diff --git a/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/OperationParameters.aidl b/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/OperationParameters.aidl
index f35fe45..017e51c 100644
--- a/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/OperationParameters.aidl
+++ b/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/OperationParameters.aidl
@@ -34,4 +34,5 @@
 package android.hardware.security.see.hwcrypto;
 union OperationParameters {
   android.hardware.security.see.hwcrypto.types.SymmetricAuthOperationParameters symmetricAuthCrypto;
+  android.hardware.security.see.hwcrypto.types.SymmetricOperationParameters symmetricCrypto;
 }
diff --git a/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/types/AesCipherMode.aidl b/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/types/AesCipherMode.aidl
new file mode 100644
index 0000000..e7501ff
--- /dev/null
+++ b/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/types/AesCipherMode.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.security.see.hwcrypto.types;
+union AesCipherMode {
+  android.hardware.security.see.hwcrypto.types.CipherModeParameters cbc;
+  android.hardware.security.see.hwcrypto.types.CipherModeParameters ctr;
+}
diff --git a/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/types/CipherModeParameters.aidl b/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/types/CipherModeParameters.aidl
new file mode 100644
index 0000000..7a77521
--- /dev/null
+++ b/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/types/CipherModeParameters.aidl
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.security.see.hwcrypto.types;
+parcelable CipherModeParameters {
+  byte[16] nonce;
+}
diff --git a/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/types/SymmetricCryptoParameters.aidl b/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/types/SymmetricCryptoParameters.aidl
new file mode 100644
index 0000000..cc93094
--- /dev/null
+++ b/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/types/SymmetricCryptoParameters.aidl
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.security.see.hwcrypto.types;
+union SymmetricCryptoParameters {
+  android.hardware.security.see.hwcrypto.types.AesCipherMode aes;
+}
diff --git a/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/types/SymmetricOperationParameters.aidl b/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/types/SymmetricOperationParameters.aidl
new file mode 100644
index 0000000..769833b
--- /dev/null
+++ b/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/types/SymmetricOperationParameters.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.security.see.hwcrypto.types;
+parcelable SymmetricOperationParameters {
+  android.hardware.security.see.hwcrypto.IOpaqueKey key;
+  android.hardware.security.see.hwcrypto.types.SymmetricOperation direction;
+  android.hardware.security.see.hwcrypto.types.SymmetricCryptoParameters parameters;
+}
diff --git a/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/OperationParameters.aidl b/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/OperationParameters.aidl
index bf1f055..9e2fc6c 100644
--- a/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/OperationParameters.aidl
+++ b/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/OperationParameters.aidl
@@ -16,6 +16,7 @@
 package android.hardware.security.see.hwcrypto;
 
 import android.hardware.security.see.hwcrypto.types.SymmetricAuthOperationParameters;
+import android.hardware.security.see.hwcrypto.types.SymmetricOperationParameters;
 
 /*
  * Type that describes the parameters for the different operations that can be performed.
@@ -25,4 +26,9 @@
      * Parameters for authenticated symmetric cryptography (AES GCM).
      */
     SymmetricAuthOperationParameters symmetricAuthCrypto;
+
+    /*
+     * Parameters for non-authenticated symmetric cryptography (AES/TDES).
+     */
+    SymmetricOperationParameters symmetricCrypto;
 }
diff --git a/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/types/AesCipherMode.aidl b/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/types/AesCipherMode.aidl
new file mode 100644
index 0000000..ac31557
--- /dev/null
+++ b/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/types/AesCipherMode.aidl
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.security.see.hwcrypto.types;
+
+import android.hardware.security.see.hwcrypto.types.CipherModeParameters;
+import android.hardware.security.see.hwcrypto.types.Void;
+
+/*
+ * Type used for the parameters needed to run a non-authenticated AES operation.
+ */
+union AesCipherMode {
+    /*
+     * Cipher Block Chaining mode. Padding will either be none or PKCS#7 depending on the key policy
+     * padding parameter. It contains the nonce for the operation.
+     */
+    CipherModeParameters cbc;
+
+    /*
+     * Counter mode. Type contains the nonce for the operation.
+     */
+    CipherModeParameters ctr;
+}
diff --git a/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/types/CipherModeParameters.aidl b/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/types/CipherModeParameters.aidl
new file mode 100644
index 0000000..bfa5daa
--- /dev/null
+++ b/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/types/CipherModeParameters.aidl
@@ -0,0 +1,24 @@
+
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.security.see.hwcrypto.types;
+
+/*
+ * Type encapsulating nonce used on non-authenticated AES symmetric encryption.
+ */
+parcelable CipherModeParameters {
+    byte[16] nonce;
+}
diff --git a/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/types/SymmetricCryptoParameters.aidl b/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/types/SymmetricCryptoParameters.aidl
new file mode 100644
index 0000000..2350242
--- /dev/null
+++ b/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/types/SymmetricCryptoParameters.aidl
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.security.see.hwcrypto.types;
+
+import android.hardware.security.see.hwcrypto.types.AesCipherMode;
+
+/*
+ * Data needed to perform non-authenticated symmetric cryptographic operations.
+ */
+union SymmetricCryptoParameters {
+    /*
+     * AES (Advanced Encryption Standard) parameters.
+     */
+    AesCipherMode aes;
+}
diff --git a/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/types/SymmetricOperationParameters.aidl b/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/types/SymmetricOperationParameters.aidl
new file mode 100644
index 0000000..1d1554d
--- /dev/null
+++ b/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/types/SymmetricOperationParameters.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.security.see.hwcrypto.types;
+
+import android.hardware.security.see.hwcrypto.IOpaqueKey;
+import android.hardware.security.see.hwcrypto.types.SymmetricCryptoParameters;
+import android.hardware.security.see.hwcrypto.types.SymmetricOperation;
+
+/*
+ * Parameters needed to perform a non-authenticated symmetric cryptographic operation.
+ */
+parcelable SymmetricOperationParameters {
+    /*
+     * Key to be used on the operation.
+     */
+    IOpaqueKey key;
+
+    /*
+     * Encryption or Decryption.
+     */
+    SymmetricOperation direction;
+
+    /*
+     * Parameters that specify the desired non-authenticated symmetric cryptographic operation.
+     */
+    SymmetricCryptoParameters parameters;
+}