Move src/core/lib/tsi --> src/core/tsi
diff --git a/BUILD b/BUILD
index d659848..f6187e0 100644
--- a/BUILD
+++ b/BUILD
@@ -1128,16 +1128,16 @@
 grpc_cc_library(
     name = "tsi",
     srcs = [
-        "src/core/lib/tsi/fake_transport_security.c",
-        "src/core/lib/tsi/ssl_transport_security.c",
-        "src/core/lib/tsi/transport_security.c",
+        "src/core/tsi/fake_transport_security.c",
+        "src/core/tsi/ssl_transport_security.c",
+        "src/core/tsi/transport_security.c",
     ],
     hdrs = [
-        "src/core/lib/tsi/fake_transport_security.h",
-        "src/core/lib/tsi/ssl_transport_security.h",
-        "src/core/lib/tsi/ssl_types.h",
-        "src/core/lib/tsi/transport_security.h",
-        "src/core/lib/tsi/transport_security_interface.h",
+        "src/core/tsi/fake_transport_security.h",
+        "src/core/tsi/ssl_transport_security.h",
+        "src/core/tsi/ssl_types.h",
+        "src/core/tsi/transport_security.h",
+        "src/core/tsi/transport_security_interface.h",
     ],
     external_deps = [
         "libssl",
diff --git a/CMakeLists.txt b/CMakeLists.txt
index f54e78b..7b8e49e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1078,9 +1078,9 @@
   src/core/lib/security/transport/tsi_error.c
   src/core/lib/security/util/json_util.c
   src/core/lib/surface/init_secure.c
-  src/core/lib/tsi/fake_transport_security.c
-  src/core/lib/tsi/ssl_transport_security.c
-  src/core/lib/tsi/transport_security.c
+  src/core/tsi/fake_transport_security.c
+  src/core/tsi/ssl_transport_security.c
+  src/core/tsi/transport_security.c
   src/core/ext/transport/chttp2/server/chttp2_server.c
   src/core/ext/transport/chttp2/client/secure/secure_channel_create.c
   src/core/ext/client_channel/channel_connectivity.c
@@ -1422,9 +1422,9 @@
   src/core/lib/security/transport/tsi_error.c
   src/core/lib/security/util/json_util.c
   src/core/lib/surface/init_secure.c
-  src/core/lib/tsi/fake_transport_security.c
-  src/core/lib/tsi/ssl_transport_security.c
-  src/core/lib/tsi/transport_security.c
+  src/core/tsi/fake_transport_security.c
+  src/core/tsi/ssl_transport_security.c
+  src/core/tsi/transport_security.c
   src/core/ext/transport/chttp2/client/chttp2_connector.c
   src/core/ext/load_reporting/load_reporting.c
   src/core/ext/load_reporting/load_reporting_filter.c
diff --git a/Makefile b/Makefile
index bfc43aa..4251604 100644
--- a/Makefile
+++ b/Makefile
@@ -2972,9 +2972,9 @@
     src/core/lib/security/transport/tsi_error.c \
     src/core/lib/security/util/json_util.c \
     src/core/lib/surface/init_secure.c \
-    src/core/lib/tsi/fake_transport_security.c \
-    src/core/lib/tsi/ssl_transport_security.c \
-    src/core/lib/tsi/transport_security.c \
+    src/core/tsi/fake_transport_security.c \
+    src/core/tsi/ssl_transport_security.c \
+    src/core/tsi/transport_security.c \
     src/core/ext/transport/chttp2/server/chttp2_server.c \
     src/core/ext/transport/chttp2/client/secure/secure_channel_create.c \
     src/core/ext/client_channel/channel_connectivity.c \
@@ -3314,9 +3314,9 @@
     src/core/lib/security/transport/tsi_error.c \
     src/core/lib/security/util/json_util.c \
     src/core/lib/surface/init_secure.c \
-    src/core/lib/tsi/fake_transport_security.c \
-    src/core/lib/tsi/ssl_transport_security.c \
-    src/core/lib/tsi/transport_security.c \
+    src/core/tsi/fake_transport_security.c \
+    src/core/tsi/ssl_transport_security.c \
+    src/core/tsi/transport_security.c \
     src/core/ext/transport/chttp2/client/chttp2_connector.c \
     src/core/ext/load_reporting/load_reporting.c \
     src/core/ext/load_reporting/load_reporting_filter.c \
@@ -18807,11 +18807,11 @@
 src/core/lib/security/transport/tsi_error.c: $(OPENSSL_DEP)
 src/core/lib/security/util/json_util.c: $(OPENSSL_DEP)
 src/core/lib/surface/init_secure.c: $(OPENSSL_DEP)
-src/core/lib/tsi/fake_transport_security.c: $(OPENSSL_DEP)
-src/core/lib/tsi/ssl_transport_security.c: $(OPENSSL_DEP)
-src/core/lib/tsi/transport_security.c: $(OPENSSL_DEP)
 src/core/plugin_registry/grpc_cronet_plugin_registry.c: $(OPENSSL_DEP)
 src/core/plugin_registry/grpc_plugin_registry.c: $(OPENSSL_DEP)
