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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/android/keystore.h"
#include <string_view>
#include <vector>
#include "base/android/jni_android.h"
#include "base/android/jni_array.h"
#include "base/android/jni_string.h"
#include "base/check.h"
// Must come after all headers that specialize FromJniType() / ToJniType().
#include "net/net_jni_headers/AndroidKeyStore_jni.h"
using base::android::AttachCurrentThread;
using base::android::ConvertJavaStringToUTF8;
using base::android::ConvertUTF8ToJavaString;
using base::android::HasException;
using base::android::JavaByteArrayToByteVector;
using base::android::JavaRef;
using base::android::ScopedJavaLocalRef;
using base::android::ToJavaByteArray;
namespace net::android {
std::string GetPrivateKeyClassName(const JavaRef<jobject>& key) {
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jstring> name =
Java_AndroidKeyStore_getPrivateKeyClassName(env, key);
return ConvertJavaStringToUTF8(env, name);
}
bool PrivateKeySupportsSignature(const base::android::JavaRef<jobject>& key,
std::string_view algorithm) {
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jstring> algorithm_ref =
ConvertUTF8ToJavaString(env, algorithm);
DCHECK(!algorithm_ref.is_null());
jboolean result =
Java_AndroidKeyStore_privateKeySupportsSignature(env, key, algorithm_ref);
return !HasException(env) && result;
}
bool PrivateKeySupportsCipher(const base::android::JavaRef<jobject>& key,
std::string_view algorithm) {
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jstring> algorithm_ref =
ConvertUTF8ToJavaString(env, algorithm);
DCHECK(!algorithm_ref.is_null());
jboolean result =
Java_AndroidKeyStore_privateKeySupportsCipher(env, key, algorithm_ref);
return !HasException(env) && result;
}
bool SignWithPrivateKey(const JavaRef<jobject>& private_key_ref,
std::string_view algorithm,
base::span<const uint8_t> input,
std::vector<uint8_t>* signature) {
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jstring> algorithm_ref =
ConvertUTF8ToJavaString(env, algorithm);
DCHECK(!algorithm_ref.is_null());
// Convert message to byte[] array.
ScopedJavaLocalRef<jbyteArray> input_ref = ToJavaByteArray(env, input);
DCHECK(!input_ref.is_null());
// Invoke platform API
ScopedJavaLocalRef<jbyteArray> signature_ref =
Java_AndroidKeyStore_signWithPrivateKey(env, private_key_ref,
algorithm_ref, input_ref);
if (HasException(env) || signature_ref.is_null())
return false;
// Write signature to string.
JavaByteArrayToByteVector(env, signature_ref, signature);
return true;
}
bool EncryptWithPrivateKey(const JavaRef<jobject>& private_key_ref,
std::string_view algorithm,
base::span<const uint8_t> input,
std::vector<uint8_t>* ciphertext) {
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jstring> algorithm_ref =
ConvertUTF8ToJavaString(env, algorithm);
DCHECK(!algorithm_ref.is_null());
// Convert message to byte[] array.
ScopedJavaLocalRef<jbyteArray> input_ref = ToJavaByteArray(env, input);
DCHECK(!input_ref.is_null());
// Invoke platform API
ScopedJavaLocalRef<jbyteArray> ciphertext_ref =
Java_AndroidKeyStore_encryptWithPrivateKey(env, private_key_ref,
algorithm_ref, input_ref);
if (HasException(env) || ciphertext_ref.is_null())
return false;
// Write ciphertext to string.
JavaByteArrayToByteVector(env, ciphertext_ref, ciphertext);
return true;
}
} // namespace net::android
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