encrypt file with SHA256 using C/C++

How c开发者_Python百科an I encode a file using sha256 and c/c++ ??? Thanks!

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SHA 256 stands for Secure Hash Algorithm ! It will only produce the hash of a given file . You can't retrieve the original file from a given hash otherwise hash functions are useless.

If you want to do encryption/decryption AES would be a better solution. Everything you need is in OpenSSL.

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If you don't know what SHA is for, then you better ask someone who knows this stuff instead of doing it yourself. Even if you use a given library, chances are very high that you will produce snake oil. Security depends on much more than calling some encryption functions.