diff --git a/Telegram/SourceFiles/calls/group/calls_group_call.cpp b/Telegram/SourceFiles/calls/group/calls_group_call.cpp
index 2785652891..f086e5416c 100644
--- a/Telegram/SourceFiles/calls/group/calls_group_call.cpp
+++ b/Telegram/SourceFiles/calls/group/calls_group_call.cpp
@@ -2547,6 +2547,14 @@ bool GroupCall::tryCreateController() {
 			}
 		});
 	};
+	auto e2eEncryptDecrypt = Fn<std::vector<uint8_t>(
+		const std::vector<uint8_t>&,
+		bool)>();
+	if (_e2e) {
+		e2eEncryptDecrypt = [e2e = _e2e](const std::vector<uint8_t> &data, bool encrypt) {
+			return encrypt ? e2e->encrypt(data) : e2e->decrypt(data);
+		};
+	}
 
 	tgcalls::GroupInstanceDescriptor descriptor = {
 		.threads = tgcalls::StaticThreads::getThreads(),
@@ -2633,6 +2641,7 @@ bool GroupCall::tryCreateController() {
 			});
 			return result;
 		},
+		.e2eEncryptDecrypt = e2eEncryptDecrypt,
 	};
 	if (Logs::DebugEnabled()) {
 		auto callLogFolder = cWorkingDir() + u"DebugLogs"_q;
diff --git a/Telegram/SourceFiles/tde2e/tde2e_api.cpp b/Telegram/SourceFiles/tde2e/tde2e_api.cpp
index 04ae7340ac..4c01426925 100644
--- a/Telegram/SourceFiles/tde2e/tde2e_api.cpp
+++ b/Telegram/SourceFiles/tde2e/tde2e_api.cpp
@@ -85,4 +85,36 @@ Call::ApplyResult Call::apply(const Block &block) {
 		: ApplyResult::BlockSkipped;
 }
 
+std::vector<uint8_t> Call::encrypt(const std::vector<uint8_t> &data) const {
+	const auto result = tde2e_api::call_encrypt(
+		std::int64_t(_id.v),
+		std::string_view{
+			reinterpret_cast<const char*>(data.data()),
+			data.size(),
+		});
+	if (!result.is_ok()) {
+		return {};
+	}
+	const auto &value = result.value();
+	const auto start = reinterpret_cast<const uint8_t*>(value.data());
+	const auto end = start + value.size();
+	return std::vector<uint8_t>{ start, end };
+}
+
+std::vector<uint8_t> Call::decrypt(const std::vector<uint8_t> &data) const {
+	const auto result = tde2e_api::call_decrypt(
+		std::int64_t(_id.v),
+		std::string_view{
+			reinterpret_cast<const char*>(data.data()),
+			data.size(),
+		});
+	if (!result.is_ok()) {
+		return {};
+	}
+	const auto &value = result.value();
+	const auto start = reinterpret_cast<const uint8_t*>(value.data());
+	const auto end = start + value.size();
+	return std::vector<uint8_t>{ start, end };
+}
+
 } // namespace TdE2E
diff --git a/Telegram/SourceFiles/tde2e/tde2e_api.h b/Telegram/SourceFiles/tde2e/tde2e_api.h
index 36a634576d..ae8d70279e 100644
--- a/Telegram/SourceFiles/tde2e/tde2e_api.h
+++ b/Telegram/SourceFiles/tde2e/tde2e_api.h
@@ -55,6 +55,11 @@ public:
 	};
 	[[nodiscard]] ApplyResult apply(const Block &block);
 
+	[[nodiscard]] std::vector<uint8_t> encrypt(
+		const std::vector<uint8_t> &data) const;
+	[[nodiscard]] std::vector<uint8_t> decrypt(
+		const std::vector<uint8_t> &data) const;
+
 private:
 	CallId _id;
 	UserId _myUserId;