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/Android.bp b/adb/crypto/Android.bp
new file mode 100644
index 0000000..da4869a
--- /dev/null
+++ b/adb/crypto/Android.bp
@@ -0,0 +1,85 @@
+// 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.
+
+cc_defaults {
+    name: "libadb_crypto_defaults",
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Wthread-safety",
+        "-Werror",
+    ],
+
+    compile_multilib: "both",
+
+    srcs: [
+        "key.cpp",
+        "rsa_2048_key.cpp",
+        "x509_generator.cpp",
+    ],
+
+    target: {
+        windows: {
+            compile_multilib: "first",
+            enabled: true,
+        },
+    },
+
+    export_include_dirs: ["include"],
+
+    visibility: [
+        "//system/core/adb:__subpackages__",
+    ],
+
+    host_supported: true,
+    recovery_available: true,
+
+    stl: "libc++_static",
+
+    shared_libs: [
+        "libadb_protos",
+        "libbase",
+        "liblog",
+        "libcrypto",
+        "libcrypto_utils",
+    ],
+}
+
+cc_library {
+    name: "libadb_crypto",
+    defaults: ["libadb_crypto_defaults"],
+
+    apex_available: [
+        "com.android.adbd",
+        "test_com.android.adbd",
+    ],
+
+    static_libs: [
+        "libadb_protos",
+    ],
+}
+
+// For running atest (b/147158681)
+cc_library_static {
+    name: "libadb_crypto_static",
+    defaults: ["libadb_crypto_defaults"],
+
+    apex_available: [
+        "//apex_available:platform",
+    ],
+
+    static_libs: [
+        "libadb_protos_static",
+    ],
+}