+src/core/tsi/fake_transport_security.c: $(OPENSSL_DEP)
+src/core/tsi/ssl_transport_security.c: $(OPENSSL_DEP)
+src/core/tsi/transport_security.c: $(OPENSSL_DEP)
 src/cpp/client/cronet_credentials.cc: $(OPENSSL_DEP)
 src/cpp/client/secure_credentials.cc: $(OPENSSL_DEP)
 src/cpp/common/auth_property_iterator.cc: $(OPENSSL_DEP)
diff --git a/binding.gyp b/binding.gyp
index b91f5f6..f1cef60 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -785,9 +785,9 @@
         'src/core/lib/security/transport/tsi_error.c',
         'src/core/lib/security/util/json_util.c',
         'src/core/lib/surface/init_secure.c',
-        'src/core/lib/tsi/fake_transport_security.c',
-        'src/core/lib/tsi/ssl_transport_security.c',
-        'src/core/lib/tsi/transport_security.c',
+        'src/core/tsi/fake_transport_security.c',
+        'src/core/tsi/ssl_transport_security.c',
+        'src/core/tsi/transport_security.c',
         'src/core/ext/transport/chttp2/server/chttp2_server.c',
         'src/core/ext/transport/chttp2/client/secure/secure_channel_create.c',
         'src/core/ext/client_channel/channel_connectivity.c',
diff --git a/build.yaml b/build.yaml
index 6e590f4..6a89b71 100644
--- a/build.yaml
+++ b/build.yaml
@@ -770,15 +770,15 @@
   - third_party/nanopb/pb_encode.c
 - name: tsi
   headers:
-  - src/core/lib/tsi/fake_transport_security.h
-  - src/core/lib/tsi/ssl_transport_security.h
-  - src/core/lib/tsi/ssl_types.h
-  - src/core/lib/tsi/transport_security.h
-  - src/core/lib/tsi/transport_security_interface.h
+  - src/core/tsi/fake_transport_security.h
+  - src/core/tsi/ssl_transport_security.h
+  - src/core/tsi/ssl_types.h
+  - src/core/tsi/transport_security.h
+  - src/core/tsi/transport_security_interface.h
   src:
-  - src/core/lib/tsi/fake_transport_security.c
-  - src/core/lib/tsi/ssl_transport_security.c
-  - src/core/lib/tsi/transport_security.c
+  - src/core/tsi/fake_transport_security.c
+  - src/core/tsi/ssl_transport_security.c
+  - src/core/tsi/transport_security.c
   deps:
   - gpr
   secure: true
diff --git a/config.m4 b/config.m4
index b6f0bff..6ce7d70 100644
--- a/config.m4
+++ b/config.m4
@@ -253,9 +253,9 @@
     src/core/lib/security/transport/tsi_error.c \
     src/core/lib/security/util/json_util.c \
     src/core/lib/surface/init_secure.c \
-    src/core/lib/tsi/fake_transport_security.c \
-    src/core/lib/tsi/ssl_transport_security.c \
-    src/core/lib/tsi/transport_security.c \
+    src/core/tsi/fake_transport_security.c \
+    src/core/tsi/ssl_transport_security.c \
+    src/core/tsi/transport_security.c \
     src/core/ext/transport/chttp2/server/chttp2_server.c \
     src/core/ext/transport/chttp2/client/secure/secure_channel_create.c \
     src/core/ext/client_channel/channel_connectivity.c \
@@ -668,8 +668,8 @@
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/support)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/surface)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/transport)
-  PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/tsi)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/plugin_registry)
+  PHP_ADD_BUILD_DIR($ext_builddir/src/core/tsi)
   PHP_ADD_BUILD_DIR($ext_builddir/third_party/boringssl/crypto)
   PHP_ADD_BUILD_DIR($ext_builddir/third_party/boringssl/crypto/aes)
   PHP_ADD_BUILD_DIR($ext_builddir/third_party/boringssl/crypto/asn1)
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index 8ea9e5f..97bd3c2 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -404,11 +404,11 @@
                       'src/core/lib/security/transport/tsi_error.h',
                       'src/core/lib/security/util/b64.h',
                       'src/core/lib/security/util/json_util.h',
-                      'src/core/lib/tsi/fake_transport_security.h',
-                      'src/core/lib/tsi/ssl_transport_security.h',
-                      'src/core/lib/tsi/ssl_types.h',
-                      'src/core/lib/tsi/transport_security.h',
-                      'src/core/lib/tsi/transport_security_interface.h',
+                      'src/core/tsi/fake_transport_security.h',
+                      'src/core/tsi/ssl_transport_security.h',
