void des::decrypt(char const* key, core::vector<byte> const& in, core::string& out)
{
DES_cblock key_block;
DES_key_schedule schedule;
DES_string_to_key(key, &key_block);
DES_set_key_checked(&key_block, &schedule);
char* buf = (char*)malloc(in.size());
core::vector<byte>::const_iterator iter = in.begin();
DES_cblock* output = (DES_cblock*)buf;
DES_cblock input;
while (iter != in.end())
{
usize sz = in.end() - iter;
if (sz >= 8)
sz = 8;
else
memset(input, 0, sizeof(DES_cblock));
memcpy(input, &*iter, sz);
DES_ecb_encrypt(&input, output, &schedule, DES_DECRYPT);
iter += sz;
output += 1;
}
out = buf;
free(buf);
}
void clear_buffers()
{
if (d_owner->need_release && d_owner->queue)
{
for (core::vector<AudioQueueBufferRef>::iterator each = buffers.begin();
each != buffers.end();
++each)
{
if (*each != NULL)
{
AudioQueueFreeBuffer(d_owner->queue, *each);
*each = NULL;
}
}
}
}
bool output_pack(const core::string & packname, const core::vector<pack_entry> & entries)
{
//Final package output path
string outpack = settings::packs_out + packname + "." + settings::extension;
//Package writer
fwriter writer(outpack, true);
if (!writer.opened() || !writer.ok())
return false;
//Iterate entires
writer.write_uint16((uint16_t)entries.size());
for (auto e : entries)
{
console::print("[Packs] Packaging file (%) '%'", e.type, e.file);
//Write file type
writer.write_uint8((uint8_t)e.type);
//Write file name size
writer.write_uint8((uint8_t)e.file.size());
//Write file name
writer.write(e.file);
string path = e.dir + e.file;
//Write file size
writer.write_uint32((uint32_t)io::size(path));
//Write file contents
if (!io::append_content(path, writer))
return false;
}
writer.close();
return true;
}
void create_buffers()
{
clear_buffers();
usize sz = calc_buffer_size();
OSStatus sta;
for (core::vector<AudioQueueBufferRef>::iterator each = buffers.begin();
each != buffers.end();
++each)
{
if ((sta = AudioQueueAllocateBuffer(d_owner->queue, sz, &*each)))
{
trace_fmt("failed to allocate audio buffer, %.4s", (char*)&sta);
}
}
}
NNT_BEGIN_HEADER_C
# include <openssl/des.h>
# include <math.h>
NNT_END_HEADER_C
NNT_BEGIN_CXX
void des::encrypt(char const* key, core::string const& in, core::vector<byte>& out)
{
DES_cblock key_block;
DES_key_schedule schedule;
DES_string_to_key(key, &key_block);
DES_set_key_checked(&key_block, &schedule);
usize sz = (usize)ceil((double)in.size() / sizeof(DES_cblock)) * sizeof(DES_cblock);
out.resize(sz);
core::string::const_iterator iter = in.begin();
DES_cblock* output = (DES_cblock*)core::pointer(out);
DES_cblock input;
while (iter != in.end())
{
usize sz = in.end() - iter;
if (sz >= 8)
sz = 8;
else
memset(input, 0, sizeof(DES_cblock));
memcpy(input, &*iter, sz);
DES_ecb_encrypt(&input, output, &schedule, DES_ENCRYPT);
iter += sz;
output += 1;
}
}
