int
rasqal_digest_buffer(rasqal_digest_type type, const unsigned char *output,
const unsigned char * const input, size_t len)
{
hashid hash_type;
unsigned int output_len;
MHASH m;
if(type > RASQAL_DIGEST_LAST)
return -1;
hash_type = rasqal_digest_to_hashid[type];
if(hash_type == (hashid)-1)
return -1;
output_len = mhash_get_block_size(hash_type);
if(!input)
return output_len;
m = mhash_init(hash_type);
if(m == MHASH_FAILED)
return -1;
mhash(m, (const void *)input, len);
mhash_deinit(m, (void*)output);
return output_len;
}
void hash_given_data( void* data, size_t data_size) {
MHASH td;
byte _res[20];
int i;
td = mhash_init( MHASH_SHA1);
if (td==MHASH_FAILED) {
err_quit(_("mhash_init() failed."));
}
/* also hash the pool
*/
mhash( td, rnd_pool, 20);
mhash(td, data, data_size);
mhash_deinit( td, _res);
/* addition may do as well as xor
*/
for(i=0;i<20;i++) rnd_pool[i] ^= _res[i];
/* Step 1 was completed. The pool was updated.
*/
}
void checksum_block(char *buf, int len, unsigned char *digest)
{
td = mhash_init(HASH_FUNC);
if (td == MHASH_FAILED)
abort();
mhash(td, buf, len);
mhash_deinit(td, digest);
}
/*
* *******************************************
* Function: get_crc
*
* Description: gets the crc of a packet
*
* Parameters :
* buffer - link layer buffer
* len - length of buffer
*
* *******************************************
*/
uint32_t get_crc(void *buffer , int len)
{
MHASH td;
uint32_t crc;
td = mhash_init(MHASH_CRC32);
mhash(td,buffer,len);
mhash_deinit(td,&crc);
return crc;
}
char * compute_hash(FILE* file)
{
MHASH td;
unsigned char buffer;
unsigned char hash[16];
td = mhash_init (MHASH_MD5);
while (fread (&buffer, 1, 1, file) == 1)
{
mhash (td, &buffer, 1);
}
mhash_deinit (td, hash);
return hash;
}
int sha1passwdok(const char *pw) {
unsigned char out[mhash_get_block_size(MHASH_SHA1)];
char outstr[mhash_get_block_size(MHASH_SHA1)*2+1];
int i;
MHASH td;
td=mhash_init(MHASH_SHA1);
mhash(td, pw, strlen(pw));
mhash_deinit(td, out);
for (i=0; i<mhash_get_block_size(MHASH_SHA1); i++) {
outstr[2*i]=hex[out[i] >> 4];
outstr[2*i+1]=hex[out[i] & 0xf];
}
outstr[2*i]=0;
return (memcmp(outstr,passwd,mhash_get_block_size(MHASH_SHA1))==0);
}
bool gtkhash_hash_lib_mhash_is_supported(const enum hash_func_e id)
{
struct hash_lib_mhash_s data;
if (!gtkhash_hash_lib_mhash_set_type(id, &data.type))
return false;
if (G_UNLIKELY((data.thread = mhash_init(data.type)) == MHASH_FAILED)) {
g_warning("mhash_init failed (%d)", id);
return false;
}
mhash_deinit(data.thread, NULL);
return true;
}
int ddfs_calculate_hash(char * dst, char * src, int len) {
//memcpy(dst, src, DDFS_HASH_LEN);
//return 0;
/*
md5_state_t state;
md5_init(&state);
md5_append(&state, src , len);
md5_finish(&state, dst);
*/
MHASH td = mhash_init(MHASH_TIGER);
mhash(td, src, len);
mhash_deinit(td, dst);
return 0;
}
static int MD4BlockChecksum( void *buffer, int length )
{
MHASH mh;
int digest[ 4 ], checksum;
/* make md4 hash */
mh = mhash_init( MHASH_MD4 );
if( !mh )
Error( "Unable to initialize MD4 hash context" );
mhash( mh, buffer, length );
mhash_deinit( mh, digest );
/* xor the bits and return */
checksum = digest[ 0 ] ^ digest[ 1 ] ^ digest[ 2 ] ^ digest[ 3 ];
return checksum;
}
WIN32DLL_DEFINE
void *mhash_end_m(MHASH td, void *(*hash_malloc) (mutils_word32))
{
void *digest;
mutils_word32 size;
size = mhash_get_block_size( td->algorithm_given);
digest = mutils_malloc(size);
