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1 /* crypto/asn1/d2i_pr.c */ |
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2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
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3 * All rights reserved. |
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4 * |
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5 * This package is an SSL implementation written |
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6 * by Eric Young (eay@cryptsoft.com). |
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7 * The implementation was written so as to conform with Netscapes SSL. |
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8 * |
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9 * This library is free for commercial and non-commercial use as long as |
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10 * the following conditions are aheared to. The following conditions |
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11 * apply to all code found in this distribution, be it the RC4, RSA, |
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12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
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13 * included with this distribution is covered by the same copyright terms |
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14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
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15 * |
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16 * Copyright remains Eric Young's, and as such any Copyright notices in |
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17 * the code are not to be removed. |
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18 * If this package is used in a product, Eric Young should be given attribution |
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19 * as the author of the parts of the library used. |
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20 * This can be in the form of a textual message at program startup or |
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21 * in documentation (online or textual) provided with the package. |
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22 * |
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23 * Redistribution and use in source and binary forms, with or without |
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24 * modification, are permitted provided that the following conditions |
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25 * are met: |
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26 * 1. Redistributions of source code must retain the copyright |
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27 * notice, this list of conditions and the following disclaimer. |
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28 * 2. Redistributions in binary form must reproduce the above copyright |
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29 * notice, this list of conditions and the following disclaimer in the |
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30 * documentation and/or other materials provided with the distribution. |
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31 * 3. All advertising materials mentioning features or use of this software |
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32 * must display the following acknowledgement: |
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33 * "This product includes cryptographic software written by |
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34 * Eric Young (eay@cryptsoft.com)" |
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35 * The word 'cryptographic' can be left out if the rouines from the library |
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36 * being used are not cryptographic related :-). |
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37 * 4. If you include any Windows specific code (or a derivative thereof) from |
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38 * the apps directory (application code) you must include an acknowledgement: |
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39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
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40 * |
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41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
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42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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51 * SUCH DAMAGE. |
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52 * |
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53 * The licence and distribution terms for any publically available version or |
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54 * derivative of this code cannot be changed. i.e. this code cannot simply be |
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55 * copied and put under another distribution licence |
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56 * [including the GNU Public Licence.] |
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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/bn.h> |
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62 #include <openssl/evp.h> |
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63 #include <openssl/objects.h> |
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64 #include <openssl/asn1.h> |
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65 #ifndef OPENSSL_NO_RSA |
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66 #include <openssl/rsa.h> |
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67 #endif |
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68 #ifndef OPENSSL_NO_DSA |
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69 #include <openssl/dsa.h> |
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70 #endif |
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71 #ifndef OPENSSL_NO_EC |
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72 #include <openssl/ec.h> |
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73 #endif |
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74 |
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75 EXPORT_C EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **a, const unsigned char **pp, |
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76 long length) |
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77 { |
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78 EVP_PKEY *ret; |
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79 |
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80 if ((a == NULL) || (*a == NULL)) |
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81 { |
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82 if ((ret=EVP_PKEY_new()) == NULL) |
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83 { |
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84 ASN1err(ASN1_F_D2I_PRIVATEKEY,ERR_R_EVP_LIB); |
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85 return(NULL); |
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86 } |
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87 } |
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88 else ret= *a; |
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89 |
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90 ret->save_type=type; |
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91 ret->type=EVP_PKEY_type(type); |
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92 switch (ret->type) |
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93 { |
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94 #ifndef OPENSSL_NO_RSA |
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95 case EVP_PKEY_RSA: |
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96 if ((ret->pkey.rsa=d2i_RSAPrivateKey(NULL, |
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97 (const unsigned char **)pp,length)) == NULL) /* TMP UGLY CAST */ |
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98 { |
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99 ASN1err(ASN1_F_D2I_PRIVATEKEY,ERR_R_ASN1_LIB); |
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100 goto err; |
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101 } |
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102 break; |
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103 #endif |
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104 #ifndef OPENSSL_NO_DSA |
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105 case EVP_PKEY_DSA: |
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106 if ((ret->pkey.dsa=d2i_DSAPrivateKey(NULL, |
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107 (const unsigned char **)pp,length)) == NULL) /* TMP UGLY CAST */ |
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108 { |
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109 ASN1err(ASN1_F_D2I_PRIVATEKEY,ERR_R_ASN1_LIB); |
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110 goto err; |
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111 } |
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112 break; |
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113 #endif |
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114 #ifndef OPENSSL_NO_EC |
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115 case EVP_PKEY_EC: |
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116 if ((ret->pkey.ec = d2i_ECPrivateKey(NULL, |
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117 (const unsigned char **)pp, length)) == NULL) |
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118 { |
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119 ASN1err(ASN1_F_D2I_PRIVATEKEY, ERR_R_ASN1_LIB); |
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120 goto err; |
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121 } |
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122 break; |
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123 #endif |
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124 default: |
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125 ASN1err(ASN1_F_D2I_PRIVATEKEY,ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE); |
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126 goto err; |
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127 /* break; */ |
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128 } |
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129 if (a != NULL) (*a)=ret; |
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130 return(ret); |
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131 err: |
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132 if ((ret != NULL) && ((a == NULL) || (*a != ret))) EVP_PKEY_free(ret); |
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133 return(NULL); |
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134 } |
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135 |
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136 /* This works like d2i_PrivateKey() except it automatically works out the type */ |
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137 |
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138 EXPORT_C EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **a, const unsigned char **pp, |
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139 long length) |
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140 { |
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141 STACK_OF(ASN1_TYPE) *inkey; |
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142 const unsigned char *p; |
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143 int keytype; |
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144 p = *pp; |
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145 /* Dirty trick: read in the ASN1 data into a STACK_OF(ASN1_TYPE): |
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146 * by analyzing it we can determine the passed structure: this |
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147 * assumes the input is surrounded by an ASN1 SEQUENCE. |
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148 */ |
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149 inkey = d2i_ASN1_SET_OF_ASN1_TYPE(NULL, &p, length, d2i_ASN1_TYPE, |
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150 ASN1_TYPE_free, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL); |
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151 /* Since we only need to discern "traditional format" RSA and DSA |
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152 * keys we can just count the elements. |
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153 */ |
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154 if(sk_ASN1_TYPE_num(inkey) == 6) |
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155 keytype = EVP_PKEY_DSA; |
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156 else if (sk_ASN1_TYPE_num(inkey) == 4) |
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157 keytype = EVP_PKEY_EC; |
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158 else keytype = EVP_PKEY_RSA; |
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159 sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free); |
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160 return d2i_PrivateKey(keytype, a, pp, length); |
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161 } |