Rename security handshaker files.
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index d645307..14838da 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -376,9 +376,9 @@
                       'src/core/lib/security/credentials/plugin/plugin_credentials.h',
                       'src/core/lib/security/credentials/ssl/ssl_credentials.h',
                       'src/core/lib/security/transport/auth_filters.h',
-                      'src/core/lib/security/transport/handshake.h',
                       'src/core/lib/security/transport/secure_endpoint.h',
                       'src/core/lib/security/transport/security_connector.h',
+                      'src/core/lib/security/transport/security_handshaker.h',
                       'src/core/lib/security/transport/tsi_error.h',
                       'src/core/lib/security/util/b64.h',
                       'src/core/lib/security/util/json_util.h',
@@ -575,9 +575,9 @@
                       'src/core/lib/security/credentials/plugin/plugin_credentials.c',
                       'src/core/lib/security/credentials/ssl/ssl_credentials.c',
                       'src/core/lib/security/transport/client_auth_filter.c',
-                      'src/core/lib/security/transport/handshake.c',
                       'src/core/lib/security/transport/secure_endpoint.c',
                       'src/core/lib/security/transport/security_connector.c',
+                      'src/core/lib/security/transport/security_handshaker.c',
                       'src/core/lib/security/transport/server_auth_filter.c',
                       'src/core/lib/security/transport/tsi_error.c',
                       'src/core/lib/security/util/b64.c',
@@ -781,9 +781,9 @@
                               'src/core/lib/security/credentials/plugin/plugin_credentials.h',
                               'src/core/lib/security/credentials/ssl/ssl_credentials.h',
                               'src/core/lib/security/transport/auth_filters.h',
-                              'src/core/lib/security/transport/handshake.h',
                               'src/core/lib/security/transport/secure_endpoint.h',
                               'src/core/lib/security/transport/security_connector.h',
+                              'src/core/lib/security/transport/security_handshaker.h',
                               'src/core/lib/security/transport/tsi_error.h',
                               'src/core/lib/security/util/b64.h',
                               'src/core/lib/security/util/json_util.h',