func CreateACContextWithInputEntropy(channel []byte, inputEntropy []byte) (context *ickp.SecretKey, err error) {
context = new(ickp.SecretKey)
context.SetNonce(0)
//context.nonce = 0
context.SetBob(channel)
//context.bob = channel
context.Overhead = secretbox.Overhead
shaEntropy, err := icutl.HashSHA3Data(inputEntropy)
if err != nil {
//return nil, acprotoError(-1, "CreateACContextWithInputEntropy().HashSHA3Data(): ", err)
return nil, &icutl.AcError{Value: -1, Msg: "CreateACContextWithInputEntropy().HashSHA3Data(): ", Err: err}
}
context.SetKey(shaEntropy)
//copy(context.key[:], shaEntropy)
return context, nil
}
func (skgen *KeyGenerator) Init(input []byte, channel []byte, nick []byte, serv []byte) (err error) {
//skgen.hash = sha3.NewKeccak256
// go.crypto changed it... mlgrmlbmlbm
skgen.hash = sha3.New256
if input != nil {
skgen.input = make([]byte, len(input))
copy(skgen.input, input)
} else { // handle empty input with crypto/rand input
skgen.input = make([]byte, 8192)
_, err = io.ReadFull(rand.Reader, skgen.input)
if err != nil {
return err
}
}
if channel != nil {
skgen.channel = make([]byte, len(channel))
copy(skgen.channel, channel)
}
if nick != nil {
skgen.nick = make([]byte, len(nick))
copy(skgen.nick, nick)
}
if serv != nil {
skgen.server = make([]byte, len(serv))
copy(skgen.server, serv)
}
prng := make([]byte, 16384)
_, err = io.ReadFull(rand.Reader, prng)
if err != nil {
return err
// fmt.Fprintf(os.Stderr, "POUET POUET Error")
// fmt.Println(err)
}
// fmt.Fprintf(os.Stderr, "read %d random bytes\n", n)
//dk := pbkdf2.Key([]byte("some password"), salt, 4096, 32, sha1.New)
//func Key(password, salt []byte, iter, keyLen int, h func() hash.Hash) []byte
// XXX TODO be sure of the PBKDF2 FUNCTION CALL ARGUMENTS...
skgen.input_pbkdf = pbkdf2.Key(skgen.input, prng, 32768, 32, skgen.hash)
// fmt.Fprintf(os.Stderr, "PBKDF LEN: %d\n", len(skgen.input_pbkdf))
// in Read() we will apply the HKDF function.. onto the PBKDF2 derived key.
// XXX TODO: just to be sure implement HASH of each value instead of values
// only.
str_build := new(bytes.Buffer)
str_build.Write(serv)
str_build.WriteByte(byte(':'))
str_build.Write(nick)
str_build.WriteByte(byte(':'))
str_build.Write(channel)
skgen.info_hkdf, err = icutl.HashSHA3Data(str_build.Bytes())
if err != nil {
return err
}
return nil
}
