64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
// ignore warnings in this file
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#include "libtorrent/aux_/disable_warnings_push.hpp"
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#include <boost/system/error_code.hpp>
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#include <boost/system/system_error.hpp>
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#include "libtorrent/config.hpp"
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#include "libtorrent/ed25519.hpp"
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#ifndef ED25519_NO_SEED
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#if TORRENT_USE_CRYPTOGRAPHIC_BUFFER
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#include <robuffer.h>
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#include <wrl/client.h>
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using namespace Windows::Security::Cryptography;
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using namespace Windows::Storage::Streams;
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using namespace Microsoft::WRL;
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#elif defined _WIN32
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#include <windows.h>
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#include <wincrypt.h>
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#else
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#include <stdio.h>
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#endif
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void ed25519_create_seed(unsigned char *seed) {
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#if TORRENT_USE_CRYPTOGRAPHIC_BUFFER
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IBuffer^ seedBuffer = CryptographicBuffer::GenerateRandom(32);
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ComPtr<IBufferByteAccess> bufferByteAccess;
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reinterpret_cast<IInspectable*>(seedBuffer)->QueryInterface(IID_PPV_ARGS(&bufferByteAccess));
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bufferByteAccess->Buffer(&seed);
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#elif defined _WIN32
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HCRYPTPROV prov;
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if (!CryptAcquireContext(&prov, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT)) {
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throw boost::system::system_error(boost::system::error_code(GetLastError()
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, boost::system::system_category()));
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}
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if (!CryptGenRandom(prov, 32, seed)) {
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CryptReleaseContext(prov, 0);
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throw boost::system::system_error(boost::system::error_code(GetLastError()
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, boost::system::system_category()));
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}
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CryptReleaseContext(prov, 0);
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#else
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FILE *f = fopen("/dev/urandom", "rb");
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if (f == NULL) {
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throw boost::system::system_error(boost::system::error_code(errno, boost::system::system_category()));
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}
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int read = fread(seed, 1, 32, f);
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if (read != 32) {
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fclose(f);
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throw boost::system::system_error(boost::system::error_code(errno, boost::system::system_category()));
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}
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fclose(f);
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#endif
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}
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#endif
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