问题
I want to create a program, which can encrypt and decrypt a complete file with an individual password. Is there any way to manage this in Qt and/or C++ and how?
回答1:
I've never used it myself, but I've heard great things about QCA. It's cross platfrom, uses a Qt-style API and Qt datatypes.
回答2:
www.cryptopp.com is a very complete C++ library with implementations of most algorithms.
The actual program (select file, read, obtain key, encrypt etc) should be piece of cake.
回答3:
Old, I know, but try Botan. It's actually used internally by Qt Creator 2.0. If you download the Qt Creator 2.0 sources you can find a copy of Botan 1.8.8 all set up for the Qt build system (qmake).
回答4:
Neither Qt nor the C++ standard library have encryption built-in. You'll need another external library to handle encryption.
回答5:
Qt doesn't provide functionality to encrypt/decrypt.
QCryptographicHash only generates hashes. It is not what you are looking for.
来源：https://stackoverflow.com/questions/1262081/how-to-encrypt-and-decrypt-a-file-with-qt-c