Parse e2e participant keys.

Telegram/SourceFiles/tde2e/tde2e_api.cpp

@@ -7,16 +7,25 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #include "tde2e/tde2e_api.h"
 
-#include "base/algorithm.h"
+#include "base/assertion.h"
 
 #include <tde2e/td/e2e/e2e_api.h>
 
 namespace TdE2E {
 
-QByteArray GeneratePrivateKey() {
-	const auto result = tde2e_api::key_generate_temporary_private_key();
+CallState CreateCallState() {
+	const auto id = tde2e_api::key_generate_temporary_private_key();
+	Assert(id.is_ok());
+	const auto key = tde2e_api::key_to_public_key(id.value());
+	Assert(key.is_ok());
 
-	return {};
+	auto result = CallState{
+		.myKeyId = PrivateKeyId{ .v = uint64(id.value()) },
+	};
+	Assert(key.value().size() == sizeof(result.myKey));
+	memcpy(&result.myKey, key.value().data(), 32);
+
+	return result;
 }
 
 } // namespace TdE2E

Telegram/SourceFiles/tde2e/tde2e_api.h

@@ -7,3 +7,31 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once
 
+#include "base/basic_types.h"
+
+namespace TdE2E {
+
+struct PrivateKeyId {
+	uint64 v = 0;
+};
+
+struct PublicKey {
+	uint64 a = 0;
+	uint64 b = 0;
+	uint64 c = 0;
+	uint64 d = 0;
+};
+
+struct ParticipantState {
+	uint64 id = 0;
+	PublicKey key;
+};
+
+struct CallState {
+	PrivateKeyId myKeyId;
+	PublicKey myKey;
+};
+
+[[nodiscard]] CallState CreateCallState();
+
+} // namespace TdE2E