Mercurial > trustbridge > nss-cmake-static
annotate nss/lib/pkcs7/p7local.h @ 4:b513267f632f tip
Build DBM module
author | Andre Heinecke <andre.heinecke@intevation.de> |
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date | Tue, 05 Aug 2014 18:58:03 +0200 |
parents | 1e5118fa0cb1 |
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rev | line source |
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1 /* This Source Code Form is subject to the terms of the Mozilla Public |
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2 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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4 |
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5 /* |
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6 * Support routines for PKCS7 implementation, none of which are exported. |
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7 * This file should only contain things that are needed by both the |
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8 * encoding/creation side *and* the decoding/decryption side. Anything |
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9 * else should just be static routines in the appropriate file. |
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10 * |
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11 * Do not export this file! If something in here is really needed outside |
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12 * of pkcs7 code, first try to add a PKCS7 interface which will do it for |
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13 * you. If that has a problem, then just move out what you need, changing |
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14 * its name as appropriate! |
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15 */ |
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16 |
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17 #ifndef _P7LOCAL_H_ |
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18 #define _P7LOCAL_H_ |
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19 |
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20 #include "secpkcs7.h" |
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21 #include "secasn1t.h" |
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22 |
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23 extern const SEC_ASN1Template sec_PKCS7ContentInfoTemplate[]; |
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24 |
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25 /* opaque objects */ |
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26 typedef struct sec_pkcs7_cipher_object sec_PKCS7CipherObject; |
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27 |
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28 |
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29 /************************************************************************/ |
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30 SEC_BEGIN_PROTOS |
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31 |
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32 /* |
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33 * Look through a set of attributes and find one that matches the |
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34 * specified object ID. If "only" is true, then make sure that |
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35 * there is not more than one attribute of the same type. Otherwise, |
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36 * just return the first one found. (XXX Does anybody really want |
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37 * that first-found behavior? It was like that when I found it...) |
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38 */ |
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39 extern SEC_PKCS7Attribute *sec_PKCS7FindAttribute (SEC_PKCS7Attribute **attrs, |
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40 SECOidTag oidtag, |
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41 PRBool only); |
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42 /* |
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43 * Return the single attribute value, doing some sanity checking first: |
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44 * - Multiple values are *not* expected. |
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45 * - Empty values are *not* expected. |
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46 */ |
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47 extern SECItem *sec_PKCS7AttributeValue (SEC_PKCS7Attribute *attr); |
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48 |
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49 /* |
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50 * Encode a set of attributes (found in "src"). |
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51 */ |
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52 extern SECItem *sec_PKCS7EncodeAttributes (PLArenaPool *poolp, |
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53 SECItem *dest, void *src); |
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54 |
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55 /* |
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56 * Make sure that the order of the attributes guarantees valid DER |
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57 * (which must be in lexigraphically ascending order for a SET OF); |
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58 * if reordering is necessary it will be done in place (in attrs). |
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59 */ |
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60 extern SECStatus sec_PKCS7ReorderAttributes (SEC_PKCS7Attribute **attrs); |
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61 |
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62 |
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63 /* |
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64 * Create a context for decrypting, based on the given key and algorithm. |
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65 */ |
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66 extern sec_PKCS7CipherObject * |
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67 sec_PKCS7CreateDecryptObject (PK11SymKey *key, SECAlgorithmID *algid); |
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68 |
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69 /* |
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70 * Create a context for encrypting, based on the given key and algorithm, |
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71 * and fill in the algorithm id. |
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72 */ |
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73 extern sec_PKCS7CipherObject * |
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74 sec_PKCS7CreateEncryptObject (PLArenaPool *poolp, PK11SymKey *key, |
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75 SECOidTag algtag, SECAlgorithmID *algid); |
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76 |
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77 /* |
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78 * Destroy the given decryption or encryption object. |
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79 */ |
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80 extern void sec_PKCS7DestroyDecryptObject (sec_PKCS7CipherObject *obj); |
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81 extern void sec_PKCS7DestroyEncryptObject (sec_PKCS7CipherObject *obj); |
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82 |
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83 /* |
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84 * What will be the output length of the next call to encrypt/decrypt? |
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85 * Result can be used to perform memory allocations. Note that the amount |
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86 * is exactly accurate only when not doing a block cipher or when final |
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87 * is false, otherwise it is an upper bound on the amount because until |
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88 * we see the data we do not know how many padding bytes there are |
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89 * (always between 1 and the cipher block size). |
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90 * |
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91 * Note that this can return zero, which does not mean that the cipher |
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92 * operation can be skipped! (It simply means that there are not enough |
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93 * bytes to make up an entire block; the bytes will be reserved until |
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94 * there are enough to encrypt/decrypt at least one block.) However, |
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95 * if zero is returned it *does* mean that no output buffer need be |
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96 * passed in to the subsequent cipher operation, as no output bytes |
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97 * will be stored. |
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98 */ |
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99 extern unsigned int sec_PKCS7DecryptLength (sec_PKCS7CipherObject *obj, |
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100 unsigned int input_len, |
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101 PRBool final); |
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102 extern unsigned int sec_PKCS7EncryptLength (sec_PKCS7CipherObject *obj, |
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103 unsigned int input_len, |
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104 PRBool final); |
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105 |
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106 /* |
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107 * Decrypt a given length of input buffer (starting at "input" and |
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108 * containing "input_len" bytes), placing the decrypted bytes in |
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109 * "output" and storing the output length in "*output_len_p". |
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110 * "obj" is the return value from sec_PKCS7CreateDecryptObject. |
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111 * When "final" is true, this is the last of the data to be decrypted. |
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112 */ |
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113 extern SECStatus sec_PKCS7Decrypt (sec_PKCS7CipherObject *obj, |
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114 unsigned char *output, |
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115 unsigned int *output_len_p, |
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116 unsigned int max_output_len, |
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117 const unsigned char *input, |
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118 unsigned int input_len, |
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119 PRBool final); |
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120 |
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121 /* |
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122 * Encrypt a given length of input buffer (starting at "input" and |
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123 * containing "input_len" bytes), placing the encrypted bytes in |
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124 * "output" and storing the output length in "*output_len_p". |
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125 * "obj" is the return value from sec_PKCS7CreateEncryptObject. |
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126 * When "final" is true, this is the last of the data to be encrypted. |
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127 */ |
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128 extern SECStatus sec_PKCS7Encrypt (sec_PKCS7CipherObject *obj, |
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129 unsigned char *output, |
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130 unsigned int *output_len_p, |
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131 unsigned int max_output_len, |
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132 const unsigned char *input, |
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133 unsigned int input_len, |
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134 PRBool final); |
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135 |
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136 /************************************************************************/ |
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137 SEC_END_PROTOS |
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138 |
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139 #endif /* _P7LOCAL_H_ */ |