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changed iptables -A to -I, auth_mode: simple

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wangyu
2017-08-04 21:46:49 +08:00
parent acece0b329
commit 956bc5ab06
5 changed files with 84 additions and 32 deletions
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50
encrypt.cpp
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@@ -13,11 +13,11 @@
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
unordered_map<int, const char *> auth_mode_tostring = {{auth_none, "none"}, {auth_md5, "md5"}, {auth_crc32, "crc32"},{auth_sum,"sum"}};
unordered_map<int, const char *> auth_mode_tostring = {{auth_none, "none"}, {auth_md5, "md5"}, {auth_crc32, "crc32"},{auth_simple,"simple"}};
unordered_map<int, const char *> cipher_mode_tostring={{cipher_none,"none"},{cipher_aes128cbc,"aes128cbc"},{cipher_xor,"xor"}};
auth_mode_t auth_mode=auth_sum;
cipher_mode_t cipher_mode=cipher_xor;
auth_mode_t auth_mode=auth_crc32;
cipher_mode_t cipher_mode=cipher_aes128cbc;
/*
@@ -45,7 +45,7 @@ unsigned int crc32h(unsigned char *message,int len) {
return ~crc;
}
/*
void sum(const unsigned char *data,int len,unsigned char* res) {
memset(res,0,sizeof(int));
for(int i=0,j=0;i<len;i++,j++)
@@ -55,7 +55,25 @@ unsigned int crc32h(unsigned char *message,int len) {
}
return ;
}
}*/
void simple_hash(unsigned char *str,int len,unsigned char* res) //djb2+ sdb
{
u32_t hash = 5381;
u32_t hash2 = 0;
int c;
int i=0;
while(c = *str++,i++!=len)
{
hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
hash2 = c + (hash2 << 6) + (hash2 << 16) - hash2;
}
hash=htonl(hash);
hash2=htonl(hash2);
memcpy(res,&hash,sizeof(hash));
memcpy(res+sizeof(hash),&hash2,sizeof(hash2));
}
int auth_md5_cal(const char *data,char * output,int &len)
{
@@ -75,21 +93,21 @@ int auth_crc32_cal(const char *data,char * output,int &len)
return 0;
}
int auth_sum_cal(const char *data,char * output,int &len)
int auth_simple_cal(const char *data,char * output,int &len)
{
//char res[4];
memcpy(output,data,len);//TODO inefficient code
sum((unsigned char *)output,len,(unsigned char *)(output+len));
len+=4;
simple_hash((unsigned char *)output,len,(unsigned char *)(output+len));
len+=8;
return 0;
}
int auth_sum_verify(const char *data,int &len)
int auth_simple_verify(const char *data,int &len)
{
if(len<4) return -1;
unsigned char res[4];
len-=4;
sum((unsigned char *)data,len,res);
if(memcmp(res,data+len,sizeof(int))!=0)
if(len<8) return -1;
unsigned char res[8];
len-=8;
simple_hash((unsigned char *)data,len,res);
if(memcmp(res,data+len,8)!=0)
return -1;
return 0;
}
@@ -236,7 +254,7 @@ int auth_cal(const char *data,char * output,int &len)
{
case auth_crc32:return auth_crc32_cal(data, output, len);
case auth_md5:return auth_md5_cal(data, output, len);
case auth_sum:return auth_sum_cal(data, output, len);
case auth_simple:return auth_simple_cal(data, output, len);
case auth_none:return auth_none_cal(data, output, len);
default: return auth_md5_cal(data,output,len);//default
}
@@ -249,7 +267,7 @@ int auth_verify(const char *data,int &len)
{
case auth_crc32:return auth_crc32_verify(data, len);
case auth_md5:return auth_md5_verify(data, len);
case auth_sum:return auth_sum_verify(data, len);
case auth_simple:return auth_simple_verify(data, len);
case auth_none:return auth_none_verify(data, len);
default: return auth_md5_verify(data,len);//default
}