+                      'src/core/tsi/ssl_types.h',
+                      'src/core/tsi/transport_security.h',
+                      'src/core/tsi/transport_security_interface.h',
                       'src/core/ext/transport/chttp2/server/chttp2_server.h',
                       'src/core/ext/client_channel/client_channel.h',
                       'src/core/ext/client_channel/client_channel_factory.h',
@@ -628,9 +628,9 @@
                       'src/core/lib/security/transport/tsi_error.c',
                       'src/core/lib/security/util/json_util.c',
                       'src/core/lib/surface/init_secure.c',
-                      'src/core/lib/tsi/fake_transport_security.c',
-                      'src/core/lib/tsi/ssl_transport_security.c',
-                      'src/core/lib/tsi/transport_security.c',
+                      'src/core/tsi/fake_transport_security.c',
+                      'src/core/tsi/ssl_transport_security.c',
+                      'src/core/tsi/transport_security.c',
                       'src/core/ext/transport/chttp2/server/chttp2_server.c',
                       'src/core/ext/transport/chttp2/client/secure/secure_channel_create.c',
                       'src/core/ext/client_channel/channel_connectivity.c',
@@ -852,11 +852,11 @@
                               'src/core/lib/security/transport/tsi_error.h',
                               'src/core/lib/security/util/b64.h',
                               'src/core/lib/security/util/json_util.h',
-                              'src/core/lib/tsi/fake_transport_security.h',
-                              'src/core/lib/tsi/ssl_transport_security.h',
-                              'src/core/lib/tsi/ssl_types.h',
-                              'src/core/lib/tsi/transport_security.h',
-                              'src/core/lib/tsi/transport_security_interface.h',
+                              'src/core/tsi/fake_transport_security.h',
+                              'src/core/tsi/ssl_transport_security.h',
+                              'src/core/tsi/ssl_types.h',
+                              'src/core/tsi/transport_security.h',
+                              'src/core/tsi/transport_security_interface.h',
                               'src/core/ext/transport/chttp2/server/chttp2_server.h',
                               'src/core/ext/client_channel/client_channel.h',
                               'src/core/ext/client_channel/client_channel_factory.h',
diff --git a/grpc.gemspec b/grpc.gemspec
index 06da332..cb51da1 100755
--- a/grpc.gemspec
+++ b/grpc.gemspec
@@ -320,11 +320,11 @@
   s.files += %w( src/core/lib/security/transport/tsi_error.h )
   s.files += %w( src/core/lib/security/util/b64.h )
   s.files += %w( src/core/lib/security/util/json_util.h )
-  s.files += %w( src/core/lib/tsi/fake_transport_security.h )
-  s.files += %w( src/core/lib/tsi/ssl_transport_security.h )
-  s.files += %w( src/core/lib/tsi/ssl_types.h )
-  s.files += %w( src/core/lib/tsi/transport_security.h )
-  s.files += %w( src/core/lib/tsi/transport_security_interface.h )
+  s.files += %w( src/core/tsi/fake_transport_security.h )
+  s.files += %w( src/core/tsi/ssl_transport_security.h )
+  s.files += %w( src/core/tsi/ssl_types.h )
+  s.files += %w( src/core/tsi/transport_security.h )
+  s.files += %w( src/core/tsi/transport_security_interface.h )
   s.files += %w( src/core/ext/transport/chttp2/server/chttp2_server.h )
   s.files += %w( src/core/ext/client_channel/client_channel.h )
   s.files += %w( src/core/ext/client_channel/client_channel_factory.h )
@@ -544,9 +544,9 @@
   s.files += %w( src/core/lib/security/transport/tsi_error.c )
   s.files += %w( src/core/lib/security/util/json_util.c )
   s.files += %w( src/core/lib/surface/init_secure.c )
-  s.files += %w( src/core/lib/tsi/fake_transport_security.c )
-  s.files += %w( src/core/lib/tsi/ssl_transport_security.c )
-  s.files += %w( src/core/lib/tsi/transport_security.c )
+  s.files += %w( src/core/tsi/fake_transport_security.c )
+  s.files += %w( src/core/tsi/ssl_transport_security.c )
+  s.files += %w( src/core/tsi/transport_security.c )
   s.files += %w( src/core/ext/transport/chttp2/server/chttp2_server.c )
