src/gnutls/crypto.c

   1 /**
   2  * XMLSec library
   3  *
   4  * This is free software; see Copyright file in the source
   5  * distribution for preciese wording.
   6  *
   7  * Copyright (C) 2002-2003 Aleksey Sanin <aleksey@aleksey.com>
   8  */
   9 #include "globals.h"
  10
  11 #include <string.h>
  12
  13 #include <gnutls/gnutls.h>
  14 #include <gcrypt.h>
  15
  16 #include <xmlsec/xmlsec.h>
  17 #include <xmlsec/keys.h>
  18 #include <xmlsec/transforms.h>
  19 #include <xmlsec/errors.h>
  20 #include <xmlsec/dl.h>
  21 #include <xmlsec/private.h>
  22
  23 #include <xmlsec/gnutls/app.h>
  24 #include <xmlsec/gnutls/crypto.h>
  25
  26 static xmlSecCryptoDLFunctionsPtr gXmlSecGnuTLSFunctions = NULL;
  27
  28 /**
  29  * xmlSecCryptoGetFunctions_gnutls:
  30  *
  31  * Gets the pointer to xmlsec-gnutls functions table.
  32  *
  33  * Returns: the xmlsec-gnutls functions table or NULL if an error occurs.
  34  */
  35 xmlSecCryptoDLFunctionsPtr
  36 xmlSecCryptoGetFunctions_gnutls(void) {
  37     static xmlSecCryptoDLFunctions functions;
  38
  39     if(gXmlSecGnuTLSFunctions != NULL) {
  40         return(gXmlSecGnuTLSFunctions);
  41     }
  42
  43     memset(&functions, 0, sizeof(functions));
  44     gXmlSecGnuTLSFunctions = &functions;
  45
  46     /**
  47      * Crypto Init/shutdown
  48      */
  49     gXmlSecGnuTLSFunctions->cryptoInit                  = xmlSecGnuTLSInit;
  50     gXmlSecGnuTLSFunctions->cryptoShutdown              = xmlSecGnuTLSShutdown;
  51     gXmlSecGnuTLSFunctions->cryptoKeysMngrInit          = xmlSecGnuTLSKeysMngrInit;
  52
  53     /**
  54      * Key data ids
  55      */
  56 #ifndef XMLSEC_NO_AES
  57     gXmlSecGnuTLSFunctions->keyDataAesGetKlass          = xmlSecGnuTLSKeyDataAesGetKlass;
  58 #endif /* XMLSEC_NO_AES */
  59
  60 #ifndef XMLSEC_NO_DES
  61     gXmlSecGnuTLSFunctions->keyDataDesGetKlass          = xmlSecGnuTLSKeyDataDesGetKlass;
  62 #endif /* XMLSEC_NO_DES */
  63
  64 #ifndef XMLSEC_NO_HMAC
  65     gXmlSecGnuTLSFunctions->keyDataHmacGetKlass         = xmlSecGnuTLSKeyDataHmacGetKlass;
  66 #endif /* XMLSEC_NO_HMAC */
  67
  68     /**
  69      * Key data store ids
  70      */
  71
  72     /**
  73      * Crypto transforms ids
  74      */
  75 #ifndef XMLSEC_NO_AES
  76     gXmlSecGnuTLSFunctions->transformAes128CbcGetKlass          = xmlSecGnuTLSTransformAes128CbcGetKlass;
  77     gXmlSecGnuTLSFunctions->transformAes192CbcGetKlass          = xmlSecGnuTLSTransformAes192CbcGetKlass;
  78     gXmlSecGnuTLSFunctions->transformAes256CbcGetKlass          = xmlSecGnuTLSTransformAes256CbcGetKlass;
  79 #endif /* XMLSEC_NO_AES */
  80
  81 #ifndef XMLSEC_NO_DES
  82     gXmlSecGnuTLSFunctions->transformDes3CbcGetKlass            = xmlSecGnuTLSTransformDes3CbcGetKlass;
  83 #endif /* XMLSEC_NO_DES */
  84
  85 #ifndef XMLSEC_NO_HMAC
  86     gXmlSecGnuTLSFunctions->transformHmacSha1GetKlass           = xmlSecGnuTLSTransformHmacSha1GetKlass;
  87     gXmlSecGnuTLSFunctions->transformHmacRipemd160GetKlass      = xmlSecGnuTLSTransformHmacRipemd160GetKlass;
  88     gXmlSecGnuTLSFunctions->transformHmacMd5GetKlass            = xmlSecGnuTLSTransformHmacMd5GetKlass;
  89 #endif /* XMLSEC_NO_HMAC */
  90
  91 #ifndef XMLSEC_NO_SHA1
  92     gXmlSecGnuTLSFunctions->transformSha1GetKlass               = xmlSecGnuTLSTransformSha1GetKlass;
  93 #endif /* XMLSEC_NO_SHA1 */
  94
  95     /**
  96      * High level routines form xmlsec command line utility
  97      */
  98     gXmlSecGnuTLSFunctions->cryptoAppInit                       = xmlSecGnuTLSAppInit;
  99     gXmlSecGnuTLSFunctions->cryptoAppShutdown                   = xmlSecGnuTLSAppShutdown;
 100     gXmlSecGnuTLSFunctions->cryptoAppDefaultKeysMngrInit        = xmlSecGnuTLSAppDefaultKeysMngrInit;
