>>Are you able to save today and to read tomorrow this way?
>>being a simmetrical alg., aren't you exposing the user instead
>>of protecting him?
>>...To save today and read tomorow???..
what is that meaning?
what to save and what to read?? the key?
>>being a simmetrical alg., aren't you exposing the user instead
>>of protecting him?
No . using plane chars is worse
since the key is not changing at all
so if you encrypt a file full of identical chars you'll get
repetative strings inside the file like:
"XXXXXXXXXXXXXXXXXXXXXX" < before
"ABBCABBCABBCABBCABBCAB"> after