AES with padding pkcs7 c++ code

Question

I need an example of string encryption (in C++ -> I\'m working on linux-Ubuntu) with aes-cbc256 and a padding: PKCS7 Please help.

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For the following code how ca

Answer 1

look also at my answer to this question

I suggest checking out cryptopp. Here's a code sample:

CryptoPP::CBC_Mode::Encryption encryptor;
byte* key;
size_t keylen;
// ... acquire key

encryptor.SetKey( key, keylen );

std::string input;
std::string result;
// read input ...

StringSource( input, true,
       new StreamTransformationFilter( encryptor, new StringSink( result ),
     StreamTransformationFilter::PKCS_PADDING));

The values for padding mode in StreamTransformationFilter can be:

BlockPaddingScheme { 
  NO_PADDING, ZEROS_PADDING, PKCS_PADDING, ONE_AND_ZEROS_PADDING, 
  DEFAULT_PADDING 
}

EDIT: replaced the padding mode in the sample to pkcs