1 files changed, 89 insertions, 0 deletions
diff --git a/include/grpc/grpc_security.h b/include/grpc/grpc_security.h
index abc591fd75..e1975a8e09 100644
--- a/include/grpc/grpc_security.h
+++ b/include/grpc/grpc_security.h
@@ -100,6 +100,25 @@ GRPCAPI void grpc_auth_context_add_cstring_property(grpc_auth_context* ctx,
 GRPCAPI int grpc_auth_context_set_peer_identity_property_name(
     grpc_auth_context* ctx, const char* name);
 
+/** --- SSL Session Cache. ---
+
+    A SSL session cache object represents a way to cache client sessions
+    between connections. Only ticket-based resumption is supported. */
+
+typedef struct grpc_ssl_session_cache grpc_ssl_session_cache;
+
+/** Create LRU cache for client-side SSL sessions with the given capacity.
+    If capacity is < 1, a default capacity is used instead. */
+GRPCAPI grpc_ssl_session_cache* grpc_ssl_session_cache_create_lru(
+    size_t capacity);
+
+/** Destroy SSL session cache. */
+GRPCAPI void grpc_ssl_session_cache_destroy(grpc_ssl_session_cache* cache);
+
+/** Create a channel arg with the given cache object. */
+GRPCAPI grpc_arg
+grpc_ssl_session_cache_create_channel_arg(grpc_ssl_session_cache* cache);
+
 /** --- grpc_channel_credentials object. ---
 
    A channel credentials object represents a way to authenticate a client on a
@@ -469,6 +488,76 @@ typedef struct {
 GRPCAPI void grpc_server_credentials_set_auth_metadata_processor(
     grpc_server_credentials* creds, grpc_auth_metadata_processor processor);
 
+/** --- ALTS channel/server credentials --- **/
+
+/**
+ * Main interface for ALTS credentials options. The options will contain
+ * information that will be passed from grpc to TSI layer such as RPC protocol
+ * versions. ALTS client (channel) and server credentials will have their own
+ * implementation of this interface. The APIs listed in this header are
+ * thread-compatible. It is used for experimental purpose for now and subject
+ * to change.
+ */
+typedef struct grpc_alts_credentials_options grpc_alts_credentials_options;
+
+/**
+ * This method creates a grpc ALTS credentials client options instance.
+ * It is used for experimental purpose for now and subject to change.
+ */
+GRPCAPI grpc_alts_credentials_options*
+grpc_alts_credentials_client_options_create();
+
+/**
+ * This method creates a grpc ALTS credentials server options instance.
+ * It is used for experimental purpose for now and subject to change.
+ */
+GRPCAPI grpc_alts_credentials_options*
+grpc_alts_credentials_server_options_create();
+
+/**
+ * This method adds a target service account to grpc client's ALTS credentials
+ * options instance. It is used for experimental purpose for now and subject
+ * to change.
+ *
+ * - options: grpc ALTS credentials options instance.
+ * - service_account: service account of target endpoint.
+ */
+GRPCAPI void grpc_alts_credentials_client_options_add_target_service_account(
+    grpc_alts_credentials_options* options, const char* service_account);
+
+/**
+ * This method destroys a grpc_alts_credentials_options instance by
+ * de-allocating all of its occupied memory. It is used for experimental purpose
+ * for now and subject to change.
+ *
+ * - options: a grpc_alts_credentials_options instance that needs to be
+ *   destroyed.
+ */
+GRPCAPI void grpc_alts_credentials_options_destroy(
+    grpc_alts_credentials_options* options);
+
+/**
+ * This method creates an ALTS channel credential object. It is used for
+ * experimental purpose for now and subject to change.
+ *
+ * - options: grpc ALTS credentials options instance for client.
+ *
+ * It returns the created ALTS channel credential object.
+ */
+GRPCAPI grpc_channel_credentials* grpc_alts_credentials_create(
+    const grpc_alts_credentials_options* options);
+
+/**
+ * This method creates an ALTS server credential object. It is used for
+ * experimental purpose for now and subject to change.
+ *
+ * - options: grpc ALTS credentials options instance for server.
+ *
+ * It returns the created ALTS server credential object.
+ */
+GRPCAPI grpc_server_credentials* grpc_alts_server_credentials_create(
+    const grpc_alts_credentials_options* options);
+
 #ifdef __cplusplus
 }
 #endif