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1 /* crypto/engine/tb_ecdh.c */ |
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2 /* ==================================================================== |
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3 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. |
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4 * |
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5 * The Elliptic Curve Public-Key Crypto Library (ECC Code) included |
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6 * herein is developed by SUN MICROSYSTEMS, INC., and is contributed |
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7 * to the OpenSSL project. |
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8 * |
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9 * The ECC Code is licensed pursuant to the OpenSSL open source |
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10 * license provided below. |
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11 * |
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12 * The ECDH engine software is originally written by Nils Gura and |
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13 * Douglas Stebila of Sun Microsystems Laboratories. |
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14 * |
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15 */ |
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16 /* ==================================================================== |
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17 * Copyright (c) 2000-2002 The OpenSSL Project. All rights reserved. |
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18 * |
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19 * Redistribution and use in source and binary forms, with or without |
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20 * modification, are permitted provided that the following conditions |
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21 * are met: |
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22 * |
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23 * 1. Redistributions of source code must retain the above copyright |
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24 * notice, this list of conditions and the following disclaimer. |
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25 * |
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26 * 2. Redistributions in binary form must reproduce the above copyright |
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27 * notice, this list of conditions and the following disclaimer in |
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28 * the documentation and/or other materials provided with the |
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29 * distribution. |
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30 * |
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31 * 3. All advertising materials mentioning features or use of this |
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32 * software must display the following acknowledgment: |
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33 * "This product includes software developed by the OpenSSL Project |
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34 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
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35 * |
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36 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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37 * endorse or promote products derived from this software without |
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38 * prior written permission. For written permission, please contact |
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39 * licensing@OpenSSL.org. |
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40 * |
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41 * 5. Products derived from this software may not be called "OpenSSL" |
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42 * nor may "OpenSSL" appear in their names without prior written |
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43 * permission of the OpenSSL Project. |
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44 * |
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45 * 6. Redistributions of any form whatsoever must retain the following |
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46 * acknowledgment: |
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47 * "This product includes software developed by the OpenSSL Project |
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48 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
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49 * |
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50 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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51 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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53 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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54 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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56 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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57 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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59 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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60 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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61 * OF THE POSSIBILITY OF SUCH DAMAGE. |
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62 * ==================================================================== |
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63 * |
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64 * This product includes cryptographic software written by Eric Young |
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65 * (eay@cryptsoft.com). This product includes software written by Tim |
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66 * Hudson (tjh@cryptsoft.com). |
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67 * |
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68 */ |
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69 /* |
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70 © Portions copyright (c) 2006 Nokia Corporation. All rights reserved. |
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71 */ |
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72 |
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73 |
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74 #include "eng_int.h" |
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75 #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__))) |
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76 #include "libcrypto_wsd_macros.h" |
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77 #include "libcrypto_wsd.h" |
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78 #endif |
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79 |
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80 /* If this symbol is defined then ENGINE_get_default_ECDH(), the function that is |
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81 * used by ECDH to hook in implementation code and cache defaults (etc), will |
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82 * display brief debugging summaries to stderr with the 'nid'. */ |
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83 /* #define ENGINE_ECDH_DEBUG */ |
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84 #ifndef EMULATOR |
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85 static ENGINE_TABLE *ecdh_table = NULL; |
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86 #else |
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87 GET_STATIC_VAR_FROM_TLS(ecdh_table,tb_ecdh,ENGINE_TABLE *) |
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88 #define ecdh_table (*GET_WSD_VAR_NAME(ecdh_table,tb_ecdh, s)()) |
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89 #endif |
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90 static const int dummy_nid = 1; |
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91 |
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92 void ENGINE_unregister_ECDH(ENGINE *e) |
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93 { |
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94 engine_table_unregister(&ecdh_table, e); |
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95 } |
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96 |
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97 static void engine_unregister_all_ECDH(void) |
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98 { |
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99 engine_table_cleanup(&ecdh_table); |
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100 } |
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101 |
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102 int ENGINE_register_ECDH(ENGINE *e) |
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103 { |
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104 if(e->ecdh_meth) |
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105 return engine_table_register(&ecdh_table, |
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106 engine_unregister_all_ECDH, e, &dummy_nid, 1, 0); |
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107 return 1; |
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108 } |
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109 |
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110 void ENGINE_register_all_ECDH() |
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111 { |
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112 ENGINE *e; |
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113 |
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114 for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e)) |
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115 ENGINE_register_ECDH(e); |
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116 } |
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117 |
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118 int ENGINE_set_default_ECDH(ENGINE *e) |
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119 { |
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120 if(e->ecdh_meth) |
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121 return engine_table_register(&ecdh_table, |
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122 engine_unregister_all_ECDH, e, &dummy_nid, 1, 1); |
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123 return 1; |
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124 } |
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125 |
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126 /* Exposed API function to get a functional reference from the implementation |
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127 * table (ie. try to get a functional reference from the tabled structural |
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128 * references). */ |
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129 ENGINE *ENGINE_get_default_ECDH(void) |
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130 { |
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131 return engine_table_select(&ecdh_table, dummy_nid); |
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132 } |
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133 |
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134 /* Obtains an ECDH implementation from an ENGINE functional reference */ |
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135 const ECDH_METHOD *ENGINE_get_ECDH(const ENGINE *e) |
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136 { |
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137 return e->ecdh_meth; |
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138 } |
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139 |
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140 /* Sets an ECDH implementation in an ENGINE structure */ |
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141 int ENGINE_set_ECDH(ENGINE *e, const ECDH_METHOD *ecdh_meth) |
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142 { |
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143 e->ecdh_meth = ecdh_meth; |
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144 return 1; |
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145 } |