if (digest==NULL)
{
return NULL;
}
mhash_deinit( td, digest);
return(digest);
}
static const char *
vmod_hash_sha256(const struct vrt_ctx *ctx, const char *msg)
{
MHASH td;
hashid hash = MHASH_SHA256;
unsigned char h[mhash_get_block_size(hash)];
int i;
char *p;
char *ptmp;
td = mhash_init(hash);
mhash(td, msg, strlen(msg));
mhash_deinit(td, h);
p = WS_Alloc(ctx->ws,mhash_get_block_size(hash)*2 + 1);
ptmp = p;
for (i = 0; i<mhash_get_block_size(hash);i++) {
sprintf(ptmp,"%.2x",h[i]);
ptmp+=2;
}
return p;
}
std::string
MD5::md5_file(const std::string& filename)
{
unsigned char hash[16]; /* enough size for MD5 */
MHASH td = mhash_init(MHASH_MD5);
if (td == MHASH_FAILED)
{
throw std::runtime_error("Failed to init MHash");
}
else
{
const unsigned int buf_size = 32768;
char buf[buf_size];
std::ifstream in(filename.c_str(), std::ios::in | std::ios::binary);
if (!in)
{
throw std::runtime_error("MD5::md5_file(): Couldn't open file " + filename);
}
else
{
while(!in.eof())
{
in.read(buf, buf_size);
mhash(td, buf, in.gcount());
}
in.close();
mhash_deinit(td, hash);
// Convert to string representation
std::ostringstream out;
for (int i = 0; i < 16; i++)
out << std::setfill('0') << std::setw(2) << std::hex << int(hash[i]);
return out.str();
}
}
}
std::string
MD5::md5_string(const std::string& str)
{
unsigned char hash[16]; /* enough size for MD5 */
MHASH td = mhash_init(MHASH_MD5);
if (td == MHASH_FAILED)
{
throw std::runtime_error("MD5::md5_string(): Failed to init MHash");
}
else
{
mhash(td, str.c_str(), str.length());
mhash_deinit(td, hash);
// Convert to string representation
std::ostringstream out;
for (int i = 0; i < 16; i++)
out << std::setfill('0') << std::setw(2) << std::hex << int(hash[i]);
return out.str();
}
}
char * map_calculate_hash(struct map * map)
{
char * rv;
rv = NULL;
assert(map != NULL);
unsigned char * hash;
int hash_size;
hash = NULL;
hash_size = 0;
#if HAVE_LIBMHASH
hash_size = mhash_get_block_size(MHASH_MD5);
hash = malloc(hash_size);
assert(hash != NULL);
if(hash != NULL)
{
MHASH td;
td = mhash_init(MHASH_MD5);
if(td != MHASH_FAILED)
{ /* Hash together all the relevant data. */
mhash(td, map->cave_name, strlen(map->cave_name) );
mhash(td, &map->level, sizeof map->level );
mhash(td, &map->is_intermission, sizeof map->is_intermission);
mhash(td, &map->width, sizeof map->width );
mhash(td, &map->height, sizeof map->height );
mhash(td, &map->start_x, sizeof map->start_x );
mhash(td, &map->start_y, sizeof map->start_y );
mhash(td, &map->exit_x, sizeof map->exit_x );
mhash(td, &map->exit_y, sizeof map->exit_y );
mhash(td, &map->diamonds, sizeof map->diamonds );
mhash(td, &map->diamonds_needed, sizeof map->diamonds_needed);
mhash(td, &map->diamond_score, sizeof map->diamond_score );
mhash(td, &map->time_score, sizeof map->time_score );
mhash(td, map->data, map->width * map->height );
mhash(td, &map->time, sizeof map->time );
mhash(td, &map->ameba_time, sizeof map->ameba_time );
mhash(td, &map->game_speed, sizeof map->game_speed );
mhash_deinit(td, hash);
}
else
{
free(hash);
hash = NULL;
}
}
#elif HAVE_LIBCRYPTO
MD5_CTX context;
hash_size = MD5_DIGEST_LENGTH;
hash = malloc(hash_size);
assert(hash != NULL);
if(hash != NULL)
{
if(MD5_Init(&context))
{
int success;
success = MD5_Update(&context, map->cave_name, strlen(map->cave_name) );
if(success) success = MD5_Update(&context, &map->level, sizeof map->level );
