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https://github.com/moparisthebest/mailiverse
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62 lines
1.2 KiB
C++
62 lines
1.2 KiB
C++
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/*
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* (C) 2009 Jack Lloyd
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*
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* Distributed under the terms of the Botan license
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*/
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#include <botan/botan.h>
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#include <botan/ecdsa.h>
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#include <botan/pubkey.h>
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#include <memory>
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#include <iostream>
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using namespace Botan;
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int main()
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{
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Botan::LibraryInitializer init;
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try
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{
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AutoSeeded_RNG rng;
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EC_Domain_Params params("secp160r1");
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ECDSA_PrivateKey ecdsa(rng, params);
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ECDSA_PublicKey ecdsa_pub = ecdsa;
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/*
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std::cout << params.get_curve().get_p() << "\n";
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std::cout << params.get_order() << "\n";
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std::cout << X509::PEM_encode(ecdsa);
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std::cout << PKCS8::PEM_encode(ecdsa);
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*/
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PK_Signer signer(ecdsa, "EMSA1(SHA-256)");
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const char* message = "Hello World";
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signer.update((const byte*)message, strlen(message));
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SecureVector<byte> sig = signer.signature(rng);
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std::cout << sig.size() << "\n";
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PK_Verifier verifier(ecdsa_pub, "EMSA1(SHA-256)");
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verifier.update((const byte*)message, strlen(message));
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bool ok = verifier.check_signature(sig);
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if(ok)
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std::cout << "Signature valid\n";
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else
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std::cout << "Bad signature\n";
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}
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catch(std::exception& e)
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{
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std::cout << e.what() << "\n";
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}
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}
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