   s.files += %w( src/core/ext/transport/chttp2/client/secure/secure_channel_create.c )
   s.files += %w( src/core/ext/client_channel/channel_connectivity.c )
diff --git a/package.xml b/package.xml
index 5d58584..afac180 100644
--- a/package.xml
+++ b/package.xml
@@ -329,11 +329,11 @@
     <file baseinstalldir="/" name="src/core/lib/security/transport/tsi_error.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/security/util/b64.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/security/util/json_util.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/tsi/fake_transport_security.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/tsi/ssl_transport_security.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/tsi/ssl_types.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/tsi/transport_security.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/tsi/transport_security_interface.h" role="src" />
+    <file baseinstalldir="/" name="src/core/tsi/fake_transport_security.h" role="src" />
+    <file baseinstalldir="/" name="src/core/tsi/ssl_transport_security.h" role="src" />
+    <file baseinstalldir="/" name="src/core/tsi/ssl_types.h" role="src" />
+    <file baseinstalldir="/" name="src/core/tsi/transport_security.h" role="src" />
+    <file baseinstalldir="/" name="src/core/tsi/transport_security_interface.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/transport/chttp2/server/chttp2_server.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/client_channel/client_channel.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/client_channel/client_channel_factory.h" role="src" />
@@ -553,9 +553,9 @@
     <file baseinstalldir="/" name="src/core/lib/security/transport/tsi_error.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/security/util/json_util.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/init_secure.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/tsi/fake_transport_security.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/tsi/ssl_transport_security.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/tsi/transport_security.c" role="src" />
+    <file baseinstalldir="/" name="src/core/tsi/fake_transport_security.c" role="src" />
+    <file baseinstalldir="/" name="src/core/tsi/ssl_transport_security.c" role="src" />
+    <file baseinstalldir="/" name="src/core/tsi/transport_security.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/transport/chttp2/server/chttp2_server.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/transport/chttp2/client/secure/secure_channel_create.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/client_channel/channel_connectivity.c" role="src" />
diff --git a/src/core/lib/tsi/README.md b/src/core/tsi/README.md
similarity index 100%
rename from src/core/lib/tsi/README.md
rename to src/core/tsi/README.md
diff --git a/src/core/lib/tsi/fake_transport_security.c b/src/core/tsi/fake_transport_security.c
similarity index 100%
rename from src/core/lib/tsi/fake_transport_security.c
rename to src/core/tsi/fake_transport_security.c
diff --git a/src/core/lib/tsi/fake_transport_security.h b/src/core/tsi/fake_transport_security.h
similarity index 100%
rename from src/core/lib/tsi/fake_transport_security.h
rename to src/core/tsi/fake_transport_security.h
diff --git a/src/core/lib/tsi/ssl_transport_security.c b/src/core/tsi/ssl_transport_security.c
similarity index 100%
rename from src/core/lib/tsi/ssl_transport_security.c
rename to src/core/tsi/ssl_transport_security.c
diff --git a/src/core/lib/tsi/ssl_transport_security.h b/src/core/tsi/ssl_transport_security.h
similarity index 100%
rename from src/core/lib/tsi/ssl_transport_security.h
rename to src/core/tsi/ssl_transport_security.h
diff --git a/src/core/lib/tsi/ssl_types.h b/src/core/tsi/ssl_types.h
similarity index 100%
rename from src/core/lib/tsi/ssl_types.h
rename to src/core/tsi/ssl_types.h
diff --git a/src/core/lib/tsi/test_creds/BUILD b/src/core/tsi/test_creds/BUILD
similarity index 100%
rename from src/core/lib/tsi/test_creds/BUILD
rename to src/core/tsi/test_creds/BUILD
diff --git a/src/core/lib/tsi/test_creds/README b/src/core/tsi/test_creds/README
