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core: remove Neo.Crypto.CheckMultisigWithECDsaSecp256k1

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Koblitz RIP.
This commit is contained in:
Anna Shaleva 2021-03-09 17:38:41 +03:00
parent cdaca7be3e
commit 7126637f73
7 changed files with 32 additions and 73 deletions
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15
pkg/core/interop/crypto/ecdsa.go
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@ -5,7 +5,6 @@ import (
"errors"
"fmt"
"github.com/btcsuite/btcd/btcec"
"github.com/nspcc-dev/neo-go/pkg/core/fee"
"github.com/nspcc-dev/neo-go/pkg/core/interop"
"github.com/nspcc-dev/neo-go/pkg/crypto"
@ -19,18 +18,6 @@ import (
// ECDSASecp256r1CheckMultisig checks multiple ECDSA signatures at once using
// Secp256r1 elliptic curve.
func ECDSASecp256r1CheckMultisig(ic *interop.Context) error {
return ecdsaCheckMultisig(ic, elliptic.P256())
}
// ECDSASecp256k1CheckMultisig checks multiple ECDSA signatures at once using
// Secp256k1 elliptic curve.
func ECDSASecp256k1CheckMultisig(ic *interop.Context) error {
return ecdsaCheckMultisig(ic, btcec.S256())
}
// ecdsaCheckMultisig is internal representation of ECDSASecp256r1CheckMultisig and
// ECDSASecp256k1CheckMultisig
func ecdsaCheckMultisig(ic *interop.Context, curve elliptic.Curve) error {
hashToCheck, err := getMessageHash(ic, ic.VM.Estack().Pop().Item())
if err != nil {
return err
@ -51,7 +38,7 @@ func ecdsaCheckMultisig(ic *interop.Context, curve elliptic.Curve) error {
if len(pkeys) < len(sigs) {
return errors.New("more signatures than there are keys")
}
sigok := vm.CheckMultisigPar(ic.VM, curve, hashToCheck.BytesBE(), pkeys, sigs)
sigok := vm.CheckMultisigPar(ic.VM, elliptic.P256(), hashToCheck.BytesBE(), pkeys, sigs)
ic.VM.Estack().PushVal(sigok)
return nil
}