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/*
* KDF1
* (C) 1999-2007 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include <botan/kdf1.h>
namespace Botan {
size_t KDF1::kdf(uint8_t key[], size_t key_len,
const uint8_t secret[], size_t secret_len,
const uint8_t salt[], size_t salt_len,
const uint8_t label[], size_t label_len) const
{
m_hash->update(secret, secret_len);
m_hash->update(label, label_len);
m_hash->update(salt, salt_len);
if(key_len < m_hash->output_length())
{
secure_vector<uint8_t> v = m_hash->final();
copy_mem(key, v.data(), key_len);
return key_len;
}
m_hash->final(key);
// FIXME: returns truncated output
return m_hash->output_length();
}
}
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