#include "all.h"#include <stdio.h>#include <stdlib.h>#include "util.h"#include "globalvars.h"intcheckMKEncMagic(){	u_int8_t* emagicCurrent;	u_int8_t* emagicStored;	AES_KEY ik;	xmlNodePtr root;	xmlNodePtr emagicNode;	xmlChar* emagicStoredText;	xmlChar* emagicCurrentText;	int ret = -1;		/* Encrypt magic string with current master key */	emagicCurrent = (u_int8_t*) malloc(128/8);	AES_set_encrypt_key(authdata, 128, &ik);	AES_ecb_encrypt(MAGIC_STRING, emagicCurrent, &ik, AES_ENCRYPT);		/* Find encmagic element in cryptotab */	root = xmlDocGetRootElement(ctab);	for (emagicNode = root->xmlChildrenNode;			 NULL != emagicNode; emagicNode = emagicNode->next)	{		if (0 == xmlStrcmp(emagicNode->name, "encmagic"))			break;	}	if (NULL != emagicNode)	{		/* encmagic was found - compare it with current, computed value */		emagicStoredText = xmlNodeListGetString(ctab,											 emagicNode->xmlChildrenNode, 1);		cleanWhiteSpace((char**) (&emagicStoredText));		emagicStored = (u_int8_t*) malloc(128/8);		hex2byte(&emagicStored, emagicStoredText, 128/8);		xmlFree(emagicStoredText);		if (0 != memcmp(emagicCurrent, emagicStored, 128/8))		{			/* encmagic mismatch! */			printf("Encmagic stored in cryptotab and value computed from master key are not equal.\n");			ret = -1;		}		else			ret = 1;		free(emagicStored);	}	else	{		/* encmagic not found - we need to create one and inform user */		byte2hex((char**) (&emagicCurrentText), emagicCurrent, 128/8);		emagicNode = xmlNewTextChild(root, NULL, "encmagic",																 emagicCurrentText);		xmlFree(emagicCurrentText);		printf("Created encmagic. Type 'save' to update cryptotab.\n");		ret = 1;	}		free(emagicCurrent);	return ret;}