func GetHash(a string) (hash.Hash, error) {
var h hash.Hash
switch a {
case "adler32":
h = adler32.New()
case "crc32", "crc32ieee":
h = crc32.New(crc32.MakeTable(crc32.IEEE))
case "crc32castagnoli":
h = crc32.New(crc32.MakeTable(crc32.Castagnoli))
case "crc32koopman":
h = crc32.New(crc32.MakeTable(crc32.Koopman))
case "crc64", "crc64iso":
h = crc64.New(crc64.MakeTable(crc64.ISO))
case "crc64ecma":
h = crc64.New(crc64.MakeTable(crc64.ECMA))
case "fnv", "fnv32":
h = fnv.New32()
case "fnv32a":
h = fnv.New32a()
case "fnv64":
h = fnv.New64()
case "fnv64a":
h = fnv.New64a()
case "hmac", "hmacsha256":
h = hmac.New(sha256.New, []byte(key))
case "hmacmd5":
h = hmac.New(md5.New, []byte(key))
case "hmacsha1":
h = hmac.New(sha1.New, []byte(key))
case "hmacsha512":
h = hmac.New(sha512.New, []byte(key))
case "md4":
h = md4.New()
case "md5":
h = md5.New()
case "ripemd160":
h = ripemd160.New()
case "sha1":
h = sha1.New()
case "sha224":
h = sha256.New224()
case "sha256":
h = sha256.New()
case "sha384":
h = sha512.New384()
case "sha512":
h = sha512.New()
default:
return nil, errors.New("Invalid algorithm")
}
return h, nil
}
func (s *descbc) Decrypt(salt []byte, algo, usage int, data []byte) ([]byte, error) {
var h hash.Hash
switch algo {
case cryptDesCbcMd5:
h = md5.New()
case cryptDesCbcMd4:
h = md4.New()
default:
return nil, ErrProtocol
}
if (len(data) & 7) != 0 {
return nil, ErrProtocol
}
iv := [8]byte{}
b, _ := des.NewCipher(s.key)
c := cipher.NewCBCDecrypter(b, iv[:])
c.CryptBlocks(data, data)
chk := make([]byte, h.Size())
h.Write(data[:8])
h.Write(chk) // Just need h.Size() zero bytes instead of the checksum
h.Write(data[8+len(chk):])
h.Sum(chk[:0])
if subtle.ConstantTimeCompare(chk, data[8:8+len(chk)]) != 1 {
return nil, ErrProtocol
}
return data[8+len(chk):], nil
}
func calcNTResponse(nonce [8]byte, password string) [24]byte {
var hash [21]byte
h := md4.New()
h.Write(appendUTF16LE(nil, password))
h.Sum(hash[:0])
return calcNTLMResponse(nonce, hash)
}
func (s *descbc) Sign(algo, usage int, data ...[]byte) ([]byte, error) {
var h hash.Hash
switch algo {
case signGssDes:
sz := 0
for _, d := range data {
sz += len(d)
}
sz = (sz + 7) &^ 7
u := make([]byte, sz)
v := u[:0]
for _, d := range data {
v = append(v, d...)
}
iv := [8]byte{}
b, _ := des.NewCipher(s.key)
c := cipher.NewCBCEncrypter(b, iv[:])
c.CryptBlocks(u, u)
return u[len(u)-8:], nil
case signGssMd5Des:
h = md5.New()
for _, d := range data {
h.Write(d)
}
return s.Sign(signGssDes, usage, h.Sum(nil))
case signMd5Des:
h = md5.New()
case signMd4Des:
h = md4.New()
default:
return unkeyedSign(algo, usage, data...)
