51 lines
1.5 KiB
Go
51 lines
1.5 KiB
Go
package protocol
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import (
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"crypto/ecdsa"
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"time"
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"github.com/golang/protobuf/proto"
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"github.com/pkg/errors"
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"github.com/status-im/status-go/eth-node/crypto"
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"github.com/status-im/status-go/eth-node/types"
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"github.com/status-im/status-go/protocol/protobuf"
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)
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var (
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// ErrInvalidDecodedValue means that the decoded message is of wrong type.
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// This might mean that the status message serialization tag changed.
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ErrInvalidDecodedValue = errors.New("invalid decoded value type")
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)
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// TimestampInMsFromTime returns a TimestampInMs from a time.Time instance.
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func TimestampInMsFromTime(t time.Time) uint64 {
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return uint64(t.UnixNano() / int64(time.Millisecond))
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}
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// MessageID calculates the messageID from author's compressed public key
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// and not encrypted but encoded payload.
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func MessageID(author *ecdsa.PublicKey, data []byte) types.HexBytes {
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keyBytes := crypto.FromECDSAPub(author)
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return types.HexBytes(crypto.Keccak256(append(keyBytes, data...)))
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}
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// WrapMessageV1 wraps a payload into a protobuf message and signs it if an identity is provided
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func WrapMessageV1(payload []byte, messageType protobuf.ApplicationMetadataMessage_Type, identity *ecdsa.PrivateKey) ([]byte, error) {
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var signature []byte
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if identity != nil {
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var err error
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signature, err = crypto.Sign(crypto.Keccak256(payload), identity)
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if err != nil {
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return nil, err
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}
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}
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message := &protobuf.ApplicationMetadataMessage{
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Signature: signature,
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Type: messageType,
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Payload: payload,
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}
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return proto.Marshal(message)
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}
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