x509_utils.h

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/*
* (C) 2025 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
 
#ifndef BOTAN_X509_UTILS_H_
#define BOTAN_X509_UTILS_H_
 
#include <botan/asn1_obj.h>
#include <initializer_list>
#include <optional>
 
namespace Botan {
 
inline std::optional<uint32_t> is_sub_element_of(const OID& oid, std::initializer_list<uint32_t> prefix) {
   const auto& c = oid.get_components();
 
   if(c.size() != prefix.size() + 1) {
      return {};
   }
 
   if(!std::equal(c.begin(), c.end() - 1, prefix.begin(), prefix.end())) {
      return {};
   }
 
   return c[c.size() - 1];
}
 
}  // namespace Botan
 
#endif