similarity index 100%
rename from src/core/lib/tsi/test_creds/README
rename to src/core/tsi/test_creds/README
diff --git a/src/core/lib/tsi/test_creds/badclient.key b/src/core/tsi/test_creds/badclient.key
similarity index 100%
rename from src/core/lib/tsi/test_creds/badclient.key
rename to src/core/tsi/test_creds/badclient.key
diff --git a/src/core/lib/tsi/test_creds/badclient.pem b/src/core/tsi/test_creds/badclient.pem
similarity index 100%
rename from src/core/lib/tsi/test_creds/badclient.pem
rename to src/core/tsi/test_creds/badclient.pem
diff --git a/src/core/lib/tsi/test_creds/badserver.key b/src/core/tsi/test_creds/badserver.key
similarity index 100%
rename from src/core/lib/tsi/test_creds/badserver.key
rename to src/core/tsi/test_creds/badserver.key
diff --git a/src/core/lib/tsi/test_creds/badserver.pem b/src/core/tsi/test_creds/badserver.pem
similarity index 100%
rename from src/core/lib/tsi/test_creds/badserver.pem
rename to src/core/tsi/test_creds/badserver.pem
diff --git a/src/core/lib/tsi/test_creds/ca-openssl.cnf b/src/core/tsi/test_creds/ca-openssl.cnf
similarity index 100%
rename from src/core/lib/tsi/test_creds/ca-openssl.cnf
rename to src/core/tsi/test_creds/ca-openssl.cnf
diff --git a/src/core/lib/tsi/test_creds/ca.key b/src/core/tsi/test_creds/ca.key
similarity index 100%
rename from src/core/lib/tsi/test_creds/ca.key
rename to src/core/tsi/test_creds/ca.key
diff --git a/src/core/lib/tsi/test_creds/ca.pem b/src/core/tsi/test_creds/ca.pem
similarity index 100%
rename from src/core/lib/tsi/test_creds/ca.pem
rename to src/core/tsi/test_creds/ca.pem
diff --git a/src/core/lib/tsi/test_creds/client.key b/src/core/tsi/test_creds/client.key
similarity index 100%
rename from src/core/lib/tsi/test_creds/client.key
rename to src/core/tsi/test_creds/client.key
diff --git a/src/core/lib/tsi/test_creds/client.pem b/src/core/tsi/test_creds/client.pem
similarity index 100%
rename from src/core/lib/tsi/test_creds/client.pem
rename to src/core/tsi/test_creds/client.pem
diff --git a/src/core/lib/tsi/test_creds/server0.key b/src/core/tsi/test_creds/server0.key
similarity index 100%
rename from src/core/lib/tsi/test_creds/server0.key
rename to src/core/tsi/test_creds/server0.key
diff --git a/src/core/lib/tsi/test_creds/server0.pem b/src/core/tsi/test_creds/server0.pem
similarity index 100%
rename from src/core/lib/tsi/test_creds/server0.pem
rename to src/core/tsi/test_creds/server0.pem
diff --git a/src/core/lib/tsi/test_creds/server1-openssl.cnf b/src/core/tsi/test_creds/server1-openssl.cnf
similarity index 100%
rename from src/core/lib/tsi/test_creds/server1-openssl.cnf
rename to src/core/tsi/test_creds/server1-openssl.cnf
diff --git a/src/core/lib/tsi/test_creds/server1.key b/src/core/tsi/test_creds/server1.key
similarity index 100%
rename from src/core/lib/tsi/test_creds/server1.key
rename to src/core/tsi/test_creds/server1.key
diff --git a/src/core/lib/tsi/test_creds/server1.pem b/src/core/tsi/test_creds/server1.pem
similarity index 100%
rename from src/core/lib/tsi/test_creds/server1.pem
rename to src/core/tsi/test_creds/server1.pem
diff --git a/src/core/lib/tsi/transport_security.c b/src/core/tsi/transport_security.c
similarity index 100%
rename from src/core/lib/tsi/transport_security.c
rename to src/core/tsi/transport_security.c
diff --git a/src/core/lib/tsi/transport_security.h b/src/core/tsi/transport_security.h
similarity index 100%
rename from src/core/lib/tsi/transport_security.h
rename to src/core/tsi/transport_security.h
diff --git a/src/core/lib/tsi/transport_security_interface.h b/src/core/tsi/transport_security_interface.h
similarity index 100%
rename from src/core/lib/tsi/transport_security_interface.h
rename to src/core/tsi/transport_security_interface.h
diff --git a/src/python/grpcio/grpc_core_dependencies.py b/src/python/grpcio/grpc_core_dependencies.py
index 258c65c..970c70b 100644
--- a/src/python/grpcio/grpc_core_dependencies.py
+++ b/src/python/grpcio/grpc_core_dependencies.py
@@ -247,9 +247,9 @@
   'src/core/lib/security/transport/tsi_error.c',
   'src/core/lib/security/util/json_util.c',
   'src/core/lib/surface/init_secure.c',
