72 lines
2.1 KiB
Go
72 lines
2.1 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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// TimestampInMs is a timestamp in milliseconds.
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type TimestampInMs int64
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// Time returns a time.Time instance.
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func (t TimestampInMs) Time() time.Time {
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ts := int64(t)
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seconds := ts / 1000
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return time.Unix(seconds, (ts%1000)*int64(time.Millisecond))
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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) TimestampInMs {
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return TimestampInMs(t.UnixNano() / int64(time.Millisecond))
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}
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// Flags define various boolean properties of a message.
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type Flags uint64
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func (f *Flags) Set(val Flags) { *f = *f | val }
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func (f *Flags) Clear(val Flags) { *f = *f &^ val }
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func (f *Flags) Toggle(val Flags) { *f = *f ^ val }
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func (f Flags) Has(val Flags) bool { return f&val != 0 }
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// A list of Message flags. By default, a message is unread.
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const (
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MessageRead Flags = 1 << iota
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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, 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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Payload: payload,
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}
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return proto.Marshal(message)
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}
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