Exemplo n.º 1
0
// Create a new Client with specified ClientDescription
func NewClient(d ClientDescription) (*Client, error) {
	client := new(http.Client)
	encrypter, err := blowfish.NewCipher([]byte(d.EncryptKey))
	if err != nil {
		return nil, err
	}
	decrypter, err := blowfish.NewCipher([]byte(d.DecryptKey))
	if err != nil {
		return nil, err
	}
	return &Client{
		description: d,
		http:        client,
		encrypter:   encrypter,
		decrypter:   decrypter,
	}, nil
}
Exemplo n.º 2
0
func newBlockCipher(cipherT string, key []byte) (cipher.Block, error) {
	switch cipherT {
	case "AES-128", "AES-256":
		return aes.NewCipher(key)
	case "Blowfish":
		return bfish.NewCipher(key)
	default:
		return nil, fmt.Errorf("Unrecognized cipher type: %s", cipherT)
	}
}
Exemplo n.º 3
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// Enc encrypts the data with the specified key
func Enc(ppt, key []byte) ([]byte, error) {
	ppt = blowfishChecksizeAndPad(ppt)
	ecipher, err := blowfish.NewCipher(key)
	if err != nil {
		return nil, err
	}
	ciphertext := make([]byte, blowfish.BlockSize+len(ppt))
	eiv := ciphertext[:blowfish.BlockSize]
	ecbc := cipher.NewCBCEncrypter(ecipher, eiv)
	ecbc.CryptBlocks(ciphertext[blowfish.BlockSize:], ppt)
	return ciphertext, nil
}
Exemplo n.º 4
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// Dec decrypts the data with the specified key
func Dec(et, key []byte) ([]byte, error) {
	dcipher, err := blowfish.NewCipher(key)
	if err != nil {
		return nil, err
	}
	div := et[:blowfish.BlockSize]
	decrypted := et[blowfish.BlockSize:]
	if len(decrypted)%blowfish.BlockSize != 0 {
		return nil, errors.New("decrypted is not a multiple of blowfish.BlockSize")
	}
	dcbc := cipher.NewCBCDecrypter(dcipher, div)
	dcbc.CryptBlocks(decrypted, decrypted)
	return bytes.Trim(decrypted, "\x00"), nil
}
Exemplo n.º 5
0
func encryptFile(source, dst string, key []byte) error {
	sourcebytes, err := ioutil.ReadFile(source)

	if err != nil {
		return err
	}

	sourceHash := createHash(sourcebytes)

	sourcebytes = append(sourcebytes, sourceHash...)

	if err != nil {
		return err
	}

	aesCipher, err := aes.NewCipher(key)
	blowfishCipher, err := blowfish.NewCipher(key)

	if err != nil {
		return err
	}

	iv := make([]byte, 16)
	_, err = rand.Read(iv)

	aesEncrypter := cipher.NewCFBEncrypter(aesCipher, iv)
	blowfishEncrypter := cipher.NewCFBEncrypter(blowfishCipher, iv[0:8])

	destbytes := make([]byte, len(sourcebytes))

	aesEncrypter.XORKeyStream(destbytes, sourcebytes)
	sourcebytes = destbytes
	blowfishEncrypter.XORKeyStream(destbytes, sourcebytes)

	if err != nil {
		return err
	}

	destbytes = append(destbytes, iv...)

	//TODO: Use the same credentials as the source
	ioutil.WriteFile(dst, destbytes, 777)

	return nil
}
Exemplo n.º 6
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func main() {
	key := []byte("my key")
	cipher, err := blowfish.NewCipher(key)
	if err != nil {
		fmt.Println(err.Error())
	}

	src := []byte("hello\n\n\n")
	var enc [512]byte

	cipher.Encrypt(enc[0:], src)
	//fmt.Println(string(enc[0:]))
	var decrypt [8]byte
	cipher.Decrypt(decrypt[0:], enc[0:])
	result := bytes.NewBuffer(nil)
	result.Write(decrypt[0:8])
	fmt.Println(string(result.Bytes()))
}
Exemplo n.º 7
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// Generate returns a secure token for use with a request to an Edgecast cache
// host.
//
// The secret is used to encrypt the params string. The params string must not
// be longer than 512 chars.
func Generate(secret, params string) (string, error) {
	if len(params) >= maxTokenChars {
		return "", errors.New("Input too long")
	}