-  'src/core/lib/tsi/fake_transport_security.c',
-  'src/core/lib/tsi/ssl_transport_security.c',
-  'src/core/lib/tsi/transport_security.c',
+  'src/core/tsi/fake_transport_security.c',
+  'src/core/tsi/ssl_transport_security.c',
+  'src/core/tsi/transport_security.c',
   'src/core/ext/transport/chttp2/server/chttp2_server.c',
   'src/core/ext/transport/chttp2/client/secure/secure_channel_create.c',
   'src/core/ext/client_channel/channel_connectivity.c',
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index d09ddaa..a15b624 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -1359,16 +1359,16 @@
 src/core/lib/transport/transport.h \
 src/core/lib/transport/transport_impl.h \
 src/core/lib/transport/transport_op_string.c \
-src/core/lib/tsi/README.md \
-src/core/lib/tsi/fake_transport_security.c \
-src/core/lib/tsi/fake_transport_security.h \
-src/core/lib/tsi/ssl_transport_security.c \
-src/core/lib/tsi/ssl_transport_security.h \
-src/core/lib/tsi/ssl_types.h \
-src/core/lib/tsi/transport_security.c \
-src/core/lib/tsi/transport_security.h \
-src/core/lib/tsi/transport_security_interface.h \
 src/core/plugin_registry/grpc_plugin_registry.c \
+src/core/tsi/README.md \
+src/core/tsi/fake_transport_security.c \
+src/core/tsi/fake_transport_security.h \
+src/core/tsi/ssl_transport_security.c \
+src/core/tsi/ssl_transport_security.h \
+src/core/tsi/ssl_types.h \
+src/core/tsi/transport_security.c \
+src/core/tsi/transport_security.h \
+src/core/tsi/transport_security_interface.h \
 third_party/nanopb/pb.h \
 third_party/nanopb/pb_common.c \
 third_party/nanopb/pb_common.h \
diff --git a/tools/run_tests/generated/sources_and_headers.json b/tools/run_tests/generated/sources_and_headers.json
index fd12ea5..446a27e 100644
--- a/tools/run_tests/generated/sources_and_headers.json
+++ b/tools/run_tests/generated/sources_and_headers.json
@@ -8517,24 +8517,24 @@
       "gpr"
     ], 
     "headers": [
-      "src/core/lib/tsi/fake_transport_security.h", 
-      "src/core/lib/tsi/ssl_transport_security.h", 
-      "src/core/lib/tsi/ssl_types.h", 
-      "src/core/lib/tsi/transport_security.h", 
-      "src/core/lib/tsi/transport_security_interface.h"
+      "src/core/tsi/fake_transport_security.h", 
+      "src/core/tsi/ssl_transport_security.h", 
+      "src/core/tsi/ssl_types.h", 
+      "src/core/tsi/transport_security.h", 
+      "src/core/tsi/transport_security_interface.h"
     ], 
     "is_filegroup": true, 
     "language": "c", 
     "name": "tsi", 
     "src": [
-      "src/core/lib/tsi/fake_transport_security.c", 
-      "src/core/lib/tsi/fake_transport_security.h", 
-      "src/core/lib/tsi/ssl_transport_security.c", 
-      "src/core/lib/tsi/ssl_transport_security.h", 
-      "src/core/lib/tsi/ssl_types.h", 
-      "src/core/lib/tsi/transport_security.c", 
-      "src/core/lib/tsi/transport_security.h", 
-      "src/core/lib/tsi/transport_security_interface.h"
+      "src/core/tsi/fake_transport_security.c", 
+      "src/core/tsi/fake_transport_security.h", 
+      "src/core/tsi/ssl_transport_security.c", 
+      "src/core/tsi/ssl_transport_security.h", 
+      "src/core/tsi/ssl_types.h", 
+      "src/core/tsi/transport_security.c", 
+      "src/core/tsi/transport_security.h", 
+      "src/core/tsi/transport_security_interface.h"
     ], 
     "third_party": false, 
     "type": "filegroup"
diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj b/vsprojects/vcxproj/grpc/grpc.vcxproj
index 7abff21..22e61e7 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj
@@ -448,11 +448,11 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\transport\tsi_error.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\util\b64.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\util\json_util.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\fake_transport_security.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\ssl_transport_security.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\ssl_types.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\transport_security.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\transport_security_interface.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\fake_transport_security.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_types.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security_interface.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\server\chttp2_server.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\client_channel\client_channel.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\client_channel\client_channel_factory.h" />