if(success) success = MD5_Update(&context, &map->is_intermission, sizeof map->is_intermission);
if(success) success = MD5_Update(&context, &map->width, sizeof map->width );
if(success) success = MD5_Update(&context, &map->height, sizeof map->height );
if(success) success = MD5_Update(&context, &map->start_x, sizeof map->start_x );
if(success) success = MD5_Update(&context, &map->start_y, sizeof map->start_y );
if(success) success = MD5_Update(&context, &map->exit_x, sizeof map->exit_x );
if(success) success = MD5_Update(&context, &map->exit_y, sizeof map->exit_y );
if(success) success = MD5_Update(&context, &map->diamonds, sizeof map->diamonds );
if(success) success = MD5_Update(&context, &map->diamonds_needed, sizeof map->diamonds_needed);
if(success) success = MD5_Update(&context, &map->diamond_score, sizeof map->diamond_score );
if(success) success = MD5_Update(&context, &map->time_score, sizeof map->time_score );
if(success) success = MD5_Update(&context, map->data, map->width * map->height );
if(success) success = MD5_Update(&context, &map->time, sizeof map->time );
if(success) success = MD5_Update(&context, &map->ameba_time, sizeof map->ameba_time );
if(success) success = MD5_Update(&context, &map->game_speed, sizeof map->game_speed );
if(success) success = MD5_Final(hash, &context);
if(!success)
{
free(hash);
hash = NULL;
}
}
else
{
free(hash);
hash = NULL;
}
}
#endif
if(hash != NULL)
{
rv = malloc(hash_size * 2 + 1);
assert(rv != NULL);
if(rv != NULL)
for(int i = 0; i < hash_size; i++)
sprintf(rv + i * 2, "%.2x", hash[i]);
free(hash);
}
return rv;
}
void finish_running_checksum(struct running_checksum *c, unsigned char *digest)
{
mhash_deinit(c->td, digest);
free(c);
}
static ngx_int_t ngx_http_secure_download_check_hash(ngx_http_request_t *r, ngx_http_secure_download_split_uri_t *sdsu, ngx_str_t *secret)
{
int i;
unsigned char generated_hash[16];
char hash[33];
MHASH td;
char *hash_data, *str;
int data_len;
static const char xtoc[] = "0123456789abcdef";
/* rel_path_to_hash/secret/timestamp\0 */
data_len = sdsu->path_to_hash_len + secret->len + 10;
hash_data = malloc(data_len + 1);
if (hash_data == NULL)
{
ngx_log_debug(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "securedownload: error in allocating memory for string_to_hash.data", 0);
return NGX_ERROR;
}
str = hash_data;
memcpy(str, sdsu->path, sdsu->path_to_hash_len);
str += sdsu->path_to_hash_len;
*str++ = '/';
memcpy(str, secret->data, secret->len);
str += secret->len;
*str++ = '/';
memcpy(str, sdsu->timestamp, 8);
str[8] = 0;
td = mhash_init(MHASH_MD5);
if (td == MHASH_FAILED)
{
free(hash_data);
return NGX_ERROR;
}
ngx_log_debug(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "securedownload: hashing string \"%s\" with len %i", hash_data, data_len);
mhash(td, hash_data, data_len);
mhash_deinit(td, generated_hash);
free(hash_data);
for (i = 0; i < 16; ++i) {
hash[2 * i + 0] = xtoc[generated_hash[i] >> 4];
hash[2 * i + 1] = xtoc[generated_hash[i] & 0xf];
}
hash[32] = 0; //because %.32 doesn't work
ngx_log_debug(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "securedownload: computed hash: %32s", hash);
// ngx_log_debug(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "hash from uri: %.32s", sdsu->md5);
if(memcmp(hash, sdsu->md5, 32) != 0) {
ngx_log_debug(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "securedownload: hash mismatch", 0);
