43 lines
1 KiB
Go
43 lines
1 KiB
Go
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package invoke
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import (
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"bytes"
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"crypto/ecdsa"
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"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
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crypto "github.com/nspcc-dev/neofs-crypto"
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"github.com/nspcc-dev/neofs-node/pkg/morph/client"
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)
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// InnerRingIndex returns index of the `key` in the inner ring list from sidechain
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// along with total size of inner ring list. If key is not in the inner ring list,
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// then returns `-1` as index.
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func InnerRingIndex(cli *client.Client, key *ecdsa.PublicKey) (int32, int32, error) {
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if cli == nil {
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return 0, 0, client.ErrNilClient
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}
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innerRing, err := cli.NeoFSAlphabetList()
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if err != nil {
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return 0, 0, err
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}
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return keyPosition(key, innerRing), int32(len(innerRing)), nil
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}
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// keyPosition returns "-1" if key is not found in the list, otherwise returns
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// index of the key.
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func keyPosition(key *ecdsa.PublicKey, list keys.PublicKeys) (result int32) {
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result = -1
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rawBytes := crypto.MarshalPublicKey(key)
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for i := range list {
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if bytes.Equal(list[i].Bytes(), rawBytes) {
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result = int32(i)
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break
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}
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}
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return result
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}
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