mailiverse/cpp/Lib/xcode-botan/Botan-1.10.3/doc/examples/keywrap.cpp
2013-07-25 22:51:23 -04:00

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790 B
C++

/*
* NIST keywrap example
* (C) 2011 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#include <botan/botan.h>
#include <botan/rfc3394.h>
#include <botan/hex.h>
#include <iostream>
int main()
{
using namespace Botan;
LibraryInitializer init;
AutoSeeded_RNG rng;
// The key to encrypt
SymmetricKey key(rng, 24);
// The key encryption key
SymmetricKey kek(rng, 32);
std::cout << "Original: " << key.as_string() << "\n";
Algorithm_Factory& af = global_state().algorithm_factory();
SecureVector<byte> enc = rfc3394_keywrap(key.bits_of(), kek, af);
std::cout << "Encrypted: " << hex_encode(enc) << "\n";
SecureVector<byte> dec = rfc3394_keyunwrap(enc, kek, af);
std::cout << "Decrypted: " << hex_encode(dec) << "\n";
}