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/*
* PBKDF
* (C) 2012 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#include <botan/pbkdf.h>
#include <botan/internal/assert.h>
#include <stdexcept>
namespace Botan {
OctetString PBKDF::derive_key(size_t output_len,
const std::string& passphrase,
const byte salt[], size_t salt_len,
size_t iterations) const
{
if(iterations == 0)
throw std::invalid_argument(name() + ": Invalid iteration count");
auto derived = key_derivation(output_len, passphrase,
salt, salt_len, iterations,
std::chrono::milliseconds(0));
BOTAN_ASSERT(derived.first == iterations,
"PBKDF used the correct number of iterations");
return derived.second;
}
OctetString PBKDF::derive_key(size_t output_len,
const std::string& passphrase,
const byte salt[], size_t salt_len,
std::chrono::milliseconds ms,
size_t& iterations) const
{
auto derived = key_derivation(output_len, passphrase, salt, salt_len, 0, ms);
iterations = derived.first;
return derived.second;
}
}
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