forked from TrueCloudLab/neoneo-go
31 lines
771 B
Go
31 lines
771 B
Go
package crypto
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import (
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"github.com/nspcc-dev/neo-go/pkg/core/interop"
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"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
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"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
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"github.com/nspcc-dev/neo-go/pkg/vm"
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)
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// ECDSAVerify checks ECDSA signature.
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func ECDSAVerify(ic *interop.Context, v *vm.VM) error {
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msg := getMessage(ic, v.Estack().Pop().Item())
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hashToCheck := hash.Sha256(msg).BytesBE()
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keyb := v.Estack().Pop().Bytes()
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signature := v.Estack().Pop().Bytes()
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pkey, err := keys.NewPublicKeyFromBytes(keyb)
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if err != nil {
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return err
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}
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res := pkey.Verify(signature, hashToCheck)
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v.Estack().PushVal(res)
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return nil
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}
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func getMessage(_ *interop.Context, item vm.StackItem) []byte {
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msg, err := item.TryBytes()
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if err != nil {
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panic(err)
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}
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return msg
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}
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