jose_algorithm.h

#ifndef SOURCEMETA_CORE_JOSE_ALGORITHM_H_
#define SOURCEMETA_CORE_JOSE_ALGORITHM_H_
 
#ifndef SOURCEMETA_CORE_JOSE_EXPORT
#include <sourcemeta/core/jose_export.h>
#endif
 
#include <cstddef>     // std::size_t
#include <cstdint>     // std::uint8_t, std::uint16_t
#include <optional>    // std::optional
#include <string_view> // std::string_view
 
namespace sourcemeta::core {

enum class JWSAlgorithm : std::uint8_t {
  RS256,
  RS384,
  RS512,
  PS256,
  PS384,
  PS512,
  ES256,
  ES384,
  ES512,
  EdDSA,
  HS256,
  HS384,
  HS512
};

SOURCEMETA_CORE_JOSE_EXPORT
auto to_jws_algorithm(const std::string_view value) noexcept
    -> std::optional<JWSAlgorithm>;

SOURCEMETA_CORE_JOSE_EXPORT
auto jws_algorithm_name(const JWSAlgorithm algorithm) noexcept
    -> std::string_view;

SOURCEMETA_CORE_JOSE_EXPORT
auto jws_algorithm_is_asymmetric(const JWSAlgorithm algorithm) noexcept -> bool;

SOURCEMETA_CORE_JOSE_EXPORT
auto jws_algorithm_digest_bits(const JWSAlgorithm algorithm) noexcept
    -> std::uint16_t;

enum class JWEAlgorithm : std::uint8_t {
  RSA_OAEP,
  RSA_OAEP_256,
  ECDH_ES,
  ECDH_ES_A128KW,
  ECDH_ES_A192KW,
  ECDH_ES_A256KW,
  A128KW,
  A192KW,
  A256KW,
  DIR
};

enum class JWEEncryption : std::uint8_t {
  A128GCM,
  A192GCM,
  A256GCM,
  A128CBC_HS256,
  A192CBC_HS384,
  A256CBC_HS512
};

SOURCEMETA_CORE_JOSE_EXPORT
auto to_jwe_algorithm(const std::string_view value) noexcept
    -> std::optional<JWEAlgorithm>;

SOURCEMETA_CORE_JOSE_EXPORT
auto jwe_algorithm_name(const JWEAlgorithm algorithm) noexcept
    -> std::string_view;

SOURCEMETA_CORE_JOSE_EXPORT
auto to_jwe_encryption(const std::string_view value) noexcept
    -> std::optional<JWEEncryption>;

SOURCEMETA_CORE_JOSE_EXPORT
auto jwe_encryption_name(const JWEEncryption encryption) noexcept
    -> std::string_view;

SOURCEMETA_CORE_JOSE_EXPORT
auto jwe_algorithm_is_asymmetric(const JWEAlgorithm algorithm) noexcept -> bool;

SOURCEMETA_CORE_JOSE_EXPORT
auto jwe_encryption_key_bytes(const JWEEncryption encryption) noexcept
    -> std::size_t;
 
} // namespace sourcemeta::core
 
#endif