return NGX_ERROR;
}
return NGX_OK;
}
int main (int argc, char **argv)
{
// establish necessary variables here
int sockfd, n; // socket and received buffer length
if (argc != 4)
{
printf ("Incorrect Arguments!\n");
printf ("usage: client <host> <port> <filename>\n");
exit (1);
}
if ((sockfd = socket (AF_INET, SOCK_STREAM, 0)) == -1)
{
printf ("Error creating socket\n");
exit (1);
}
// to convert host name (returns original IP or hostname converted to IP)
char *host = hostname_to_ip (argv[1]);
// set up all the network stuff
struct sockaddr_in servaddr, cliaddr;
bzero (&servaddr, sizeof (servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = inet_addr (host);
servaddr.sin_port = htons (atoi (argv[2]));
if (connect (sockfd, (struct sockaddr *) &servaddr, sizeof (servaddr)) ==
-1)
{
printf ("Error creating a connection with the server\n");
exit (1);
}
/* send the message to the server */
short int length = htons (strlen (argv[3]));
n = write (sockfd, &length, sizeof (length));
n = write (sockfd, argv[3], strlen (argv[3]));
int file_size;
n = read (sockfd, &file_size, sizeof (file_size));
if (n < 0)
error ("ERROR reading from socket");
file_size = ntohl (file_size);
//printf("Response read from the server: %d\n", file_size);
if (file_size == 0)
{
printf ("File does not exist on the server\n");
exit (1);
}
unsigned char server_hash[16];
n = read (sockfd, &server_hash, sizeof (server_hash));
if (n < 0)
error ("ERROR reading from socket");
int i;
/*
printf ("Server Hash: ");
for (i = 0; i < mhash_get_block_size (MHASH_MD5); i++)
{
printf ("%.2x", server_hash[i]);
}
printf ("\n");
*/
FILE *file;
file = fopen (argv[3], "w+");
if (file == NULL)
{
printf ("Could not open file\n");
exit (1);
}
char output[BUF_LEN];
bzero (output, BUF_LEN);
int downloaded = 0;
int buffer_size;
struct timeval start;
struct timeval finish;
gettimeofday(&start,NULL);
while (downloaded < file_size)
{
if ((file_size-downloaded)>=BUF_LEN)
{
buffer_size=BUF_LEN;
}else{
buffer_size=(file_size-downloaded);
}
n = read (sockfd, output, buffer_size);
fwrite (output, sizeof (char), buffer_size, file);
bzero (output, buffer_size);
downloaded += buffer_size;
}
gettimeofday(&finish,NULL);
long microsecs_elapsed = ((finish.tv_sec - start.tv_sec)*1000000L
+finish.tv_usec) - start.tv_usec;
float time_elapsed = (float)microsecs_elapsed/1000000;
rewind (file);
MHASH td;
unsigned char buffer;
unsigned char client_hash[16];
td = mhash_init (MHASH_MD5);
while (fread (&buffer, 1, 1, file) == 1)
{
mhash (td, &buffer, 1);
}
mhash_deinit (td, client_hash);
/*
printf ("Client Hash: ");
for (i = 0; i < mhash_get_block_size (MHASH_MD5); i++)
{
printf ("%.2x", client_hash[i]);
}
printf ("\n");
*/
fclose (file);
if (compare_hash (server_hash, client_hash) == 0)
{
printf ("File transfer was unsuccessful\n");
remove (argv[3]);
exit (1);
}
printf("%d bytes transferred in %.6f seconds: %.6f MB/sec\n",file_size,time_elapsed,
(float)(file_size/1048576)/time_elapsed);
printf("File MD5sum: ");
for (i = 0; i < mhash_get_block_size (MHASH_MD5); i++)
{
printf ("%.2x", client_hash[i]);
}
printf ("\n");
close (sockfd);
return 0;
}
//Main function:
int main(int argc, char**argv){
//loop to receive multiple messages:
while(1){
//Necessary data elements
int mysock;
int sr;
int numBytes;
int accepted = 1;
struct addrinfo hints;
struct addrinfo *res;
char * port;
struct sockaddr_storage their_address;
