Hi,
I'm quite new to both C++ and crypto++, and have been trying to work out
this problem.
I've successfully installed crypto++ 5.6.2 to Windows 7 64-bit and Ubuntu
12.04 64-bit.
Under Ubuntu, my SHA256() function occasionally returns nothing. I can
reproduce it usually by entering a few large values and then a couple
small. It works 100% of the time under windows.
g++ version 4.6.3.
Any hints would be appreciated,
Thanks.
1. I compile with:
g++ -m32 -O3 -fpic -g -c main.cpp -lcryptopp
2. g++ -m32 -shared -o test.exe main.o -lc --static -lcryptopp
1. #include "cryptopp/sha.h"
2. #include "cryptopp/base64.h"
3. #include "cryptopp/hex.h"
4. #include <iostream>
5. #include <string>
6.
7. const char * SHA256(const char * argv)
8. {
9. CryptoPP::SHA256 hash;
10. byte digest[ CryptoPP::SHA256::DIGESTSIZE ];
11. std::string input = std::string(argv);
12.
13. hash.CalculateDigest( digest, (const byte *)input.c_str(),
input.length() );
14.
15. CryptoPP::HexEncoder encoder;
16. std::string output;
17. encoder.Attach(new CryptoPP::StringSink( output ));
18. encoder.Put( digest, sizeof(digest) );
19. encoder.MessageEnd();
20. return output.c_str();
21. }
22. int main()
23. {
24. std::string str;
25. while(1)
26. {
27. str.clear();
28. std::getline(std::cin, str);
29. const char * result = SHA256(str.c_str());
30. std::cout << "Hash: " << result << std::endl;
31. }
32. return 0;
33. }
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