}
var key [8]byte
for i := 0; i < 8; i++ {
key[i] = s.key[i] ^ 0xF0
}
chk := make([]byte, 24)
io.ReadFull(rand.Reader, chk[:8])
h.Write(chk[:8])
for _, d := range data {
h.Write(d)
}
h.Sum(chk[8:])
iv := [8]byte{}
b, _ := des.NewCipher(s.key)
c := cipher.NewCBCEncrypter(b, iv[:])
c.CryptBlocks(chk, chk)
return chk, nil
}
func TestRunReceiver(t *testing.T) {
return
var wg sync.WaitGroup
c := md4.New()
io.WriteString(c, "hello world")
s := fmt.Sprintf("%x", c.Sum(nil))
fmt.Println(s)
wg.Add(1)
var srvCfg ReceiverConfig
srvCfg.ListenAddr = "0.0.0.0:9999"
srvCfg.SyncRootFolder = "/Users/smalllixin/Documents/lightchaser/temp"
syncReceiver := NewSyncReceiver(&srvCfg)
go func() {
syncReceiver.Start()
}()
go func() {
defer func() {
fmt.Println("client defer run")
syncReceiver.Stop()
wg.Done()
}()
var clientCfg SenderConfig
clientCfg.SrvAddr = "127.0.0.1:9999"
clientCfg.SyncRootFolder = "/Users/smalllixin/Documents/pyspace"
client := NewSyncSender(&clientCfg)
files, err := ioutil.ReadDir(clientCfg.SyncRootFolder)
if err != nil {
t.Fatal("ReadDir err:", err)
return
}
for _, f := range files {
if !f.IsDir() {
fileToSync := f.Name() //path.Join(clientCfg.SyncRootFolder, )
client.SyncAFile(fileToSync)
}
}
//client.SyncAFile("udpclient.py")
}()
wg.Wait()
//time.Sleep()
}
// rc4HmacKey converts a UTF8 password into a key suitable for use with the
// rc4hmac.
func rc4HmacKey(password string) []byte {
// Convert password from UTF8 to UTF16-LE
s := make([]byte, 0)
for _, r := range password {
if r > 0x10000 {
a, b := utf16.EncodeRune(r)
s = append(s, byte(a), byte(a>>8), byte(b), byte(b>>8))
} else {
s = append(s, byte(r), byte(r>>8))
}
}
h := md4.New()
h.Write(s)
return h.Sum(nil)
}
func unkeyedSign(algo, usage int, data ...[]byte) ([]byte, error) {
var h hash.Hash
switch algo {
case signMd5:
h = md5.New()
case signMd4:
h = md4.New()
default:
return nil, ErrProtocol
}
for _, d := range data {
h.Write(d)
}
return h.Sum(nil), nil
}
func (s *descbc) Encrypt(salt []byte, usage int, data ...[]byte) []byte {
var h hash.Hash
switch s.etype {
case cryptDesCbcMd5:
h = md5.New()
case cryptDesCbcMd4:
h = md4.New()
default:
panic("")
}
outsz := 8 + h.Size()
for _, d := range data {
outsz += len(d)
}
outsz = (outsz + 7) &^ 7
out := make([]byte, outsz)
io.ReadFull(rand.Reader, out[:8])
v := out[8+h.Size():]
for _, d := range data {
n := copy(v, d)
v = v[n:]
}
h.Write(out)
h.Sum(out[:8])
iv := [8]byte{}
b, _ := des.NewCipher(s.key)
c := cipher.NewCBCEncrypter(b, iv[:])
c.CryptBlocks(out, out)
return out
}
func GetHash(alg string) (hash.Hash, error) {
var h hash.Hash
switch alg {
default:
return nil, fmt.Errorf("Invalid algorithm")
case "md4":
h = md4.New()
case "md5":
h = md5.New()
case "ripemd160":
h = ripemd160.New()
case "sha1":
h = sha1.New()
case "sha224":
h = sha256.New224()
case "sha256":
h = sha256.New()
case "sha384":
h = sha512.New384()
case "sha512":
h = sha512.New()
}
return h, nil
}
func main() {
h := md4.New()
h.Write([]byte("Rosetta Code"))
fmt.Printf("%x\n", h.Sum(nil))
}
func md4Sum(data []byte, list []byte) []byte {
md4 := md4.New()
md4.Write(data)
return md4.Sum(list)
}