socklen_t address_length;
char buf[BUFFER_LEN];
char s[50];
//Get the port. Default is 9499
if(argc == 2){
port = argv[1];
}
else{
port = "9499";
}
//Set the addrinfo as empty before starting
memset(&hints,0,sizeof(hints));
hints.ai_family = AF_UNSPEC; //IP Agnostic
hints.ai_socktype = SOCK_STREAM; //TCP
hints.ai_flags = AI_PASSIVE; //Use my IP address
sr = getaddrinfo(NULL,port,&hints,&res); //Get address information, and set the port as the first argument
if(sr != 0){
printf("ERROR: COULD NOT GET ADDRESS INFORMATION!\n");
//exit(1);
}
//make the socket
mysock = socket(res->ai_family, res->ai_socktype,res->ai_protocol);
if(mysock==-1){
printf("ERROR: SOCKET COULD NOT BE MADE.\n");
//exit(1);
}
//bind
bind(mysock, res->ai_addr, res->ai_addrlen);
//Listen to anything we can:
listen(mysock,1);
//Accept someone:
address_length = sizeof their_address;
sr = accept(mysock,(struct sockaddr*) &their_address, &address_length);
struct sockaddr *info = (struct sockaddr*) &their_address;
struct sockaddr_in * info_in = (struct sockaddr_in *) info;
//While accepted, keep interacting with that client:
while(accepted){
memset(buf,0,sizeof(buf));
while(read(sr,buf,sizeof(buf))==-1); //get the command
if(!strcmp(buf,"get")){
short fileNameLen; //Length of filename, as 16 bit int
int size; //Size of file, as 32 bit int
char * fileName = malloc(sizeof(char)*100); //FileName c string
memset(fileName,0,sizeof(fileName));
//Read in the length of the filename and the filename
read(sr,&fileNameLen,sizeof(fileNameLen));
fileNameLen = ntohs(fileNameLen);
read(sr,fileName,fileNameLen+1);
//Compute the size of the file:
FILE *fp;
if(fp = fopen(fileName,"r")){
struct stat st;
stat(fileName, &st);
size = st.st_size;
fclose(fp);
} else{
size = -1;
}
//Send the size of the file
size = htonl(size);
write(sr,&size,sizeof(size));
size = ntohl(size);
//If the file exists:
if(size != -1){
//Calculate the MD5 Hash here:
MHASH hash;
hash = mhash_init(MHASH_MD5);
char hashValue[16];
char buffer;
fp = fopen(fileName,"r");
while(fread(&buffer,1,1,fp)){
mhash(hash,&buffer,1);
}
mhash_deinit(hash,hashValue);
fclose(fp);
//SEND HASH HERE.
write(sr,hashValue,16);
//Send the file:
char fileBuffer[101];
int sent = 0;
fp = fopen(fileName,"r");
while(sent < size){
size_t bytes_read;
memset(fileBuffer,0,sizeof(fileBuffer));
bytes_read = fread(fileBuffer,1,sizeof(char)*100,fp);
sent+= (int) bytes_read;
write(sr,&sent,sizeof(sent));
write(sr,fileBuffer,100);
}
fclose(fp);
}
} else if(!strcmp(buf,"put")){
//Get the length of the file name, followed by the file name
short fileNameLen;
int timeElapsed;
FILE * saveFile;
int si=0;
char * fileName = malloc(sizeof(char)*100);
memset(fileName,0,sizeof(fileName));
//Read in the file name length, the file name, and the size of the file.
read(sr,&fileNameLen,sizeof(fileNameLen));
fileNameLen = ntohs(fileNameLen);
read(sr,fileName,100);
read(sr,&si,sizeof(si));
si = ntohl(si);
//If the file exists:
if(si!=-1){
char fileBuffer[100]; //C String to read each packet
int received = 0; //Number of bytes received so far
saveFile = fopen(fileName,"w"); //Open file for writing.
//While we have not received all of the bytes, continue getting data.
while(received < si){
int nread; //Number of bytes read
read(sr,&nread,sizeof(nread));
received = nread;
read(sr,fileBuffer,100);
fputs(fileBuffer,saveFile); //Save each buffer to the file.