 101     gXmlSecGnuTLSFunctions->cryptoAppDefaultKeysMngrAdoptKey    = xmlSecGnuTLSAppDefaultKeysMngrAdoptKey;
 102     gXmlSecGnuTLSFunctions->cryptoAppDefaultKeysMngrLoad        = xmlSecGnuTLSAppDefaultKeysMngrLoad;
 103     gXmlSecGnuTLSFunctions->cryptoAppDefaultKeysMngrSave        = xmlSecGnuTLSAppDefaultKeysMngrSave;
 104 #ifndef XMLSEC_NO_X509
 105     gXmlSecGnuTLSFunctions->cryptoAppKeysMngrCertLoad           = xmlSecGnuTLSAppKeysMngrCertLoad;
 106     gXmlSecGnuTLSFunctions->cryptoAppPkcs12Load                 = xmlSecGnuTLSAppPkcs12Load;
 107     gXmlSecGnuTLSFunctions->cryptoAppKeyCertLoad                = xmlSecGnuTLSAppKeyCertLoad;
 108 #endif /* XMLSEC_NO_X509 */
 109     gXmlSecGnuTLSFunctions->cryptoAppKeyLoad                    = xmlSecGnuTLSAppKeyLoad;
 110     gXmlSecGnuTLSFunctions->cryptoAppDefaultPwdCallback         = (void*)xmlSecGnuTLSAppGetDefaultPwdCallback();
 111
 112     return(gXmlSecGnuTLSFunctions);
 113 }
 114
 115
 116 /**
 117  * xmlSecGnuTLSInit:
 118  *
 119  * XMLSec library specific crypto engine initialization.
 120  *
 121  * Returns: 0 on success or a negative value otherwise.
 122  */
 123 int
 124 xmlSecGnuTLSInit (void)  {
 125     /* Check loaded xmlsec library version */
 126     if(xmlSecCheckVersionExact() != 1) {
 127         xmlSecError(XMLSEC_ERRORS_HERE,
 128                     NULL,
 129                     "xmlSecCheckVersionExact",
 130                     XMLSEC_ERRORS_R_XMLSEC_FAILED,
 131                     XMLSEC_ERRORS_NO_MESSAGE);
 132         return(-1);
 133     }
 134
 135     /* register our klasses */
 136     if(xmlSecCryptoDLFunctionsRegisterKeyDataAndTransforms(xmlSecCryptoGetFunctions_gnutls()) < 0) {
 137         xmlSecError(XMLSEC_ERRORS_HERE,
 138                     NULL,
 139                     "xmlSecCryptoDLFunctionsRegisterKeyDataAndTransforms",
 140                     XMLSEC_ERRORS_R_XMLSEC_FAILED,
 141                     XMLSEC_ERRORS_NO_MESSAGE);
 142         return(-1);
 143     }
 144
 145     return(0);
 146 }
 147
 148 /**
 149  * xmlSecGnuTLSShutdown:
 150  *
 151  * XMLSec library specific crypto engine shutdown.
 152  *
 153  * Returns: 0 on success or a negative value otherwise.
 154  */
 155 int
 156 xmlSecGnuTLSShutdown(void) {
 157     return(0);
 158 }
 159
 160 /**
 161  * xmlSecGnuTLSKeysMngrInit:
 162  * @mngr:               the pointer to keys manager.
 163  *
 164  * Adds GnuTLS specific key data stores in keys manager.
 165  *
 166  * Returns: 0 on success or a negative value otherwise.
 167  */
 168 int
 169 xmlSecGnuTLSKeysMngrInit(xmlSecKeysMngrPtr mngr) {
 170     xmlSecAssert2(mngr != NULL, -1);
 171
 172     /* TODO: add key data stores */
 173     return(0);
 174 }
 175
 176 /**
 177  * xmlSecGnuTLSGenerateRandom:
 178  * @buffer:             the destination buffer.
 179  * @size:               the numer of bytes to generate.
 180  *
 181  * Generates @size random bytes and puts result in @buffer.
 182  *
 183  * Returns: 0 on success or a negative value otherwise.
 184  */
 185 int
 186 xmlSecGnuTLSGenerateRandom(xmlSecBufferPtr buffer, xmlSecSize size) {
 187     int ret;
 188
 189     xmlSecAssert2(buffer != NULL, -1);
 190     xmlSecAssert2(size > 0, -1);
 191
 192     ret = xmlSecBufferSetSize(buffer, size);
 193     if(ret < 0) {
 194         xmlSecError(XMLSEC_ERRORS_HERE,
 195                     NULL,
 196                     "xmlSecBufferSetSize",
 197                     XMLSEC_ERRORS_R_XMLSEC_FAILED,
 198                     "size=%d", size);
 199         return(-1);
 200     }
 201
 202     /* get random data */
 203     gcry_randomize(xmlSecBufferGetData(buffer), size, GCRY_STRONG_RANDOM);
 204     return(0);
 205 }