mirror of
https://github.com/DrKLO/Telegram.git
synced 2024-12-23 15:00:50 +01:00
81 lines
2.7 KiB
C
81 lines
2.7 KiB
C
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <jni.h>
|
|
#include <sys/types.h>
|
|
#include <inttypes.h>
|
|
#include <android/log.h>
|
|
#include "aes.h"
|
|
#include "log.h"
|
|
|
|
JNIEXPORT jbyteArray Java_org_telegram_messenger_Utilities_aesIgeEncryption(JNIEnv *env, jclass class, jbyteArray _what, jbyteArray _key, jbyteArray _iv, jboolean encrypt, jboolean changeIv) {
|
|
unsigned char *what = (unsigned char *)(*env)->GetByteArrayElements(env, _what, NULL);
|
|
unsigned char *key = (unsigned char *)(*env)->GetByteArrayElements(env, _key, NULL);
|
|
unsigned char *__iv = (unsigned char *)(*env)->GetByteArrayElements(env, _iv, NULL);
|
|
unsigned char *iv = 0;
|
|
|
|
if (!changeIv) {
|
|
iv = (unsigned char *)malloc((*env)->GetArrayLength(env, _iv));
|
|
memcpy(iv, __iv, (*env)->GetArrayLength(env, _iv));
|
|
} else {
|
|
iv = __iv;
|
|
}
|
|
|
|
int len = (*env)->GetArrayLength(env, _what);
|
|
AES_KEY akey;
|
|
if (!encrypt) {
|
|
AES_set_decrypt_key(key, (*env)->GetArrayLength(env, _key) * 8, &akey);
|
|
AES_ige_encrypt(what, what, len, &akey, iv, AES_DECRYPT);
|
|
} else {
|
|
AES_set_encrypt_key(key, (*env)->GetArrayLength(env, _key) * 8, &akey);
|
|
AES_ige_encrypt(what, what, len, &akey, iv, AES_ENCRYPT);
|
|
}
|
|
(*env)->ReleaseByteArrayElements(env, _what, what, 0);
|
|
(*env)->ReleaseByteArrayElements(env, _key, key, JNI_ABORT);
|
|
if (!changeIv) {
|
|
(*env)->ReleaseByteArrayElements(env, _iv, __iv, JNI_ABORT);
|
|
free(iv);
|
|
} else {
|
|
(*env)->ReleaseByteArrayElements(env, _iv, __iv, 0);
|
|
}
|
|
return _what;
|
|
}
|
|
|
|
uint64_t gcd(uint64_t a, uint64_t b){
|
|
while(a != 0 && b != 0) {
|
|
while((b & 1) == 0) b >>= 1;
|
|
while((a & 1) == 0) a >>= 1;
|
|
if(a > b) a -= b; else b -= a;
|
|
}
|
|
return b == 0 ? a : b;
|
|
}
|
|
|
|
JNIEXPORT jlong Java_org_telegram_messenger_Utilities_doPQNative(JNIEnv* env, jclass class, jlong _what) {
|
|
uint64_t what = _what;
|
|
int it = 0, i, j;
|
|
uint64_t g = 0;
|
|
for (i = 0; i < 3 || it < 1000; i++){
|
|
int q = ((lrand48() & 15) + 17) % what;
|
|
uint64_t x = (long long)lrand48() % (what - 1) + 1, y = x;
|
|
int lim = 1 << (i + 18), j;
|
|
for(j = 1; j < lim; j++){
|
|
++it;
|
|
uint64_t a = x, b = x, c = q;
|
|
while(b){
|
|
if(b & 1){
|
|
c += a;
|
|
if(c >= what) c -= what;
|
|
}
|
|
a += a;
|
|
if(a >= what) a -= what;
|
|
b >>= 1;
|
|
}
|
|
x = c;
|
|
uint64_t z = x < y ? what + x - y : x - y;
|
|
g = gcd(z, what);
|
|
if(g != 1) break;
|
|
if(!(j & (j - 1))) y = x;
|
|
}
|
|
if(g > 1 && g < what) break;
|
|
}
|
|
return g;
|
|
}
|