des_dec(out, out, (uint8_t*)key + 0);
}
+void tdes_2key_enc(void* out, const void* in, size_t length, const void* key, unsigned char iv[8]){
+
+ if( length % 8 ) return;
+
+ uint8_t i;
+ uint8_t* tin = (uint8_t*) in;
+ uint8_t* tout = (uint8_t*) out;
+
+ while( length > 0 )
+ {
+ for ( i = 0; i < 8; i++ )
+ tout[i] = (unsigned char)(tin[i] ^ iv[i]);
+
+ des_enc(tout, tin, (uint8_t*)key + 0);
+ des_dec(tout, tout, (uint8_t*)key + 8);
+ des_enc(tout, tout, (uint8_t*)key + 0);
+
+ memcpy(iv, tout, 8);
+
+ tin += 8;
+ tout += 8;
+ length -= 8;
+ }
+}
+
+void tdes_2key_dec(void* out, const void* in, size_t length, const void* key, unsigned char iv[8]){
+
+ if( length % 8 ) return;
+
+ uint8_t i;
+ unsigned char temp[8];
+ uint8_t* tin = (uint8_t*) in;
+ uint8_t* tout = (uint8_t*) out;
+
+ while( length > 0 )
+ {
+ memcpy(temp, tin, 8);
+
+ des_dec(tout, tin, (uint8_t*)key + 0);
+ des_enc(tout, tout, (uint8_t*)key + 8);
+ des_dec(tout, tout, (uint8_t*)key + 0);
+
+ for (i = 0; i < 8; i++)
+ tout[i] = (unsigned char)(tout[i] ^ iv[i]);
+
+ memcpy(iv, temp, 8);
+
+ tin += 8;
+ tout += 8;
+ length -= 8;
+ }
+}
+
+
/******************************************************************************/