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it still works,commit before refactor

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wangyu 2017-07-22 23:39:35 +08:00 committed by wangyu
parent 269754a009
commit 98bc2e0b99
3 changed files with 144 additions and 2 deletions
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12
encrypt.cpp
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@ -7,7 +7,7 @@
//static uint64_t seq=1;
static uint8_t zero_iv[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0};//this prog use zero iv,you should make sure first block of data contains a random/nonce data
static int8_t zero_iv[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0};//this prog use zero iv,you should make sure first block of data contains a random/nonce data
static const int disable_all=0;
@ -95,3 +95,13 @@ int my_decrypt(uint8_t *data,uint8_t *output,int &len,uint8_t * key)
return 0;
}
int my_encrypt_pesudo_header(uint8_t *data,uint8_t *output,int &len,uint8_t * key,uint8_t *header,int hlen)
{
return 0;
}
int my_decrypt_pesudo_header(uint8_t *data,uint8_t *output,int &len,uint8_t * key,uint8_t *header,int hlen)
{
return 0;
}

3
encrypt.h
View File

@ -8,4 +8,7 @@
#include <stdio.h>
int my_encrypt(uint8_t *data,uint8_t *output,int &len,uint8_t * key);
int my_decrypt(uint8_t *data,uint8_t *output,int &len,uint8_t * key);
int my_encrypt_pesudo_header(uint8_t *data,uint8_t *output,int &len,uint8_t * key,uint8_t *header,int hlen);
int my_decrypt_pesudo_header(uint8_t *data,uint8_t *output,int &len,uint8_t * key,uint8_t *header,int hlen);
#endif

131
main.cpp
View File

@ -58,6 +58,10 @@ typedef uint32_t id_t;
typedef uint64_t iv_t;
typedef uint64_t anti_replay_seq_t;
anti_replay_seq_t anti_replay_seq=0;
id_t const_id=0;
id_t oppsite_const_id=0;
@ -150,6 +154,8 @@ char raw_recv_buf2[buf_len];
char raw_recv_buf3[buf_len];
char replay_buf[buf_len];
char send_data_buf[buf_len]; //buf for send data and send hb
char send_data_buf2[buf_len];
struct sock_filter code_tcp[] = {
{ 0x28, 0, 0, 0x0000000c },//0
@ -174,7 +180,7 @@ uint16_t ip_id=1;
struct sockaddr_in udp_old_addr_in;
uint64_t anti_replay_seq=0;
uint8_t key[]={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16, 0,0,0,0};
@ -204,6 +210,12 @@ void init_random_number_fd()
exit(-1);
}
}
uint64_t get_true_random_number_64()
{
uint64_t ret;
read(random_number_fd,&ret,sizeof(ret));
return ret;
}
uint32_t get_true_random_number_0()
{
uint32_t ret;
@ -219,6 +231,24 @@ uint32_t get_true_random_number_nz() //nz for non-zero
}
return ret;
}
uint64_t ntoh64(uint64_t a)
{
if(__BYTE_ORDER == __LITTLE_ENDIAN)
{
return __bswap_64( a);
}
else return a;
}
uint64_t hton64(uint64_t a)
{
if(__BYTE_ORDER == __LITTLE_ENDIAN)
{
return __bswap_64( a);
}
else return a;
}
struct anti_replay_t
{
uint64_t max_packet_received;
@ -1699,6 +1729,105 @@ int recv_raw(packet_info_t &info,char * &payload,int &payloadlen)
else if(raw_mode==mode_icmp) return recv_raw_icmp(info,payload,payloadlen);
}
int send_bare(packet_info_t &info,char* data,int len)
{
if(len==0) //dont encrpyt zero length packet;
{
send_raw(info,data,len);
return 0;
}
//static send_bare[buf_len];
iv_t iv=get_true_random_number_64();
memcpy(send_data_buf,&iv,sizeof(iv_t));
memcpy(send_data_buf+sizeof(iv_t),data,len);
int new_len=len+sizeof(iv_t);
if(my_encrypt((uint8_t *)send_data_buf,(uint8_t*)send_data_buf2,new_len,key_me)!=0)
{
return -1;
}
send_raw(info,send_data_buf2,new_len);
return 0;
}
char recv_data_buf[buf_len];
int recv_bare(packet_info_t &info,char* & data,int & len)
{
if(recv_raw(info,data,len)<0)
{
return -1;
}
if(len==0) //dont decrpyt zero length packet;
{
return 0;
}
if(my_decrypt((uint8_t *)data,(uint8_t*)recv_data_buf,len,key_oppsite)!=0)
{
return -1;
}
data=recv_data_buf+sizeof(iv_t);
len-=sizeof(iv_t);
return 0;
}
int send_safe(packet_info_t &info,char* data,int len)
{
id_t n_tmp_id=hton64(my_id);
memcpy(send_data_buf,&n_tmp_id,sizeof(n_tmp_id));
n_tmp_id=hton64(oppsite_id);
memcpy(send_data_buf+sizeof(n_tmp_id),&n_tmp_id,sizeof(n_tmp_id));
anti_replay_seq_t n_seq=hton64(anti_replay_seq++);
memcpy(send_data_buf+sizeof(n_tmp_id)*2,&n_seq,sizeof(n_seq));
memcpy(send_data_buf+sizeof(n_tmp_id)*2+sizeof(n_seq),data,len);//data;
int new_len=len+sizeof(n_seq)+sizeof(n_tmp_id)*2;
if(my_encrypt((uint8_t *)send_data_buf,(uint8_t*)send_data_buf2,new_len,key_me)!=0)
{
return -1;
}
send_raw(info,send_data_buf2,new_len);
return 0;
}
int recv_safe(packet_info_t &info,char* data,int len)
{
if(my_decrypt((uint8_t *)data,(uint8_t*)recv_data_buf,len,key_oppsite)!=0)
{
return -1;
}
id_t h_oppiste_id= ntoh64 ( *((anti_replay_seq_t * )(data)) );
id_t h_my_id= ntoh64 ( *((anti_replay_seq_t * )(data)) +sizeof(h_my_id) );
anti_replay_seq_t h_seq= ntoh64 ( *((anti_replay_seq_t * )(data +sizeof(h_my_id) *2 )) );
if(h_oppiste_id!=oppsite_id||h_my_id!=my_id)
{
printf("auth fail\n");
return -1;
}
if (anti_replay.is_vaild(h_seq) != 1) {
printf("dropped replay packet\n");
return -1;
}
return 0;
}
int send_bare_data(packet_info_t &info,char* data,int len)
{