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1 /* dsa_asn1.c */ |
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2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL |
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3 * project 2000. |
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4 */ |
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5 /* ==================================================================== |
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6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved. |
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7 * |
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8 * Redistribution and use in source and binary forms, with or without |
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9 * modification, are permitted provided that the following conditions |
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10 * are met: |
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11 * |
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12 * 1. Redistributions of source code must retain the above copyright |
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13 * notice, this list of conditions and the following disclaimer. |
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14 * |
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15 * 2. Redistributions in binary form must reproduce the above copyright |
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16 * notice, this list of conditions and the following disclaimer in |
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17 * the documentation and/or other materials provided with the |
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18 * distribution. |
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19 * |
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20 * 3. All advertising materials mentioning features or use of this |
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21 * software must display the following acknowledgment: |
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22 * "This product includes software developed by the OpenSSL Project |
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23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
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24 * |
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25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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26 * endorse or promote products derived from this software without |
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27 * prior written permission. For written permission, please contact |
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28 * licensing@OpenSSL.org. |
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29 * |
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30 * 5. Products derived from this software may not be called "OpenSSL" |
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31 * nor may "OpenSSL" appear in their names without prior written |
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32 * permission of the OpenSSL Project. |
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33 * |
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34 * 6. Redistributions of any form whatsoever must retain the following |
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35 * acknowledgment: |
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36 * "This product includes software developed by the OpenSSL Project |
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37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
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38 * |
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39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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50 * OF THE POSSIBILITY OF SUCH DAMAGE. |
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51 * ==================================================================== |
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52 * |
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53 * This product includes cryptographic software written by Eric Young |
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54 * (eay@cryptsoft.com). This product includes software written by Tim |
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55 * Hudson (tjh@cryptsoft.com). |
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56 * |
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57 */ |
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58 |
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59 #include <stdio.h> |
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60 #include "cryptlib.h" |
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61 #include <openssl/dsa.h> |
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62 #include <openssl/asn1.h> |
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63 #include <openssl/asn1t.h> |
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64 |
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65 /* Override the default new methods */ |
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66 static int sig_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it) |
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67 { |
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68 if(operation == ASN1_OP_NEW_PRE) { |
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69 DSA_SIG *sig; |
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70 sig = OPENSSL_malloc(sizeof(DSA_SIG)); |
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71 #ifdef SYMBIAN |
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72 if(sig==NULL) |
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73 { |
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74 DSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE); |
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75 return 0; |
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76 } |
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77 #endif |
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78 sig->r = NULL; |
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79 sig->s = NULL; |
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80 *pval = (ASN1_VALUE *)sig; |
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81 if(sig) return 2; |
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82 DSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE); |
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83 return 0; |
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84 } |
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85 return 1; |
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86 } |
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87 |
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88 ASN1_SEQUENCE_cb(DSA_SIG, sig_cb) = { |
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89 ASN1_SIMPLE(DSA_SIG, r, CBIGNUM), |
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90 ASN1_SIMPLE(DSA_SIG, s, CBIGNUM) |
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91 } ASN1_SEQUENCE_END_cb(DSA_SIG, DSA_SIG) |
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92 |
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93 IMPLEMENT_ASN1_FUNCTIONS_const(DSA_SIG) |
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94 |
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95 /* Override the default free and new methods */ |
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96 static int dsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it) |
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97 { |
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98 if(operation == ASN1_OP_NEW_PRE) { |
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99 *pval = (ASN1_VALUE *)DSA_new(); |
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100 if(*pval) return 2; |
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101 return 0; |
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102 } else if(operation == ASN1_OP_FREE_PRE) { |
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103 DSA_free((DSA *)*pval); |
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104 *pval = NULL; |
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105 return 2; |
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106 } |
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107 return 1; |
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108 } |
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109 |
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110 ASN1_SEQUENCE_cb(DSAPrivateKey, dsa_cb) = { |
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111 ASN1_SIMPLE(DSA, version, LONG), |
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112 ASN1_SIMPLE(DSA, p, BIGNUM), |
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113 ASN1_SIMPLE(DSA, q, BIGNUM), |
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114 ASN1_SIMPLE(DSA, g, BIGNUM), |
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115 ASN1_SIMPLE(DSA, pub_key, BIGNUM), |
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116 ASN1_SIMPLE(DSA, priv_key, BIGNUM) |
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117 } ASN1_SEQUENCE_END_cb(DSA, DSAPrivateKey) |
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118 |
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119 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPrivateKey, DSAPrivateKey) |
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120 |
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121 ASN1_SEQUENCE_cb(DSAparams, dsa_cb) = { |
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122 ASN1_SIMPLE(DSA, p, BIGNUM), |
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123 ASN1_SIMPLE(DSA, q, BIGNUM), |
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124 ASN1_SIMPLE(DSA, g, BIGNUM), |
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125 } ASN1_SEQUENCE_END_cb(DSA, DSAparams) |
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126 |
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127 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAparams, DSAparams) |
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128 |
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129 /* DSA public key is a bit trickier... its effectively a CHOICE type |
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130 * decided by a field called write_params which can either write out |
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131 * just the public key as an INTEGER or the parameters and public key |
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132 * in a SEQUENCE |
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133 */ |
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134 |
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135 ASN1_SEQUENCE(dsa_pub_internal) = { |
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136 ASN1_SIMPLE(DSA, pub_key, BIGNUM), |
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137 ASN1_SIMPLE(DSA, p, BIGNUM), |
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138 ASN1_SIMPLE(DSA, q, BIGNUM), |
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139 ASN1_SIMPLE(DSA, g, BIGNUM) |
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140 } ASN1_SEQUENCE_END_name(DSA, dsa_pub_internal) |
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141 |
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142 ASN1_CHOICE_cb(DSAPublicKey, dsa_cb) = { |
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143 ASN1_SIMPLE(DSA, pub_key, BIGNUM), |
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144 ASN1_EX_COMBINE(0, 0, dsa_pub_internal) |
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145 } ASN1_CHOICE_END_cb(DSA, DSAPublicKey, write_params) |
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146 |
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147 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPublicKey, DSAPublicKey) |