// ============================================================================
//
// = LIBRARY
//    ULib - c++ library
//
// = FILENAME
//    des3.h
//
// = AUTHOR
//    Stefano Casazza
//
// ============================================================================

#ifndef ULIB_DES3_H
#define ULIB_DES3_H 1

#include <ulib/base/ssl/des3.h>

#include <ulib/string.h>

struct U_EXPORT UDES3 {

   static UString signData(const char* fmt, ...);
   static UString getSignedData(const char* ptr, uint32_t len);

   static void setPassword(const char* passwd)
      {
      U_TRACE(0, "UDES3::setPassword(%S)", passwd)

      u_des3_key(passwd);
      }

   static void encode(const unsigned char* s, uint32_t n, UString& buffer)
      {
      U_TRACE(0, "UDES3::encode(%.*S,%u,%.*S)", n, s, n, U_STRING_TO_TRACE(buffer))

      U_ASSERT(buffer.capacity() >= n)

      long pos = u_des3_encode(s, n, (unsigned char*)buffer.data());

      buffer.size_adjust(pos);
      }

   static void encode(const UString& s, UString& buffer)
      { encode((const unsigned char*)U_STRING_TO_PARAM(s), buffer); }

   static bool decode(const unsigned char* s, uint32_t n, UString& buffer)
      {
      U_TRACE(0, "UDES3::decode(%.*S,%u,%.*S)", n, s, n, U_STRING_TO_TRACE(buffer))

      U_ASSERT(buffer.capacity() >= n)

      long pos = u_des3_decode(s, n, (unsigned char*)buffer.data());

      buffer.size_adjust(pos);

      bool result = (pos > 0);

      U_RETURN(result);
      }

   static bool decode(const UString& s, UString& buffer)
      { return decode((const unsigned char*)U_STRING_TO_PARAM(s), buffer); }
};

#endif