diff options
Diffstat (limited to 'botan/doc/examples/ecdsa.cpp')
-rw-r--r-- | botan/doc/examples/ecdsa.cpp | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/botan/doc/examples/ecdsa.cpp b/botan/doc/examples/ecdsa.cpp new file mode 100644 index 0000000..065203a --- /dev/null +++ b/botan/doc/examples/ecdsa.cpp @@ -0,0 +1,57 @@ +#include <botan/botan.h> +#include <botan/ecdsa.h> +#include <botan/pubkey.h> +#include <botan/look_pk.h> + +#include <memory> +#include <iostream> + +using namespace Botan; + +int main() + { + Botan::LibraryInitializer init; + + try + { + AutoSeeded_RNG rng; + + EC_Domain_Params params = get_EC_Dom_Pars_by_oid("1.3.132.0.8"); + + ECDSA_PrivateKey ecdsa(rng, params); + + ECDSA_PublicKey ecdsa_pub = ecdsa; + + /* + std::cout << params.get_curve().get_p() << "\n"; + std::cout << params.get_order() << "\n"; + std::cout << X509::PEM_encode(ecdsa); + std::cout << PKCS8::PEM_encode(ecdsa); + */ + + std::auto_ptr<PK_Signer> signer(get_pk_signer(ecdsa, "EMSA1(SHA-256)")); + + const char* message = "Hello World"; + + signer->update((const byte*)message, strlen(message)); + + SecureVector<byte> sig = signer->signature(rng); + + std::cout << sig.size() << "\n"; + + std::auto_ptr<PK_Verifier> verifier( + get_pk_verifier(ecdsa_pub, "EMSA1(SHA-256)")); + + verifier->update((const byte*)message, strlen(message)); + + bool ok = verifier->check_signature(sig); + if(ok) + std::cout << "Signature valid\n"; + else + std::cout << "Bad signature\n"; + } + catch(std::exception& e) + { + std::cout << e.what() << "\n"; + } + } |