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#include <qpdf/Pl_RC4.hh>
#include <qpdf/Pl_StdioFile.hh>
#include <stdio.h>
#include <string.h>
#include <iostream>
#include <stdlib.h>
#ifdef _WIN32
# include <io.h>
#else
# include <unistd.h>
#endif
int main(int argc, char* argv[])
{
if (argc != 4)
{
std::cerr << "Usage: rc4 hex-key infile outfile" << std::endl;
exit(2);
}
char* hexkey = argv[1];
char* infilename = argv[2];
char* outfilename = argv[3];
int hexkeylen = strlen(hexkey);
int keylen = hexkeylen / 2;
unsigned char* key = new unsigned char[keylen + 1];
key[keylen] = '\0';
FILE* infile = fopen(infilename, "rb");
if (infile == 0)
{
std::cerr << "can't open " << infilename << std::endl;
exit(2);
}
for (unsigned int i = 0; i < strlen(hexkey); i += 2)
{
char t[3];
t[0] = hexkey[i];
t[1] = hexkey[i + 1];
t[2] = '\0';
long val = strtol(t, 0, 16);
key[i/2] = (unsigned char) val;
}
FILE* outfile = fopen(outfilename, "wb");
if (outfile == 0)
{
std::cerr << "can't open " << outfilename << std::endl;
exit(2);
}
Pl_StdioFile* out = new Pl_StdioFile("stdout", outfile);
// Use a small buffer size (64) for testing
Pl_RC4* rc4 = new Pl_RC4("rc4", out, key, keylen, 64);
delete [] key;
// 64 < buffer size < 512, buffer_size is not a power of 2 for testing
unsigned char buf[100];
bool done = false;
while (! done)
{
int len = fread(buf, 1, sizeof(buf), infile);
if (len <= 0)
{
done = true;
}
else
{
rc4->write(buf, len);
}
}
rc4->finish();
delete rc4;
delete out;
fclose(infile);
fclose(outfile);
return 0;
}
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