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Diffstat (limited to 'botan/doc/examples/rsa_kgen.cpp')
-rw-r--r-- | botan/doc/examples/rsa_kgen.cpp | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/botan/doc/examples/rsa_kgen.cpp b/botan/doc/examples/rsa_kgen.cpp new file mode 100644 index 0000000..b7e90ef --- /dev/null +++ b/botan/doc/examples/rsa_kgen.cpp @@ -0,0 +1,65 @@ +/* +Generate an RSA key of a specified bitlength, and put it into a pair of key +files. One is the public key in X.509 format (PEM encoded), the private key is +in PKCS #8 format (also PEM encoded). + +Written by Jack Lloyd (lloyd@randombit.net), June 2-3, 2002 + Updated to use X.509 and PKCS #8 on October 21, 2002 + +This file is in the public domain +*/ + +#include <iostream> +#include <fstream> +#include <string> +#include <cstdlib> +#include <memory> + +#include <botan/botan.h> +#include <botan/rsa.h> +using namespace Botan; + +int main(int argc, char* argv[]) + { + if(argc != 2 && argc != 3) + { + std::cout << "Usage: " << argv[0] << " bitsize [passphrase]" + << std::endl; + return 1; + } + + u32bit bits = std::atoi(argv[1]); + if(bits < 1024 || bits > 4096) + { + std::cout << "Invalid argument for bitsize" << std::endl; + return 1; + } + + Botan::LibraryInitializer init; + + std::ofstream pub("rsapub.pem"); + std::ofstream priv("rsapriv.pem"); + if(!priv || !pub) + { + std::cout << "Couldn't write output files" << std::endl; + return 1; + } + + try + { + AutoSeeded_RNG rng; + + RSA_PrivateKey key(rng, bits); + pub << X509::PEM_encode(key); + + if(argc == 2) + priv << PKCS8::PEM_encode(key); + else + priv << PKCS8::PEM_encode(key, rng, argv[2]); + } + catch(std::exception& e) + { + std::cout << "Exception caught: " << e.what() << std::endl; + } + return 0; + } |