115 return e->ec_meth; 116 } 117 118 /* Sets an EC_KEY implementation in an ENGINE structure */ 119 int 120 ENGINE_set_EC(ENGINE *e, const EC_KEY_METHOD *ec_meth) 121 { 122 e->ec_meth = ec_meth; 123 return 1; 124 } 125