func SignFactoidTransaction(n uint64, tx interfaces.ITransaction) {
tx.AddAuthorization(NewFactoidRCDAddress(n))
data, err := tx.MarshalBinarySig()
if err != nil {
panic(err)
}
sig := factoid.NewSingleSignatureBlock(NewPrivKey(n), data)
//str, err := sig.JSONString()
//fmt.Printf("sig, err - %v, %v\n", str, err)
tx.SetSignatureBlock(0, sig)
err = tx.Validate(1)
if err != nil {
panic(err)
}
err = tx.ValidateSignatures()
if err != nil {
panic(err)
}
}
func (w RCD_1) CheckSig(trans interfaces.ITransaction, sigblk interfaces.ISignatureBlock) bool {
if sigblk == nil {
return false
}
data, err := trans.MarshalBinarySig()
if err != nil {
return false
}
signature := sigblk.GetSignature(0)
if signature == nil {
return false
}
cryptosig := signature.GetSignature()
if cryptosig == nil {
return false
}
return ed25519.VerifyCanonical(&w.PublicKey, data, cryptosig)
}
func (w *SCWallet) SignInputs(trans interfaces.ITransaction) (bool, error) {
data, err := trans.MarshalBinarySig() // Get the part of the transaction we sign
if err != nil {
return false, err
}
var numSigs int = 0
inputs := trans.GetInputs()
rcds := trans.GetRCDs()
for i, rcd := range rcds {
rcd1, ok := rcd.(*RCD_1)
if ok {
pub := rcd1.GetPublicKey()
wex, err := w.db.Get([]byte(constants.W_ADDRESS_PUB_KEY), pub, new(WalletEntry))
if err != nil {
return false, err
}
we := wex.(*WalletEntry)
if we != nil {
var pri [constants.SIGNATURE_LENGTH]byte
copy(pri[:], we.private[0])
bsig := ed25519.Sign(&pri, data)
sig := new(FactoidSignature)
sig.SetSignature(bsig[:])
sigblk := new(SignatureBlock)
sigblk.AddSignature(sig)
trans.SetSignatureBlock(i, sigblk)
numSigs += 1
}
}
}
return numSigs == len(inputs), nil
}