@@ -845,11 +845,11 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\init_secure.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\tsi\fake_transport_security.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\fake_transport_security.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\tsi\ssl_transport_security.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\tsi\transport_security.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\transport_security.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\server\chttp2_server.c">
     </ClCompile>
diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
index aa3e5a7..95e9614 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
@@ -514,14 +514,14 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\init_secure.c">
       <Filter>src\core\lib\surface</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\tsi\fake_transport_security.c">
-      <Filter>src\core\lib\tsi</Filter>
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\fake_transport_security.c">
+      <Filter>src\core\tsi</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\tsi\ssl_transport_security.c">
-      <Filter>src\core\lib\tsi</Filter>
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.c">
+      <Filter>src\core\tsi</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\tsi\transport_security.c">
-      <Filter>src\core\lib\tsi</Filter>
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\transport_security.c">
+      <Filter>src\core\tsi</Filter>
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\server\chttp2_server.c">
       <Filter>src\core\ext\transport\chttp2\server</Filter>
@@ -1238,20 +1238,20 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\util\json_util.h">
       <Filter>src\core\lib\security\util</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\fake_transport_security.h">
-      <Filter>src\core\lib\tsi</Filter>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\fake_transport_security.h">
+      <Filter>src\core\tsi</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\ssl_transport_security.h">
-      <Filter>src\core\lib\tsi</Filter>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.h">
+      <Filter>src\core\tsi</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\ssl_types.h">
-      <Filter>src\core\lib\tsi</Filter>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_types.h">
+      <Filter>src\core\tsi</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\transport_security.h">
-      <Filter>src\core\lib\tsi</Filter>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security.h">
+      <Filter>src\core\tsi</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\transport_security_interface.h">
-      <Filter>src\core\lib\tsi</Filter>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security_interface.h">
+      <Filter>src\core\tsi</Filter>
     </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\server\chttp2_server.h">
       <Filter>src\core\ext\transport\chttp2\server</Filter>
@@ -1571,12 +1571,12 @@
     <Filter Include="src\core\lib\transport">
       <UniqueIdentifier>{e9d0d3fc-c100-f3e6-89b8-649f241155bf}</UniqueIdentifier>
     </Filter>
-    <Filter Include="src\core\lib\tsi">
-      <UniqueIdentifier>{95ad2811-c8d0-7a42-2a73-baf03fcbf699}</UniqueIdentifier>
-    </Filter>
     <Filter Include="src\core\plugin_registry">
       <UniqueIdentifier>{02bec99b-ff39-88d7-9dea-e0ff9f4a2701}</UniqueIdentifier>
     </Filter>
+    <Filter Include="src\core\tsi">
+      <UniqueIdentifier>{0b0f9ab1-efa4-7f03-e446-6fb9b5227e84}</UniqueIdentifier>
+    </Filter>
     <Filter Include="third_party">
       <UniqueIdentifier>{aaab30a4-2a15-732e-c141-3fbc0f0f5a7a}</UniqueIdentifier>
     </Filter>