pss_params.h

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/*
* (C) 2017 Daniel Neus
*     2023 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
 
#ifndef BOTAN_PSS_PARAMS_H_
#define BOTAN_PSS_PARAMS_H_
 
#include <botan/asn1_obj.h>
#include <string>
 
namespace Botan {
 
class PSS_Params final : public ASN1_Object {
   public:
      static PSS_Params from_emsa_name(std::string_view emsa_name);
 
      PSS_Params(std::string_view hash_fn, size_t salt_len);
 
      PSS_Params(const uint8_t der[], size_t der_len);
 
      template <typename Alloc>
      PSS_Params(const std::vector<uint8_t, Alloc>& vec) : PSS_Params(vec.data(), vec.size()) {}
 
      const AlgorithmIdentifier& hash_algid() const { return m_hash; }
 
      const AlgorithmIdentifier& mgf_algid() const { return m_mgf; }
 
      const AlgorithmIdentifier& mgf_hash_algid() const { return m_mgf_hash; }
 
      size_t salt_length() const { return m_salt_len; }
 
      size_t trailer_field() const { return m_trailer_field; }
 
      std::string hash_function() const { return hash_algid().oid().to_formatted_string(); }
 
      std::string mgf_function() const { return mgf_algid().oid().to_formatted_string(); }
 
      std::vector<uint8_t> serialize() const;
 
      void encode_into(DER_Encoder& to) const override;
 
      void decode_from(BER_Decoder& from) override;
 
   private:
      AlgorithmIdentifier m_hash;
      AlgorithmIdentifier m_mgf;
      AlgorithmIdentifier m_mgf_hash;
      size_t m_salt_len;
      size_t m_trailer_field;
};
 
}  // namespace Botan
 
#endif