63 lines
1.7 KiB
Go
63 lines
1.7 KiB
Go
package payload
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import (
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"go.mau.fi/mautrix-gmessages/libgm/binary"
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"go.mau.fi/mautrix-gmessages/libgm/crypto"
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"go.mau.fi/mautrix-gmessages/libgm/util"
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)
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func RegisterPhoneRelay(jwk *crypto.JWK) ([]byte, *binary.AuthenticationContainer, error) {
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id := util.RandomUUIDv4()
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encryptedKeys, encryptErr := uncompressKey(jwk)
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if encryptErr != nil {
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return nil, nil, encryptErr
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}
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payloadData := &binary.AuthenticationContainer{
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AuthMessage: &binary.AuthenticationMessage{
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RequestID: id,
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Network: Network,
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ConfigVersion: ConfigMessage,
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},
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BrowserDetails: BrowserDetailsMessage,
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Data: &binary.AuthenticationContainer_KeyData{
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KeyData: &binary.KeyData{
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EcdsaKeys: &binary.ECDSAKeys{
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Field1: 2,
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EncryptedKeys: encryptedKeys,
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},
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},
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},
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}
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encoded, err4 := binary.EncodeProtoMessage(payloadData)
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if err4 != nil {
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return nil, payloadData, err4
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}
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return encoded, payloadData, nil
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}
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func uncompressKey(jwk *crypto.JWK) ([]byte, error) {
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decodedPrivateKey, err2 := jwk.PrivKeyB64Bytes()
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if err2 != nil {
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return nil, err2
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}
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jwk.PrivateBytes = decodedPrivateKey
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uncompressedPublicKey, err3 := jwk.UncompressPubKey()
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if err3 != nil {
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return nil, err3
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}
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var emptyByteArray []byte
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crypto.EncodeValues(&emptyByteArray, crypto.SequenceOne)
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crypto.EncodeValues(&emptyByteArray, crypto.SequenceTwo)
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var copiedByteArray []byte
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copiedByteArray = crypto.AppendByteSequence(copiedByteArray, emptyByteArray, uncompressedPublicKey)
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for _, value := range uncompressedPublicKey {
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copiedByteArray = crypto.HelperAppendBytes(copiedByteArray, value)
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}
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var encryptedKeys []byte
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encryptedKeys = crypto.AppendBytes(encryptedKeys, copiedByteArray[0:])
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return encryptedKeys, nil
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}
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