mirror of https://github.com/status-im/go-waku.git
81 lines
2.1 KiB
Go
81 lines
2.1 KiB
Go
package noise
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import (
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"crypto/ed25519"
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b64 "encoding/base64"
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"errors"
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"strings"
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)
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type QR struct {
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applicationName string
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applicationVersion string
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shardId string
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ephemeralPublicKey ed25519.PublicKey
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committedStaticKey []byte
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}
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func NewQR(applicationName, applicationVersion, shardId string, ephemeralKey ed25519.PublicKey, committedStaticKey []byte) QR {
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return QR{
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applicationName: applicationName,
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applicationVersion: applicationVersion,
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shardId: shardId,
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ephemeralPublicKey: ephemeralKey,
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committedStaticKey: committedStaticKey,
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}
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}
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// Serializes input parameters to a base64 string for exposure through QR code (used by WakuPairing)
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func (qr QR) String() string {
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return b64.StdEncoding.EncodeToString([]byte(qr.applicationName)) + ":" +
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b64.StdEncoding.EncodeToString([]byte(qr.applicationVersion)) + ":" +
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b64.StdEncoding.EncodeToString([]byte(qr.shardId)) + ":" +
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b64.StdEncoding.EncodeToString(qr.ephemeralPublicKey) + ":" +
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b64.StdEncoding.EncodeToString(qr.committedStaticKey[:])
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}
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func (qr QR) Bytes() []byte {
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return []byte(qr.String())
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}
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// Deserializes input string in base64 to the corresponding (applicationName, applicationVersion, shardId, ephemeralKey, committedStaticKey)
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func StringToQR(qrString string) (QR, error) {
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values := strings.Split(qrString, ":")
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if len(values) != 5 {
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return QR{}, errors.New("invalid qr string")
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}
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applicationName, err := b64.StdEncoding.DecodeString(values[0])
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if err != nil {
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return QR{}, err
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}
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applicationVersion, err := b64.StdEncoding.DecodeString(values[1])
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if err != nil {
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return QR{}, err
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}
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shardId, err := b64.StdEncoding.DecodeString(values[2])
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if err != nil {
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return QR{}, err
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}
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ephemeralKey, err := b64.StdEncoding.DecodeString(values[3])
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if err != nil {
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return QR{}, err
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}
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committedStaticKey, err := b64.StdEncoding.DecodeString(values[4])
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if err != nil {
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return QR{}, err
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}
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return QR{
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applicationName: string(applicationName),
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applicationVersion: string(applicationVersion),
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shardId: string(shardId),
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ephemeralPublicKey: ephemeralKey,
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committedStaticKey: committedStaticKey,
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}, nil
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}
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