	plaintext := []byte(fmt.Sprintf("ec_secure=%03d&%s", len(params)+14, params))
	block, err := blowfish.NewCipher([]byte(secret))
	if err != nil {
		return "", err
	}
	ivec := make([]byte, blowfish.BlockSize)
	stream := cipher.NewCFBEncrypter(block, ivec)

	ciphertext := make([]byte, len(plaintext))
	stream.XORKeyStream(ciphertext, plaintext)

	return fmt.Sprintf("%02x", ciphertext), nil
}
Exemplo n.º 8
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func init() {
	_debug = NewDebug(SYSTEM, "formal/padded")
	SetNewCipherFunc("aes",
		func(key []byte) (c cipher.Block, e error) {
			c, e = aes.NewCipher(key)
			return
		})
	SetNewCipherFunc("blowfish",
		func(key []byte) (c cipher.Block, e error) {
			c, e = blowfish.NewCipher(key)
			return
		})

	SetPaddingFuncs("dtgpadding", dtgPad, dtgRemove)
	SetPaddingFuncs("pkcs5padding", pkcs5Pad, pkcs5Remove)
	SetPaddingFuncs("pkcs7padding", pkcs5Pad, pkcs5Remove)
	SetPaddingFuncs("zeropadding", zeroPaddingPad, zeroPaddingRemove)
	SetModeFuncs("ecb", NewECBEncrypter, NewECBDecrypter)
	SetModeFuncs("cbc", cipher.NewCBCEncrypter, cipher.NewCBCDecrypter)
	SetModeFuncs("rcbc", NewRCBCEncrypter, NewRCBCDecrypter)
}
Exemplo n.º 9
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func decryptFile(source, dst string, key []byte) error {
	sourcebytes, err := ioutil.ReadFile(source)
	if err != nil {
		return err
	}

	iv := sourcebytes[len(sourcebytes)-16:]
	sourcebytes = sourcebytes[:len(sourcebytes)-16]

	contentLength := len(sourcebytes)
	destbytes := make([]byte, contentLength)

	aesCipher, err := aes.NewCipher(key)

	if err != nil {
		return err
	}

	blowfishCipher, err := blowfish.NewCipher(key)

	blowFishDecryptor := cipher.NewCFBDecrypter(blowfishCipher, iv[0:8])
	blowFishDecryptor.XORKeyStream(destbytes, sourcebytes)
	sourcebytes = destbytes

	aesDecryptor := cipher.NewCFBDecrypter(aesCipher, iv)
	aesDecryptor.XORKeyStream(destbytes, sourcebytes)

	h := destbytes[len(destbytes)-32:]
	destbytes = destbytes[:len(destbytes)-32]

	if !areEqual(h, createHash(destbytes)) {
		return fmt.Errorf("Wrong password")
	}

	//TODO: Use the same credentials as the source
	ioutil.WriteFile(dst, destbytes, 777)

	return nil
}
Exemplo n.º 10
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func newBlowFishStream(key, iv []byte, doe DecOrEnc) (cipher.Stream, error) {
	block, err := blowfish.NewCipher(key)
	return newStream(block, err, key, iv, doe)
}
Exemplo n.º 11
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func (e *Engine) blowfish_ctr() error {
	return e.ctr(func(key []byte) (cipher.Block, error) { return blowfish.NewCipher(key) })
}
Exemplo n.º 12
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func (e *Engine) unblowfish_cfb() error {
	return e.uncfb(func(key []byte) (cipher.Block, error) { return blowfish.NewCipher(key) })
}
Exemplo n.º 13
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// Blowfish: obsolete, but for fun
func BenchmarkBlowfish_1K(b *testing.B) {
	block, _ := blowfish.NewCipher(buf[:32])
	benchmarkBlock(b, block, 1024)
}