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1 /* evp_pbe.c */ |
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2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL |
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3 * project 1999. |
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4 */ |
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5 /* ==================================================================== |
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6 * Copyright (c) 1999 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 © Portions copyright (c) 2006 Nokia Corporation. All rights reserved. |
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60 */ |
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61 |
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62 |
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63 #include <stdio.h> |
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64 #include "cryptlib.h" |
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65 #include <openssl/evp.h> |
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66 #include <openssl/x509.h> |
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67 #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__))) |
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68 #include "libcrypto_wsd_macros.h" |
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69 #include "libcrypto_wsd.h" |
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70 #endif |
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71 |
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72 |
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73 |
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74 #ifndef EMULATOR |
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75 /* Password based encryption (PBE) functions */ |
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76 |
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77 static STACK *pbe_algs; |
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78 #else |
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79 GET_STATIC_VAR_FROM_TLS(pbe_algs,evp_pbe,STACK *) |
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80 #define pbe_algs (*GET_WSD_VAR_NAME(pbe_algs,evp_pbe,s)()) |
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81 #endif |
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82 |
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83 /* Setup a cipher context from a PBE algorithm */ |
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84 |
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85 typedef struct { |
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86 int pbe_nid; |
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87 const EVP_CIPHER *cipher; |
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88 const EVP_MD *md; |
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89 EVP_PBE_KEYGEN *keygen; |
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90 } EVP_PBE_CTL; |
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91 |
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92 EXPORT_C int EVP_PBE_CipherInit(ASN1_OBJECT *pbe_obj, const char *pass, int passlen, |
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93 ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de) |
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94 { |
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95 |
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96 EVP_PBE_CTL *pbetmp, pbelu; |
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97 int i; |
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98 pbelu.pbe_nid = OBJ_obj2nid(pbe_obj); |
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99 if (pbelu.pbe_nid != NID_undef) i = sk_find(pbe_algs, (char *)&pbelu); |
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100 else i = -1; |
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101 |
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102 if (i == -1) { |
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103 char obj_tmp[80]; |
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104 EVPerr(EVP_F_EVP_PBE_CIPHERINIT,EVP_R_UNKNOWN_PBE_ALGORITHM); |
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105 if (!pbe_obj) BUF_strlcpy (obj_tmp, "NULL", sizeof obj_tmp); |
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106 else i2t_ASN1_OBJECT(obj_tmp, sizeof obj_tmp, pbe_obj); |
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107 ERR_add_error_data(2, "TYPE=", obj_tmp); |
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108 return 0; |
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109 } |
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110 if(!pass) passlen = 0; |
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111 else if (passlen == -1) passlen = strlen(pass); |
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112 pbetmp = (EVP_PBE_CTL *)sk_value (pbe_algs, i); |
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113 i = (*pbetmp->keygen)(ctx, pass, passlen, param, pbetmp->cipher, |
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114 pbetmp->md, en_de); |
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115 if (!i) { |
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116 EVPerr(EVP_F_EVP_PBE_CIPHERINIT,EVP_R_KEYGEN_FAILURE); |
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117 return 0; |
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118 } |
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119 return 1; |
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120 } |
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121 |
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122 static int pbe_cmp(const char * const *a, const char * const *b) |
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123 { |
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124 const EVP_PBE_CTL * const *pbe1 = (const EVP_PBE_CTL * const *) a, |
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125 * const *pbe2 = (const EVP_PBE_CTL * const *)b; |
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126 return ((*pbe1)->pbe_nid - (*pbe2)->pbe_nid); |
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127 } |
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128 |
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129 /* Add a PBE algorithm */ |
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130 |
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131 EXPORT_C int EVP_PBE_alg_add(int nid, const EVP_CIPHER *cipher, const EVP_MD *md, |
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132 EVP_PBE_KEYGEN *keygen) |
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133 { |
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134 EVP_PBE_CTL *pbe_tmp; |
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135 if (!pbe_algs) pbe_algs = sk_new(pbe_cmp); |
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136 if (!(pbe_tmp = (EVP_PBE_CTL*) OPENSSL_malloc (sizeof(EVP_PBE_CTL)))) { |
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137 EVPerr(EVP_F_EVP_PBE_ALG_ADD,ERR_R_MALLOC_FAILURE); |
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138 return 0; |
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139 } |
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140 pbe_tmp->pbe_nid = nid; |
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141 pbe_tmp->cipher = cipher; |
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142 pbe_tmp->md = md; |
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143 pbe_tmp->keygen = keygen; |
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144 sk_push (pbe_algs, (char *)pbe_tmp); |
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145 return 1; |
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146 } |
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147 |
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148 EXPORT_C void EVP_PBE_cleanup(void) |
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149 { |
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150 sk_pop_free(pbe_algs, OPENSSL_freeFunc); |
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151 pbe_algs = NULL; |
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152 } |