/
vendored_keys.go
58 lines (51 loc) · 1.33 KB
/
vendored_keys.go
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package mtproto
import (
// For embedding public keys.
_ "embed"
"sync"
"github.com/gotd/td/internal/crypto"
"github.com/gotd/td/internal/exchange"
)
var (
// publicKeys is byte blob of new keys added for PQInnerData encryption (key exchange).
//
// See https://github.com/telegramdesktop/tdesktop/commit/95a7ce4622dc24717dc5b95fc99599dddfd4ff6c.
//
// See https://github.com/tdlib/td/commit/e9e24282378fcdb3a3ce020bee4253b65ac98213.
//go:embed _data/public_keys.pem
publicKeys []byte
parsedKeys struct {
Keys []exchange.PublicKey
Once sync.Once
}
)
//nolint:gochecknoinits
func init() {
makePublicKeys := func(data []byte) ([]exchange.PublicKey, error) {
rsaKeys, err := crypto.ParseRSAPublicKeys(data)
if err != nil {
return nil, err
}
keys := make([]exchange.PublicKey, 0, len(rsaKeys))
for _, key := range rsaKeys {
keys = append(keys, exchange.PublicKey{
RSA: key,
})
}
return keys, nil
}
parsedKeys.Once.Do(func() {
keys, err := makePublicKeys(publicKeys)
if err != nil {
panic(err)
}
parsedKeys.Keys = append(parsedKeys.Keys, keys...)
})
}
// vendoredKeys parses vendored file _data/public_keys.pem as list of
// PEM-encoded public RSA keys.
//
// Most recent key list can be found on https://my.telegram.org/apps.
func vendoredKeys() []exchange.PublicKey {
return parsedKeys.Keys
}