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/*
* PBKDF
* (C) 2012 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include <botan/pbkdf.h>
#include <botan/internal/algo_registry.h>
#if defined(BOTAN_HAS_PBKDF1)
#include <botan/pbkdf1.h>
#endif
#if defined(BOTAN_HAS_PBKDF2)
#include <botan/pbkdf2.h>
#endif
namespace Botan {
#define BOTAN_REGISTER_PBKDF_1HASH(type, name) \
BOTAN_REGISTER_NAMED_T(PBKDF, name, type, (make_new_T_1X<type, HashFunction>))
#if defined(BOTAN_HAS_PBKDF1)
BOTAN_REGISTER_PBKDF_1HASH(PKCS5_PBKDF1, "PBKDF1");
#endif
#if defined(BOTAN_HAS_PBKDF2)
BOTAN_REGISTER_NAMED_T(PBKDF, "PBKDF2", PKCS5_PBKDF2, PKCS5_PBKDF2::make);
#endif
PBKDF::~PBKDF() {}
std::unique_ptr<PBKDF> PBKDF::create(const std::string& algo_spec,
const std::string& provider)
{
return std::unique_ptr<PBKDF>(make_a<PBKDF>(algo_spec, provider));
}
std::vector<std::string> PBKDF::providers(const std::string& algo_spec)
{
return providers_of<PBKDF>(PBKDF::Spec(algo_spec));
}
void PBKDF::pbkdf_timed(byte out[], size_t out_len,
const std::string& passphrase,
const byte salt[], size_t salt_len,
std::chrono::milliseconds msec,
size_t& iterations) const
{
iterations = pbkdf(out, out_len, passphrase, salt, salt_len, 0, msec);
}
void PBKDF::pbkdf_iterations(byte out[], size_t out_len,
const std::string& passphrase,
const byte salt[], size_t salt_len,
size_t iterations) const
{
if(iterations == 0)
throw Invalid_Argument(name() + ": Invalid iteration count");
const size_t iterations_run = pbkdf(out, out_len, passphrase,
salt, salt_len, iterations,
std::chrono::milliseconds(0));
BOTAN_ASSERT_EQUAL(iterations, iterations_run, "Expected PBKDF iterations");
}
secure_vector<byte> PBKDF::pbkdf_iterations(size_t out_len,
const std::string& passphrase,
const byte salt[], size_t salt_len,
size_t iterations) const
{
secure_vector<byte> out(out_len);
pbkdf_iterations(out.data(), out_len, passphrase, salt, salt_len, iterations);
return out;
}
secure_vector<byte> PBKDF::pbkdf_timed(size_t out_len,
const std::string& passphrase,
const byte salt[], size_t salt_len,
std::chrono::milliseconds msec,
size_t& iterations) const
{
secure_vector<byte> out(out_len);
pbkdf_timed(out.data(), out_len, passphrase, salt, salt_len, msec, iterations);
return out;
}
}
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