MnemonicToByteArray() does not return original byte array passed to NewMnemonic()

[dncohen]

I'm probably missing something fundamental... I expected address.NewMnemonic() and address.MnemonicToByteArray() to be the inverse of one another.

seed, err := address.GenerateSeed(address.RecommendedSeedLen)
mnemonic, err := address.NewMnemonic(seed)
sanity, err := address.MnemonicToByteArray(mnemonic)
if !bytes.Equal(seed, sanity) {
  log.Panic("Seed sanity check failed.")
}

In the above code, sanity has more bytes than seed. I suspect this has to do with checksum added in NewMnemonic(), but I'm not certain.

I'm wondering how can I get back the bytes that I originally passed into NewMnemonic() ?

Thanks for any help.

[winteraz]

This could be same as this https://github.com/tyler-smith/go-bip39/issues/4 . Such a shame this lib is no longer maintained.