81 lines
1.7 KiB
C++
81 lines
1.7 KiB
C++
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#include <vanetza/security/hashed_id.hpp>
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#include <boost/functional/hash.hpp>
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#include <algorithm>
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#include <cassert>
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#include <iomanip>
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#include <sstream>
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namespace vanetza
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{
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namespace security
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{
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HashedId3 truncate(const HashedId8& in)
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{
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HashedId3 out;
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assert(out.size() <= in.size());
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std::copy_n(in.rbegin(), out.size(), out.rbegin());
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return out;
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}
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HashedId8 create_hashed_id8(const Sha256Digest& digest)
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{
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HashedId8 hashed;
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std::copy(digest.end() - 8, digest.end(), hashed.data());
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return hashed;
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}
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HashedId8 create_hashed_id8(const Sha384Digest& digest)
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{
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HashedId8 hashed;
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std::copy(digest.end() - 8, digest.end(), hashed.data());
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return hashed;
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}
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std::string to_string(const vanetza::security::HashedId3& digest)
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{
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std::stringstream ss;
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ss << std::hex << std::setfill('0');
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for (uint8_t octet : digest)
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{
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ss << std::setw(2) << static_cast<unsigned>(octet);
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}
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return ss.str();
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}
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std::string to_string(const vanetza::security::HashedId8& digest)
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{
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std::stringstream ss;
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ss << std::hex << std::setfill('0');
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for (uint8_t octet : digest)
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{
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ss << std::setw(2) << static_cast<unsigned>(octet);
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}
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return ss.str();
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}
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} // namespace security
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} // namespace vanetza
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namespace std
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{
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size_t hash<vanetza::security::HashedId3>::operator()(const vanetza::security::HashedId3& hid3) const
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{
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size_t seed = 0;
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for (uint8_t octet : hid3) {
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boost::hash_combine(seed, octet);
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}
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return seed;
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}
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size_t hash<vanetza::security::HashedId8>::operator()(const vanetza::security::HashedId8& hid8) const
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{
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size_t seed = 0;
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for (uint8_t octet : hid8) {
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boost::hash_combine(seed, octet);
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}
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return seed;
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}
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} // namespace std
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