func Fuzz(data []byte) int {
n, err := snappy.DecodedLen(data)
if err != nil || n > 1e6 {
return 0
}
if n < 0 {
panic("negative decoded len")
}
dec, err := snappy.Decode(nil, data)
if err != nil {
if dec != nil {
panic("dec is not nil")
}
return 0
}
if len(dec) != n {
println(len(dec), n)
panic("bad decoded len")
}
n = snappy.MaxEncodedLen(len(dec))
enc, err := snappy.Encode(nil, dec)
if err != nil {
panic(err)
}
if len(enc) > n {
panic("bad encoded len")
}
return 1
}
func (s *hopCipher) encrypt(msg []byte) []byte {
cmsg := make([]byte, snappy.MaxEncodedLen(len(msg)))
cmsg, _ = snappy.Encode(cmsg, msg)
pmsg := PKCS5Padding(cmsg, cipherBlockSize)
buf := make([]byte, len(pmsg)+cipherBlockSize)
iv := buf[:cipherBlockSize]
rand.Read(iv)
encrypter := _cipher.NewCBCEncrypter(s.block, iv)
encrypter.CryptBlocks(buf[cipherBlockSize:], pmsg)
return buf
}