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add const int aes_key_optimize

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wangyu- 2017-09-18 07:29:12 -05:00
parent 661b329930
commit dcc722ff5e
3 changed files with 17 additions and 8 deletions
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15
encrypt.cpp
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@ -209,8 +209,11 @@ int de_padding(const char *data ,int &data_len,int padding_num)
int cipher_aes128cbc_encrypt(const char *data,char *output,int &len,char * key) int cipher_aes128cbc_encrypt(const char *data,char *output,int &len,char * key)
{ {
static int first_time=1; static int first_time=1;
if(first_time==0) key=0; if(aes_key_optimize)
else first_time=0; {
if(first_time==0) key=0;
else first_time=0;
}
char buf[buf_len]; char buf[buf_len];
memcpy(buf,data,len);//TODO inefficient code memcpy(buf,data,len);//TODO inefficient code
@ -258,9 +261,11 @@ int cipher_none_encrypt(const char *data,char *output,int &len,char * key)
int cipher_aes128cbc_decrypt(const char *data,char *output,int &len,char * key) int cipher_aes128cbc_decrypt(const char *data,char *output,int &len,char * key)
{ {
static int first_time=1; static int first_time=1;
if(first_time==0) key=0; if(aes_key_optimize)
else first_time=0; {
if(first_time==0) key=0;
else first_time=0;
}
if(len%16 !=0) {mylog(log_debug,"len%%16!=0\n");return -1;} if(len%16 !=0) {mylog(log_debug,"len%%16!=0\n");return -1;}
//if(len<0) {mylog(log_debug,"len <0\n");return -1;} //if(len<0) {mylog(log_debug,"len <0\n");return -1;}
AES_CBC_decrypt_buffer((unsigned char *)output,(unsigned char *)data,len,(unsigned char *)key,(unsigned char *)zero_iv); AES_CBC_decrypt_buffer((unsigned char *)output,(unsigned char *)data,len,(unsigned char *)key,(unsigned char *)zero_iv);

8
encrypt.h
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@ -10,6 +10,10 @@
//using namespace std; //using namespace std;
const int aes_key_optimize=1; //if enabled,once you used a key for aes,you cant change it anymore
int my_encrypt(const char *data,char *output,int &len,char * key); int my_encrypt(const char *data,char *output,int &len,char * key);
int my_decrypt(const char *data,char *output,int &len,char * key); int my_decrypt(const char *data,char *output,int &len,char * key);
@ -35,7 +39,7 @@ extern unordered_map<int, const char *> cipher_mode_tostring;
int cipher_decrypt(const char *data,char *output,int &len,char * key); int cipher_decrypt(const char *data,char *output,int &len,char * key);//internal interface ,exposed for test only
int cipher_encrypt(const char *data,char *output,int &len,char * key); int cipher_encrypt(const char *data,char *output,int &len,char * key);//internal interface ,exposed for test only
#endif #endif

2
lib/aes_faster_c/aes.h
View File

@ -37,7 +37,7 @@
////////modification begin ////////modification begin
#define POLARSSL_AES_ROM_TABLES #define POLARSSL_AES_ROM_TABLES
#define POLARSSL_CIPHER_MODE_CBC #define POLARSSL_CIPHER_MODE_CBC
#define POLARSSL_SELF_TEST //#define POLARSSL_SELF_TEST
#define polarssl_printf printf #define polarssl_printf printf
///////add end ///////add end