2013-10-25 17:19:00 +02:00
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#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 <android/log.h>
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#include "aes.h"
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2013-12-20 20:25:49 +01:00
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#include "log.h"
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2013-10-25 17:19:00 +02:00
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2014-02-28 23:28:25 +01:00
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JNIEXPORT jbyteArray Java_org_telegram_messenger_Utilities_aesIgeEncryption(JNIEnv *env, jclass class, jbyteArray _what, jbyteArray _key, jbyteArray _iv, jboolean encrypt, jboolean changeIv, jint l) {
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2013-10-25 17:19:00 +02:00
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unsigned char *what = (unsigned char *)(*env)->GetByteArrayElements(env, _what, NULL);
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unsigned char *key = (unsigned char *)(*env)->GetByteArrayElements(env, _key, NULL);
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unsigned char *__iv = (unsigned char *)(*env)->GetByteArrayElements(env, _iv, NULL);
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unsigned char *iv = 0;
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if (!changeIv) {
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iv = (unsigned char *)malloc((*env)->GetArrayLength(env, _iv));
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memcpy(iv, __iv, (*env)->GetArrayLength(env, _iv));
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} else {
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iv = __iv;
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}
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2014-02-28 23:28:25 +01:00
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int len = l == 0 ? (*env)->GetArrayLength(env, _what) : l;
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2013-10-25 17:19:00 +02:00
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AES_KEY akey;
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if (!encrypt) {
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AES_set_decrypt_key(key, (*env)->GetArrayLength(env, _key) * 8, &akey);
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AES_ige_encrypt(what, what, len, &akey, iv, AES_DECRYPT);
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} else {
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AES_set_encrypt_key(key, (*env)->GetArrayLength(env, _key) * 8, &akey);
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AES_ige_encrypt(what, what, len, &akey, iv, AES_ENCRYPT);
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}
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(*env)->ReleaseByteArrayElements(env, _what, what, 0);
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(*env)->ReleaseByteArrayElements(env, _key, key, JNI_ABORT);
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if (!changeIv) {
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(*env)->ReleaseByteArrayElements(env, _iv, __iv, JNI_ABORT);
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free(iv);
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} else {
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(*env)->ReleaseByteArrayElements(env, _iv, __iv, 0);
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}
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return _what;
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}
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2014-02-28 23:28:25 +01:00
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JNIEXPORT void Java_org_telegram_messenger_Utilities_aesIgeEncryption2(JNIEnv *env, jclass class, jobject _what, jbyteArray _key, jbyteArray _iv, jboolean encrypt, jboolean changeIv, jint l) {
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jbyte *what = (*env)->GetDirectBufferAddress(env, _what);
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unsigned char *key = (unsigned char *)(*env)->GetByteArrayElements(env, _key, NULL);
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unsigned char *__iv = (unsigned char *)(*env)->GetByteArrayElements(env, _iv, NULL);
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unsigned char *iv = 0;
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if (!changeIv) {
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iv = (unsigned char *)malloc((*env)->GetArrayLength(env, _iv));
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memcpy(iv, __iv, (*env)->GetArrayLength(env, _iv));
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} else {
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iv = __iv;
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}
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AES_KEY akey;
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if (!encrypt) {
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AES_set_decrypt_key(key, (*env)->GetArrayLength(env, _key) * 8, &akey);
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AES_ige_encrypt(what, what, l, &akey, iv, AES_DECRYPT);
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} else {
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AES_set_encrypt_key(key, (*env)->GetArrayLength(env, _key) * 8, &akey);
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AES_ige_encrypt(what, what, l, &akey, iv, AES_ENCRYPT);
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}
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(*env)->ReleaseByteArrayElements(env, _key, key, JNI_ABORT);
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if (!changeIv) {
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(*env)->ReleaseByteArrayElements(env, _iv, __iv, JNI_ABORT);
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free(iv);
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} else {
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(*env)->ReleaseByteArrayElements(env, _iv, __iv, 0);
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}
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}
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2013-10-25 17:19:00 +02:00
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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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