1 files changed, 0 insertions, 66 deletions
diff --git a/host/commands/secure_env/rust/soft.rs b/host/commands/secure_env/rust/soft.rs
deleted file mode 100644
index 3f031bbf7..000000000
--- a/host/commands/secure_env/rust/soft.rs
+++ /dev/null
@@ -1,66 +0,0 @@
-//
-// Copyright (C) 2022 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.
-
-//! Software-only trait implementations using fake keys.
-
-use kmr_common::{
-    crypto,
-    crypto::{Hkdf, Rng},
-    Error,
-};
-use kmr_crypto_boring::{hmac::BoringHmac, rng::BoringRng};
-use kmr_ta::device::RetrieveKeyMaterial;
-
-/// Root key retrieval using hard-coded fake keys.
-pub struct Keys;
-
-impl RetrieveKeyMaterial for Keys {
-    fn root_kek(&self, _context: &[u8]) -> Result<crypto::OpaqueOr<crypto::hmac::Key>, Error> {
-        // Matches `MASTER_KEY` in system/keymaster/key_blob_utils/software_keyblobs.cpp
-        Ok(crypto::hmac::Key::new([0; 16].to_vec()).into())
-    }
-    fn kak(&self) -> Result<crypto::OpaqueOr<crypto::aes::Key>, Error> {
-        // Matches `kFakeKeyAgreementKey` in
-        // system/keymaster/km_openssl/soft_keymaster_enforcement.cpp.
-        Ok(crypto::aes::Key::Aes256([0; 32]).into())
-    }
-    fn unique_id_hbk(&self, _ckdf: &dyn crypto::Ckdf) -> Result<crypto::hmac::Key, Error> {
-        // Matches value used in system/keymaster/contexts/pure_soft_keymaster_context.cpp.
-        crypto::hmac::Key::new_from(b"MustBeRandomBits")
-    }
-}
-
-pub struct Derive {
-    hbk: Vec<u8>,
-}
-
-impl Default for Derive {
-    fn default() -> Self {
-        // Use random data as an emulation of a hardware-backed key.
-        let mut hbk = vec![0; 32];
-        let mut rng = BoringRng;
-        rng.fill_bytes(&mut hbk);
-        Self { hbk }
-    }
-}
-
-impl crate::rpc::DeriveBytes for Derive {
-    fn derive_bytes(&self, context: &[u8], output_len: usize) -> Result<Vec<u8>, Error> {
-        BoringHmac.hkdf(&[], &self.hbk, context, output_len)
-    }
-}
-
-/// RPC artifact retrieval using software fake key.
-pub type RpcArtifacts = crate::rpc::Artifacts<Derive>;