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@ -3,6 +3,7 @@
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// Refer to the license.txt file included.
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#include <sstream>
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#include <cryptopp/hex.h>
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#include <cryptopp/integer.h>
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#include <cryptopp/nbtheory.h>
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#include <cryptopp/sha.h>
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@ -37,6 +38,11 @@ std::vector<u8> RsaSlot::GetSignature(const std::vector<u8>& message) {
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CryptoPP::Integer(modulus.data(), modulus.size()));
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std::stringstream ss;
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ss << std::hex << sig;
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CryptoPP::HexDecoder decoder;
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decoder.Put(reinterpret_cast<unsigned char*>(ss.str().data()), ss.str().size());
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decoder.MessageEnd();
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std::vector<u8> result(decoder.MaxRetrievable());
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decoder.Get(result.data(), result.size());
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return HexToBytes(ss.str());
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}
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@ -80,19 +86,27 @@ RsaSlot GetSlot(std::size_t slot_id) {
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}
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std::vector<u8> CreateASN1Message(const std::vector<u8>& data) {
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static constexpr auto asn1_header =
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"0001FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
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"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
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"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
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"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
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"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
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"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
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"FFFFFFFFFFFFFFFFFFFFFFFF003031300D060960864801650304020105000420";
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std::vector<u8> message = HexToBytes(asn1_header);
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static constexpr std::array<u8, 224> asn1_header = {
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{0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x30, 0x31, 0x30, 0x0D, 0x06,
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0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x05, 0x00, 0x04, 0x20}};
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std::vector<u8> message(asn1_header.begin(), asn1_header.end());
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CryptoPP::SHA256 sha;
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std::array<u8, CryptoPP::SHA256::DIGESTSIZE> hash;
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sha.CalculateDigest(hash.data(), data.data(), data.size());
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std::copy(hash.begin(), hash.end(), std::back_inserter(message));
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message.resize(message.size() + CryptoPP::SHA256::DIGESTSIZE);
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sha.CalculateDigest(message.data() + asn1_header.size(), data.data(), data.size());
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return message;
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}
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