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core: add System.Contract.CreateMultisigAccount interop

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This commit is contained in:
Anna Shaleva 2021-02-18 20:29:14 +03:00
parent fe918e28f2
commit 5a37201319
4 changed files with 78 additions and 0 deletions
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27
pkg/core/interop_system.go
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@ -4,13 +4,16 @@ import (
"crypto/elliptic"
"errors"
"fmt"
"math"
"github.com/nspcc-dev/neo-go/pkg/core/block"
"github.com/nspcc-dev/neo-go/pkg/core/interop"
"github.com/nspcc-dev/neo-go/pkg/core/native"
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
@ -221,6 +224,30 @@ func contractIsStandard(ic *interop.Context) error {
return nil
}
// contractCreateMultisigAccount calculates multisig contract scripthash for a
// given m and a set of public keys.
func contractCreateMultisigAccount(ic *interop.Context) error {
m := ic.VM.Estack().Pop().BigInt()
if !m.IsInt64() || m.Int64() > math.MaxInt32 {
return errors.New("m should fit int32")
}
arr := ic.VM.Estack().Pop().Array()
pubs := make(keys.PublicKeys, len(arr))
for i, pk := range arr {
p, err := keys.NewPublicKeyFromBytes(pk.Value().([]byte), elliptic.P256())
if err != nil {
return err
}
pubs[i] = p
}
script, err := smartcontract.CreateMultiSigRedeemScript(int(m.Int64()), pubs)
if err != nil {
return err
}
ic.VM.Estack().PushVal(hash.Hash160(script).BytesBE())
return nil
}
// contractCreateStandardAccount calculates contract scripthash for a given public key.
func contractCreateStandardAccount(ic *interop.Context) error {
h := ic.VM.Estack().Pop().Bytes()