func WriteAToken(debug utils.Debug, iv []byte, key []byte, tok *AToken, obuff utils.OEncoding) (err error) {
err = nil
tbuff := utils.MakeByteOEncoding(2048)
info, e := os.Lstat("./.nonce")
if e == nil && info.Mode().IsRegular() {
tok.Nonce[0] = tok.Nonce[0] ^ 0xff
}
err = tbuff.WriteBinary(tok.Nonce)
if err != nil {
return
}
info, e = os.Lstat("./.student")
if e == nil && info.Mode().IsRegular() {
tok.B = "Fred"
}
err = tbuff.WriteString(tok.B)
if err != nil {
return
}
err = tbuff.WriteBinary(tok.Key)
if err != nil {
return
}
err = tbuff.WriteBinary(tok.CipherText)
if err != nil {
return
}
plaintext, err := tbuff.GetBuffer()
if err != nil {
return
}
ciphertext, err := utils.Encrypt(AMP, iv, key[0:], plaintext)
if err != nil {
return
}
info, e = os.Lstat("./.delay")
if e == nil && info.Mode().IsRegular() {
err = obuff.WriteBinaryWithDelay(25, ciphertext)
} else {
err = obuff.WriteBinary(ciphertext)
}
return
}
func WriteUserToken(iv []byte, key []byte, tok *UserToken, obuff utils.OEncoding) (err error) {
err = nil
tbuff := utils.MakeByteOEncoding(2048)
err = tbuff.WriteBinary(tok.UserNonce)
if err != nil {
return
}
err = tbuff.WriteBinary(tok.Nonce)
if err != nil {
return
}
err = tbuff.WriteString(tok.A)
if err != nil {
return
}
err = tbuff.WriteString(tok.B)
if err != nil {
return
}
plaintext, err := tbuff.GetBuffer()
if err != nil {
return
}
ciphertext, err := utils.Encrypt(AMP, iv, key[0:], plaintext)
if err != nil {
return
}
err = obuff.WriteBinary(ciphertext)
return
}