// Chap-Password = id + md5(id|password|challenge)
func enChapPassword(password []byte, challenge []byte) []byte {
id := []byte{challenge[15]}
md5 := md5.New()
md5.Write(id[:])
md5.Write(password)
md5.Write(challenge)
return append(id[:], md5.Sum(nil)...)
}
func GenNameUUID(name string) string {
md5 := md5.New()
md5.Write([]byte(name))
md5Sum := md5.Sum(nil)
md5Sum[6] &= 0x0F
md5Sum[6] |= 0x30
md5Sum[8] &= 0x3F
md5Sum[8] |= 0x80
return hex.EncodeToString(md5Sum)
}
func enPapPassword(auth PktAuth, secret []byte, password []byte) []byte {
me := papPassword(password)
crypt := []byte(nil)
count := me.Count()
var b = make([][papBlockSize]byte, count)
var c = make([][papBlockSize]byte, count)
for i := 0; i < count; i++ {
md5 := md5.New()
md5.Write(secret)
md5.Write(auth)
copy(b[i][:], md5.Sum(nil))
xor(c[i][:], me.Block(i), b[i][:])
crypt = append(crypt, c[i][:]...)
}
return crypt
}
func genFileShas(filename string) (string, string, string, error) {
data, err := ioutil.ReadFile(filename)
if err != nil {
return "", "", "", fmt.Errorf("could not compute file '%s' checksum: %s", filename, err)
}
h := sha1.New()
h.Write([]byte(data))
sha1 := hex.EncodeToString(h.Sum(nil))
h256 := sha256.New()
h256.Write([]byte(data))
shaSum := h256.Sum(nil)
sha256base64 := base64.StdEncoding.EncodeToString(shaSum[:])
md5 := md5.New()
md5.Write([]byte(data))
md5Sum := hex.EncodeToString(md5.Sum(nil))
return sha1, sha256base64, md5Sum, nil
}
func bytesFromDir(dir, suffix string) ([]byte, []byte) {
var buf *bytes.Buffer = &bytes.Buffer{}
md5 := md5.New()
files, _ := ioutil.ReadDir(dir)
for _, f := range files {
if strings.HasSuffix(f.Name(), suffix) {
if b, err := ioutil.ReadFile(filepath.Join(dir, f.Name())); err != nil {
logger.Println(err)
logger.Printf("unable tor read file: %s, '%s', skipping", f.Name(), err)
} else {
buf.Write(b)
md5.Write(b)
}
}
}
return buf.Bytes(), md5.Sum(nil)
}
func Solve() {
md5 := md5.New()
key := "bgvyzdsv"
i := 1
for {
data := []byte(key + strconv.Itoa(i))
md5.Write(data)
hash := fmt.Sprintf("%x\n", md5.Sum(nil))
i++
md5.Reset()
if hash[0:5] == "00000" {
fmt.Println("Five zeroes", string(data), hash)
}
if hash[0:6] == "000000" {
fmt.Println("Six zeroes", string(data), hash)
return
}
}
}
func checksumProcessPath(directory string, name string, deleteMode bool, workingDirectory string) {
directory = fpath.Clean(directory)
baseFilename := fpath.Join(directory, name+".")
ffpFilename := baseFilename + "ffp"
md5Filename := baseFilename + "md5"
// If we're in delete mode, let's just delete the ffp and md5 files right away
if deleteMode {
removeFile(ffpFilename, true)
removeFile(md5Filename, true)
return
}
// Let's create an md5 file buffer and
// a pool to store files to be in the ffp
var md5Buffer bytes.Buffer
ffpPool := []string{
// The first arg for ffpPool is this
// because we're going to dump the entire
// pool in the command later
"--show-md5sum",
}
// This walks through every file in the folder
fpath.Walk(directory,
func(path string, info os.FileInfo, err error) error {
if err != nil {
fmt.Println("!!Encountered error for: " + path)
fmt.Println("!!This is the message: " + err.Error())
return nil
} else if info.IsDir() {
// We don't care about directories either,
// so let's jump out of here
return nil
}
if (path == ffpFilename) || (path == md5Filename) {
// ffpFilename is hashed afterwards
// and we don't need to hash ourself either
return nil
}
name := strings.TrimPrefix(
path,
directory+"\\",
)
if fpath.Ext(path) == ".flac" {
// So if the file we have is an ffp file,
// lets add it to the pool to be checked!