}
fclose(saveFile);
//Compute the MD5 Hash:
MHASH hash;
hash = mhash_init(MHASH_MD5);
char hashValue[16];
char buffer;
saveFile = fopen(fileName,"r");
while(fread(&buffer,1,1,saveFile)){
mhash(hash,&buffer,1);
}
mhash_deinit(hash,hashValue);
fclose(saveFile);
//Send the MD5 Hash:
write(sr,hashValue,16);
}
} else if(!strcmp(buf,"dir")){ //Working directory command
int num = 0; int i; int len = 100;
char *files = malloc(sizeof(char)*len);
char fileNames[NUM][len];
FILE *fp = popen("ls *","r");
while(fgets(files,len,fp) != NULL){
strcpy(fileNames[num],files);
num++;
}
pclose(fp);
num = htonl(num);
write(sr,&num,sizeof(num));
num = ntohl(num);
for(i = 0; i<num ;i++){
files = fileNames[i];
write(sr,files,len);
}
} else if(!strcmp(buf,"xit")){ //Working Exit Command
accepted = 0;
}
}
//close the socket
close(mysock);
}
}
WIN32DLL_DEFINE
mutils_error mhash_hmac_deinit(MHASH td, void *result)
{
mutils_word8 *opad;
mutils_word8 _opad[MAX_BLOCK_SIZE];
MHASH tmptd;
mutils_word32 i;
mutils_word32 opad_alloc = 0;
if (td->hmac_block > MAX_BLOCK_SIZE)
{
opad = mutils_malloc(td->hmac_block);
if (opad == NULL)
{
return(-MUTILS_SYSTEM_RESOURCE_ERROR);
}
opad_alloc = 1;
}
else
{
opad = _opad;
}
for (i = 0; i < td->hmac_key_size; i++)
{
opad[i] = (0x5C) ^ td->hmac_key[i];
}
for (; i < td->hmac_block; i++)
{
opad[i] = (0x5C);
}
tmptd = mhash_init(td->algorithm_given);
mhash(tmptd, opad, td->hmac_block);
if (td->final_func != NULL)
{
td->final_func(td->state);
}
if (td->deinit_func != NULL)
{
td->deinit_func(td->state, result);
}
if (result != NULL)
{
mhash(tmptd, result,
mhash_get_block_size(td->algorithm_given));
}
mutils_free(td->state);
if (opad_alloc!=0)
{
mutils_free(opad);
}
mutils_bzero(td->hmac_key, td->hmac_key_size);
mutils_free(td->hmac_key);
mutils_free(td);
mhash_deinit(tmptd, result);
return(MUTILS_OK);
}
int frag_test(hashid hashid)
{
unsigned char digest1[MAX_DIGEST_SIZE]; /* enough space to hold digests */
unsigned char digest2[MAX_DIGEST_SIZE];
unsigned char buf1[MAX_INPUT_SIZE + 1];
unsigned char buf2[MAX_INPUT_SIZE];
MHASH td1, td2;
size_t input_size, digest_size;
int i, offs, left;
unsigned char val = 0;
input_size = mhash_get_hash_pblock(hashid);
assert(input_size <= MAX_INPUT_SIZE);
digest_size = mhash_get_block_size(hashid);
assert(digest_size <= MAX_DIGEST_SIZE);
td1 = mhash_init(hashid); /* get two mhash instances */
td2 = mhash_init(hashid);
for(i = offs = 0; i < 2 * input_size; i++, val++) /* first part */
{
memset(buf1, val, input_size + 1); /* the first instance gets framgments */
mhash(td1, buf1, input_size + 1); /* of size (input_size+1) */
left = input_size - offs; /* the second instance gets fragments */
memset(buf2 + offs, val, left); /* of size input_size */
mhash(td2, buf2, input_size);
offs = (input_size + 1) - left;
memset(buf2, val, offs);
if (offs == input_size)
{
mhash(td2, buf2, input_size);
offs = 0;
}
}
mhash(td2, buf2, offs);
for(i = offs = 0; i < 2 * input_size; i++, val++) /* second part */
{
memset(buf1, val, input_size - 1); /* the first instance gets framgments */
mhash(td1, buf1, input_size - 1); /* of size (input_size-1) */
if (offs == 0) /* the second instance gets fragments */
{ /* of size input_size */
offs = input_size - 1;
memset(buf2, val, offs);
}
else
{
left = input_size - offs;
memset(buf2 + offs, val, left);
mhash(td2, buf2, input_size);
offs = (input_size - 1) - left;
memset(buf2, val, offs);
}
}
mhash(td2, buf2, offs);
mhash_deinit(td1, digest1); /* return 1 if the calculated hash values match */
mhash_deinit(td2, digest2);
return ! strncmp(digest1, digest2, digest_size);
}