PyObject *xmlsec_TmplEncDataEnsureKeyInfo(PyObject *self, PyObject *args) { PyObject *encNode_obj; xmlNodePtr encNode; const xmlChar *id = NULL; xmlNodePtr keyInfoNode; if (CheckArgs(args, "Os:tmplEncDataEnsureKeyInfo")) { if (!PyArg_ParseTuple(args, "Oz:tmplEncDataEnsureKeyInfo", &encNode_obj, &id)) return NULL; } else return NULL; encNode = xmlNodePtr_get(encNode_obj); keyInfoNode = xmlSecTmplEncDataEnsureKeyInfo(encNode, id); return (wrap_xmlNodePtr(keyInfoNode)); }
/** * encrypt_file: * @xml_file: the encryption template file name. * @key_file: the Triple DES key file. * * Encrypts #xml_file using a dynamicaly created template and DES key from * #key_file. * * Returns 0 on success or a negative value if an error occurs. */ int encrypt_file(const char* xml_file, const char* key_file) { xmlDocPtr doc = NULL; xmlNodePtr encDataNode = NULL; xmlNodePtr keyInfoNode = NULL; xmlSecEncCtxPtr encCtx = NULL; int res = -1; assert(xml_file); assert(key_file); /* load template */ doc = xmlParseFile(xml_file); if ((doc == NULL) || (xmlDocGetRootElement(doc) == NULL)){ fprintf(stderr, "Error: unable to parse file \"%s\"\n", xml_file); goto done; } /* create encryption template to encrypt XML file and replace * its content with encryption result */ encDataNode = xmlSecTmplEncDataCreate(doc, xmlSecTransformDes3CbcId, NULL, xmlSecTypeEncElement, NULL, NULL); if(encDataNode == NULL) { fprintf(stderr, "Error: failed to create encryption template\n"); goto done; } /* we want to put encrypted data in the <enc:CipherValue/> node */ if(xmlSecTmplEncDataEnsureCipherValue(encDataNode) == NULL) { fprintf(stderr, "Error: failed to add CipherValue node\n"); goto done; } /* add <dsig:KeyInfo/> and <dsig:KeyName/> nodes to put key name in the signed document */ keyInfoNode = xmlSecTmplEncDataEnsureKeyInfo(encDataNode, NULL); if(keyInfoNode == NULL) { fprintf(stderr, "Error: failed to add key info\n"); goto done; } if(xmlSecTmplKeyInfoAddKeyName(keyInfoNode, NULL) == NULL) { fprintf(stderr, "Error: failed to add key name\n"); goto done; } /* create encryption context, we don't need keys manager in this example */ encCtx = xmlSecEncCtxCreate(NULL); if(encCtx == NULL) { fprintf(stderr,"Error: failed to create encryption context\n"); goto done; } /* load DES key, assuming that there is not password */ encCtx->encKey = xmlSecKeyReadBinaryFile(xmlSecKeyDataDesId, key_file); if(encCtx->encKey == NULL) { fprintf(stderr,"Error: failed to load des key from binary file \"%s\"\n", key_file); goto done; } /* set key name to the file name, this is just an example! */ if(xmlSecKeySetName(encCtx->encKey, key_file) < 0) { fprintf(stderr,"Error: failed to set key name for key from \"%s\"\n", key_file); goto done; } /* encrypt the data */ if(xmlSecEncCtxXmlEncrypt(encCtx, encDataNode, xmlDocGetRootElement(doc)) < 0) { fprintf(stderr,"Error: encryption failed\n"); goto done; } /* we template is inserted in the doc */ encDataNode = NULL; /* print encrypted data with document to stdout */ xmlDocDump(stdout, doc); /* success */ res = 0; done: /* cleanup */ if(encCtx != NULL) { xmlSecEncCtxDestroy(encCtx); } if(encDataNode != NULL) { xmlFreeNode(encDataNode); } if(doc != NULL) { xmlFreeDoc(doc); } return(res); }