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