1 files changed, 0 insertions, 52 deletions
diff --git a/libs/attestation/HmacKeyManager.cpp b/libs/attestation/HmacKeyManager.cpp
deleted file mode 100644
index b15f143014..0000000000
--- a/libs/attestation/HmacKeyManager.cpp
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright (C) 2020 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.
- */
-
-#include <attestation/HmacKeyManager.h>
-#include <log/log.h>
-#include <openssl/hmac.h>
-#include <openssl/rand.h>
-
-namespace android {
-
-static std::array<uint8_t, 128> getRandomKey() {
-    std::array<uint8_t, 128> key;
-    if (RAND_bytes(key.data(), key.size()) != 1) {
-        LOG_ALWAYS_FATAL("Can't generate HMAC key");
-    }
-    return key;
-}
-
-HmacKeyManager::HmacKeyManager() : mHmacKey(getRandomKey()) {}
-
-std::array<uint8_t, 32> HmacKeyManager::sign(const uint8_t* data, size_t size) const {
-    // SHA256 always generates 32-bytes result
-    std::array<uint8_t, 32> hash;
-    unsigned int hashLen = 0;
-    uint8_t* result =
-            HMAC(EVP_sha256(), mHmacKey.data(), mHmacKey.size(), data, size, hash.data(), &hashLen);
-    if (result == nullptr) {
-        ALOGE("Could not sign the data using HMAC");
-        return INVALID_HMAC;
-    }
-
-    if (hashLen != hash.size()) {
-        ALOGE("HMAC-SHA256 has unexpected length");
-        return INVALID_HMAC;
-    }
-
-    return hash;
-}
-} // namespace android
-\ No newline at end of file