mirror of
https://github.com/DrKLO/Telegram.git
synced 2024-12-22 22:45:18 +01:00
88 lines
2.6 KiB
C
88 lines
2.6 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <jni.h>
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#include <sys/types.h>
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#include <inttypes.h>
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#include <stdlib.h>
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#include "aes/aes.h"
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#include "utils.h"
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#include "sqlite.h"
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#include "gif.h"
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jint JNI_OnLoad(JavaVM *vm, void *reserved) {
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JNIEnv *env = 0;
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srand(time(NULL));
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if ((*vm)->GetEnv(vm, (void **) &env, JNI_VERSION_1_4) != JNI_OK) {
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return -1;
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}
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if (sqliteOnJNILoad(vm, reserved, env) == -1) {
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return -1;
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}
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gifOnJNILoad(vm, reserved, env);
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return JNI_VERSION_1_4;
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}
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void JNI_OnUnload(JavaVM *vm, void *reserved) {
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gifOnJNIUnload(vm, reserved);
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}
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JNIEXPORT void Java_org_telegram_messenger_Utilities_aesIgeEncryption(JNIEnv *env, jclass class, jobject buffer, jbyteArray key, jbyteArray iv, jboolean encrypt, int offset, int length) {
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jbyte *what = (*env)->GetDirectBufferAddress(env, buffer) + offset;
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unsigned char *keyBuff = (unsigned char *)(*env)->GetByteArrayElements(env, key, NULL);
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unsigned char *ivBuff = (unsigned char *)(*env)->GetByteArrayElements(env, iv, NULL);
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AES_KEY akey;
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if (!encrypt) {
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AES_set_decrypt_key(keyBuff, 32 * 8, &akey);
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AES_ige_encrypt(what, what, length, &akey, ivBuff, AES_DECRYPT);
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} else {
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AES_set_encrypt_key(keyBuff, 32 * 8, &akey);
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AES_ige_encrypt(what, what, length, &akey, ivBuff, AES_ENCRYPT);
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}
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(*env)->ReleaseByteArrayElements(env, key, keyBuff, JNI_ABORT);
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(*env)->ReleaseByteArrayElements(env, iv, ivBuff, 0);
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}
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uint64_t gcd(uint64_t a, uint64_t b){
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while(a != 0 && b != 0) {
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while((b & 1) == 0) b >>= 1;
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while((a & 1) == 0) a >>= 1;
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if(a > b) a -= b; else b -= a;
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}
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return b == 0 ? a : b;
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}
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JNIEXPORT jlong Java_org_telegram_messenger_Utilities_doPQNative(JNIEnv* env, jclass class, jlong _what) {
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uint64_t what = _what;
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int it = 0, i, j;
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uint64_t g = 0;
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for (i = 0; i < 3 || it < 1000; i++){
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int q = ((lrand48() & 15) + 17) % what;
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uint64_t x = (long long)lrand48() % (what - 1) + 1, y = x;
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int lim = 1 << (i + 18), j;
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for(j = 1; j < lim; j++){
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++it;
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uint64_t a = x, b = x, c = q;
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while(b){
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if(b & 1){
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c += a;
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if(c >= what) c -= what;
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}
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a += a;
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if(a >= what) a -= what;
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b >>= 1;
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}
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x = c;
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uint64_t z = x < y ? what + x - y : x - y;
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g = gcd(z, what);
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if(g != 1) break;
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if(!(j & (j - 1))) y = x;
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}
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if(g > 1 && g < what) break;
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}
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return g;
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}
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