std::string get_hmac_sha1(std::string md5, std::string apikey)
{
const char *test = md5.c_str();
const char *key = apikey.c_str();
//char key[41] = "e_kunyan98f5103019170612fd3a486e3d872c48";
//std::cout << key << std::endl;
BYTE digest[20];
CHMAC_SHA1 HMAC_SHA1;
HMAC_SHA1.HMAC_SHA1((BYTE*)test, strlen(test), (BYTE*)key, strlen(key), digest);
// Check with digest equal to 0xb617318655057264e28bc0b6fb378c8ef146be00
// or not
std::string hamc_sha1 = byteToHexStr((BYTE*)digest, sizeof(digest));
//cout << hamc_sha1 << endl;
return hamc_sha1;
}
/**
* 初始化, 校验签名
*/
void checkSign(JNIEnv *env) {
if (!CHECK_SIGN) {
if (DEBUG)
ALOGD("skip check sign.");
return;
}
int result = JNI_FALSE;
jclass clsApplication = env->FindClass("me/yinzhong/jnisignchecker/DemoApplication");
// "()Lcom/johnnyyin/ndkdemo/DemoApplication;"
jmethodID midGetInstance = env->GetStaticMethodID(clsApplication, "getInstance",
"()Lme/yinzhong/jnisignchecker/DemoApplication;");
jobject application = env->CallStaticObjectMethod(clsApplication, midGetInstance);
jmethodID midGetPackageManager = env->GetMethodID(clsApplication, "getPackageManager",
"()Landroid/content/pm/PackageManager;");
jmethodID midGetPackageName = env->GetMethodID(clsApplication, "getPackageName",
"()Ljava/lang/String;");
jmethodID midGetPackageInfo = env->GetMethodID(
env->FindClass("android/content/pm/PackageManager"), "getPackageInfo",
"(Ljava/lang/String;I)Landroid/content/pm/PackageInfo;");
jobject packageManager = env->CallObjectMethod(application, midGetPackageManager);
jstring packageName = (jstring) env->CallObjectMethod(application, midGetPackageName);
jobject packageInfo = env->CallObjectMethod(packageManager, midGetPackageInfo, packageName,
0x00000040);
jfieldID fidSignatures = env->GetFieldID(env->FindClass("android/content/pm/PackageInfo"),
"signatures",
"[Landroid/content/pm/Signature;");
jobjectArray signatures = (jobjectArray) env->GetObjectField(packageInfo, fidSignatures);
int length = env->GetArrayLength(signatures);
for (int i = 0; i < length; i++) {
jobject signature = env->GetObjectArrayElement(signatures, i);
// localSignature.toByteArray()
jmethodID midToByteArray = env->GetMethodID(env->GetObjectClass(signature), "toByteArray",
"()[B");
jobject obj_sign_byte_array = env->CallObjectMethod(signature, midToByteArray);
// MessageDigest localMessageDigest = MessageDigest.getInstance("MD5");
jclass clsMessageDigest = env->FindClass("java/security/MessageDigest");
jmethodID midMessageDigestGetInstance = env->GetStaticMethodID(clsMessageDigest,
"getInstance",
"(Ljava/lang/String;)Ljava/security/MessageDigest;");
jobject objMd5 = env->CallStaticObjectMethod(clsMessageDigest, midMessageDigestGetInstance,
env->NewStringUTF("md5"));
// localMessageDigest.reset();
jmethodID midReset = env->GetMethodID(clsMessageDigest, "reset", "()V");
env->CallVoidMethod(objMd5, midReset);
// localMessageDigest.update(localSignature.toByteArray());
//tem_class = (*env)->GetObjectClass(env, obj_md5);
jmethodID midUpdate = env->GetMethodID(clsMessageDigest, "update", "([B)V");
env->CallVoidMethod(objMd5, midUpdate, obj_sign_byte_array);
// localMessageDigest.digest()
jmethodID midDigest = env->GetMethodID(clsMessageDigest, "digest", "()[B");
// 这个是md5以后的byte数组，现在只要将它转换成16进制字符串，就可以和之前的比较了
jbyteArray objArraySign = (jbyteArray) env->CallObjectMethod(objMd5, midDigest);
// // 这个就是签名的md5值
// String str2 = toHex(localMessageDigest.digest());
jsize arrayLength = env->GetArrayLength(objArraySign);
jbyte *byteArrayElements = env->GetByteArrayElements(objArraySign, JNI_FALSE);
char *charResult = (char *) malloc((size_t) arrayLength * 2 + 1);// 后面+1预留\0结束符
// 将byte数组转换成16进制字符串, 这里强转为unsigned char *, 因为上面返回的byte数组是没符号的。
byteToHexStr((unsigned char *) byteArrayElements, charResult, arrayLength);
int cmpResult = strcmp(charResult, SIGN_HEX);
if (DEBUG) {
ALOGD(env->GetStringUTFChars(env->NewStringUTF(charResult), JNI_FALSE));
}
// release
env->ReleaseByteArrayElements(objArraySign, byteArrayElements, JNI_ABORT);
free(charResult);
result = (cmpResult == 0 ? JNI_TRUE : JNI_FALSE);
}
if (result == JNI_TRUE) {
if (DEBUG)
ALOGD("checkSign success.");
} else {
if (DEBUG)
ALOGD("checkSign fail.");
exit(0);
}
}