Move adb RSA utilities into its own library.
Since both the client and daemon will now be generating keys.
BUG: b/111434128
Test: atest adb_crypto_test
Change-Id: I6fac562ae5629ab30b6639fbd88d822dae6e96bd
diff --git a/adb/crypto/key.cpp b/adb/crypto/key.cpp
new file mode 100644
index 0000000..4d87006
--- /dev/null
+++ b/adb/crypto/key.cpp
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2019 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 "adb/crypto/key.h"
+
+#include <android-base/logging.h>
+#include <openssl/bn.h>
+#include <openssl/pem.h>
+#include <openssl/rsa.h>
+
+namespace adb {
+namespace crypto {
+
+// static
+std::string Key::ToPEMString(EVP_PKEY* pkey) {
+ bssl::UniquePtr<BIO> bio(BIO_new(BIO_s_mem()));
+ int rc = PEM_write_bio_PKCS8PrivateKey(bio.get(), pkey, nullptr, nullptr, 0, nullptr, nullptr);
+ if (rc != 1) {
+ LOG(ERROR) << "PEM_write_bio_PKCS8PrivateKey failed";
+ return "";
+ }
+
+ BUF_MEM* mem = nullptr;
+ BIO_get_mem_ptr(bio.get(), &mem);
+ if (!mem || !mem->data || !mem->length) {
+ LOG(ERROR) << "BIO_get_mem_ptr failed";
+ return "";
+ }
+
+ return std::string(mem->data, mem->length);
+}
+
+} // namespace crypto
+} // namespace adb