Extracting .so file in android exposes hardcoded strings. How to avoid that?

Question

JNIEXPORT jstring JNICALL Java_com_commonutils_Encryption_APIKey(JNIEnv *env, jobject object){
    return (*env)->NewStringUTF(env, "test123");
}

Here extracting the so file exposes the value test123

Answer 1

A trivial way would be assigning characters one-by-one instead of through string literals.

For example,

char dummy[8] = {0};
dummy[0] = 't';
dummy[1] = 'e';
dummy[2] = 's';
dummy[3] = 't';
dummy[4] = '1';
dummy[5] = '2';
dummy[6] = '3';
return (*env)->NewStringUTF(env, dummy);