ffpPool = append(ffpPool, name)
}
// Read the file
data, err := ioutil.ReadFile(path)
if err != nil {
fmt.Println("!!Encountered error for: " + path)
fmt.Println("!!This is the message: " + err.Error())
}
md5Buffer.WriteString(checksumFormatMD5(md5.Sum(data), name))
return nil
},
)
// If the pool contains atleast one **filename**
// the first item in the pool is actually just a flag!
if len(ffpPool) > 1 {
cmd := exec.Command(fpath.Join(workingDirectory, "metaflac"), ffpPool[:]...)
cmd.Dir = directory
data, err := cmd.Output()
if err != nil {
fmt.Println("metaflac returned an invalid response")
if data != nil {
fmt.Println(data)
}
panic(err)
}
// The md5 buffer doesn't contain our ffp file, so let's write that to the buffer
md5Buffer.WriteString(checksumFormatMD5(md5.Sum(data), name+".ffp"))
// Let's write the ffp file now
ffp, err := os.Create(ffpFilename)
defer ffp.Close()
if err != nil {
fmt.Println("!!Could not create ffp file: " + ffpFilename)
fmt.Println("!!Error: " + err.Error())
} else {
ffp.Write(data)
}
}
// If the md5buffer isn't empty
if md5Buffer.Len() > 0 {
// Let's write the md5 file
md5, err := os.Create(md5Filename)
defer md5.Close()
if err != nil {
fmt.Println("!!Could not create md5 file: " + md5Filename)
fmt.Println("!!Error: " + err.Error())
} else {
md5.Write(md5Buffer.Bytes())
}
}
fmt.Println("Done with", directory)
}
// Login is synchronized. Set timeout in millisecond.
func (t *Connection) Login(clientID string, secret string,
timeout time.Duration) (err error) {
glog.Infof("Login %s secret %s", clientID, secret)
// ClientID
b, err := octetString(clientID, 8)
if err != nil {
return
}
body := bytes.NewBuffer(b)
// AuthenticatorClient
// MD5（ClientID + 7 字节的二进制 0（0x00） + Shared secret + Timestamp）
md5 := md5.New()
_, err = io.WriteString(md5, clientID)
if err != nil {
return
}
_, err = md5.Write([]byte{0, 0, 0, 0, 0, 0, 0})
if err != nil {
return
}
_, err = io.WriteString(md5, secret)
if err != nil {
return
}
timestamp := getTimestamp()
_, err = io.WriteString(md5, timestamp)
if err != nil {
return
}
ac := md5.Sum(nil)
glog.V(1).Infof("AuthenticatorClient 0x%x", ac)
_, err = body.Write(ac)
if err != nil {
return
}
// login mode
err = body.WriteByte(LOGIN_MODE_SEND)
if err != nil {
return
}
// timestamp in uint32
its, err := strconv.ParseUint(timestamp, 10, 32)
if err != nil {
return
}
err = binary.Write(body, binary.BigEndian, uint32(its))
if err != nil {
return
}
// version
err = body.WriteByte(VERSION)
if err != nil {
return
}
seq, err := t.writeRequest(REQID_LOGIN, body.Bytes())
if err != nil {
return
}
c := make(chan int)
t.pool[seq] = &loginReq{
Secret: secret,
AC: ac,
Sync: c,
}
// wait for respond
select {
case c <- 1:
case <-time.After(timeout):
err = errors.New("Login timed out")
close(c)
}
return
}
func encodeKey(key []byte) []byte {
md5 := md5.New()
md5.Write(key)
return md5.Sum(nil)
}
func MD5Sum(in string) string {
md5 := md5.New()
md5.Write([]byte(in))
return fmt.Sprintf("%x", md5.Sum(nil))
}
// Hash generates a MD5 hash based on current ID and a suffix string.
func (v ID) Hash(suffix []byte) []byte {
md5 := md5.New()
md5.Write(v[:])
md5.Write(suffix)
return md5.Sum(nil)
}
func calcMd5(s []byte) string {
md5 := md5.New()
md5.Write(s)
return fmt.Sprintf("%x", md5.Sum(nil))
}
func md5sum(data []byte) []byte {
md5 := md5.New()
md5.Write(data)
return md5.Sum(nil)
}
