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Instead, the application should load known keys in + the keys manager and use <dsig:KeyName/> element to specify + the key name. + </p> +<p> </p> +<div class="EXAMPLE"> +<a name="AEN391"></a><p><b>Example 3. Initializing keys manager and loading DES keys from binary files.</b></p> +<pre class="PROGRAMLISTING">/** + * load_des_keys: + * @files: the list of filenames. + * @files_size: the number of filenames in #files. + * + * Creates default keys manager and load DES keys from #files in it. + * The caller is responsible for destroing returned keys manager using + * @xmlSecKeysMngrDestroy. + * + * Returns the pointer to newly created keys manager or NULL if an error + * occurs. + */ +xmlSecKeysMngrPtr +load_des_keys(char** files, int files_size) { + xmlSecKeysMngrPtr mngr; + xmlSecKeyPtr key; + int i; + + assert(files); + assert(files_size > 0); + + /* create and initialize keys manager, we use a default list based + * keys manager, implement your own xmlSecKeysStore klass if you need + * something more sophisticated + */ + mngr = xmlSecKeysMngrCreate(); + if(mngr == NULL) { + fprintf(stderr, "Error: failed to create keys manager.\n"); + return(NULL); + } + if(xmlSecCryptoAppDefaultKeysMngrInit(mngr) < 0) { + fprintf(stderr, "Error: failed to initialize keys manager.\n"); + xmlSecKeysMngrDestroy(mngr); + return(NULL); + } + + for(i = 0; i < files_size; ++i) { + assert(files[i]); + + /* load DES key */ + key = xmlSecKeyReadBinaryFile(xmlSecKeyDataDesId, files[i]); + if(key == NULL) { + fprintf(stderr,"Error: failed to load des key from binary file \"%s\"\n", files[i]); + xmlSecKeysMngrDestroy(mngr); + return(NULL); + } + + /* set key name to the file name, this is just an example! */ + if(xmlSecKeySetName(key, BAD_CAST files[i]) < 0) { + fprintf(stderr,"Error: failed to set key name for key from \"%s\"\n", files[i]); + xmlSecKeyDestroy(key); + xmlSecKeysMngrDestroy(mngr); + return(NULL); + } + + /* add key to keys manager, from now on keys manager is responsible + * for destroying key + */ + if(xmlSecCryptoAppDefaultKeysMngrAdoptKey(mngr, key) < 0) { + fprintf(stderr,"Error: failed to add key from \"%s\" to keys manager\n", files[i]); + xmlSecKeyDestroy(key); + xmlSecKeysMngrDestroy(mngr); + return(NULL); + } + } + + return(mngr); +} + </pre> +<p><a href="xmlsec-decrypt-with-keys-mngr.html#XMLSEC-EXAMPLE-DECRYPT2">Full program listing</a></p> +</div> + </div> +<table class="navigation" width="100%" summary="Navigation footer" cellpadding="2" cellspacing="2"><tr valign="middle"> +<td align="left"><a accesskey="p" href="xmlsec-notes-keys-manager-sign-enc.html"><b><<< Using keys manager for signatures/encryption.</b></a></td> +<td align="right"><a accesskey="n" href="xmlsec-notes-custom-keys-store.html"><b>Implementing a custom keys store. >>></b></a></td> +</tr></table> +</td></tr></table></td> +</tr></table></body> +</html> |